CN106673552A - Ultrahigh-toughness cement-based composite material and preparation method thereof - Google Patents
Ultrahigh-toughness cement-based composite material and preparation method thereof Download PDFInfo
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- CN106673552A CN106673552A CN201611206668.7A CN201611206668A CN106673552A CN 106673552 A CN106673552 A CN 106673552A CN 201611206668 A CN201611206668 A CN 201611206668A CN 106673552 A CN106673552 A CN 106673552A
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- Prior art keywords
- cement
- composite material
- parts
- base composite
- superhigh tenacity
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Classifications
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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
- 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
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The invention provides an ultrahigh-toughness cement-based composite material. The ultrahigh-toughness cement-based composite material is prepared from 200 to 250 parts of cement, 500 to 550 parts of solid wastes, 200 to 250 parts of quartz sand, 200 to 250 parts of water, 6.5 to 8 parts of water reduction agent, 0.8 to 1.2 parts of thickener, and 15 to 20 parts of polyvinyl alcohol fiber. The invention also provides a preparation method of the ultrahigh-toughness cement-based composite material. The ultrahigh-toughness cement-based composite material has the advantages that a large amount of fly ash and ore powder is utilized, and the industrial waste slag is consumed, so that the consumption of energy sources is effectively decreased, the pollution to environment is decreased, and the utilization rate of industrial waste slag is increased; the sources of raw materials are wide, and the ultrahigh-toughness cement-based composite material is conveniently popularized and applied to the engineering field of China.
Description
Technical field
The invention belongs to materialogy field, is related to a kind of composite material for building, a kind of specifically superhigh tenacity water
Cement-based composite material and preparation method thereof.
Background technology
Concrete as important civil engineering material, by simplicity of drawing materials, simple process, low cost, strong adaptability, anti-
Many advantages, such as Compressive Strength is high, application amount is increasing, and range of application is also more and more extensive.But, due to concrete itself
Tensile strength is low, from the intrinsic weakness such as great, fragility is big, add xoncrete structure easily occur during construction with use it is different
The crack of degree and multi-form, and concrete itself control critical eigenvalue ability it is poor the problems such as, govern that concrete is this to be built
Build the application of material.
In order to meet modern project requirement, overcome concrete material fragility big, the shortcomings of Crack Control ability, both at home and abroad
Scholar starts the cement based by the theoretical research of Micromechanics, mesomechanics, fracture mechanics with typical strain hardening characteristic
Composite.University of Michigan of U.S. Victor Li professors and Massachusetts Polytechnics Christopher Leung are taught in 1992
The paper that year delivers in U.S. ASCE Journal of Engineering Mechanics establishes fiber cement-based composite wood
The Micromechanics basis of material (Engineered Cementitious Composites, commonly referred to ECC) and design criteria, its
Afterwards all over the world researcher to ECC materials and its application start in-depth study.Hereafter, the various high-ductilities without coarse aggregate
Property cement-base composite material has become a new important branch outside cement concrete.Made by various fine aggregates and powder
For raw material, using the processing of corresponding technique after, obtain various good toughness, strong adaptability, and with multiple crack growth property
High tenacity cement-base composite material is continued to bring out.But, traditional all kinds of composite material for building are with substantial amounts of flyash
As raw material, the single application for limiting such material in engineering of raw material；Additionally, existing substantial amounts of industrial residue includes steel
The utilization rates such as slag, breeze, flyash are relatively low, land occupation, waste of resource, and serious pollution is caused to environment, govern me
The target of state's natural resourcess, environmental conservation and the sustainable development of built environment friendly society is reached.
The content of the invention
For above-mentioned technical problem of the prior art, the invention provides a kind of superhigh tenacity cement-base composite material and
Its preparation method, described this superhigh tenacity cement-base composite material and preparation method thereof will solve coagulation of the prior art
Native tensile strength is low, from the technical problem that great, fragility is big, control critical eigenvalue ability is poor.
The invention provides a kind of superhigh tenacity cement-base composite material, by cement, solid waste, quartz sand, water, subtract
Water preparation, thickening agent and vinal composition, the parts by weight of each component are as follows：
200 ~ 250 parts of cement；
500 ~ 550 parts of solid waste；
200 ~ 250 parts of quartz sand；
200 ~ 250 parts of water；
6.5 ~ 8 parts of water reducer；
0.8 ~ 1.2 part of thickening agent；
15 ~ 20 parts of vinal；
Described solid waste is made up of flyash with breeze, and the percentage by weight that wherein flyash accounts for solid waste is
50% ~ 55%, it is 45% ~ 50% that breeze accounts for the percentage by weight of solid waste.
Further, described cement is the portland cement of 52.5 grades of strength grade.
Further, described flyash is one-level flyash, and meso-position radius (D50) are 19.45 m.
Further, described breeze is one-level breeze, and meso-position radius (D50) are 4.732 m.
Further, described water reducer is polycarboxylate high performance water-reducing agent.
Further, described thickening agent is methyl cellulose ether.
Further, described quartz sand is the quartz sand of 30 ~ 100 mesh, and maximum particle diameter is less than 0.6mm.
Further, described vinal length is 12mm, and a diameter of 39 μm, tensile strength is 1620MPa, bullet
Property modulus be 42.8GPa.
Present invention also offers a kind of preparation method of above-mentioned superhigh tenacity cement-base composite material, it is characterised in that bag
Include following steps：
1) each reacting substance is weighed according to parts by weight,
2) by cement, flyash, breeze, quartz sand and thickening agent are added in agitated kettle, in the 62 ± 5r/min that revolves round the sun, rotation
It is dry under conditions of 140 ± 5r/min to stir 2 ~ 4 minutes to uniform.
3) water and water reducer are added in agitated kettle, in the 125 ± 10r/min that revolves round the sun, the bar of 285 ± 10r/min of rotation
Stir 3 ~ 5 minutes under part, until fluidity of slurry reaches requirement；
4) vinal is added, is stirred for 5 ~ 8 minutes, until vinal is uniformly dispersed, that is, obtain superhigh tenacity
Cement-base composite material.
In a kind of scheme of the invention preferred, described solid waste by weight percentage, by 45% breeze and
55% flyash composition.
In another kind scheme of the invention preferred, described solid waste by weight percentage, by 48% breeze
Flyash composition with 52%.
In yet another approach of the invention preferred, described solid waste by weight percentage, by 50% breeze
Flyash composition with 50%.
Further, the preferred polycarboxylate high performance water-reducing agent of described water reducer or naphthalene series high-efficiency water-reducing agent, further
Preferably polycarboxylate high performance water-reducing agent.
Further, the preferred methyl cellulose ether of described thickening agent or hydroxypropyl methyl cellulose ether, further preferably
For methyl cellulose ether.
Discarded industrial residue flyash is carried out profit again by the present invention with breeze in high tenacity cement-base composite material field
With, industrial residue is consumed, the consumption of the energy is effectively reduced, give full play to industrial residue effect and solve flyash and breeze
The problem of environmental pollution, while the source of superhigh tenacity cement-base composite material raw material is increased, in order to preferably promote
Using the utilization rate of reduction environmental pollution and raising industrial residue.
The present invention is compared with prior art, and its technological progress is significant.The superhigh tenacity cement based composite wood of the present invention
Material has the advantages that：
1. material property is good:
The present invention 3 days material properties be：Tensile strength：2.62MPa, limiting strain：5.6%；Material property is within 7 days：Tension is strong
Degree：3.76MPa, limiting strain：3.1%；Material property is within 28 days：Tensile strength：5.5MPa, limiting strain is 2.3%.
2. preparation process is simple, newly mixes material favorable working performance:
The preparation process is simple of the present invention, common concrete batch plant can meet the needs for preparing, whole whipping process
Used time is only 10 ~ 17 minutes.The favorable working performance of material is newly mixed, the liquidity scale is 14 ~ 16cm.
3. low cost:
The present invention is compared with prior art, and its technological progress is significant.A kind of flyash of the present invention is super with what breeze was mixed again
High tenacity cement-base composite material, combines the advantage of the fiber reinforced cement-based composite material of traditional high tenacity, in the feed
A large amount of cheap flyash and breeze are with the addition of, on the one hand can weaken the intensity of matrix material, optimization matrix material and poly- second
The contact surface of enol fiber, it is ensured that the high tenacity of material, another aspect flyash and breeze source more extensively, reduce original
The price of material.It is demonstrated experimentally that the superhigh tenacity cement-base composite material that a kind of flyash of the present invention is mixed again with breeze has
Superhigh tenacity and intensity.
Description of the drawings
Fig. 1 is the stress-strain of the superhigh tenacity cement-base composite material that the flyash of example 3 and breeze are mixed again and age
Relation contrast schematic diagram.
Fig. 2 is the superhigh tenacity cement-base composite material mixed again of the flyash of example 1-3 and breeze and tradition ECC is answered
Power-strain contrast schematic diagram.
Fig. 3 is the multiple crack growth after the superhigh tenacity cement-base composite material stretching that the flyash of example 3 and breeze are mixed again
Figure.
Specific embodiment
Embodiment 1：
The parts by weight of cement, solid waste, fine aggregate, water, water reducer, thickening agent and fiber are：225 parts, 525 parts, 225
Part, 225 parts, 7 parts, 1 part, 18 parts.The match ratio uses one-level flyash and the weight ratio of one-level breeze, breeze and flyash
For：45%：55%.The cement of corresponding parts by weight, flyash, breeze, sand and thickening agent are added in agitated kettle, it is dry at a slow speed to stir
3 minutes to uniform.Agitated kettle is added by water is dissolved in by the water reducer of described number, is stirred soon 5 minutes, until fluidity of slurry reaches
To requiring.The fiber of the number is added, is stirred for 6 minutes, until vinal is uniformly dispersed, that is, obtain described surpassing
High tenacity cement-base composite material.
Described cement is 52.5 grades of portland cements；Described fine aggregate is formed by quartz sand screening, and maximum particle diameter is not
More than 0.6mm.Described water reducer is polycarboxylate high performance water-reducing agent；Described thickening agent is methyl cellulose ether thickening
Agent.
Material property is as follows within 3 days：Tensile strength is 3.97MPa, and limiting strain is 4.6%；Material property is as follows within 7 days：Tension
Intensity is 4.26MPa, and limiting strain is 4.1%；The performance of 28 days materials is as follows：Tensile strength is 5.87MPa, and limiting strain is
2.2%.Its liquidity scale is 14cm.
Embodiment 2：
The parts by weight of cement, solid waste, fine aggregate, water, water reducer, thickening agent and fiber are：225 parts, 525 parts, 225
Part, 225 parts, 7 parts, 1 part, 18 parts.The match ratio uses one-level flyash and the weight ratio of one-level breeze, breeze and flyash
For：48 %：52%.The cement of corresponding parts by weight, flyash, breeze, sand and thickening agent are added in agitated kettle, are done at a slow speed
3 minutes are stirred to uniform.Agitated kettle is added by water is dissolved in by the water reducer of described number, is stirred soon 5 minutes, until fluidity of slurry
Reach requirement.The fiber of the number is added, is stirred for 6 minutes, until vinal is uniformly dispersed, that is, obtain described
Superhigh tenacity cement-base composite material.
Described cement is 52.5 grades of portland cements；Described fine aggregate is formed by quartz sand screening, and maximum particle diameter is not
More than 0.6mm.Described water reducer is polycarboxylate high performance water-reducing agent；Described thickening agent is methyl cellulose ether thickening
Agent.
The performance of 3 days materials is as follows：Tensile strength is 3.11MPa, and limiting strain is 4.5%；The performance of 7 days materials is as follows：
Tensile strength is 3.89MPa, and limiting strain is 2.9%；The performance of 28 days materials is as follows：Tensile strength is 4.76MPa, and the limit should
It is changed into 2.3%.Its liquidity scale is 15cm.
Embodiment 3：
The parts by weight of cement, solid waste, fine aggregate, water, water reducer, thickening agent and fiber are：225 parts, 525 parts, 225
Part, 225 parts, 7 parts, 1 part, 18 parts.The match ratio uses one-level flyash and the weight ratio of one-level breeze, breeze and flyash
For：50%：50%.The cement of corresponding parts by weight, flyash, breeze, sand and thickening agent are added in agitated kettle, it is dry at a slow speed to stir
3 minutes to uniform.Agitated kettle is added by water is dissolved in by the water reducer of described number, is stirred soon 6 minutes, until fluidity of slurry reaches
To requiring.The fiber of the number is added, is stirred for 8 minutes, until vinal is uniformly dispersed, that is, obtain described surpassing
High tenacity cement-base composite material.
Described cement is 52.5 grades of portland cements；Described fine aggregate is formed by quartz sand screening, and maximum particle diameter is not
More than 0.6mm.Described water reducer is polycarboxylate high performance water-reducing agent；Described thickening agent is methyl cellulose ether thickening
Agent.
The performance of 3 days materials is as follows：Tensile strength is 2.82MPa, and limiting strain is 5.3%；The performance of 7 days materials is as follows：
Tensile strength is 3.76MPa, and limiting strain is 3.1%；The performance of 28 days materials is as follows：Tensile strength is 5.5MPa, limiting strain
For 2.2%.Its liquidity scale is 15.7cm.
The above is only the preferred embodiment of the present invention, it should be pointed out that：For the those of ordinary skill of technical field
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (9)
1. a kind of superhigh tenacity cement-base composite material, it is characterised in that by cement, solid waste, quartz sand, water, diminishing
Agent, thickening agent and vinal composition, the parts by weight of each component are as follows：
200 ~ 250 parts of cement；
500 ~ 550 parts of solid waste；
200 ~ 250 parts of quartz sand；
200 ~ 250 parts of water；
6.5 ~ 8 parts of water reducer；
0.8 ~ 1.2 part of thickening agent；
15 ~ 20 parts of vinal；
Described solid waste is made up of flyash with breeze, and the percentage by weight that wherein flyash accounts for solid waste is
50% ~ 55%, it is 45% ~ 50% that breeze accounts for the percentage by weight of solid waste.
2. a kind of superhigh tenacity cement-base composite material according to claim 1, it is characterised in that：Described cement is strong
The portland cement of 2.5 grades of class 5 of degree.
3. a kind of superhigh tenacity cement-base composite material according to claim 1, it is characterised in that：Described flyash is
One-level flyash, meso-position radius are 19.45 m.
4. a kind of superhigh tenacity cement-base composite material according to claim 1, it is characterised in that：Described breeze is one
Level breeze, meso-position radius are 4.732 m.
5. a kind of superhigh tenacity cement-base composite material according to claim 1, it is characterised in that：Described water reducer is
Polycarboxylate high performance water-reducing agent.
6. a kind of superhigh tenacity cement-base composite material according to claim 1, it is characterised in that：Described thickening agent is
Methyl cellulose ether.
7. a kind of superhigh tenacity cement-base composite material according to claim 1, it is characterised in that：Described quartz sand is
The quartz sand of 30 ~ 100 mesh, maximum particle diameter is less than 0.6mm.
8. a kind of superhigh tenacity cement-base composite material according to claim 1, it is characterised in that：Described polyvinyl alcohol
The length of fiber is 12mm, and a diameter of 39 μm, tensile strength is 1620MPa, and elastic modelling quantity is 42.8GPa.
9. the preparation method of a kind of superhigh tenacity cement-base composite material described in claim 1, it is characterised in that including following
Step：
1）Each reacting substance is weighed according to parts by weight；
2）Cement, flyash, breeze, quartz sand and thickening agent are added in agitated kettle, in the 62 ± 5r/min that revolves round the sun, rotation
It is dry under conditions of 140 ± 5r/min to stir 2 ~ 4 minutes to uniform；
3）Water and water reducer are added in agitated kettle, in the 125 ± 10r/min that revolves round the sun, under conditions of 285 ± 10r/min of rotation
Stirring 3 ~ 5 minutes, until fluidity of slurry reaches requirement；
4）Vinal is added, is stirred for 5 ~ 8 minutes, until vinal is uniformly dispersed, that is, obtain superhigh tenacity
Cement-base composite material.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107417199A (en) * | 2017-06-01 | 2017-12-01 | 上海理工大学 | A kind of superhigh tenacity cement-base composite material and preparation method thereof |
| CN109942257A (en) * | 2019-04-24 | 2019-06-28 | 山东省交通规划设计院 | A kind of road superhigh tenacity cement-base composite material and its preparation method and application |
| CN110818347A (en) * | 2019-10-31 | 2020-02-21 | 中建材料技术研究成都有限公司 | High-toughness cement-based composite material based on construction waste micro powder and preparation method thereof |
| CN112521080A (en) * | 2020-12-27 | 2021-03-19 | 南京高延科技新材料有限公司 | High-toughness wear-resistant cement-based repairing material for ground and preparation method thereof |
| CN113816684A (en) * | 2021-09-30 | 2021-12-21 | 上海市建筑科学研究院有限公司 | Ultra-high-ductility cement-based composite material for anti-permeability reinforcement and preparation method thereof |
| CN114988810A (en) * | 2022-06-20 | 2022-09-02 | 长葛市金诺混凝土有限公司 | High-ductility cement-based composite material |
| CN115466090A (en) * | 2022-09-29 | 2022-12-13 | 河北量子智能科技有限公司 | Cement-based 3D printing material using solid waste and preparation method and application thereof |
| CN115959865A (en) * | 2022-05-07 | 2023-04-14 | 广州增城正源建设工程检测中心有限公司 | Novel wear-resistant super-large strain green engineering cement-based composite material of rubber powder and plastic powder and preparation method thereof |
| CN115959865B (en) * | 2022-05-07 | 2024-05-03 | 广州增城正源建设工程检测中心有限公司 | Rubber powder, plastic powder, wear-resistant super-strain novel green engineering cement-based composite material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107417199A (en) * | 2017-06-01 | 2017-12-01 | 上海理工大学 | A kind of superhigh tenacity cement-base composite material and preparation method thereof |
| CN109942257A (en) * | 2019-04-24 | 2019-06-28 | 山东省交通规划设计院 | A kind of road superhigh tenacity cement-base composite material and its preparation method and application |
| CN110818347A (en) * | 2019-10-31 | 2020-02-21 | 中建材料技术研究成都有限公司 | High-toughness cement-based composite material based on construction waste micro powder and preparation method thereof |
| CN112521080A (en) * | 2020-12-27 | 2021-03-19 | 南京高延科技新材料有限公司 | High-toughness wear-resistant cement-based repairing material for ground and preparation method thereof |
| CN113816684A (en) * | 2021-09-30 | 2021-12-21 | 上海市建筑科学研究院有限公司 | Ultra-high-ductility cement-based composite material for anti-permeability reinforcement and preparation method thereof |
| CN115959865A (en) * | 2022-05-07 | 2023-04-14 | 广州增城正源建设工程检测中心有限公司 | Novel wear-resistant super-large strain green engineering cement-based composite material of rubber powder and plastic powder and preparation method thereof |
| CN115959865B (en) * | 2022-05-07 | 2024-05-03 | 广州增城正源建设工程检测中心有限公司 | Rubber powder, plastic powder, wear-resistant super-strain novel green engineering cement-based composite material and preparation method thereof |
| CN114988810A (en) * | 2022-06-20 | 2022-09-02 | 长葛市金诺混凝土有限公司 | High-ductility cement-based composite material |
| CN115466090A (en) * | 2022-09-29 | 2022-12-13 | 河北量子智能科技有限公司 | Cement-based 3D printing material using solid waste and preparation method and application thereof |
| CN115466090B (en) * | 2022-09-29 | 2023-08-11 | 河北量子智能科技有限公司 | Cement-based 3D printing material utilizing solid waste as well as preparation method and application thereof |
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