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KR101506913B1 - Mortar composition for reinforcement - Google Patents

Mortar composition for reinforcement Download PDF

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KR101506913B1
KR101506913B1 KR1020140074743A KR20140074743A KR101506913B1 KR 101506913 B1 KR101506913 B1 KR 101506913B1 KR 1020140074743 A KR1020140074743 A KR 1020140074743A KR 20140074743 A KR20140074743 A KR 20140074743A KR 101506913 B1 KR101506913 B1 KR 101506913B1
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김경환
손석제
박성학
차윤호
이장목
석제균
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(주)에이치비티
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/022—Carbon
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/047—Zeolites
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/06—Quartz; Sand
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/02—Agglomerated materials, e.g. artificial aggregates
    • C04B18/027—Lightweight materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/14—Waste materials; Refuse from metallurgical processes
    • C04B18/141—Slags
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/14—Waste materials; Refuse from metallurgical processes
    • C04B18/146—Silica fume
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/0048—Fibrous materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators or shrinkage compensating agents
    • C04B22/008—Cement and like inorganic materials added as expanding or shrinkage compensating ingredients in mortar or concrete compositions, the expansion being the result of a recrystallisation
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators or shrinkage compensating agents
    • C04B22/08—Acids or salts thereof
    • C04B22/14—Acids or salts thereof containing sulfur in the anion, e.g. sulfides
    • C04B22/142—Sulfates
    • C04B22/149—Iron-sulfates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/16—Sulfur-containing compounds
    • C04B24/161—Macromolecular compounds comprising sulfonate or sulfate groups
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/2641—Polyacrylates; Polymethacrylates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
    • C04B2103/302—Water reducers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/60—Agents for protection against chemical, physical or biological attack
    • C04B2103/67—Biocides
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/40—Porous or lightweight materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/72—Repairing or restoring existing buildings or building materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

본 발명은 포틀랜드시멘트 100중량부에 대해 고로슬래그파우더 25 내지 100중량부, 경량골재 25 내지 100중량부, 규사 5 내지 20중량부, 실리카퓸 5 내지 25중량부, 팽창제 5 내지 25중량부, 아크릴수지 5 내지 30중량부, 조기강도증진제 5 내지 20중량부, 감수제 2 내지 7중량부, 섬유보강제 1 내지 3중량부, 무기항균제 2 내지 7중량부, 제올라이트 5 내지 20중량부, 탄소분말 5 내지 20중량부를 포함하는 것을 특징으로 하는 보수보강용 경량 항균 모르타르 조성물에 관한 것이다.The present invention relates to a cement composition comprising 25 to 100 parts by weight of a blast furnace slag powder, 25 to 100 parts by weight of a lightweight aggregate, 5 to 20 parts by weight of silica sand, 5 to 25 parts by weight of silica fume, 5 to 25 parts by weight of an expanding agent, 5 to 30 parts by weight of a resin, 5 to 20 parts by weight of an early strength improving agent, 2 to 7 parts by weight of a water reducing agent, 1 to 3 parts by weight of a fiber reinforcing agent, 2 to 7 parts by weight of an inorganic antibacterial agent, 5 to 20 parts by weight of a zeolite, The present invention relates to a lightweight antimicrobial mortar composition for repair and reinforcement.

Description

보수보강용 경량 항균 모르타르 조성물{MORTAR COMPOSITION FOR REINFORCEMENT}[0001] MORTAR COMPOSITION FOR REINFORCEMENT [0002]

본 발명은 경량화를 통해 리바운드량을 줄여 시공효율을 높이면서도 강도저하를 방지하고 각종 균열에 대한 저항성을 향상시키고 세균 등에 의한 내구성 저하를 방지할 수 있는 보수보강 모르타르 조성물에 관한 것이다.
The present invention relates to a repair and reinforcing mortar composition which can reduce the amount of rebound by reducing the amount of rebound through weight reduction, prevent degradation of strength, improve resistance to various cracks, and prevent durability deterioration caused by bacteria and the like.

시멘트를 사용한 콘크리트는 건설 재료로 가장 널리 사용되고 있으며, 앞으로도 관련 기술의 발전을 통하여 중추적인 건설 재료로 사용될 것이다. 그러나 콘크리트는 압축강도에 비해 인장강도가 낮은 재료이기 때문에 콘크리트 구조물의 균열발생이 불가피하여 잠재적 위험성을 항상 가지고 있다. 따라서, 콘크리트 부식에 의한 유지관리 및 보수에 많은 사회적 비용이 소요됨으로써 구조물의 유지관리 및 보수분야 사업의 비중이 점차 높아지고 있는 현실이다.Concrete using cement is the most widely used construction material, and will continue to be used as a pivotal construction material through the development of related technologies. However, since concrete is a material with low tensile strength compared with compressive strength, cracks in concrete structures are inevitable and always have potential risks. Therefore, it is a reality that the proportion of the maintenance and repair work of the structure is gradually increasing due to the social cost for the maintenance and repair due to the corrosion of the concrete.

이러한 콘크리트 구조물의 보수/보강을 위한 모르타르 조성물로 다양한 기술이 제시되고 있는 바, 일 예로 대한민국 특허등록 제0975371호에서는 초속경시멘트 16~19 중량%, 직선형 강섬유 4~5 중량%, 잔골재 33~39 중량%, 굵은 골재 34~35 중량%, 물 6~7.9중량%, 고성능감수제 및 지연제 0.5~0.6 중량%로 이루어진 것을 특징으로 하는 초속경 강섬유보강콘크리트 조성물 및 이를 이용한 포장보수방법에 대해서 제시한다. Various techniques have been proposed as a mortar composition for repairing / reinforcing concrete structures. For example, Korea Patent Registration No. 0975371 discloses that 16 to 19% by weight of ultra fast cement, 4 to 5% by weight of straight steel fiber, The present invention provides a method for repairing and restoring the ultra low-speed steel fiber reinforced concrete comprising the steps of: (1) .

그러나 상기 기술에 의하면 초속경시멘트를 사용하여 긴급공사가 가능하도록 하나 일반골재를 사용함에 따라 시공시 리바운드가 발생되어 공정 및 재료적 손실을 야기할 수 있는 문제가 있으며, 초속경시멘트의 사용으로 수반될 수밖에 없는 조기응결에 의한 균열의 문제가 있고, 이러한 보수보강 조성물이 하수관거 등의 구조물에 적용되는 경우 하수 등으로부터 세균 등에 노출되어 콘크리트의 부식 등 내구성저하의 문제를 제어할 수 없는 문제가 있다.
However, according to the above-mentioned technique, it is possible to perform urgent construction using cement at the initial speed. However, there is a problem that when using general aggregate, rebound occurs at the time of construction, causing process and material loss. There is a problem of cracking due to early condensation which is inevitable and there is a problem that when such a repair and reinforcement composition is applied to a structure such as a sewer pipe, it is not exposed to bacteria or the like from sewage or the like and the problem of deterioration of durability such as corrosion of concrete can not be controlled.

대한민국 특허등록 제0975371호Korean Patent Registration No. 0975371

따라서 본 발명에서는 상기의 문제점을 해결하고자 시공시 리반운드량을 줄이면서 각종 균열에 대한 저항성을 향상시키고 세균 등에 의한 내구성 저하를 제어할 수 있는 보수보강 모르타르 조성물을 제공하고자 함이다.
Accordingly, the present invention provides a repair and reinforcing mortar composition which can reduce the rebound amount at the time of construction, improve the resistance to various cracks, and control the durability degradation due to bacteria, etc., in order to solve the above problems.

본 발명의 보수보강용 경량 항균 모르타르 조성물은 포틀랜드시멘트 100중량부에 대해 고로슬래그파우더 25 내지 100중량부, 경량골재 25 내지 100중량부, 규사 5 내지 20중량부, 실리카퓸 5 내지 25중량부, 팽창제 5 내지 25중량부, 아크릴수지 5 내지 30중량부, 조기강도증진제 5 내지 20중량부, 감수제 2 내지 7중량부, 섬유보강제 1 내지 3중량부, 무기항균제 2 내지 7중량부, 제올라이트 5 내지 20중량부, 탄소분말 5 내지 20중량부를 포함하는 것을 특징으로 한다.The lightweight antimicrobial mortar composition for repair and reinforcement according to the present invention comprises 25 to 100 parts by weight of a blast furnace slag powder, 25 to 100 parts by weight of a lightweight aggregate, 5 to 20 parts by weight of silica sand, 5 to 25 parts by weight of silica fume, 5 to 25 parts by weight of an expanding agent, 5 to 30 parts by weight of an acrylic resin, 5 to 20 parts by weight of an early strength improving agent, 2 to 7 parts by weight of a water reducing agent, 1 to 3 parts by weight of a fiber reinforcing agent, 2 to 7 parts by weight of an inorganic antibacterial agent, 20 to 20 parts by weight of carbon powder, and 5 to 20 parts by weight of carbon powder.

하나의 예로 본 발명의 모르타르 조성물에는 상기 조성외에도 포틀랜드시멘트 100중량부에 대해 소듐라우릴 설페이트 1 내지 3중량부, 스테아릴 인산칼슘 0.5 내지 1중량부, 카테킨 0.5 내지 1중량부가 더 배합되도록 할 수 있다. As an example, in the mortar composition of the present invention, in addition to the above composition, 1 to 3 parts by weight of sodium lauryl sulfate, 0.5 to 1 part by weight of stearyl phosphate and 0.5 to 1 part by weight of catechin may be added to 100 parts by weight of Portland cement have.

하나의 예로 본 발명의 모르타르 조성물에는 상기 조성외에도 포틀랜드시멘트 100중량부에 대해 크로마이트 5 내지 10중량부와 황산화철 10 내지 20중량부가 더 배합되도록 할 수 있다. As an example, in the mortar composition of the present invention, 5 to 10 parts by weight of chromite and 10 to 20 parts by weight of sulfur iron oxide may be added to 100 parts by weight of Portland cement in addition to the above composition.

하나의 예로 본 발명의 모르타르 조성물에는 포틀랜드시멘트 100중량부에 대해 히드록실프로필메틸셀룰로오즈계 점성분말 0.1 내지 2중량부가 더 배합되도록 할 수 있다.
As one example, in the mortar composition of the present invention, 0.1 to 2 parts by weight of hydroxylpropylmethylcellulose-based viscous powder may be added to 100 parts by weight of Portland cement.

본 발명의 보수보강용 경량 항균 모르타르 조성물은 경량화를 통해 시공시 리바운드량을 줄여 시공성을 향상시킴과 동시에 경량화에 의한 강도저하를 방지할 수 있는 장점이 있다. The lightweight antimicrobial mortar composition for repair and reinforcement of the present invention is advantageous in that it can reduce the amount of rebound during construction through weight reduction to improve workability and reduce the strength by weight reduction.

또한 본 발명의 보수보강용 경량 항균 모르타르 조성물은 시멘트 일부를 슬래그로 대체하여 시멘트 사용량을 줄이면서 슬래그 등의 사용에 따른 균열의 문제를 제어하여 내구성이 우수한 장점이 있다. In addition, the lightweight antimicrobial mortar composition for repair and reinforcement of the present invention is advantageous in durability by controlling the problem of cracking due to use of slag while reducing the amount of cement by replacing part of cement with slag.

또한 본 발명의 보수보강용 경량 항균 모르타르 조성물은 항균조성에 의해 세균에 의한 내구성 저하를 제어할 수 있는 장점이 있다.
In addition, the lightweight antimicrobial mortar composition for repair and reinforcement of the present invention is advantageous in that the durability deterioration due to bacteria can be controlled by the antimicrobial composition.

이하, 본 발명의 구성 및 작용을 좀 더 구체적으로 설명한다. 본 발명을 설명함에 있어서, 본 명세서 및 청구범위에 사용된 용어나 단어는 발명자가 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.
Hereinafter, the structure and function of the present invention will be described in more detail. In describing the present invention, terms and words used in the present specification and claims are to be construed in accordance with the principles of the present invention, on the basis that the inventor can properly define the concept of a term in order to best explain his invention It should be construed as meaning and concept consistent with the technical idea of.

본 발명의 보수보강용 경량 항균 모르타르 조성물은 포틀랜드시멘트 100중량부에 대해 고로슬래그파우더 25 내지 100중량부, 경량골재 25 내지 100중량부, 규사 5 내지 20중량부, 실리카퓸 5 내지 25중량부, 팽창제 5 내지 25중량부, 아크릴수지 5 내지 30중량부, 조기강도증진제 5 내지 20중량부, 감수제 2 내지 7중량부, 섬유보강제 1 내지 3중량부, 무기항균제 2 내지 7중량부, 제올라이트 5 내지 20중량부, 탄소분말 5 내지 20중량부를 포함하는 것을 특징으로 한다.The lightweight antimicrobial mortar composition for repair and reinforcement according to the present invention comprises 25 to 100 parts by weight of a blast furnace slag powder, 25 to 100 parts by weight of a lightweight aggregate, 5 to 20 parts by weight of silica sand, 5 to 25 parts by weight of silica fume, 5 to 25 parts by weight of an expanding agent, 5 to 30 parts by weight of an acrylic resin, 5 to 20 parts by weight of an early strength improving agent, 2 to 7 parts by weight of a water reducing agent, 1 to 3 parts by weight of a fiber reinforcing agent, 2 to 7 parts by weight of an inorganic antibacterial agent, 20 to 20 parts by weight of carbon powder, and 5 to 20 parts by weight of carbon powder.

상기 고로슬래그파우더는 그 분말도 2,500~9,000cm2/g인 것이 바람직 한 바, 이는 고로슬래그파우더의 분말도가 2,500cm2/g 미만인 경우에는 반응성이 작아 강도발현에 불리하고, 분말도가 9,000cm2/g을 초과하는 경우에는 반응성이 커서 초기강도 발현에 유리할 수 있지만, 수화열의 발생을 제어할 수 없고, 시공성이 다소 저하되어 상기와 같이 한정하는 것이 바람직하다.The blast furnace slag powder preferably has a powder content of 2,500 to 9,000 cm 2 / g. When the blast furnace slag powder has a powderity of less than 2,500 cm 2 / g, the reactivity is low, g, the reactivity is high, which is advantageous for the initial strength development. However, the generation of hydration heat can not be controlled, and the workability is somewhat lowered and is preferably limited as described above.

즉 분말도가 높은 고로슬래그파우더를 사용함에 따라 접촉하는 표면적이 커지기 때문에 수화반응이 빨라지고, 조기강도가 높아지는 장점이 있으나, 수화열이 증가됨에 따라 유동성이 저하되는 단점 또한 발생할 수 있게 되는 것이다.That is, the use of the blast furnace slag powder having a high degree of powder has the advantage of increasing the surface area of contact with the slurry powder, thereby increasing the hydration reaction and increasing the early strength. However, the fluidity is lowered as the hydration heat is increased.

또한, 상기 고로슬래그파우더는 물과 접한 직후 슬래그파우더에서 Ca2- 가 용출되고, 표면에 투과성이 나쁜 부정형의 ASH6의 피막이 형성되어 슬래그파우더 입자 속으로 물의 침투 및 슬래그파우더 입자로부터의 이온의 용출이 억제되기 때문에 자체만으로는 수화반응이 잘 진행되지 않는다. In addition, immediately after coming into contact with water, the blast furnace slag powder was eluted with Ca2- from the slag powder, and a coating of amorphous ASH6 with poor permeability on the surface was formed to inhibit the penetration of water into the slag powder particles and the elution of ions from the slag powder particles The hydration reaction does not proceed well on its own.

따라서, 상기 고로슬래그파우더에는 공지의 알카리활성화제를 더 첨가함으로써 상기 고로슬래그파우더의 반응성을 활성화 시키는 것이 더욱 바람직하다. Therefore, it is more preferable to activate the reactivity of the blast furnace slag powder by further adding a known alkali activator to the blast furnace slag powder.

또한 본 발명에서는 경량골재를 첨가함으로써 경량화를 유도하여 시공성을 향상시키도록 한다. 이때 경량골재는 천연경량골재(Natural light weight aggregate)와 인공경량골재(Artificial light weight aggregate)의 혼합물을 사용하는 것이 타당하다. 즉 본 발명에서는 경량골재를 사용함으로써 타설시 리바운드량을 제어하여 시공성을 향상시키면서 재료비적 절감효과를 기대하는 것이다. In addition, in the present invention, lightweight aggregate is added to improve the workability. At this time, it is appropriate to use a mixture of natural light weight aggregate and artificial light weight aggregate as lightweight aggregate. That is, in the present invention, by using the lightweight aggregate, the rebound amount can be controlled during the installation, thereby improving the workability and reducing the material cost.

이에 더하여 본 발명의 모르타르에는 경량골재를 첨가함으로써 경량화를 유도함에 따라 부수될 수 있는 강도저하문제를 실리카퓸을 첨가함으로써 강도를 보강토록 하고 있다.In addition, the lightweight aggregate is added to the mortar of the present invention to increase the strength by adding silica fume to the problem of lowering the strength that can be accomodated by inducing weight reduction.

또한 경량골재는 타 골재에 비해 흡수율이 높아 제품에 적용하면 건조수축이 크게 나타나 표면에 건조수축으로 인한 클랙 또는 박리 현상을 나타내 재시공 및 현장 클래임이 많이 일어날 수 있다. In addition, lightweight aggregate has higher absorption rate than rusty aggregate, and when it is applied to product, drying shrinkage becomes large, and crack or peeling phenomenon due to drying shrinkage on the surface may occur.

이렇게 고로슬래그파우더 등의 첨가에 의한 온도균열, 경량골재 사용에 따른 건조수축균열 등의 문제가 발생할 수 있는 바, 이에 본 발명에서는 상기 팽창제 및 상기 아크릴 수지를 더 첨가하도록 함으로써 수축에 의한 균열문제를 제어토록 하는 것이다. 또한 섬유보강제를 더 첨가하도록 하여 가교작용을 통한 균열문제를 제어토록 하는 것이다. 여기서 팽창제는 다양한 공지재료를 사용할 수 있으므로 그 설명은 생략한다.In this case, problems such as temperature cracks due to addition of blast furnace slag powder and the like and drying shrinkage cracks due to the use of lightweight aggregate may occur. Therefore, in the present invention, by further adding the swelling agent and the acrylic resin, Control. Further, a fiber reinforcing agent is added to control the cracking problem through the crosslinking action. Here, since various known materials can be used as the swelling agent, a description thereof will be omitted.

한편 하수암거 등에 보수보강재로 본 발명의 모르타르가 적용되는 경우 하수로 인해 가스가 많이 배출되어 모르타르를 부식시키는 문제가 있는 바, 본 발명에서는 상기 무기향균제를 조성으로 첨가하였으며, 이에 더하여 탄소분말 및 제올라이트를 첨가하여 수질을 향상시키도록 하여 세균 등에 의한 내구성 저하문제를 해결토록 하는 것이다. On the other hand, when the mortar according to the present invention is applied to a sewage culvert or the like as a maintenance reinforcing material, there is a problem that a large amount of gas is discharged due to sewage and corrodes the mortar. In the present invention, the inorganic antibacterial agent is added as a composition, To improve the quality of water, thereby solving the problem of durability deterioration due to bacteria and the like.

Figure 112014057235102-pat00001
Figure 112014057235102-pat00001

상기 표 1에서 보는 바와 같이 무기향균제가 첨가된 모르타르에 의해 시료를 제조하면 항균성이 KS F 4403(원심력 철근콘크리트 판, 부속서 2 유황산화세균에 대한 무기항균제의 최소 생육 억제농도 (MIC) 측정방법)의 기준치 50ppm이하를 나타내고 있음을 알 수 있다.
As shown in Table 1, when the sample is prepared by the mortar containing the inorganic antibacterial agent, the antibacterial property is determined by the method of measuring the minimum inhibitory concentration (MIC) of inorganic antibacterial agent against KS F 4403 (centrifugal reinforced concrete plate, Annex 2 sulfur oxidizing bacteria) Of 50 ppm or less.

Figure 112014057235102-pat00002
Figure 112014057235102-pat00002

상기 표 2에서 보는 바와 같이 동일 시료를 사용하되 무기항균제가 첨가된 시료의 경우 유황산화세균에 의한 방균효과 시험에 반응성을 나타내는 것을 알 수 있다.
As shown in Table 2, the same samples were used, but the samples added with the inorganic antibacterial agent showed reactivity to the antibacterial effect test with sulfur oxidizing bacteria.

Figure 112014057235102-pat00003
Figure 112014057235102-pat00003

* KS M 1802 (활성탄 시험 방법) 준용
* Applicable for KS M 1802 (Activated Carbon Test Method)

표 3에서 보는 바와 같이 동일 시료를 사용하되 탄소분말이 첨가된 시료의 경우 메틸렌블루 탈색성능에서 탄소분말 첨가량이 증가할수록 더 큰 반응성을 보이는 것을 알 수 있다.
As shown in Table 3, it can be seen that as the addition amount of carbon powder increases, the reactivity of methylene blue decolorizing performance is increased in the case of using the same sample but adding carbon powder.

Figure 112014057235102-pat00004
Figure 112014057235102-pat00004

* 수질오염공정시험기준(환경부고시 제2013-99호)
* Water pollution process test standard (Ministry of Environment notification 2013-99)

상기 표 4에서 보는 바와 같이 동일 시료를 사용하되 탄소분말이 첨가된 시료의 경우 BOD, COD, T-P저감율이 증가하는 것을 알 수 있다. As shown in Table 4, it can be seen that the BOD, COD, and T-P reduction ratios are increased in the case of using the same sample but adding the carbon powder.

한편 본 발명에서 상기와 같이 팽창제 등을 첨가하여 수화열에 의한 온도균열을 제어토록 하고 있으나 온도균열 등을 제어하기 위해 팽창제를 과다 첨가하는 경우 시멘트 페이스트의 물리적결합의 약화로 강도가 저하될 수 있다. 또한 가교작용을 통해 균열을 제어하기 위해 섬유보강재를 과다 첨가하는 경우 섬유간 뭉침, 비균일 분산 등의 문제로 부분적 강도저하 등의 문제가 있다.In the present invention, however, the temperature crack due to hydration heat is controlled by adding an expanding agent or the like as described above. However, when the expansion agent is added to control temperature cracking or the like, the strength may be lowered due to weak physical bonding of the cement paste. Also, when the fiber reinforcement is added in excess to control the cracks through the crosslinking action, there is a problem of partial strength reduction due to problems such as interlaminar clustering and non-uniform dispersion.

이에 본 발명에서는 팽창제 및 섬유보강제를 상기 배합범위로 첨가하면서 이에 더하여 포틀랜드시멘트 100중량부에 대해 크로마이트 5 내지 10중량부가 더 배합되는 예를 제시하고 있다. 상기 크로마이트는 잠열물질로서 수화열 발생시 수화열 일부를 흡수함으로써 전체 수화열을 저하시키도록 하는 것으로 이러한 작용에 의해 수화열에 의한 균열을 제어할 수 있도록 하는 것이다. Accordingly, the present invention provides an example in which the expanding agent and the fiber reinforcing agent are added in the above mixing range, and further, 5 to 10 parts by weight of chromite is further blended with 100 parts by weight of the Portland cement. The chromite is a latent heat material, absorbing a part of hydration heat when hydration heat is generated, thereby lowering the total hydration heat. By this action, cracks due to hydration heat can be controlled.

한편 수화열을 저감시키기 위해 크로마이트를 다량 함유하는 경우 크로마이트 자체가 경도가 취약하여 전체 강도를 저하시킬 수 있어 본 발명에서는 크로마이트에 더하여 황산화철 10 내지 20중량부가 더 배합되도록 하는 예를 제시한다. 황산화철은 시멘트보다 느린 속도로 고로슬래그파우더와 지속적으로 반응을 하게 됨으로써 자기수축 및 건조수축을 제어하게 되는 것이다. 즉 반응지연을 목적으로 첨가되는 황산화철의 첨가에 의해서 모르타르의 수축을 상당히 억제할 수 있다.On the other hand, in the case of containing a large amount of chromite in order to reduce the hydration heat, the chromite itself is weak in hardness and may lower the overall strength. In the present invention, 10 to 20 parts by weight of iron oxide is further added in addition to chromite . Sulfur iron oxide continuously reacts with blast furnace slag powder at a slower rate than cement, thereby controlling autogenous shrinkage and drying shrinkage. That is, the contraction of the mortar can be significantly suppressed by the addition of the sulfur iron oxide added for the purpose of delaying the reaction.

이것은 시멘트 클링커 광물 중 수화 반응성이 가장 큰 C3A가 황산화철과 반응하여 에트링자이트(ettringite) 침상결정을 생성시켜 그 침상결정의 성장압에 의하여, 시멘트 입자 사이 또는 수화물 사이를 밀어내면서 틈을 조밀하게 하기 때문이다. 즉, 다수의 미세한 에트링자이트 침상결정이 발달됨에 따라 팽창압을 얻음으로 수축에 의한 영향을 줄일 수 있으며, 이에 더하여 밀실한 구조에 의해 동결융해 등에 대한 저항성 등 내구성을 향상시킬 수 있게 되는 것이다.This is because C3A, which is the most water-reactive among cement clinker minerals, reacts with sulfur oxides to form ettringite needle crystals. By the pressure of growth of the needle crystals, it pushes between cement particles or between hydrates, . In other words, the effect of shrinkage can be reduced by obtaining a swelling pressure as a result of the development of a large number of fine Ettlingiteitic needle crystals, and furthermore, durability such as resistance to freezing and thawing can be improved by a closed structure .

이에 더하여 본 발명은 일 실시 예로 경량골재를 통한 모르타르의 경량화에 더하여 상기 조성외에도 포틀랜드시멘트 100중량부에 대해 소듐라우릴 설페이트 1 내지 3중량부, 스테아릴 인산칼슘 0.5 내지 1중량부, 카테킨 0.5 내지 1중량부가 더 배합되는 예를 제시한다.In addition, in addition to the above-mentioned composition, in addition to the above-mentioned composition, in addition to the weight reduction of lightweight aggregate through the lightweight aggregate, the present invention may further comprise 1 to 3 parts by weight of sodium lauryl sulfate, 0.5 to 1 part by weight of stearyl phosphate, 1 part by weight is further compounded.

즉 경량골재에 의한 골재경량화에 더하여 시멘트 페이스트에 미세기포를 다량으로 형성토록 함으로써 전체 구조의 경량화를 도모하도록 하는 것이다. 이를 위해 포틀랜드시멘트 100중량부에 대해 소듐 라우릴 설페이트 1 내지 3중량부가 더 배합되도록 한다. 소듐라우릴 설페이트는 시멘트 페이스트에서 미세기포가 형성되도록 하는 것으로 1중량부 미만이면 미세기포 발생효과가 미미하며 3중량부를 초과하는 경우 미세기포의 과다발생으로 오히려 강도가 저하되는 문제가 있어 이와 같이 한정하는 것이다. In other words, in addition to lightweight aggregate by lightweight aggregate, a large amount of fine bubbles are formed in the cement paste, thereby reducing the weight of the entire structure. For this purpose, 1 to 3 parts by weight of sodium lauryl sulfate is added to 100 parts by weight of Portland cement. Sodium lauryl sulfate allows fine bubbles to be formed in cement paste. When the amount is less than 1 part by weight, the effect of generating microbubbles is insignificant. When the amount is more than 3 parts by weight, the microbubbles are excessively generated, .

이렇게 본 발명에서는 골재를 경량골재로 사용토록 함과 동시에 시멘트 페이스트에도 미세기포가 형성되도록 하여 모르타르 전체가 경량화 되도록 하는 것이다. 그런데 소듐라우릴 설페이트가 상기 배합범위에서 첨가가 되더라도 경우에 따라 미세기포간 결합으로 비교적 입경이 큰 기포가 시멘트 페이스트에 내재될 수 있는데 이러한 입경이 큰 기포는 전체 모르타르의 강도저하를 유발할 수 있으며 안정되지 않은 구조에 의해 기포가 터지기 쉬우며 이로 인해 가스가 배출되어 내부 산화 등의 문제를 유발할 수 있다.Thus, in the present invention, the aggregate is used as the lightweight aggregate, and at the same time, fine bubbles are formed in the cement paste, so that the whole mortar is lightened. However, even if sodium lauryl sulfate is added in the above mixing range, bubbles having a relatively large particle diameter may be embedded in the cement paste due to microbubble binding. In such a case, large bubbles may cause degradation of the strength of the whole mortar, The air bubbles are likely to be blown by the unstable structure and the gas may be discharged thereby causing problems such as internal oxidation.

이에 본 발명에서는 소듐라우릴 설페이트에 더하여 스테아릴 인산칼슘 0.5 내지 1중량부가 더 배합되도록 하는 바, 스테아릴 인산칼슘은 시멘트 페이스트에서 입경이 큰 기포를 제거토록 하기 위한 조성으로 상기 배합범위를 초과하여 첨가하면 입경이 큰 기포는 물론 미세기포도 제거하여 경량화를 약화시키게 되므로 상기와 같은 배합범위로 첨가하는 것이 타당하다.In the present invention, 0.5 to 1 part by weight of calcium stearyl phosphate is further added to sodium lauryl sulfate. The stearyl calcium phosphate is a composition for removing bubbles having a large particle size from the cement paste, The addition of such a large amount of bubbles causes a decrease in weight by removing not only fine bubbles but also fine bubbles.

상기 소듐라우릴 설페이트를 첨가하여 미세기포를 발생시키고 불안정한 입경이 큰 기포는 미량의 스테아릴 인산칼슘을 첨가하여 제거하는데, 잔존하는 미세기포의 경우도 시간경과에 따라 시멘트 페이스트 내에서 터지는 경우가 발생되는 바, 상기에서 언급한 바와 같이 시멘트 페이스트 내에서 기포가 터지는 경우 가스방출에 의해 내부에서 산화 등이 발생하여 내구성을 저하시킬 수 있는데 이에 본 발명에서는 카테킨 0.5 내지 1중량부를 더 배합하여 시멘트 페이스트 내부에서 발생할 수 있는 산화를 방지토록 하여 미세기포가 터지는 경우에도 내구성 저하문제가 발생되는 것을 제어할 수 있도록 하는 것이다. The above-mentioned sodium lauryl sulfate is added to generate microbubbles, and unstable bubbles having a large particle size are removed by adding a small amount of calcium stearyl phosphate. In the case of remaining microbubbles, As described above, when bubbles are blown in the cement paste, oxidation may occur inside due to gas emission, thereby decreasing the durability. In the present invention, 0.5 to 1 part by weight of catechin is further blended, So that it is possible to control the generation of the durability degradation problem even when the minute bubbles burst.

또한 하나의 예로 본 발명의 모르타르 조성물에는 포틀랜드시멘트 100중량부에 대해 히드록실프로필메틸셀룰로오즈계 점성분말 0.1 내지 2중량부가 더 배합되도록 할 수 있다. 일반적인 증점제를 사용하는 경우 모르타르를 구성하는 조성들과 실리카흄 등을 교반하는 과정에서 조기에 증점효과가 발생되어 조성간의 충분한 교반이 이루어지지 않아 물성의 균일성이 확보되지 않는 문제가 있으며, 충진성이 저하되어 보수보강이 필요한 구조물에 균일한 충진이 이루어지지 않아 부착강도가 저하될 수 있다.As one example, the mortar composition of the present invention may further comprise 0.1 to 2 parts by weight of hydroxylpropylmethylcellulose-based viscous powder per 100 parts by weight of Portland cement. When a common thickener is used, the thickening effect is generated early in the course of stirring the components constituting the mortar and the silica fume, and there is a problem that sufficient homogeneity of the composition can not be secured due to insufficient agitation of the composition. It is not uniformly filled in a structure requiring repair and reinforcement, so that the bonding strength may be lowered.

이에 본 발명에서는 상기 히드록실프로필메틸셀룰로오즈계 점성분말을 사용하는 바, 상기 히드록실프로필메틸셀룰로오즈계 점성분말은 일반 메틸셀롤로오즈(MC)와 달리 메틸셀롤로오즈(MC)에 수용성 고분자를 도입한 것으로, 조성재료 혼합 시 즉각적인 증점효과가 나타나지 않고, 수용성 고분자가 용해된 이후에 실리카흄 등이 증점효과를 나타내기 때문에 증점효과가 나타나는 시기가 다소 지연된다.In the present invention, the hydroxylpropylmethylcellulose-based viscous powder is used, and the hydroxylpropylmethylcellulose-based viscous powder is prepared by introducing a water-soluble polymer into methylcellulose (MC) unlike ordinary methylcellulose (MC) As a result, there is no immediate thickening effect when mixing the composition materials, and since the silica fume exhibits a thickening effect after the water-soluble polymer is dissolved, the timing of the thickening effect is slightly delayed.

즉 히드록실프로필메틸셀룰로오즈계 점성분말은 실리카흄 및 아크릴수지와 타 조성의 혼합이 균일하게 이루어질 수 있도록 교반시간을 제공하게 되며, 충분히 혼합된 후에 타설시 점성이 발현되어 굴곡이 형성되는 보수보강이 필요한 구조물의 면에 균일하게 충진이 되어 구조물과 보수보강 모르타르가 충분한 부착강도가 발현되도록 하는 것이다.
That is, the hydroxylpropyl methylcellulose-based viscous powder provides a stirring time so that the mixing of the silica fume and the acrylic resin and the other composition can be made uniform, and it is necessary to perform maintenance and reinforcement in which the viscous property is exhibited after the mixing, So that the structure and the repair and strengthening mortar exhibit sufficient bond strength.

Claims (4)

포틀랜드시멘트 100중량부에 대해 고로슬래그파우더 25 내지 100중량부, 경량골재 25 내지 100중량부, 규사 5 내지 20중량부, 실리카퓸 5 내지 25중량부, 팽창제 5 내지 25중량부, 아크릴수지 5 내지 30중량부, 조기강도증진제 5 내지 20중량부, 감수제 2 내지 7중량부, 섬유보강제 1 내지 3중량부, 무기항균제 2 내지 7중량부, 제올라이트 5 내지 20중량부, 탄소분말 5 내지 20중량부, 소듐라우릴 설페이트 1 내지 3중량부, 스테아릴 인산칼슘 0.5 내지 1중량부, 카테킨 0.5 내지 1중량부를 포함하는 것을 특징으로 하는 보수보강용 경량 항균 모르타르 조성물.
25 to 100 parts by weight of blast furnace slag powder, 25 to 100 parts by weight of lightweight aggregate, 5 to 20 parts by weight of silica sand, 5 to 25 parts by weight of silica fume, 5 to 25 parts by weight of swelling agent, 5 to 25 parts by weight of acrylic resin, 1 to 3 parts by weight of a fiber reinforcing agent, 2 to 7 parts by weight of an inorganic antibacterial agent, 5 to 20 parts by weight of a zeolite, 5 to 20 parts by weight of a carbon powder, 1 to 3 parts by weight of sodium lauryl sulfate, 0.5 to 1 part by weight of calcium stearyl phosphate, and 0.5 to 1 part by weight of catechin.
삭제delete 제 1항에 있어서,
포틀랜드시멘트 100중량부에 대해 크로마이트 5 내지 10중량부와 황산화철 10 내지 20중량부가 더 배합되는 것을 특징으로 하는 보수보강용 경량 항균 모르타르 조성물.
The method according to claim 1,
Wherein 5 to 10 parts by weight of chromite and 10 to 20 parts by weight of iron oxide are further blended with 100 parts by weight of Portland cement.
제 1항에 있어서,
포틀랜드시멘트 100중량부에 대해 히드록실프로필메틸셀룰로오즈계 점성분말 0.1 내지 2중량부가 더 배합되는 것을 특징으로 하는 보수보강용 경량 항균 모르타르 조성물.The method according to claim 1,
Wherein 0.1 to 2 parts by weight of hydroxylpropylmethylcellulose-based viscous powder is further blended with 100 parts by weight of Portland cement.
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KR101801872B1 (en) * 2015-04-23 2017-11-27 이준호 Repair Reinforcement Method For Asphalt Using Ultra Rapid Harding Resin-Binder
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