CN112897948A - Lightweight and tough cement-based composite material and preparation method thereof - Google Patents
Lightweight and tough cement-based composite material and preparation method thereof Download PDFInfo
- Publication number
- CN112897948A CN112897948A CN202110137345.1A CN202110137345A CN112897948A CN 112897948 A CN112897948 A CN 112897948A CN 202110137345 A CN202110137345 A CN 202110137345A CN 112897948 A CN112897948 A CN 112897948A
- Authority
- CN
- China
- Prior art keywords
- cement
- parts
- composite material
- based composite
- lightweight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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]
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a light tough cement-based composite material and a preparation method thereof, wherein the material comprises the following components in parts by weight: 30-50 parts of cement, 3-5 parts of industrial waste residues, 6-10 parts of light fine aggregates, 15-20 parts of water, 0.08-0.12 part of water reducing agent, 2-2.5 parts of expanding agent, 0.08-0.12 part of defoaming agent and 1.5-2 parts of organic polymer fibers. The invention prepares the light tough cement-based composite material with the apparent density less than 1650kg/m3, the shrinkage strain less than 850 mu epsilon, the compressive strength more than 60MPa, the bending strength more than 12MPa, the tensile strength more than 3MPa and the tensile strain more than 1.5 percent by optimizing the basic mixing proportion. In addition, the material has the advantages of stable performance, strong impact resistance, good durability, environmental protection and low price, and is suitable for fireproof and disaster-proof buildings, tunnel engineering lining structures, bridge engineering pavement structures and the like.
Description
Technical Field
The invention belongs to the technical field of pavement materials, and particularly relates to a light and tough cement-based composite material and a preparation method thereof.
Background
Because the common concrete material has the defects of great weight, large brittleness, easy cracking and the like, under the long-time load bearing action of a bridge, bridge deck pavement is often low in ultimate tensile stress, insufficient in shock resistance and poor in fatigue performance due to the concrete material, so that transverse and longitudinal cracks and even reticular cracks are easy to occur, and the safety and the attractiveness of the bridge are seriously influenced. At present, because the production cost of the engineering cement-based composite material is high, and because the material composition does not use coarse aggregate, the improvement of the formed strength under the normal curing condition is limited, the dry shrinkage generated in the hydration process of a matrix is large, the elastic modulus of the hardened material is low, the synergistic stress effect with the existing structure is poor, and the wide popularization of the engineering cement-based composite material in engineering application is hindered.
Disclosure of Invention
The embodiment of the invention aims to provide a lightweight and tough cement-based composite material and a preparation method thereof, so as to solve the problems of great self weight, poor toughness and high cost of the current cement-based composite material in the related technology. The material has the characteristics of light weight, high mechanical property, high deformability, low shrinkage, low price and the like, has the advantages of stable performance, high impact resistance, high durability and environmental friendliness, and is particularly suitable for bridge deck pavement engineering in bridge engineering.
In order to achieve the technical goal, the embodiment of the invention is realized by the following technical scheme:
in a first aspect, a lightweight and tough cement-based composite material is provided, which comprises the following components in percentage by weight: 30-50 parts of cement, 3-5 parts of industrial waste residues, 6-10 parts of light fine aggregates, 15-20 parts of water, 0.08-0.12 part of water reducing agent, 2-2.5 parts of expanding agent, 0.08-0.12 part of defoaming agent and 1.5-2 parts of organic polymer fibers.
Further, the cement is one or more of portland cement and ordinary portland cement.
Further, the industrial waste residue is superfine silica fume, SiO thereof2The content is more than 90 percent, and the average grain diameter is 8-12 mu m.
Further, the light fine aggregate is hollow microspheres obtained by sorting waste ash of a thermal power plant, and the particle size of the hollow microspheres is 45-300 microns.
Further, the main phases of the cenospheres are mullite and quartz.
Further, the water reducing agent is one or more of polycarboxylate solid powder, calcium lignosulfonate water reducing agent and naphthalene high-efficiency water reducing agent.
Further, the expanding agent is one or more of calcium sulphoaluminate solid powder and calcium oxide expanding agent.
Further, the defoaming agent is opaque light yellow liquid with the viscosity of 1000-4500 mPa & s, and the active substance of the defoaming agent is organic silicon.
Furthermore, the elastic modulus of the organic polymer fiber is 42-110 GPa, and the tensile strength is 1250-3000 GPa.
In a second aspect, there is provided a method of making a lightweight tough cement-based composite material according to the first aspect, the method comprising the steps of:
(1) mixing and stirring cement, industrial waste residue, light fine aggregate, a water reducing agent, an expanding agent and a defoaming agent uniformly;
(2) adding water, and continuously stirring until the material reaches a flowing state;
(3) and finally, adding the organic polymer fibers, and stirring to uniformly disperse the organic polymer fibers in the materials to obtain the light tough cement-based composite material.
The cement, the industrial waste residue, the lightweight fine aggregate, the water reducing agent, the expanding agent and the defoaming agent are mixed and stirred uniformly before being added with water and stirred, so that the additive is prevented from being dispersed unevenly; the organic polymer fiber is added after being stirred by adding water, which is beneficial to the uniform dispersion of the organic polymer fiber in the material.
According to the technical scheme, the embodiment of the invention has the beneficial effects that: the light tough cement-based composite material mainly comprises cement, industrial waste residues, light fine aggregates, organic polymer fibers, a water reducing agent, an expanding agent, a defoaming agent and water. The mechanical property of the material is optimized by doping industrial waste residues, light fine aggregates and organic polymer fibers, so that the aim of reducing the manufacturing cost is fulfilled. The invention prepares the product with apparent density less than 1600kg/m by optimizing the basic mixing proportion3The light tough cement-based composite material has shrinkage strain smaller than 850 mu epsilon, compressive strength larger than 60MPa, bending strength larger than 12MPa, tensile strength larger than 3MPa and tensile strain larger than 1.5 percent. In addition, the material of the invention has stable performance, strong impact resistance, good durability, environmental protection and the likeAnd the method has the advantage of low cost, and is particularly suitable for bridge deck pavement engineering in bridge engineering.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
FIG. 1 is a graph showing stress-strain relationship curves obtained by uniaxial tensile testing of a light-weight, tough cement-based composite material according to example 1.
FIG. 2 is a graph showing stress-strain relationship curves obtained by uniaxial tensile testing of the lightweight tough cement-based composite material of example 2.
FIG. 3 is a graph showing stress-strain relationship curves obtained by uniaxial tensile testing of the light-weight tough cement-based composite material of example 3.
Detailed Description
Specific examples of the present invention are described in detail below, but the present invention is not limited to only the following examples.
Example 1:
the lightweight and tough cement-based composite material suitable for bridge deck pavement provided by the embodiment comprises 50 parts by weight of cement, 5 parts by weight of industrial waste residues, 6 parts by weight of lightweight fine aggregates, 20 parts by weight of water, 0.12 part by weight of a water reducing agent, 2.5 parts by weight of an expanding agent, 0.12 part by weight of a defoaming agent and 2 parts by weight of organic polymer fibers. The cement is one or more of Portland cement and ordinary Portland cement, and Portland cement with the strength grade of 52.5R is adopted in the embodiment; the industrial waste residue is superfine silica fume, SiO thereof2The content is more than 90 percent, and the average grain diameter is 8-12 mu m. The light fine aggregate is hollow microspheres obtained by sorting waste ash of a thermal power plant, the particle size is 45-300 mu m, and the main phases of the hollow microspheres are mullite and quartz; the water reducing agent is one or more of polycarboxylate solid powder, calcium lignosulfonate water reducing agent and naphthalene high-efficiency water reducing agent, and in the embodiment, the polycarboxylate solid powder with the water reducing rate of 24-30% is adopted; the expanding agent is one or more of calcium sulphoaluminate solid powder and calcium oxide expanding agentIn the embodiment, calcium sulphoaluminate solid powder with low alkali content is adopted, the defoaming agent is opaque light yellow liquid with the viscosity of 1000-4500 mPa.s as an active substance, the active substance is organic silicon, and the organic polymer fiber is polyvinyl alcohol fiber with the length of 12mm, the diameter of 39mm, the elastic modulus of 42GPa and the tensile strength of 1250 GPa. Mixing and stirring cement, industrial waste residue, light fine aggregate, a water reducing agent, an expanding agent and a defoaming agent uniformly; adding water, and continuously stirring until the material reaches a flowing state; and finally, adding the organic polymer fibers, and stirring to uniformly disperse the organic polymer fibers in the materials to obtain the light tough cement-based composite material. As shown in Table 1, the lightweight tough cement-based composite material produced in this example had a density of 1559.6kg/m3The compression strength was 65.0MPa, the bending strength was 13.6MPa, and the shrinkage strain was 816.7. mu. epsilon. FIG. 1 is a graph showing the stress-strain relationship of the lightweight tough cement-based composite material of example 1 when subjected to uniaxial tensile test. It can be seen from the figure that the light tough cement-based composite material obtained in example 1 has a remarkable strain hardening phenomenon, cracks are dispersed harmlessly into fine saturated cracks during loading, and the tensile strength of example 1 is 4.1MPa and the tensile strain is 1.56% as shown in fig. 1.
Example 2:
the lightweight and tough cement-based composite material suitable for bridge deck pavement provided by the embodiment comprises 30 parts by weight of cement, 3 parts by weight of industrial waste residues, 10 parts by weight of lightweight fine aggregates, 15 parts by weight of water, 0.08 part by weight of water reducing agent, 2 parts by weight of expanding agent, 0.08 part by weight of defoaming agent and 2 parts by weight of organic polymer fibers. The cement is Portland cement with the strength grade of 52.5R, the industrial waste residue is superfine silica fume, the light fine aggregate is hollow microspheres with the grain size of 45-300 mu m, the water reducing agent is polycarboxylate solid powder with the water reducing rate of 24-30%, the expanding agent is low-alkali content calcium sulphoaluminate solid powder, the defoaming agent is a defoaming agent with the active substance being organic silicon, and the organic polymer fiber is polyvinyl alcohol fiber with the length of 12mm, the diameter of 39mm, the elastic modulus of 42GPa and the tensile strength of 1250 GPa. Mixing and stirring cement, industrial waste residue, light fine aggregate, water reducing agent, expanding agent and defoaming agentUniformly stirring; adding water, and continuously stirring until the material reaches a flowing state; and finally, adding the organic polymer fibers, and stirring to uniformly disperse the organic polymer fibers in the materials to obtain the light tough cement-based composite material. As shown in Table 1, the lightweight tough cement-based composite material produced in this example had a density of 1559.6kg/m3The compression strength was 63.9MPa, the bending strength was 14.7MPa, and the shrinkage strain was 726.3. mu. epsilon. FIG. 2 is a graph showing stress-strain relationship curves obtained by uniaxial tensile testing of the lightweight tough cement-based composite material of example 2. It can be seen from the figure that the lightweight tough cement-based composite material obtained in example 2 has a remarkable strain hardening phenomenon, cracks are dispersed harmlessly into fine saturated cracks during loading, and the tensile strength and the tensile strain of example 2 are 3.6MPa and 1.58% respectively, as shown in fig. 2.
Example 3:
the lightweight and tough cement-based composite material suitable for bridge deck pavement provided by the embodiment comprises 50 parts by weight of cement, 5 parts by weight of industrial waste residues, 6 parts by weight of lightweight fine aggregates, 20 parts by weight of water, 0.12 part by weight of a water reducing agent, 2.5 parts by weight of an expanding agent, 0.12 part by weight of a defoaming agent and 1.5 parts by weight of organic polymer fibers. The cement is Portland cement with the strength grade of 52.5R, the industrial waste residue is superfine silica fume, the light fine aggregate is hollow microspheres with the grain size of 45-300 mu m, the water reducing agent is polycarboxylate solid powder with the water reducing rate of 24-30%, the expanding agent is low-alkali content calcium sulphoaluminate solid powder, the defoaming agent is a defoaming agent with the active substance being organic silicon, and the organic polymer fiber is polyethylene fiber with the length of 12mm, the diameter of 24mm, the elastic modulus of 110GPa and the tensile strength of 3000 GPa. Mixing and stirring cement, industrial waste residue, light fine aggregate, a water reducing agent, an expanding agent and a defoaming agent uniformly; adding water, and continuously stirring until the material reaches a flowing state; and finally, adding the organic polymer fibers, and stirring to uniformly disperse the organic polymer fibers in the materials to obtain the light tough cement-based composite material. As shown in Table 1, the lightweight tough cement-based composite material produced in this example had a density of 1620.9kg/m3The compression strength was 75.5MPa, the bending strength was 16.6MPa, and the shrinkage strain was 843.2. mu. epsilon. FIG. 3 is a schematic view of an embodimentThe stress-strain relationship curve of the light-weight toughness cement-based composite material in example 3 is shown when the material is subjected to uniaxial tensile test. It can be seen from the figure that the light-weight tough cement-based composite material obtained in example 3 has a remarkable strain hardening phenomenon, cracks are dispersed harmlessly into fine saturated cracks during loading, and the tensile strength of example 3 is 3.3MPa and the tensile strain is 2.56% as shown in fig. 3.
For the test piece formed according to the proportion, the preparation method and the curing system, the density, the compressive strength, the bending strength and the shrinkage strain of the light and tough cement-based composite material at the age of 28d are measured by referring to GBT 29417-. The tensile strength and ultimate tensile strain in table 1 are obtained from the stress-strain curves in fig. 1, 2 and 3, and the test results are shown in table 1.
Table 1: 28d performance test results of different proportions
The results in the table show that compared with C50 concrete, the density of the light tough cement-based composite material is reduced by about 30-40%, while the compressive strength is increased by more than 10MPa, and the effects of light weight and high strength are achieved. Due to the excellent bridging effect of the organic polymer fibers, the bending strength and the tensile strength are improved by more than two times compared with those of C50 concrete, the ultimate tensile strain of the lightweight and tough cement-based composite material is more than five hundred times, and the attached drawings show an obvious strain hardening phenomenon. In addition, at present, industrial waste residues and solid wastes generated by power plants are not fully utilized, and only landfill treatment causes great harm to the environment. If industrial waste residues and solid waste generated by a power plant are added into the light and tough cement-based composite material as a regenerated cementing material and a regenerated fine aggregate, a large amount of waste can be recycled, so that the environmental pollution is reduced, and the raw material cost of the light and tough cement-based composite material is greatly reduced. The hollow microspheres with low density are used as light fine aggregates, and are doped with organic polymer fibers to increase the toughness of the material, the hollow microspheres have high strength, so that the mechanical property of a light-toughness cement-based composite material can be ensured, and meanwhile, the interface bonding between the hollow microspheres and a cement matrix is weak, so that the fiber can be pulled out due to the introduced defects, the bridging effect of the organic polymer fibers is fully exerted, and higher bending toughness and tensile ductility are expressed.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. The light tough cement-based composite material is characterized by comprising the following components in parts by weight: 30-50 parts of cement, 3-5 parts of industrial waste residues, 6-10 parts of light fine aggregates, 15-20 parts of water, 0.08-0.12 part of water reducing agent, 2-2.5 parts of expanding agent, 0.08-0.12 part of defoaming agent and 1.5-2 parts of organic polymer fibers.
2. The lightweight tough cement-based composite material according to claim 1, wherein the cement is one or more of portland cement and ordinary portland cement.
3. The lightweight tough cement-based composite material according to claim 1, wherein the industrial waste residue is ultrafine silica fume, SiO thereof2The content is more than 90 percent, and the average grain diameter is 8-12 mu m.
4. The lightweight tough cement-based composite material according to claim 1, wherein the lightweight fine aggregate is cenospheres obtained by sorting waste ash of a thermal power plant, and the particle size thereof is 45 to 300 μm.
5. The lightweight tough cement-based composite material according to claim 1, wherein the predominant phases of the cenospheres are mullite and quartz.
6. The lightweight tough cement-based composite material according to claim 1, wherein the water reducing agent is one or more of a polycarboxylate solid powder, a calcium lignosulfonate water reducing agent, and a naphthalene-based high-efficiency water reducing agent.
7. The lightweight tough cement-based composite material according to claim 1, wherein the swelling agent is one or more of calcium sulfoaluminate solid powder and calcium oxide swelling agent.
8. The light tough cement-based composite material as claimed in claim 1, wherein the defoaming agent is an opaque light yellow liquid with viscosity of 1000-4500 mPa-s, and the active substance is organosilicon.
9. The lightweight tough cement-based composite material according to claim 1, wherein the organic polymer fiber has an elastic modulus of 42 to 110GPa and a tensile strength of 1250 to 3000 GPa.
10. The method of claim 1, comprising the steps of:
(1) mixing and stirring cement, industrial waste residue, light fine aggregate, a water reducing agent, an expanding agent and a defoaming agent uniformly;
(2) adding water, and continuously stirring until the material reaches a flowing state;
(3) and finally, adding the organic polymer fibers, and stirring to uniformly disperse the organic polymer fibers in the materials to obtain the light tough cement-based composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110137345.1A CN112897948B (en) | 2021-02-01 | 2021-02-01 | Lightweight and tough cement-based composite material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110137345.1A CN112897948B (en) | 2021-02-01 | 2021-02-01 | Lightweight and tough cement-based composite material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112897948A true CN112897948A (en) | 2021-06-04 |
| CN112897948B CN112897948B (en) | 2021-12-28 |
Family
ID=76121018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110137345.1A Active CN112897948B (en) | 2021-02-01 | 2021-02-01 | Lightweight and tough cement-based composite material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112897948B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115534102A (en) * | 2022-09-21 | 2022-12-30 | 南京宁通智能交通技术研究院有限公司 | Ultrahigh-toughness cement-based composite material for roads and preparation method thereof |
| WO2024098481A1 (en) * | 2022-12-02 | 2024-05-16 | 南京宁通智能交通技术研究院有限公司 | Ultra-high toughness cement-based composite material for roads, and preparation method therefor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101498196B1 (en) * | 2014-07-08 | 2015-03-09 | (주)유니텍기술 | Lightweight hybrid water-repellent polymer mortar composition for repairing and protecting concrete structure, and construction method using the same |
| CN107098657A (en) * | 2017-06-07 | 2017-08-29 | 南京理工大学 | With enhanced functionally gradient cement-base composite material of nano material and preparation method thereof |
| CN110092622A (en) * | 2019-05-05 | 2019-08-06 | 浙江大学 | A kind of green cement based composites of the high ductility of lower shrinkage |
| CN110776334A (en) * | 2019-10-31 | 2020-02-11 | 中建材料技术研究成都有限公司 | Cement-based wallboard with large hollow rate and ultrahigh toughness and preparation method thereof |
-
2021
- 2021-02-01 CN CN202110137345.1A patent/CN112897948B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101498196B1 (en) * | 2014-07-08 | 2015-03-09 | (주)유니텍기술 | Lightweight hybrid water-repellent polymer mortar composition for repairing and protecting concrete structure, and construction method using the same |
| CN107098657A (en) * | 2017-06-07 | 2017-08-29 | 南京理工大学 | With enhanced functionally gradient cement-base composite material of nano material and preparation method thereof |
| CN110092622A (en) * | 2019-05-05 | 2019-08-06 | 浙江大学 | A kind of green cement based composites of the high ductility of lower shrinkage |
| CN110776334A (en) * | 2019-10-31 | 2020-02-11 | 中建材料技术研究成都有限公司 | Cement-based wallboard with large hollow rate and ultrahigh toughness and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115534102A (en) * | 2022-09-21 | 2022-12-30 | 南京宁通智能交通技术研究院有限公司 | Ultrahigh-toughness cement-based composite material for roads and preparation method thereof |
| CN115534102B (en) * | 2022-09-21 | 2023-11-17 | 南京宁通智能交通技术研究院有限公司 | Ultrahigh-toughness cement-based composite material for road and preparation method thereof |
| WO2024098481A1 (en) * | 2022-12-02 | 2024-05-16 | 南京宁通智能交通技术研究院有限公司 | Ultra-high toughness cement-based composite material for roads, and preparation method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112897948B (en) | 2021-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107445545B (en) | High-ductility cement-based composite material for repairing hydraulic concrete structure | |
| CN110395955B (en) | Anti-permeability and anti-freeze-thaw self-compacting concrete and preparation method thereof | |
| CN103030355B (en) | Light high-crack-resistance cement concrete | |
| CN110282935B (en) | Fiber-reinforced concrete and preparation method thereof | |
| CN112897948B (en) | Lightweight and tough cement-based composite material and preparation method thereof | |
| CN111320437A (en) | Anti-crack concrete and preparation method thereof | |
| CN110776287A (en) | Fiber self-compacting concrete and manufacturing method thereof | |
| CN115893959B (en) | 3D printing desert sand ultra-high ductility concrete and preparation method thereof | |
| CN113105179A (en) | Anti-cracking waterproof concrete and preparation method thereof | |
| CN111892362A (en) | Building mortar and preparation method thereof | |
| CN108249854B (en) | Seawater-stirred fiber-reinforced cement-based ultra-high-ductility concrete and preparation thereof | |
| CN111548087A (en) | Anti-crack concrete | |
| CN114751701B (en) | High-toughness cement-based composite material and preparation method thereof | |
| CN114591039B (en) | Steel-PVA hybrid fiber reinforced concrete waterproof and impervious material and preparation method thereof | |
| CN116283168A (en) | Self-stress desert sand ultra-high ductility concrete and preparation method thereof | |
| CN115286309A (en) | Island-reef ecological high-strength high-ductility cement-based composite material and preparation method thereof | |
| CN114249570A (en) | NiTi alloy fiber concrete and preparation method thereof | |
| CN113307578A (en) | Multifunctional UHPC and preparation method thereof | |
| CN113582627A (en) | Nano-alumina modified ultra-light cement-based composite material and preparation method and application thereof | |
| JP2004315251A (en) | High strength/high toughness cement compound material and method of manufacturing the same | |
| CN114956713B (en) | Nonmetal fiber reinforced ultra-high performance concrete | |
| CN115073036B (en) | Toughening functional filler and high-toughness concrete using same for road and bridge engineering | |
| CN117361975B (en) | High-doping-amount iron tailing sand ultra-high-ductility concrete and preparation method thereof | |
| CN117263605A (en) | Preparation method of compressive BFRC (bidirectional fiber reinforced concrete) sample based on C50-grade plain concrete | |
| Kareem et al. | Mechanical properties of self-compacted concrete made withsteel fibers from discarded steel fibers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |