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KR101181826B1 - Method for manufacturing a concrete goods - Google Patents

Method for manufacturing a concrete goods Download PDF

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Publication number
KR101181826B1
KR101181826B1 KR20120010882A KR20120010882A KR101181826B1 KR 101181826 B1 KR101181826 B1 KR 101181826B1 KR 20120010882 A KR20120010882 A KR 20120010882A KR 20120010882 A KR20120010882 A KR 20120010882A KR 101181826 B1 KR101181826 B1 KR 101181826B1
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sludge
mixture
purified
purified sludge
aggregate
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Korean (ko)
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박희포
박진영
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대진환경(주)
박진영
박희포
주식회사 대진목재
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use 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
    • C04B18/04Waste materials; Refuse
    • C04B18/18Waste materials; Refuse organic
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use 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
    • C04B18/04Waste materials; Refuse
    • C04B18/16Waste materials; Refuse from building or ceramic industry
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/02Selection of the hardening environment
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use 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
    • C04B18/04Waste materials; Refuse
    • C04B18/0418Wet materials, e.g. slurries
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Civil Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Treatment Of Sludge (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Abstract

본 발명은 정수오니의 재사용을 위한 법적 기준을 만족하면서도 상기한 정수오니를 이용한 콘크리트 제품의 제조가 이루어질 수 있도록 하며, 이렇게 제조된 콘크리트 제품의 강도는 충분히 확보될 수 있도록 한 새로운 방식의 정수오니와 순환골재를 이용한 콘크리트 제품의 제조 방법에 관한 것이다.
이를 위해, 본 발명은 정수오니와 순환골재를 서로 혼합하여 1차 혼합물을 생성하는 제1단계; 상기 제1단계를 통해 생성된 1차 혼합물을 일정 시간 동안 보관하여 상기 정수오니의 함수율을 70% 이하로 낮추는 제2단계; 상기 제2단계가 완료된 1차 혼합물에 시멘트와 경화제를 혼합하여 2차 혼합물을 생성하는 제3단계; 그리고, 상기 제3단계를 통해 생성된 2차 혼합물을 거푸집에 제공하여 양생하는 제4단계:를 포함하여 진행됨을 특징으로 하는 정수오니와 순환골재를 이용한 콘크리트 제품의 제조 방법이 제공된다.
The present invention allows the production of concrete products using the above-mentioned purified water sludge while satisfying the legal standard for reuse of purified water sludge, and the new type of purified water sludge so that the strength of the concrete product thus produced can be sufficiently secured. It relates to a method for producing concrete products using recycled aggregate.
To this end, the present invention comprises a first step of producing a primary mixture by mixing the purified sludge with the recycled aggregate; A second step of lowering the water content of the purified sludge to 70% or less by storing the primary mixture generated through the first step for a predetermined time; A third step of producing a second mixture by mixing cement and a hardener in the first mixture in which the second step is completed; And, there is provided a method for producing a concrete product using the purified sludge and the circulating aggregate comprising a fourth step: curing by providing a secondary mixture produced in the third step to formwork.

Description

정수오니와 순환골재를 이용한 콘크리트 제품의 제조 방법{method for manufacturing a concrete goods} Method for manufacturing a concrete product using purified sludge and recycled aggregates

본 발명은 콘크리트 제품의 제조 방법에 관한 것으로써, 더욱 구체적으로는 정수오니와 순환골재의 특성을 이용하여 규격에 맞는 강도를 갖는 콘크리트 제품의 제조 방법에 관한 것이다.The present invention relates to a method for producing a concrete product, and more particularly to a method for producing a concrete product having a strength in accordance with the standard using the characteristics of the purified sludge and the recycled aggregate.

일반적으로 콘크리트 제품은 모래와 골재 및 시멘트를 혼합하여 만든 제품을 의미한다.In general, a concrete product means a product made by mixing sand with aggregate and cement.

특히, 상기 골재는 통상의 자연석이나 자갈 등을 사용하지만 근래에는 상기한 자연석의 사용량을 줄이기 위해 폐건축물의 콘크리트 덩이(순환골재)를 상기한 골재와 혼합하여 콘크리트 제품을 제조함으로써 폐기물에 대한 재활용이 가능하도록 하고 있다.In particular, the aggregate is a natural natural stone or gravel, but in recent years to reduce the amount of use of the natural stone to recycle the waste by mixing concrete aggregates (circulation aggregate) of the waste building with the aggregate to produce a concrete product I'm making it possible.

한편, 최근에는 상기한 콘크리트 제품을 제조하는데 있어서 정수오니를 이용하는 방법에 대한 연구가 진행되고 있다.On the other hand, in recent years, research on a method of using purified water sludge in the production of the above-mentioned concrete products has been conducted.

즉, 상기한 정수오니에는 다량의 모래가 포함되어 있기 때문에 이를 콘크리트 제품의 제조를 위한 모래의 대용으로 제공하고자 한 것이다.That is, since the purified sludge contains a large amount of sand, it is intended to provide it as a substitute for sand for the manufacture of concrete products.

특히, 전술된 정수오니는 근래에 들어 법적 해양투기가 금지됨에 따라 그의 처리에 대한 곤란함을 겪고 있는 실정이며, 현재 발생되고 있는 무기성오니(정수오니)는 대부분 단순매립에 의해 처리되고 있어 한정된 매립지 문제와 매립비용 및 환경파괴로 인한 비용 등의 증가로 인해 재활용 비중을 높여야 하는 문제 때문에 전술된 바와 같은 콘크리트 제품 등과 같이 다양한 재활용을 위한 연구가 진행되고 있는 것이다.In particular, the above-mentioned wastewater sludge has recently suffered difficulties in its disposal due to the prohibition of legal marine dumping, and the inorganic sludge currently generated is mostly processed by simple landfill. Due to the problem of the landfill site and the problem of having to increase the recycling ratio due to the increase in landfill costs and environmental destruction, research for various recycling such as concrete products as described above is being conducted.

하지만, 상기한 정수오니에는 다량의 물기가 함유되어 있기 때문에 종래에는 상기 정수오니의 물기를 제거한 후 이를 시멘트와 골재 및 부족분의 모래와 혼합하여 콘크리트 제품을 제조하여야만 한다는 문제점이 있었다. 즉, 상기 정수오니로부터 상기 물기를 제거하기 위한 많은 시간과 비용이 추가적으로 필요하게 되었던 것이다.However, since the purified sludge contains a large amount of water, there is a problem in that conventionally, the water of the purified sludge must be removed and then mixed with cement and aggregate and insufficient sand to prepare a concrete product. In other words, a lot of time and cost to remove the water from the purified sludge was required.

특히, 상기한 정수오니의 재사용을 위해서는 법적 기준에 따라 70% 이하의 수분 함량을 가질 때에만 가능하다는 것을 고려할 때 이러한 법적 기준에 따른 수분 함량을 맞추기 위해서는 정수오니의 건조를 위한 장소와 설비(히터 등)가 필요하였을 뿐 아니라 상기 설비의 가동에 따른 전기료 등의 소모도 고려한다면 오히려 통상의 모래를 구매하여 사용하는 것이 더욱 효율적이었다.In particular, considering that it is possible to reuse the purified sludge only when the moisture content is less than 70% according to the legal standard, the place and equipment for drying the purified sludge (heater Etc.), it was more efficient to purchase and use ordinary sand, considering the consumption of electricity and the like according to the operation of the facility.

이에 따라, 상기한 정수오니를 이용한 콘크리트 제품의 제조는 단순히 모래의 부족시 부가적인 사용 용도로만 생각하고 있을 뿐 실질적인 적용은 이루어지지 않고 있는 실정이다.Accordingly, the production of concrete products using the purified water sludge is merely considered as an additional use when there is a shortage of sand, but practical application is not made.

본 발명은 전술한 종래 기술에 따른 각종 문제점을 해결하기 위해 안출된 것으로써, 본 발명의 목적은 정수오니의 재사용을 위한 법적 기준을 만족하면서도 상기한 정수오니를 이용한 콘크리트 제품의 제조가 이루어질 수 있도록 하며, 이렇게 제조된 콘크리트 제품의 강도는 충분히 확보될 수 있도록 한 새로운 방식의 정수오니와 순환골재를 이용한 콘크리트 제품의 제조 방법을 제공하는데 있다.The present invention has been made to solve the various problems according to the prior art described above, the object of the present invention is to meet the legal criteria for the reuse of purified water sludge, so that the production of concrete products using the purified water sludge can be made. In addition, the strength of the concrete product thus produced is to provide a method for producing a concrete product using a purified sludge and recycled aggregate of a new method to ensure sufficient strength.

상기한 목적을 달성하기 위한 본 발명의 정수오니와 순환골재를 이용한 콘크리트 제품의 제조 방법에 따르면 정수오니와 순환골재를 서로 혼합하여 1차 혼합물을 생성하는 제1단계; 상기 제1단계를 통해 생성된 1차 혼합물을 일정 시간 동안 자연 건조하여 상기 정수오니의 함수율을 70% 이하로 낮추는 제2단계; 상기 제2단계가 완료된 1차 혼합물에 시멘트와 경화제를 혼합하여 2차 혼합물을 생성하는 제3단계; 그리고, 상기 제3단계를 통해 생성된 2차 혼합물을 거푸집에 제공하여 양생하는 제4단계:를 포함하여 진행됨을 특징으로 한다.According to the method for producing a concrete product using the purified sludge and the circulating aggregate of the present invention for achieving the above object, a first step of mixing the purified sludge and the circulating aggregate to generate a primary mixture; A second step of naturally drying the primary mixture produced through the first step for a predetermined time to lower the water content of the purified sludge to 70% or less; A third step of producing a second mixture by mixing cement and a hardener in the first mixture in which the second step is completed; And, the fourth step of curing by providing a secondary mixture produced in the third step to the die, characterized in that proceeds to include.

여기서, 상기 순환골재는 폐콘크리트를 20㎜ 이하로 파쇄하여 형성함을 특징으로 한다.Here, the circulating aggregate is formed by crushing the waste concrete to 20mm or less.

또한, 상기 2차 혼합물은 상기 1차 혼합물 56.3중량%, 시멘트 43.0중량%, 경화제 0.7중량%로 혼합한 후 물을 섞어 생성함을 특징으로 한다.In addition, the secondary mixture is characterized in that the mixture is produced by mixing 56.3% by weight of the primary mixture, 43.0% by weight cement, 0.7% by weight of a curing agent.

또한, 상기 제2단계의 1차 혼합물에 대한 자연 건조는 인위적인 열원을 제공하지 않고 실온 상태로 지속적인 교반만을 통해 수행됨을 특징으로 한다.In addition, the natural drying of the first mixture of the second step is characterized in that it is performed only by continuous stirring at room temperature without providing an artificial heat source.

이상에서와 같은 본 발명의 정수오니와 순환골재를 이용한 콘크리트 제조 방법은 정수오니의 함수율을 70% 이하로 낮춘 후 사용함에 따라 상기 정수오니의 재사용을 위한 법적 기준을 맞출 수 있게 된 효과를 가진다.The concrete manufacturing method using the purified sludge and the circulating aggregate of the present invention as described above has the effect of meeting the legal criteria for the reuse of the purified sludge as used after lowering the water content of the purified sludge to 70% or less.

특히, 본 발명은 상기한 정수오니의 함수율을 낮추는 방법이 순환골재가 가지는 특성(높은 수분 흡수율)을 이용하기 때문에 정수오니의 건조를 위한 설비 및 전력 소모를 최소화할 수 있게 된 효과를 가진다.In particular, the present invention has the effect of minimizing the equipment and power consumption for drying the purified sludge because the method of lowering the water content of the purified sludge uses the characteristics (high water absorption) of the recycled aggregate.

뿐만 아니라, 정수오니의 함수율을 최대한 낮춘 후 시멘트를 혼합함에 따라 콘크리트 제품의 강도를 충분히 확보할 수 있게 된 효과를 가진다.In addition, by lowering the water content of the purified sludge as much as possible after mixing the cement has the effect that it is possible to sufficiently secure the strength of the concrete product.

도 1은 본 발명의 바람직한 실시예에 따른 정수오니와 순환골재를 이용한 콘크리트 제품의 제조 방법을 설명하기 위해 나타낸 순서도
도 2는 본 발명의 바람직한 실시예에 따른 정수오니와 순환골재를 이용한 콘크리트 제품의 제조 방법 중 1차 혼합물의 제조 과정을 설명하기 위해 나타낸 간략적인 과정도
도 3은 본 발명의 바람직한 실시예에 따른 정수오니와 순환골재를 이용한 콘크리트 제품의 제조 방법 중 2차 혼합물의 제조 과정을 설명하기 위해 나타낸 간략적인 과정도
도 4는 본 발명의 바람직한 실시예에 따른 정수오니와 순환골재를 이용한 콘크리트 제품의 제조 방법 중 2차 혼합물을 양생하여 콘크리트 제품을 얻는 과정을 설명하기 위해 나타낸 간략적인 과정도
1 is a flow chart illustrating a method for producing a concrete product using purified sludge and recycled aggregate according to a preferred embodiment of the present invention
Figure 2 is a simplified process diagram showing to explain the manufacturing process of the primary mixture of the production method of concrete products using purified sludge and recycled aggregate according to a preferred embodiment of the present invention
Figure 3 is a simplified process diagram showing to explain the manufacturing process of the secondary mixture of the method for producing a concrete product using purified sludge and recycled aggregate according to a preferred embodiment of the present invention
Figure 4 is a simplified process diagram showing a process for obtaining a concrete product by curing the secondary mixture of the method for producing a concrete product using purified sludge and recycled aggregate according to a preferred embodiment of the present invention

이하, 본 발명의 정수오니와 순환골재를 이용한 콘크리트 제품의 제조 방법에 대한 바람직한 실시예를 첨부된 도 1 내지 도 4를 참조하여 설명하도록 한다.Hereinafter, a preferred embodiment of the method for producing a concrete product using the purified sludge and the circulating aggregate of the present invention will be described with reference to FIGS. 1 to 4.

우선, 본 발명의 실시예에 따른 콘크리트 제품(400)은 정수오니(110)와 순환골재(120) 및 시멘트(130)로 제조됨을 그 특징으로 한다.First, the concrete product 400 according to the embodiment of the present invention is characterized in that it is made of purified sludge 110, the circulating aggregate 120 and the cement 130.

여기서, 상기 정수오니(110)는 정수장에서 발생된 처리 대상의 슬러지로써 다량의 모래를 포함하고 있기 때문에 콘크리트 제품(400)의 제조 과정에서 모래 대용으로 사용된다.Here, the purified water sludge 110 is used as a substitute for sand in the manufacturing process of the concrete product 400 because it contains a large amount of sand as the sludge of the treatment target generated in the water purification plant.

물론, 전술한 바와 같은 정수오니(110)와 순환골재(120) 및 시멘트(130)는 일괄적인 혼합 과정을 통해 콘크리트 제품(400)으로 제조할 경우 상기 정수오니(110)의 함수율이 높음에 따라 제조된 콘크리트 제품(400)은 취성이 클 수밖에 없게 되어 실질적인 콘크리트 제품(400)의 강도에 대한 규격을 만족하지 못한다.Of course, when the purified sludge 110, the circulating aggregate 120 and the cement 130 as described above are manufactured into the concrete product 400 through a batch mixing process, the water content of the purified sludge 110 is high. The manufactured concrete product 400 is bound to have a large brittleness does not satisfy the specification for the strength of the concrete concrete product 400.

따라서, 본 발명의 실시예에서는 전술된 정수오니(110)와 순환골재(120) 및 시멘트(130)를 이용하면서도 이를 이용하여 제조된 콘크리트 제품(400)의 강도에 대한 규격은 만족할 수 있도록 한 제조 방법을 제시하며, 이를 각 과정별로 첨부된 도 1의 순서도 및 도 2 내지 도 4의 과정도를 참조하여 더욱 상세히 설명하면 다음과 같다.Therefore, in the embodiment of the present invention, while using the purified sludge 110, the circulating aggregate 120 and the cement 130, the specification for the strength of the concrete product 400 manufactured by using the same to satisfy the production A method is described, which will be described in more detail with reference to the flowchart of FIG. 1 and the process diagrams of FIGS. 2 to 4 attached to each process as follows.

먼저, 정수오니(110)와 순환골재(120)를 각각 준비하고, 이렇게 준비된 정수오니(110)와 순환골재(120)를 첨부된 도 1과 같이 서로 혼합하여 1차 혼합물(100)을 생성(S110)한다.First, the purified sludge 110 and the circulating aggregate 120 are prepared, and the purified sludge 110 and the circulating aggregate 120 are thus mixed with each other as shown in FIG. 1 to produce a primary mixture 100 ( S110).

여기서, 상기 정수오니(110)는 탁질(濁質)과 수산화알루미늄이 주 성분임을 고려할 때 98% 이상의 함수율을 가지지만, 이의 경우 정수오니(110)의 운반시 다량의 물이 도로에 낙하되기 때문에 통상적으로는 80~85% 정도의 함수율을 갖도록 탈수한 후 재처리 업체로 제공되며, 본 발명의 실시예에서도 상기한 정수오니가 80~85% 정도의 함수율을 갖도록 탈수된 상태임을 그 예로 한다.Here, the purified sludge 110 has a water content of 98% or more considering that the turbidity and aluminum hydroxide are the main components, but in this case, since a large amount of water falls on the road when the purified sludge 110 is transported. Typically, it is provided to the reprocessing company after dehydration to have a water content of about 80 to 85%, in the embodiment of the present invention, the purified sludge is dehydrated to have a water content of about 80 to 85%.

또한, 상기 순환골재(120)는 콘크리트용 순환골재(KS F 2573)로써 폐콘크리트로부터 생산된 재생 골재이다.In addition, the recycled aggregate 120 is recycled aggregate produced from waste concrete as recycled aggregate (KS F 2573) for concrete.

이때, 본 발명의 실시예에서는 상기한 순환골재(120)가 상기 폐콘크리트로부터 생산된 재생 골재 중 20㎜ 이하의 크기를 갖는 잔 골재임을 제시한다.At this time, the embodiment of the present invention suggests that the circulating aggregate 120 is a fine aggregate having a size of 20 mm or less in the recycled aggregate produced from the waste concrete.

즉, 폐콘크리트를 20㎜ 이하의 크기로 파쇄하여 본 발명의 실시예에서 제공되는 순환골재(120)를 얻는 것이다. 이는, 순환골재(120)의 크기를 충분히 작게 함으로써 수분의 흡수가 더욱 잘 될 수 있도록 함과 더불어 상대적으로 작은 순환골재(120)의 사용을 통해 정수오니(110)와의 혼합 및 추후 시멘트(130)와의 혼합이 균일하게 이루어질 수 있도록 하여 콘크리트 제품(400)의 강도 저하가 방지될 수 있도록 한 것이다.That is, the waste concrete is crushed to a size of 20 mm or less to obtain the circulating aggregate 120 provided in the embodiment of the present invention. This allows the absorption of moisture to be better by reducing the size of the circulating aggregate 120 sufficiently, as well as mixing with the purified sludge 110 and subsequent cement 130 through the use of a relatively small circulating aggregate 120. It is to be able to be uniformly mixed with and to prevent the degradation of the strength of the concrete product (400).

그리고, 상기한 순환골재(120)와 정수오니(110)는 그의 부피를 기준으로 볼 때 1대 1의 비율로 혼합함으로써, 정수오니(110)의 과도한 제공에 의한 함수율 저감 효과를 충분히 얻지 못하는 문제점 혹은, 순환골재(120)의 과도한 제공에 의한 콘크리트 제품(400)의 강도 저하 우려에 따른 문제점의 야기가 방지될 수 있도록 함이 바람직하다.In addition, the circulating aggregate 120 and the purified sludge 110 are mixed at a ratio of 1 to 1 based on their volume, so that the water content reduction effect due to excessive provision of purified sludge 110 is not sufficiently obtained. Or, it is preferable to cause the problem caused by the concern that the strength degradation of the concrete product 400 due to excessive provision of the circulation aggregate 120 can be prevented.

더욱이, 상기 1차 혼합물(100)의 생성 과정은 상기 정수오니(110)와 상기 순환골재(120)가 고르게 혼합될 수 있도록 교반기(도시는 생략됨)에서 진행됨이 더욱 바람직하지만, 필요에 따라 작업자가 수작업으로 상기 정수오니(110)와 상기 순환골재(120)를 서로 혼합함으로써 진행되도록 할 수도 있다.Further, the process of producing the primary mixture 100 is more preferably carried out in an agitator (not shown) so that the purified sludge 110 and the recycled aggregate 120 can be evenly mixed, but if necessary, the worker It may be to proceed by mixing the purified water sludge 110 and the circulation aggregate 120 by hand.

다음으로, 상기한 1차 혼합물(100)의 생성이 완료되면 이 1차 혼합물(100)을 일정 시간 동안 자연 건조(S120)하여 상기 정수오니(110)의 함수율이 70% 이하가 될 수 있도록 한다.Next, when the production of the primary mixture 100 is completed, the primary mixture 100 is naturally dried (S120) for a predetermined time so that the water content of the purified sludge 110 may be 70% or less. .

이때, 상기 1차 혼합물(100)에 대한 자연 건조(S120)는 인위적인 열원을 제공하지 않고 실온 상태로 보관함으로써 수행된다.At this time, the natural drying (S120) for the primary mixture 100 is performed by storing at room temperature without providing an artificial heat source.

경과시간Elapsed time 1시간1 hours 50시간50 hours 100시간100 hours 정수오니Water purification 84.86%84.86% 82.34%82.34% 79.32%79.32% 정수오니+순환골재Water purification sludge + circulating aggregate 82.74%82.74% 75.33%75.33% 66.1666.16

전술된 [표 1]은 정수처리장으로부터 제공받은 정수오니(110)를 실온 상태에서의 자연 건조 시간에 따른 함수율의 변화 및 상기 정수오니(110)에 순환골재(120)를 혼합한 1차 혼합물(100)의 자연 건조 시간에 따른 함수율의 변화를 나타내고 있으며, 이때의 시험은 50g의 시료를 함수율 측정기로 측정함으로써 수행되었다.[Table 1] is the first mixture of the purified sludge (110) provided from the purified water treatment plant in accordance with the natural drying time at room temperature state and the recycled aggregate (120) mixed with the purified sludge (110) ( 100) shows the change in water content with the natural drying time, the test was carried out by measuring 50g of the sample with a water content meter.

이를 통해 알 수 있듯이, 순환골재(120)와 혼합한 정수오니(110)는 상기 정수오니(110) 혼자만 제공될 때에 비해 함수율의 저감 시간이 극히 짧음을 알 수 있으며, 법적 기준에 따른 70% 이하의 함수율 조건에 도달될 때까지는 대략 70시간 정도 소요됨을 알 수 있다.As can be seen through this, the purified sludge 110 mixed with the circulating aggregate 120 can be seen that the reduction time of the moisture content is extremely short compared to when only the purified sludge 110 is provided alone, 70% or less according to legal standards. It can be seen that it takes about 70 hours to reach the moisture content condition of.

즉, 상기 1차 혼합물(100)을 이루는 순환골재(120)가 폐콘크리트임에 따라 수분 흡수율이 높다는 것을 고려할 때 상기 순환골재(120)와 상기 정수오니(110)를 단순히 혼합하여 일정 시간 동안 자연 건조만 하더라도 상기 정수오니(110)에 함유된 수분은 상기 순환골재(120)로 흡수되면서 상기 정수오니(110)의 재사용을 위한 법정 기준치인 함수율 70% 이하로 맞출 수가 있게 되며, 이는 된다.That is, considering that the circulating aggregate 120 constituting the primary mixture 100 is waste concrete, the moisture absorption rate is high, so that the circulating aggregate 120 and the purified sludge 110 are naturally mixed for a predetermined time. Even if dried, the water contained in the purified sludge 110 is absorbed into the circulating aggregate 120 and can be adjusted to 70% or less of a moisture content, which is a legal reference value for reuse of the purified sludge 110.

특히, 상기한 순환골재(120)는 상기 정수오니(110)와 섞이게 될 경우 상기 정수오니(110) 내에 다량의 공극이 생성되도록 하게 되고, 이러한 공극의 영향에 의해 외부 공기의 순환이 더욱 원활히 이루어짐에 따라 상기한 정수오니(110)와 순환골재(120) 간의 1차 혼합물(100)은 더욱 빨리 건조될 수 있게 된다.In particular, when the circulation aggregate 120 is mixed with the purified sludge 110, a large amount of voids are generated in the purified sludge 110, and the circulation of external air is made more smooth by the influence of the voids. As described above, the primary mixture 100 between the purified sludge 110 and the circulating aggregate 120 may be dried more quickly.

한편, 상기한 1차 혼합물(100)에 대한 함수율은 콘크리트 제품의 사용 용도에 따라 달리 결정된다. 즉, 상대적으로 고강도의 콘크리트 제품을 얻고자 한다면 보다 오랜 시간 동안 자연 건조하여 함수율을 더욱 낮추면 되는 것이다.On the other hand, the water content for the primary mixture 100 described above is determined differently depending on the use of the concrete product. In other words, if you want to obtain a relatively high-strength concrete product is to naturally dry for a longer time to further lower the moisture content.

물론, 별도의 교반이나 수시적인 뒤섞음 등의 작업을 통해 상기한 1차 혼합물(100)의 함수율 저감이 더욱 빨리 진행되도록 할 수도 있다.Of course, the water content of the primary mixture 100 may be reduced more rapidly through the operation of separate stirring or occasional mixing.

다음으로, 상기한 자연 건조 과정을 통해 1차 혼합물(100)의 정수오니(110)에 대한 함수율이 70% 이하가 되면 첨부된 도 3과 같이 상기 1차 혼합물(100)에 시멘트(130)와 경화제(140)를 혼합하여 2차 혼합물(200)을 생성(S130)한다.Next, when the water content of the purified sludge 110 of the primary mixture 100 is 70% or less through the above-described natural drying process, cement 130 and the primary mixture 100 are attached to the primary mixture 100 as shown in FIG. By mixing the curing agent 140 to produce a secondary mixture 200 (S130).

이때, 상기 1차 혼합물(100)의 정수오니(110)에 대한 함수율이 70% 이하가 되기 전에 상기 시멘트(130)와 경화제(140)를 혼합하게 된다면 상기한 시멘트(130)로 인해 상기 정수오니(110)의 함수율이 충분히 낮아지지 않는다는 문제점이 발생되고, 이로 인해 정수오니(110)의 재사용을 위한 법정 기준을 만족하지 못할 뿐 아니라 상기 정수오니(110)의 과도한 함수율로 인해 최종 완성된 콘크리트 제품(400)은 취성이 높아져서 강도의 저하가 야기될 수밖에 없다는 문제점이 발생된다.In this case, when the cement 130 and the curing agent 140 are mixed before the water content of the primary mixture 100 becomes 70% or less, the purified water sludge may be caused by the cement 130. There is a problem that the moisture content of the 110 is not low enough, which does not satisfy the legal standards for reuse of the purified sludge 110, but also due to the excessive water content of the purified sludge 110, the finished concrete product 400 has a problem that the brittleness is increased to cause a decrease in strength.

따라서, 전술된 본 발명의 실시예와 같이 상기 1차 혼합물(100)의 정수오니(110)에 대한 함수율이 70% 이하(바람직하게는 65% 이하)에 도달된 이후에 상기 시멘트(130)와 경화제(140)를 상기 1차 혼합물(100)에 혼합하여 2차 혼합물(200)을 생성함이 바람직하다.Therefore, the cement 130 and the water content after the water content of the primary sludge (110) 70% or less (preferably 65% or less) as described above in the embodiment of the present invention described above Preferably, the curing agent 140 is mixed with the primary mixture 100 to produce a secondary mixture 200.

또한, 상기한 바와 같은 2차 혼합물(200)은 상기 1차 혼합물(100) 56.3중량%, 시멘트(130) 43.0중량%, 경화제(140) 0.7중량%로 혼합한 후 물을 섞어 생성한다.In addition, the secondary mixture 200 as described above is produced by mixing 56.3 wt% of the primary mixture 100, 43.0 wt% of the cement 130, and 0.7 wt% of the curing agent 140, followed by mixing with water.

이때, 상기 경화제(140)는 상기 시멘트(130)가 물과 어울려 굳어지는 시간을 조절하면서 초기 강도를 향상시키기 위한 물질로써, 염화칼슘, 염화나트륨, 수산화나트륨 등의 혼합물이 될 수 있다.In this case, the curing agent 140 is a material for improving the initial strength while adjusting the time when the cement 130 is solidified with water, it may be a mixture of calcium chloride, sodium chloride, sodium hydroxide and the like.

물론, 상기한 2차 혼합물(200)을 이루는 각 물질의 중량%는 전술된 실시예로만 한정되지는 않음과 더불어 각 물질 역시 전술된 실시예로만 한정되지는 않는다.Of course, the weight percent of each material constituting the secondary mixture 200 is not limited to the above-described embodiment, and each material is not limited to the above-described embodiment as well.

즉, 상기 1차 혼합물(100)의 양을 줄이는 대신 자갈이나 돌 등과 같은 골재 혹은, 모래를 추가적으로 혼합하여 생성할 수도 있는 것이다.That is, instead of reducing the amount of the primary mixture 100, aggregates such as gravel or stone, or sand may be additionally mixed.

그리고, 상기한 2차 혼합물(200)의 생성이 완료된 이후에는 상기 2차 혼합물(200)을 거푸집(300)에 제공하여 양생(S140)함으로써 원하는 형태의 콘크리트 제품(400)을 얻게 된다. 이는, 첨부된 도 4와 같다.In addition, after the production of the secondary mixture 200 is completed, the secondary mixture 200 is provided to the formwork 300 to cure (S140) to obtain a concrete product 400 of a desired form. This is as shown in Figure 4 attached.

결국, 전술한 바와 같은 본 발명의 실시예에 따른 정수오니(110)와 순환골재(120)를 이용한 콘크리트 제품(400)의 제조 방법은 정수오니(110)의 함수율을 70% 이하로 낮춘 후 사용함에 따라 상기 정수오니(110)의 재사용을 위한 법적 기준을 맞출 수 있게 된다.As a result, the manufacturing method of the concrete product 400 using the purified sludge 110 and the circulating aggregate 120 according to the embodiment of the present invention is used after lowering the water content of the purified sludge 110 to 70% or less. In accordance with the legal criteria for the reuse of the purified sludge (110) can be adjusted.

특히, 본 발명에서는 상기한 정수오니(110)의 함수율을 낮추는 방법이 순환골재(120)가 가지는 특성(높은 수분 흡수율)을 이용하기 때문에 정수오니(110)의 건조를 위한 설비 및 히터 구동에 따른 전력 소모를 최소화할 수 있게 된 장점을 가진다.In particular, in the present invention, since the method of lowering the water content of the purified sludge 110 uses the characteristics (high water absorption) of the circulating aggregate 120, the facility and the heater for drying the purified sludge 110 are driven. It has the advantage of being able to minimize power consumption.

뿐만 아니라, 정수오니(110)의 함수율을 최대한 낮춘 후 시멘트(130)를 혼합함에 따라 콘크리트 제품(400)의 강도를 충분히 확보할 수 있게 된 장점을 가진다.In addition, after lowering the water content of the purified water sludge 110 as much as possible, the cement 130 may be mixed to sufficiently secure the strength of the concrete product 400.

100. 1차 혼합물 110. 정수오니
120. 순환골재 130. 시멘트
140. 경화제 200. 2차 혼합물
300. 거푸집 400. 콘크리트 제품
100. Primary mixture 110. Purified water
120. Recycled aggregates 130. Cement
140. Curing agent 200. Secondary mixture
300. Formwork 400. Concrete products

Claims (4)

순환골재와 함수율 80% 이상의 정수오니를 서로 혼합하여 1차 혼합물을 생성하는 제1단계;
상기 제1단계를 통해 생성된 1차 혼합물을 자연 건조하여 상기 정수오니의 함수율을 70% 이하로 낮추는 제2단계;
상기 제2단계가 완료된 1차 혼합물에 시멘트와 경화제를 혼합하여 2차 혼합물을 생성하는 제3단계; 그리고,
상기 제3단계를 통해 생성된 2차 혼합물을 거푸집에 제공하여 양생하는 제4단계:를 포함하여 진행됨을 특징으로 하는 정수오니와 순환골재를 이용한 콘크리트 제품의 제조 방법.
A first step of mixing the recycled aggregate and the purified sludge with a water content of 80% or more to produce a primary mixture;
A second step of naturally drying the primary mixture produced through the first step to lower the water content of the purified sludge to 70% or less;
A third step of producing a second mixture by mixing cement and a hardener in the first mixture in which the second step is completed; And,
The fourth step of curing by providing a secondary mixture produced in the third step to formwork: Method of producing a concrete product using a purified sludge and circulating aggregate.
제 1 항에 있어서,
상기 순환골재는 폐콘크리트를 20㎜ 이하로 파쇄하여 형성함을 특징으로 하는 정수오니와 순환골재를 이용한 콘크리트 제품의 제조 방법.
The method of claim 1,
The recycled aggregate is a method for producing concrete products using purified sludge and recycled aggregates, characterized in that formed by crushing the waste concrete to 20mm or less.
제 1 항에 있어서,
상기 2차 혼합물은
상기 1차 혼합물 56.3중량%, 시멘트 43.0중량%, 경화제 0.7중량%로 혼합한 후 물을 섞어 생성함을 특징으로 하는 정수오니와 순환골재를 이용한 콘크리트 제품의 제조 방법.
The method of claim 1,
The secondary mixture is
56.3% by weight of the primary mixture, 43.0% by weight of cement, 0.7% by weight of a curing agent after the production of concrete products using purified sludge and circulating aggregate characterized in that the mixture is produced by water.
제 1 항에 있어서,
상기 제2단계의 1차 혼합물에 대한 자연 건조는
인위적인 열원을 제공하지 않고 실온 상태에서 지속적인 교반만을 통해 수행됨을 특징으로 하는 정수오니와 순환골재를 이용한 콘크리트 제품의 제조 방법.
The method of claim 1,
Natural drying of the first mixture of the second step is
A method for producing concrete products using purified sludge and recycled aggregates, which is carried out only by continuous stirring at room temperature without providing an artificial heat source.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109851266A (en) * 2019-01-21 2019-06-07 北京工业大学 A kind of aggregate processing method enhancing construction refuse regenerated concrete chlorine salt resistant erosion performance

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100266878B1 (en) 1998-06-30 2000-11-01 사또아끼히로 A hardening composition for comment molding materials made by wastes and a manufacturing method for cement molding materials using the aforesaid hardening composition
KR100878337B1 (en) * 2007-06-21 2009-01-14 (주)영동수로 Method for producing corrosive aggregate using organic wastes and its method and method for manufacturing hybrid concrete product using corrosive aggregate and hybrid concrete product produced by

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100266878B1 (en) 1998-06-30 2000-11-01 사또아끼히로 A hardening composition for comment molding materials made by wastes and a manufacturing method for cement molding materials using the aforesaid hardening composition
KR100878337B1 (en) * 2007-06-21 2009-01-14 (주)영동수로 Method for producing corrosive aggregate using organic wastes and its method and method for manufacturing hybrid concrete product using corrosive aggregate and hybrid concrete product produced by

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109851266A (en) * 2019-01-21 2019-06-07 北京工业大学 A kind of aggregate processing method enhancing construction refuse regenerated concrete chlorine salt resistant erosion performance

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