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CN111499301B - Clear water structure decorative concrete and preparation method thereof - Google Patents

Clear water structure decorative concrete and preparation method thereof Download PDF

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CN111499301B
CN111499301B CN202010330292.0A CN202010330292A CN111499301B CN 111499301 B CN111499301 B CN 111499301B CN 202010330292 A CN202010330292 A CN 202010330292A CN 111499301 B CN111499301 B CN 111499301B
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alkali
water
admixture
decorative concrete
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CN111499301A (en
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王军强
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Qingdao Guoshunda New Building Materials Co ltd
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Jiangsu Jianzhu Institute
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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
    • 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
    • C04B14/068—Specific natural sands, e.g. sea -, beach -, dune - or desert 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
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00034—Physico-chemical characteristics of the mixtures
    • C04B2111/00181—Mixtures specially adapted for three-dimensional printing (3DP), stereo-lithography or prototyping
    • 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
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/2023—Resistance against alkali-aggregate reaction
    • 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]

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

Abstract

本发明公开一种清水结构装饰性混凝土，按质量份计，包括以下原料：胶凝材料1份，骨料1.0‑1.5份，纤维0.02‑0.045份，外加剂0.01‑0.0135份，水0.2‑0.3份。本发明的清水结构装饰性混凝土，抗压强度≥120MPa，抗弯强度≥20MPa，干燥收缩值≤300×10‑6，自由收缩值≤650×10‑6，扩展度650‑750mm，成型混凝土色泽一致，呈现青灰色。本发明的清水结构装饰性混凝土，满足结构性能、装饰性能、美学性能和工业化建造性能要求，可以一次成型，消除抹灰、装饰、防护等工序环节，减少作业强度，节约材料，符合绿色建造的特点。

Figure 202010330292

The invention discloses a clear-water structural decorative concrete, which comprises, in parts by mass, the following raw materials: 1 part of cementitious material, 1.0-1.5 parts of aggregates, 0.02-0.045 parts of fibers, 0.01-0.0135 parts of admixtures, and 0.2-0.3 parts of water. share. The clear-water structural decorative concrete of the present invention has compressive strength≥120MPa, flexural strength≥20MPa, drying shrinkage value≤300× 10-6 , free shrinkage value≤650× 10-6 , expansion degree 650-750mm, color and luster of formed concrete Consistent, showing cyan. The clear-water structural decorative concrete of the invention meets the requirements of structural performance, decorative performance, aesthetic performance and industrialized construction performance, can be formed at one time, eliminates plastering, decoration, protection and other process links, reduces work intensity, saves materials, and meets the requirements of green construction. Features.

Figure 202010330292

Description

Clear water structure decorative concrete and preparation method thereof
Technical Field
The invention relates to a clear water structure decorative concrete and a preparation method thereof, belonging to the technical field of concrete.
Background
Ultra high performance concrete (UHPC for short) is used as an ultra high strength cement-based material, and has the advantages of ultra high strength, high toughness, high durability, good volume stability and the like. Compared with the existing commercial concrete, the design, configuration, construction and the like of the ultra-high performance concrete are not mature, and the design, configuration, construction and the like are more limited in a smaller range in the aspects of cement selection, admixture selection, fiber selection and the like. If the strength of cement is not lower than 52.5MPa, the admixture is silica fume, the fiber is steel fiber, etc., the technology is inconvenient to popularize and apply, and the cost is increased.
With the advance of the building industrialization process, new developments of green buildings, ultra-low energy consumption buildings and passive buildings raise higher technical requirements for the development of concrete in the buildings. The decorative concrete of the fair-faced structure is different from the existing common concrete, high-performance concrete and high-strength concrete, and is also different from the common fair-faced concrete, and the functions of structure, decoration, intelligent digital manufacturing and the like need to be met. The clear water structure decorative concrete is suitable for building of building surface landscaping, building curtain wall contour modeling, complex structures, contour modeling structures and the like, the concrete is required to meet the requirements of high strength (strength is not less than 100MPa), high performance (fluidity, expansibility, self-stability, printability and the like), no reinforcing bars, decoration and structure integration, constructability and the like, the configuration and design of the concrete are not selectable by standards, regulations, manuals and the like, and patents, reference documents and the like related to the aspects are not reported.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a clear water structure decorative concrete and a preparation method thereof.
In order to achieve the purpose, the invention adopts the clear water structure decorative concrete which comprises the following raw materials in parts by mass: 1 part of gelled material, 1.0-1.5 parts of aggregate, 0.02-0.045 part of fiber, 0.01-0.0135 part of additive and 0.2-0.3 part of water.
As an improvement, the cementing material consists of 55-65% of cement, 10-16% of active admixture, 15-21% of superfine metakaolin and 6-8% of silicon powder by mass percentage.
As an improvement, the cement adopts 42.5 or 52.5-grade portland cement or ordinary portland cement meeting GB175 regulations.
As an improvement, the aggregate is formed by mixing river sand and quartz sand according to the mass ratio of 1:1, the maximum particle size is 4.8mm, the aggregate is continuously graded, and the compact packing density is not lower than 1670kg/m3And the bone-pulp ratio (the mass ratio of powder to aggregate) is 1.12-1.25. The plasma-to-bone ratio, is an important performance parameter for constructivity, especially 3d print formability.
As an improvement, the fiber is formed by mixing alkali-resistant high-modulus polyethylene fiber and alkali-resistant glass fiber according to the mass ratio of (1-6) to 1, the alkali resistance of the fiber is more than or equal to 95%, the tensile strength is more than or equal to 450MPa, and the elongation at break is 20-30%.
As an improvement, the admixture is formed by mixing a high-efficiency water reducing agent and an alkali-resistant inhibitor according to the mass ratio of (3-4) to 1.
As an improvement, the high-efficiency water reducing agent is a naphthalene high-efficiency water reducing agent; the alkali-resistant inhibitor is composed of an active mineral admixture and high-activity nano-silica, the pH value is 7-9, and the fineness is more than or equal to 120 meshes.
In addition, the invention also provides a preparation method of the clear water structure decorative concrete, which comprises the following steps;
firstly, preparing a cementing material with a formula amount, and uniformly mixing for later use; weighing the admixture with the formula ratio, adding the admixture into water, and uniformly mixing for later use;
secondly, weighing aggregate and alkali-resistant glass fiber according to the formula amount, and uniformly mixing for later use;
thirdly, adding the prepared cementing material, aggregate, alkali-resistant glass fiber mixture and 80 percent of the total mass of the additive aqueous solution into a stirrer, and stirring for 5min to obtain a mixed base material;
fourthly, the alkali-resistant high-modulus polyethylene fibers are uniformly dispersed and added into the mixed base material, the rest additive aqueous solution is added, and the mixture is continuously stirred for 3min to obtain the decorative concrete with the clear water structure.
The principle of the invention is as follows:
in order to realize the new requirements of high strength (compressive strength and bending strength), high performance (fluidity, expansion degree, filling property and the like), clear water property, structure and decoration property, reinforcement-free configuration property and the like of concrete, the compatibility of materials is optimized, and the functions and the purposes of complex modeling, thin wall of a component and the like are met in molding, so that the functional defects in the aspects of alkali return, rust permeation, color change, air holes, cracks, self-cleaning and the like in service period are overcome. The method selects and optimizes the composition, proportion and particle size distribution of the aggregates through the closest packing of the aggregates, selects the gel amount through the slurry-to-bone ratio, selects the fibers according to the reinforcing effect through the reinforcing mechanism of the fibers, and comprises the fiber types, the fiber composition components, the fiber surface characteristics, the fiber length and diameter, the mechanical and physical properties of the fibers, and the ratio of the elastic modulus of the fibers to the elastic modulus of the concrete matrix.
The clear water structure decorative concrete has the compression strength of more than or equal to 120MPa, the bending strength of more than or equal to 20MPa, and the drying shrinkage value of less than or equal to 300 multiplied by 10-6Free shrinkage value of 650 x 10 or less-6And the expansion degree is 650-750mm, the color of the formed concrete is consistent, and the formed concrete is grey.
The clear water structure decorative concrete meets the requirements of structural performance, decorative performance, aesthetic performance and industrialized construction performance, is suitable for manufacturing component parts with curve hollowed-out structures or complex modeling decoration purposes, and is applied to building curtain walls or external facade parts or components. The composite material can be digitally built and molded, can effectively reduce dead weight, reduce creep shrinkage cracks, reduce construction connection and installation difficulty, eliminate links such as structural plastering, decoration, protection and cleaning, reduce operation strength, save materials and accord with the characteristics of green construction.
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FIG. 1 is a schematic illustration of a concrete application of the present invention;
FIG. 2 is a schematic diagram of the performance test of the prepared concrete of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.
The clear water structure decorative concrete comprises the following raw materials in parts by mass: 1 part of gelled material, 1.0-1.5 parts of aggregate, 0.02-0.045 part of fiber, 0.01-0.0135 part of additive and 0.2-0.3 part of water.
As an improvement, the cementing material consists of 55-65% of cement, 10-16% of active admixture, 15-21% of superfine metakaolin and 6-8% of silicon powder by mass percentage.
Wherein, the cement adopts 42.5 or 52.5-grade portland cement or ordinary portland cement meeting the GB175 regulation;
active SiO in active admixture2The content is more than or equal to 80 percent, the activity indexes of 7d and 28d are respectively not less than 80 percent and 90 percent, and the specific surface area is more than or equal to 420m2/kg；
Superfine metakaolin with specific surface area of 20500m2Per kg, the activity index is more than or equal to 121;
silicon powder, 28d activity index 91%, specific surface area 15800m2/kg，SiO2The content is more than 92 percent, and the water demand ratio is 93 percent.
As an improvement, the aggregate is formed by mixing river sand and quartz sand according to the mass ratio of 1:1, the maximum particle size is 4.8mm, the aggregate is continuously graded, and the compact packing density is not lower than 1670kg/m3Bone-to-bone ratio (powder and bone)The mass ratio of the materials) is 1.12-1.25.
As an improvement, the fiber is formed by mixing ultrahigh-strength alkali-resistant high-modulus polyethylene fiber with the length of 6mm and the diameter of 20-23 mu m and alkali-resistant glass fiber with the length of 10mm and the diameter of 0.1mm-0.12mm according to the mass ratio of (1-6) to 1.
As an improvement, the admixture is formed by mixing a high-efficiency water reducing agent and an alkali-resistant inhibitor according to the mass ratio of (3-4) to 1.
As an improvement, the high-efficiency water reducing agent adopts a naphthalene high-efficiency water reducing agent which is a beta-naphthalenesulfonic acid methylene advanced condensation compound, and the water reducing rate is more than or equal to 30 percent; the alkali-resistant inhibitor adopts active mineral admixture and high-activity nano-silica, the PH value is 7-9, and the fineness is more than or equal to 120 meshes.
The water is drinking water or tap water.
In addition, the preparation method of the decorative concrete with the clear water structure comprises the following steps;
firstly, preparing a cementing material with a formula amount, and uniformly mixing for later use; weighing the admixture with the formula ratio, adding the admixture into water, and uniformly mixing for later use;
secondly, weighing aggregate and alkali-resistant glass fiber according to the formula amount, and uniformly mixing for later use;
thirdly, adding the prepared cementing material, aggregate, alkali-resistant glass fiber mixture and 80 percent of the total mass of the additive aqueous solution into a stirrer, and stirring for 5min to obtain a mixed base material;
fourthly, the alkali-resistant high-modulus polyethylene fibers are uniformly dispersed and added into the mixed base material, the rest additive aqueous solution is added, and the mixture is continuously stirred for 3min to obtain the decorative concrete with the clear water structure. The prepared fair-faced structural decorative concrete adopts a 3d printing construction mode or a fabricated industrial production mode to manufacture structural members and parts of the fair-faced structural decorative concrete required by design.
The clear water structure decorative concrete has the compression strength of more than or equal to 120MPa, the bending strength of more than or equal to 20MPa, and the drying shrinkage value of less than or equal to 300 multiplied by 10-6Free shrinkage value of 650 x 10 or less-6And the expansion degree is 650-750mm, the color of the formed concrete is consistent, and the formed concrete is grey.
Example 1
The clear water structure decorative concrete comprises the following raw materials in parts by mass: 1 part of gelled material, 1.23 parts of aggregate, 0.025 part of fiber, 0.0115 part of additive and 0.23 part of water.
As an improvement, the cementing material consists of 0.6 part of cement, 0.15 part of active admixture, 0.18 part of superfine metakaolin and 0.07 part of silicon powder in percentage by weight.
Wherein, the cement adopts 42.5-grade portland cement meeting GB175 regulation;
active admixtures, active SiO2The content is more than or equal to 80 percent, the activity indexes of 7d and 28d are respectively not less than 80 percent and 90 percent, and the specific surface area is more than or equal to 420m2/kg；
Superfine metakaolin with specific surface area of 20500m2Per kg, the activity index is more than or equal to 121;
silicon powder, 28d activity index 91%, specific surface area 15800m2/kg，SiO2The content is 93 percent, and the water demand ratio is 93 percent;
wherein the aggregate is formed by mixing river sand and quartz sand according to the mass ratio of 1:1, the maximum grain diameter is 4.8mm, the aggregate is continuously graded, and the compact packing density is 1677kg/m3The plasma-to-bone ratio was 1.23. The fiber is formed by mixing 0.015 part of ultrahigh-strength alkali-resistant high-modulus polyethylene fiber with the length of 6mm and the diameter of 20-23 mu m and 0.01 part of alkali-resistant glass fiber with the length of 10mm and the diameter of 0.1mm-0.12 mm. The additive is formed by mixing 0.009 parts of high-efficiency water reducing agent and 0.0025 parts of alkali-resistant inhibitor, the high-efficiency water reducing agent adopts naphthalene high-efficiency water reducing agent which is beta-naphthalenesulfonic acid methylene advanced condensation compound, and the water reducing rate is more than or equal to 30 percent; the alkali-resistant inhibitor adopts active mineral admixture and high-activity nano silicon dioxide (3-5%), the PH value is 7-9, and the fineness is more than or equal to 120 meshes. The water is tap water.
The preparation method of the decorative concrete with the clear water structure comprises the following steps;
firstly, preparing a cementing material with a formula amount, and uniformly mixing for later use; weighing the admixture with the formula ratio, adding the admixture into water, and uniformly mixing for later use;
secondly, weighing aggregate and alkali-resistant glass fiber according to the formula amount, and uniformly mixing for later use;
thirdly, adding the prepared cementing material, aggregate, alkali-resistant glass fiber mixture and 80 percent of the total mass of the additive aqueous solution into a stirrer, and stirring for 5min to obtain a mixed base material;
fourthly, the alkali-resistant high-modulus polyethylene fibers are uniformly dispersed and added into the mixed base material, the rest additive aqueous solution is added, and the mixture is continuously stirred for 3min to obtain the decorative concrete with the clear water structure. The prepared fair-faced structural decorative concrete adopts a 3d printing construction mode or a fabricated industrial production mode to manufacture structural members and parts of the fair-faced structural decorative concrete required by design.
The clear water structure decorative concrete has the compression strength of 123.7MPa, the bending strength of 20.7MPa and the dry shrinkage value of 283 multiplied by 10-6Free shrinkage value 616 × 10-6And the spreading degree is 661mm, the color of the formed concrete is consistent, and the formed concrete is grey.
In addition, the clear water structure decorative concrete prepared in example 1 was compared with the general concrete, and the results are shown in table 1 below.
Table 1 comparison of clear water structural decorative concrete prepared in example 1 with ordinary concrete
Performance parameter Plain concrete/NC Clear water structure decorative concrete/HPDC HPDC/NC
Compression resistance 20-50 123.7-131.7 About 6 times
Bending strength 2-5 20.3-24.5 About 10 times
Creep coefficient 1.3-2.3 0.27-0.35 About 19 percent
Free shrinkage value (20-50)×10-4 (4.3-5.2)×10-4 About 5 percent
FIGS. 1-2 are the respective properties of the ornamental concrete of fair-faced structure according to the present invention, and FIG. 1 is a schematic view of the concrete application according to the present invention; FIG. 2 is a schematic diagram of the performance test of the prepared concrete of the present invention.
Example 2
The clear water structure decorative concrete comprises the following raw materials in parts by weight: 1 part of cementing material, 1.12 parts of aggregate, 0.031 part of fiber, 0.0113 part of admixture and 0.25 part of water.
As an improvement, the cementing material consists of 0.55 part of cement, 0.16 part of active admixture, 0.21 part of superfine metakaolin and 0.08 part of silicon powder in percentage by weight.
Wherein, the cement adopts 52.5-grade ordinary portland cement meeting GB175 regulation;
active admixtures, active SiO2The content is more than or equal to 80 percent, the activity indexes of 7d and 28d are respectively not less than 80 percent and 90 percent, and the specific surface area is more than or equal to 420m2/kg；
Superfine metakaolin with specific surface area of 20500m2Per kg, the activity index is more than or equal to 121;
silicon powder, 28d activity index 91%, specific surface area 15800m2/kg，SiO2The content is 93 percent, and the water demand ratio is 93 percent;
wherein the aggregate is formed by mixing river sand and quartz sand according to the mass ratio of 1:1, the maximum grain diameter is 4.8mm, the continuous gradation is realized, and the close packing density is 1681kg/m3The plasma-bone ratio was 1.12. The fiber is formed by mixing 0.02 part of ultra-high strength alkali-resistant high-modulus polyethylene fiber with the length of 6mm and the diameter of 20-23 mu m and 0.011 part of alkali-resistant glass fiber with the length of 10mm and the diameter of 0.1mm-0.12 mm.
The additive is formed by mixing 0.0083 part of high-efficiency water reducing agent and 0.003 part of alkali-resistant inhibitor, the high-efficiency water reducing agent adopts a naphthalene-based high-efficiency water reducing agent which is a beta-naphthalenesulfonic acid methylene advanced condensation compound, and the water reducing rate is more than or equal to 30%; the alkali-resistant inhibitor adopts an alkali inhibitor, an active mineral admixture and high-activity nano silicon dioxide. The water is tap water.
The preparation method of the decorative concrete with the clear water structure comprises the following steps;
firstly, preparing a cementing material with a formula amount, and uniformly mixing for later use; weighing the admixture with the formula ratio, adding the admixture into water, and uniformly mixing for later use;
secondly, weighing aggregate and alkali-resistant glass fiber according to the formula amount, and uniformly mixing for later use;
thirdly, adding the prepared cementing material, aggregate, alkali-resistant glass fiber mixture and 80 percent of the total mass of the additive aqueous solution into a stirrer, and stirring for 5min to obtain a mixed base material;
fourthly, the alkali-resistant high-modulus polyethylene fibers are uniformly dispersed and added into the mixed base material, the rest additive aqueous solution is added, and the mixture is continuously stirred for 3min to obtain the decorative concrete with the clear water structure.
The prepared fair-faced structural decorative concrete adopts a 3d printing construction mode or a fabricated industrial production mode to manufacture structural members and parts of the fair-faced structural decorative concrete required by design.
The clear water structure decorative concrete has the compressive strength of 131.7MPa, the bending strength of 22.4MPa and the dry shrinkage value of 237 multiplied by 10-6Free shrinkage value 581X 10-6And the extension degree is 675mm, and the formed concrete has consistent color and is grey.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (5)

1.一种清水结构装饰性混凝土，其特征在于，按质量份计，包括以下原料：胶凝材料1份，骨料1.0-1.5份，纤维0.02-0.045份，外加剂0.01-0.0135份，水0.2-0.3份；1. A clear-water structural decorative concrete, characterized in that, in parts by mass, comprising the following raw materials: 1 part of cementitious material, 1.0-1.5 part of aggregate, 0.02-0.045 part of fiber, 0.01-0.0135 part of admixture, water 0.2-0.3 servings; 所述胶凝材料由55-65％水泥、10-16％活性掺合料、15-21％超细偏高岭土和6-8％硅粉组成；The cementitious material is composed of 55-65% cement, 10-16% active admixture, 15-21% ultrafine metakaolin and 6-8% silica fume; 所述骨料由河沙和石英砂按照1:1的质量比混合组成，最大粒径4.8mm，连续级配，紧密堆积密度不低于1670kg/m3，浆骨比取1.12-1.25；The aggregate is composed of river sand and quartz sand mixed in a mass ratio of 1:1, with a maximum particle size of 4.8 mm, continuous gradation, a close packing density of not less than 1670 kg/m 3 , and a pulp-to-bone ratio of 1.12-1.25; 所述纤维由耐碱高模量聚乙烯纤维和耐碱玻璃纤维按照(1-6):1的质量比混合组成，纤维耐碱性能≥95％，抗拉强度≥450MPa，断裂伸长率20％-30％。The fiber is composed of alkali-resistant high-modulus polyethylene fiber and alkali-resistant glass fiber mixed in a mass ratio of (1-6):1, the alkali resistance of the fiber is greater than or equal to 95%, the tensile strength is greater than or equal to 450MPa, and the elongation at break is 20 %-30%. 2.根据权利要求1所述的一种清水结构装饰性混凝土，其特征在于，所述水泥采用满足GB175规定的42.5或52.5级硅酸盐水泥或普通硅酸盐水泥。2. A kind of clear-water structure decorative concrete according to claim 1, is characterized in that, described cement adopts 42.5 or 52.5 Portland cement or ordinary Portland cement that meets GB175 regulation. 3.根据权利要求1所述的一种清水结构装饰性混凝土，其特征在于，所述外加剂由高效减水剂和抗碱抑制剂按照(3-4):1的质量比混合组成。3. A kind of clear-water structure decorative concrete according to claim 1, is characterized in that, described admixture is made up of high-efficiency water-reducing agent and alkali-resistant inhibitor mixed according to the mass ratio of (3-4): 1. 4.根据权利要求3所述的一种清水结构装饰性混凝土，其特征在于，所述高效减水剂采用萘系高效减水剂；所述抗碱抑制剂采用活性矿物掺合料和高活性纳米二氧化硅组成，pH值7-9，细度≥120目。4. A kind of clear-water structure decorative concrete according to claim 3, is characterized in that, described superplasticizer adopts naphthalene series superplasticizer; Described anti-alkali inhibitor adopts active mineral admixture and high active Composition of nano-silica, pH 7-9, fineness ≥120 mesh. 5.一种权利要求1-4任一项所述清水结构装饰性混凝土的制备方法，其特征在于，包括以下步骤：5. the preparation method of the described clear water structure decorative concrete of any one of claim 1-4, is characterized in that, comprises the following steps: ①制备配方量的胶凝材料，拌和均匀备用；称取配方量的外加剂加至水中，拌和均匀备用；①Prepare the gelling material of the formula, and mix it evenly for later use; Weigh the admixture of the formula quantity and add it to the water, and mix it evenly for later use; ②称取配方量的骨料和耐碱玻璃纤维拌和均匀备用；②Weigh the aggregate and alkali-resistant glass fiber of the formula and mix them evenly for later use; ③将备用的胶凝材料、骨料和耐碱玻璃纤维混合体，及外加剂水溶液总质量的80％，加入搅拌机内，搅拌5min得混合基料；③ Add the spare cementitious material, aggregate and alkali-resistant glass fiber mixture, and 80% of the total mass of the admixture aqueous solution into the mixer, and stir for 5 minutes to obtain a mixed base; ④将耐碱高模量聚乙烯纤维分散均匀加入混合基料，再加入剩余的外加剂水溶液，继续搅拌3min，得到清水结构装饰性混凝土。④ Disperse the alkali-resistant high-modulus polyethylene fibers uniformly and add them to the mixed base material, then add the remaining admixture aqueous solution, and continue stirring for 3 minutes to obtain clear-water structural decorative concrete.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104386992A (en) * 2014-10-30 2015-03-04 中国铁道科学研究院铁道建筑研究所 Non-autoclave-curing dry-mix active powder concrete and preparation method thereof
CN105198339A (en) * 2015-10-28 2015-12-30 上海罗洋新材料科技有限公司 Ultrahigh-performance cement-based composite material
CN105236882A (en) * 2015-09-07 2016-01-13 南京海纳建材科技有限公司 Decorative concrete for building external envelope structure and preparation method thereof
CN105948660A (en) * 2016-06-14 2016-09-21 同济大学 High-strength ultra-high-toughness concrete and preparation method thereof
EP3106446A1 (en) * 2015-06-18 2016-12-21 Eidgenössische Materialprüfungs- und Forschungsanstalt EMPA Self-prestressed reinforced concrete elements

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104386992A (en) * 2014-10-30 2015-03-04 中国铁道科学研究院铁道建筑研究所 Non-autoclave-curing dry-mix active powder concrete and preparation method thereof
EP3106446A1 (en) * 2015-06-18 2016-12-21 Eidgenössische Materialprüfungs- und Forschungsanstalt EMPA Self-prestressed reinforced concrete elements
CN105236882A (en) * 2015-09-07 2016-01-13 南京海纳建材科技有限公司 Decorative concrete for building external envelope structure and preparation method thereof
CN105198339A (en) * 2015-10-28 2015-12-30 上海罗洋新材料科技有限公司 Ultrahigh-performance cement-based composite material
CN105948660A (en) * 2016-06-14 2016-09-21 同济大学 High-strength ultra-high-toughness concrete and preparation method thereof

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