CN106673567B - A kind of high performance concrete - Google Patents

A kind of high performance concrete Download PDF

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Publication number
CN106673567B
CN106673567B CN201610878359.8A CN201610878359A CN106673567B CN 106673567 B CN106673567 B CN 106673567B CN 201610878359 A CN201610878359 A CN 201610878359A CN 106673567 B CN106673567 B CN 106673567B
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Prior art keywords
parts
weight
solution
water
reducing agent
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CN201610878359.8A
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CN106673567A (en
Inventor
陈望能
秦国新
笪俊
梅杰
庞宾
张凯
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Jiangsu Jian Yuan Building Materials Research Institute Co Ltd
Jiangsu Haining New Building Material Technology Co Ltd
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Jiangsu Jian Yuan Building Materials Research Institute Co Ltd
Jiangsu Haining New Building Material Technology Co Ltd
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Classifications

    • 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
    • C04B28/02Compositions 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
    • C04B28/08Slag cements
    • C04B28/082Steelmaking slags; Converter slags
    • 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
    • C04B40/0028Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039Premixtures of ingredients
    • 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
    • C04B2103/00Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/30Water reducers, plasticisers, air-entrainers, flow improvers
    • C04B2103/302Water reducers

Abstract

The invention belongs to technical field of concrete, and in particular to a kind of high performance concrete.The high performance concrete is grouped as by the group of following parts by weight: 400~550 parts of cementitious material, 1000~1200 parts of coarse aggregate, 600~750 parts of fine aggregate, 4~6 parts of composite water-reducing agent, 0.02~0.06 part of oil tea triterpenoid saponin, 140~150 parts of water.Concrete provided by the invention has many advantages, such as high workability, high volume stability and high-durability.

Description

A kind of high performance concrete
Technical field
That the present invention relates to technical field of concrete more particularly to a kind of application property is good, volume stability is good, durability is good High performance concrete.
Background technique
Concrete, referred to as " concrete (t ó ng) " refer to the cementing integral engineered composite material of aggregate by cementitious material General designation.The concrete usually said, which refers to, makees cementitious material, sand, masonry aggregate with cement;(additive and blending can be contained with water Material) cooperate by a certain percentage, it is agitated obtained by cement concrete, also referred to as normal concrete, it is widely used in civil engineering.
With the fast development of construction industry, to the workability of concrete used in building course, intensity and durable Performance requirement is continuously improved.The application property of concrete, volume stability and durability need further to mention in the prior art Height, and the development of innovative cement formula to obtain high performance concrete.
Summary of the invention
In order to solve the problems, such as above-mentioned technology, that the purpose of the present invention is to provide a kind of application properties is good, volume is steady Qualitative high performance concrete good, durability is good.
To realize the above-mentioned technical purpose, the following technical solution is employed by the present invention:
A kind of high performance concrete is grouped as by the group of following parts by weight: 400~550 parts of cementitious material, coarse aggregate 1000~1200 parts, 600~750 parts of fine aggregate, 4~6 parts of composite water-reducing agent, 0.02~0.06 part of oil tea triterpenoid saponin, water 140 ~150 parts.
Wherein, the cementitious material by 50~60 parts by weight strength grades not less than 42.5 grades common portland cement, 15~20 weight part ratio surface areas are not less than 400kg/m3Regeneration concrete micro mist, 25~30 parts by weight steel-making slag powders composition.
The composite water-reducing agent by 80~100 parts by weight molecular levels 2400~5000 methacrylic polyoxyethylene Ether, 5~8 parts by weight of acrylic acid hydroxyl ethyl esters, 10~15 parts by weight of acrylic acid, 0.2~0.5 parts by weight mercaptopropionic acid, 0.1~0.5 Parts by weight ascorbic acid, the hydrogenperoxide steam generator of 0.4~1 parts by weight mass concentration 25~35%, 10~15 parts by weight quality are dense The sodium hydroxide solution of degree 30~35%, 20~40 parts by weight sodium gluconates, 1~2 parts by weight organic silicon defoamer and 800~ 850 parts by weight soft water composition.
The preparation process of the composite water-reducing agent is as follows:
(1) each raw material component is got out by said ratio;By methyl allyl polyoxyethylene ether, hydroxy-ethyl acrylate, have In machine silicon defoaming agent, 70 parts by weight soft water investment reaction kettle, hydrogenperoxide steam generator is stirred and be added, solution temperature in reaction kettle is made Warm naturally to 43~47 DEG C;
(2) acrylic acid and 40 parts by weight soft water are configured to solution I;By mercaptopropionic acid, ascorbic acid and 90 parts by weight water It is configured to solution II;
Stablize after 43~47 DEG C after solution temperature in kettle, starts that solution I and solution II are added dropwise into kettle;Solution I and molten After liquid II is added dropwise, continue insulation reaction 50~60 minutes;
(3) step (2) reaction product is neutralized to pH value with sodium hydroxide solution is 6;
(4) by reaction product, sodium gluconate and the remaining soft water after neutralization be configured to solid masses content be 14~ 16% composite water-reducing agent.
Preferably, I time for adding of solution is 180 minutes in step (2), II time for adding of solution is 210 minutes.
Compared with prior art, the method for the present invention have it is at least following the utility model has the advantages that
(1) composite water-reducing agent water-reducing rate used in the present invention is greater than 30%, and decrement reaches 25% or more, and concrete initially collapses Degree of falling reaches 220~230mm, and slump-loss is less than 15mm within 1 hour, and therefore, this concrete has high workability (height construction Property).
(2) present invention selects regeneration concrete micro mist for cement components, the Self-curing effect that regenerative micro powder has, with The decrement of composite water-reducing agent acts on, and is remarkably improved concrete early strong cracking resistance, and therefore, this concrete has high volume stability Property.
(3) relative dynamic elastic modulus retention rate of the concrete after being subjected to 200 Frozen-thawed cycleds is greater than 90%, therefore, this Concrete has high-durability.
Specific embodiment
Below with reference to embodiment, the present invention is further explained.In the following detailed description, it is only retouched by way of explanation Certain exemplary embodiments of the invention are stated.Undoubtedly, those skilled in the art will recognize, without departing from In the case where the spirit and scope of the present invention, the described embodiments may be modified in various different ways.
Embodiment 1
A kind of high performance concrete is grouped as by the group of following parts by weight: 400 parts of cementitious material, 1000 parts of coarse aggregate, 600 parts of fine aggregate, 4 parts of composite water-reducing agent, 0.02 part of oil tea triterpenoid saponin, 140 parts of water.
Wherein, common portland cement, 15 weights of the cementitious material by 50 parts by weight strength grades not less than 42.5 grades It measures part specific surface area and is not less than 400kg/m3Regeneration concrete micro mist, 25 parts by weight steel-making slag powders composition;Coarse aggregate and fine aggregate Well known materials in the prior art can be used, be no longer described in detail.
Methyl allyl polyoxyethylene ether, 5 weights of the composite water-reducing agent by 80 parts by weight molecular levels 2400~5000 Measure part hydroxy-ethyl acrylate, 10 parts by weight of acrylic acid, 0.2 parts by weight mercaptopropionic acid, 0.1 parts by weight ascorbic acid, 0.4 parts by weight The hydrogenperoxide steam generator of mass concentration 25~35%, the sodium hydroxide solution of 10 parts by weight mass concentrations 30~35%, 20 weight Part sodium gluconate, 1 parts by weight organic silicon defoamer and 800 parts by weight soft water composition.
The preparation process of the composite water-reducing agent is as follows:
(1) each raw material component is got out by said ratio;By methyl allyl polyoxyethylene ether, hydroxy-ethyl acrylate, have In machine silicon defoaming agent, 70 parts by weight soft water investment reaction kettle, hydrogenperoxide steam generator is stirred and be added, solution temperature in reaction kettle is made Warm naturally to 43~47 DEG C;
(2) acrylic acid and 40 parts by weight soft water are configured to solution I;By mercaptopropionic acid, ascorbic acid and 90 parts by weight water It is configured to solution II;
Stablize after 43~47 DEG C after solution temperature in kettle, starts that solution I and solution II are added dropwise into kettle;Control solution I Time for adding is 180 minutes, and II time for adding of solution is 210 minutes;After solution I and solution II are added dropwise, it is anti-to continue heat preservation It answers 50~60 minutes;
(3) step (2) reaction product is neutralized to pH value with sodium hydroxide solution is 6;
(4) reaction product, sodium gluconate and the remaining soft water after neutralization are configured to composite water-reducing agent.
Embodiment 2
A kind of high performance concrete is grouped as by the group of following parts by weight: 500 parts of cementitious material, 1100 parts of coarse aggregate, 650 parts of fine aggregate, 5 parts of composite water-reducing agent, 0.04 part of oil tea triterpenoid saponin, 144 parts of water.
Wherein, common portland cement, 18 weights of the cementitious material by 55 parts by weight strength grades not less than 42.5 grades It measures part specific surface area and is not less than 400kg/m3Regeneration concrete micro mist, 28 parts by weight steel-making slag powders composition.
Methyl allyl polyoxyethylene ether, 7 weights of the composite water-reducing agent by 90 parts by weight molecular levels 2400~5000 Measure part hydroxy-ethyl acrylate, 12 parts by weight of acrylic acid, 0.4 parts by weight mercaptopropionic acid, 0.3 parts by weight ascorbic acid, 0.7 parts by weight The hydrogenperoxide steam generator of mass concentration 25~35%, the sodium hydroxide solution of 12 parts by weight mass concentrations 30~35%, 30 weight Part sodium gluconate, 1.5 parts by weight organic silicon defoamers and 820 parts by weight soft water composition.
The preparation process of composite water-reducing agent please refers to embodiment 1, is no longer described in detail herein.
Embodiment 3
A kind of high performance concrete is grouped as by the group of following parts by weight: 550 parts of cementitious material, 1200 parts of coarse aggregate, 750 parts of fine aggregate, 6 parts of composite water-reducing agent, 0.06 part of oil tea triterpenoid saponin, 150 parts of water.
Wherein, common portland cement, 20 weights of the cementitious material by 60 parts by weight strength grades not less than 42.5 grades It measures part specific surface area and is not less than 400kg/m3Regeneration concrete micro mist, 30 parts by weight steel-making slag powders composition.
Methyl allyl polyoxyethylene ether, 8 weights of the composite water-reducing agent by 100 parts by weight molecular levels 2400~5000 Measure part hydroxy-ethyl acrylate, 15 parts by weight of acrylic acid, 0.5 parts by weight mercaptopropionic acid, 0.5 parts by weight ascorbic acid, 1 parts by weight matter Measure the hydrogenperoxide steam generator of concentration 25~35%, the sodium hydroxide solution of 15 parts by weight mass concentrations 30~35%, 40 parts by weight Sodium gluconate, 2 parts by weight organic silicon defoamers and 850 parts by weight soft water composition.
It is tested through practical Concrete, the concrete initial slump prepared through the invention reaches 220~230mm, and 1 Hour slump-loss is respectively less than 15mm, has good application property, volume stability and durability.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.It is any Those skilled in the art, made equivalent changes and modifications under the premise of not departing from design and the principle of the present invention, It should belong to the scope of protection of the invention.

Claims (3)

1. a kind of high performance concrete, which is characterized in that be grouped as by the group of following parts by weight: cementitious material 400~550 Part, 1000~1200 parts of coarse aggregate, 600~750 parts of fine aggregate, 4~6 parts of composite water-reducing agent, oil tea triterpenoid saponin 0.02~ 0.06 part, 140~150 parts of water;
The composite water-reducing agent by 80~100 parts by weight molecular levels 2400~5000 methyl allyl polyoxyethylene ether, 5~ 8 parts by weight of acrylic acid hydroxyl ethyl esters, 10~15 parts by weight of acrylic acid, 0.2~0.5 parts by weight mercaptopropionic acid, 0.1~0.5 parts by weight Ascorbic acid, the hydrogenperoxide steam generator of 0.4~1 parts by weight mass concentration 25~35%, 10~15 parts by weight mass concentrations 30~ 35% sodium hydroxide solution, 20~40 parts by weight sodium gluconates, 1~2 parts by weight organic silicon defoamer and 800~850 weights Measure part soft water composition;
The cementitious material is not less than 42.5 grades of common portland cement, 15~20 weight by 50~60 parts by weight strength grades Part specific surface area is not less than 400kg/m3Regeneration concrete micro mist, 25~30 parts by weight steel-making slag powders composition.
2. high performance concrete as described in claim 1, which is characterized in that the preparation process of the composite water-reducing agent is as follows:
(1) each raw material component is got out by the proportion of composite water-reducing agent described in claim 1;By methacrylic polyoxyethylene Ether, hydroxy-ethyl acrylate, organic silicon defoamer, 70 parts by weight soft water are put into reaction kettle, stir and be added hydrogenperoxide steam generator, Solution temperature in reaction kettle is set to warm naturally to 43~47 DEG C;
(2) acrylic acid and 40 parts by weight soft water are configured to solution I;Mercaptopropionic acid, ascorbic acid and 90 parts by weight soft water are matched Solution II is made;
Stablize after 43~47 DEG C after solution temperature in kettle, starts that solution I and solution II are added dropwise into kettle;Solution I and solution II After being added dropwise, continue insulation reaction 50~60 minutes;
(3) step (2) reaction product is neutralized to pH value with sodium hydroxide solution is 6;
(4) reaction product, sodium gluconate and the remaining soft water after neutralization are configured to solid masses content is 14~16% Composite water-reducing agent.
3. high performance concrete as claimed in claim 2, it is characterised in that: in step (2), I time for adding of solution is 180 points Clock, II time for adding of solution are 210 minutes.
CN201610878359.8A 2016-09-30 2016-09-30 A kind of high performance concrete Active CN106673567B (en)

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109824330A (en) * 2019-03-29 2019-05-31 江苏宇航建材科技有限公司 A kind of high-performance middle-and-low strength concrete
CN111116844A (en) * 2020-01-18 2020-05-08 广东汇强外加剂有限公司 Air-entraining type polycarboxylate superplasticizer and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105036598A (en) * 2015-07-27 2015-11-11 昆山市建国混凝土制品有限公司 Efficient concrete water reducing agent and concrete
CN105130347A (en) * 2015-07-10 2015-12-09 同济大学 Preparation method of high-work-performance regenerated concrete
CN105541162A (en) * 2016-02-01 2016-05-04 合肥元旭环保新型材料有限公司 High-performance water reducing agent used for concrete and preparation method thereof
CN105731919A (en) * 2016-01-05 2016-07-06 葛洲坝集团试验检测有限公司 Concrete with ultrahigh content of mixed fly ash

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001031457A (en) * 1999-07-16 2001-02-06 Taiheiyo Cement Corp High strength concrete

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105130347A (en) * 2015-07-10 2015-12-09 同济大学 Preparation method of high-work-performance regenerated concrete
CN105036598A (en) * 2015-07-27 2015-11-11 昆山市建国混凝土制品有限公司 Efficient concrete water reducing agent and concrete
CN105731919A (en) * 2016-01-05 2016-07-06 葛洲坝集团试验检测有限公司 Concrete with ultrahigh content of mixed fly ash
CN105541162A (en) * 2016-02-01 2016-05-04 合肥元旭环保新型材料有限公司 High-performance water reducing agent used for concrete and preparation method thereof

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