CN108455951A - A kind of high-strength and high-ductility cement-based material and preparation method thereof - Google Patents
A kind of high-strength and high-ductility cement-based material and preparation method thereof Download PDFInfo
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- CN108455951A CN108455951A CN201810388400.2A CN201810388400A CN108455951A CN 108455951 A CN108455951 A CN 108455951A CN 201810388400 A CN201810388400 A CN 201810388400A CN 108455951 A CN108455951 A CN 108455951A
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- concrete
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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
- C04B28/14—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 calcium sulfate 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
- C04B2111/2038—Resistance against physical degradation
-
- 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
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent 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
- C04B2201/50—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]
Abstract
The invention discloses a kind of high-strength and high-ductility cement-based materials and preparation method thereof, are made of the raw material of following parts by weight：20 30 parts of 10 20 parts of polymer emulsion, 70 80 parts of cement, 5 10 parts of carbon fiber, 28 parts of phenolic resin, 15 parts of ethylene carbonate, 0.3 1.2 parts of coupling agent, 0.2 0.6 parts of dispersant and water.The compound incorporation that the present invention passes through polymer emulsion, carbon fiber, while increasing the adhesion strength of steel fibre and concrete after concrete substrate flexibility and concrete cracking, to achieve the purpose that enhance toughness of concrete, and polymer emulsion is done enough to improve cement matrix itself toughness, and polymer is dehydrated in concrete hardens into three-dimensional continuous film structure, intertexture is interspersed in concrete so that concrete shows high-tension, good plasticity, high impact flexibility.
Description
Technical field
The present invention relates to building material technical fields, and in particular to a kind of high-strength and high-ductility cement-based material and its preparation side
Method.
Background technology
Construction material is the basis of architectural engineering, and concrete is most widely used construction material, main component packet
Cement, admixture and aggregate are included, adds water stirring after-hardening to form, has many advantages, such as simple for process, fire protecting performance.But concrete has
Fracture width is difficult to control after having the shortcomings that low tensile strength, poor toughness and cracking, therefore, in traditional reinforced concrete structure
In, frequent occurrence due to crack leads to steel bar corrosion and occurs engineering accident.Concrete structure crack directly affects structure
Durability and engineering service life, eventually lead to concrete structure and prematurely deteriorate or even completely lose using function.For
These disadvantages of concrete, carbon fiber reinforced concrete and steel fiber reinforced concrete etc. are overcome to come into being, the fibers content of this kind of concrete
Usually less than 2%, mitigation concrete bracing is played to a certain extent although doing so, and improves the works such as material bending resistance toughness
With, but strain softening destruction still occurs under uniaxial direct tensile load action, crack immediately enters the localized spreading stage after cracking.
Based on this, it is necessary to a kind of high-strength and high-ductility cement-based material and preparation method thereof is provided, to solve the prior art
The problem of.
Invention content
In view of the above-mentioned analysis to the prior art, a kind of high-strength and high-ductility cement-based material of present invention offer and its preparation side
Method, cement-based material, which is made, has preferable flexibility, crack resistance and crooked deformability, and it is strong to solve conventional concrete tension
Spend the shortcomings of fracture width is difficult to control after low, poor toughness and cracking.
In order to achieve the above object, the present invention is achieved through the following technical solutions：
A kind of high-strength and high-ductility cement-based material, is made of the raw material of following parts by weight：10-20 parts of polymer emulsion, cement
70-80 parts, 5-10 parts of carbon fiber, 2-8 parts of phenolic resin, 1-5 parts of ethylene carbonate, 0.3-1.2 parts of coupling agent, dispersant 0.2-
0.6 part and 20-30 parts of water.
Preferably, including the raw material of following parts by weight forms：15 parts of polymer emulsion, 75 parts of cement, carbon fiber 7.5
Part, 5 parts of phenolic resin, 3 parts of ethylene carbonate, 0.7 part of coupling agent, 0.4 part of dispersant and 25 parts of water.
Preferably, the polymer emulsion is styrene-butadiene emulsion, polyacrylate dispersion or polyester resin emulsion.
Preferably, the coupling agent is aluminum-zirconium coupling agent.
Preferably, the dispersant is copper stearate.
The present invention also provides the preparation methods of above-mentioned high-strength and high-ductility cement-based material, include the following steps：
（1）Gypsum is subjected to ball milling, and crosses 100 mesh square hole screens；
（2）By step（1）The cement plus water of sieving stirs 3-5min, adds phenolic resin, ethylene carbonate, coupling agent and stir
10-20min is mixed, mixed slurry is obtained；
（3）Above-mentioned mixed slurry is heated to 70-80 DEG C and keeps the temperature 20-30min, be then cooled to after room temperature be added carbon fiber and
Dispersant, continue stirring until fiber dispersity it is good, without conglomeration, obtain fibrous mixture slurry；
（4）By step（3）Gained mixture slurry pours into mold, hot-forming；
（5）Mixture slurry block after compression moulding is conserved into 5-10h；
（6）It is placed in polymer emulsion again, impregnates 40-80min；
（7）Then it conserves in a natural environment to age, then at 50-60 DEG C, drying to constant weight to get high-strength and high-ductility by block
Cement-based material.
Preferably, step（4）In, hot-forming condition is：Hot pressing pressure 5-10MPa, 120-160 DEG C of hot pressing temperature, heat
Molded time 3-5min.
Preferably, step（7）In, curing condition is：It is placed in 25-35 DEG C, conserves 28d under the environment of 90% or more humidity.
Compared with prior art, the present invention having following advantageous effect：
（1）The present invention increases that concrete substrate is flexible and concrete by the compound incorporation of polymer emulsion, carbon fiber
The adhesion strength of steel fibre and concrete after cracking, to achieve the purpose that enhance toughness of concrete, wherein polymer emulsion is done
Enough improve cement matrix itself toughness, and polymer is dehydrated in concrete and hardens into three-dimensional continuous film structure, interweaves
It is interspersed in concrete so that concrete shows high-tension, good plasticity, high impact flexibility, and polymer breast
Liquid energy is largely assembled in slurry and steel fibre interface, improves paste structure at this, and carbon fiber is bonded closely with cement, improved
The flexural strength and cracking resistance of the material.
（2）Cement-based material of the present invention is compared compared with cement-based material, has higher compactness, excellent
Toughness and preferable water resistance.Phenolic resin and cement are all preferable fire proofing materials simultaneously, beneficial to fire safety.
（3）The present invention improves the toughness and blocking effect of material, and the carbon fiber is uniformly distributed by dispersant, and
And mechanical property is changed, significantly improve the ability of the resistance to deformation of material, the probability of the generation cracking and fracture of concrete
It reduces.
（4）The preparation method of the high-strength and high-ductility cement-based material of the present invention is simple, it is easy to accomplish, it is easy to implement, it can be wide
General wall, roofing, terrace and road, bridge, tunnel, slope reinforcement for industry and civil buildings.
Specific implementation mode
Form by the following examples is described in further detail the above of the present invention again, but should not be by this
The range for being interpreted as the above-mentioned theme of the present invention is only limitted to following embodiment, all based on the technology realized belonging to the above of the present invention
It all belongs to the scope of the present invention.
Embodiment 1
A kind of high-strength and high-ductility cement-based material, is made of the raw material of following parts by weight：10 parts of polymer emulsion, cement 70
Part, 5 parts of carbon fiber, 2 parts of phenolic resin, 1 part of ethylene carbonate, 0.3 part of coupling agent, 0.2 part of dispersant and 20 parts of water.
Wherein, the polymer emulsion is styrene-butadiene emulsion.
Wherein, the coupling agent is aluminum-zirconium coupling agent.
Wherein, the dispersant is copper stearate.
The present invention also provides the preparation methods of above-mentioned high-strength and high-ductility cement-based material, include the following steps：
（1）Gypsum is subjected to ball milling, and crosses 100 mesh square hole screens；
（2）By step（1）The cement plus water of sieving stirs 3min, adds phenolic resin, ethylene carbonate, coupling agent stirring
10min obtains mixed slurry；
（3）Above-mentioned mixed slurry is heated to 70 DEG C and keeps the temperature 20min, carbon fiber and dispersion is added after being then cooled to room temperature
Agent, continue stirring until fiber dispersity it is good, without conglomeration, obtain fibrous mixture slurry；
（4）By step（3）Gained mixture slurry pours into mold, hot-forming；
（5）Mixture slurry block after compression moulding is conserved into 5h；
（6）It is placed in polymer emulsion again, impregnates 40min；
（7）Then it conserves in a natural environment to age, then at 50 DEG C, drying to constant weight to get high-strength and high-ductility cement by block
Sill.
Wherein, step（4）In, hot-forming condition is：Hot pressing pressure 5MPa, 120 DEG C of hot pressing temperature, hot-forming time
3min。
Wherein, step（7）In, curing condition is：It is placed in 25 DEG C, conserves 28d under the environment of 90% or more humidity.
Embodiment 2
A kind of high-strength and high-ductility cement-based material, is made of the raw material of following parts by weight：20 parts of polymer emulsion, cement 80
Part, 10 parts of carbon fiber, 8 parts of phenolic resin, 5 parts of ethylene carbonate, 1.2 parts of coupling agent, 0.6 part of dispersant and 30 parts of water.
Wherein, the polymer emulsion is polyacrylate dispersion.
Wherein, the coupling agent is aluminum-zirconium coupling agent.
Wherein, the dispersant is copper stearate.
The present invention also provides the preparation methods of above-mentioned high-strength and high-ductility cement-based material, include the following steps：
（1）Gypsum is subjected to ball milling, and crosses 100 mesh square hole screens；
（2）By step（1）The cement plus water of sieving stirs 5min, adds phenolic resin, ethylene carbonate, coupling agent stirring
20min obtains mixed slurry；
（3）Above-mentioned mixed slurry is heated to 80 DEG C and keeps the temperature 30min, carbon fiber and dispersion is added after being then cooled to room temperature
Agent, continue stirring until fiber dispersity it is good, without conglomeration, obtain fibrous mixture slurry；
（4）By step（3）Gained mixture slurry pours into mold, hot-forming；
（5）Mixture slurry block after compression moulding is conserved into 10h；
（6）It is placed in polymer emulsion again, impregnates 80min；
（7）Then it conserves in a natural environment to age, then at 60 DEG C, drying to constant weight to get high-strength and high-ductility cement by block
Sill.
Wherein, step（4）In, hot-forming condition is：Hot pressing pressure 10MPa, 160 DEG C of hot pressing temperature, when hot-forming
Between 5min.
Wherein, step（7）In, curing condition is：It is placed in 35 DEG C, conserves 28d under the environment of 90% or more humidity.
Embodiment 3
A kind of high-strength and high-ductility cement-based material, by the raw material of following parts by weight form 15 parts of polymer emulsion, 75 parts of cement,
25 parts of 7.5 parts of carbon fiber, 5 parts of phenolic resin, 3 parts of ethylene carbonate, 0.7 part of coupling agent, 0.4 part of dispersant and water.
Wherein, the polymer emulsion is polyester resin emulsion.
Wherein, the coupling agent is aluminum-zirconium coupling agent.
Wherein, the dispersant is copper stearate.
The present invention also provides the preparation methods of above-mentioned high-strength and high-ductility cement-based material, include the following steps：
（1）Gypsum is subjected to ball milling, and crosses 100 mesh square hole screens；
（2）By step（1）The cement plus water of sieving stirs 4min, adds phenolic resin, ethylene carbonate, coupling agent stirring
15min obtains mixed slurry；
（3）Above-mentioned mixed slurry is heated to 75 DEG C and keeps the temperature 25min, carbon fiber and dispersion is added after being then cooled to room temperature
Agent, continue stirring until fiber dispersity it is good, without conglomeration, obtain fibrous mixture slurry；
（4）By step（3）Gained mixture slurry pours into mold, hot-forming；
（5）Mixture slurry block after compression moulding is conserved into 7.5h；
（6）It is placed in polymer emulsion again, impregnates 60min；
（7）Then it conserves in a natural environment to age, then at 55 DEG C, drying to constant weight to get high-strength and high-ductility cement by block
Sill.
Wherein, step（4）In, hot-forming condition is：Hot pressing pressure 7.5MPa, 140 DEG C of hot pressing temperature, when hot-forming
Between 4min.
Wherein, step（7）In, curing condition is：It is placed in 30 DEG C, conserves 28d under the environment of 90% or more humidity.
Embodiment 4
A kind of high-strength and high-ductility cement-based material, is made of the raw material of following parts by weight：20 parts of polymer emulsion, cement 70
Part, 10 parts of carbon fiber, 5 parts of phenolic resin, 1 part of ethylene carbonate, 0.5 part of coupling agent, 0.2 part of dispersant and 20 parts of water.
Wherein, the polymer emulsion is styrene-butadiene emulsion, polyacrylate dispersion or polyester resin emulsion.
Wherein, the coupling agent is aluminum-zirconium coupling agent.
Wherein, the dispersant is copper stearate.
The present invention also provides the preparation methods of above-mentioned high-strength and high-ductility cement-based material, include the following steps：
（1）Gypsum is subjected to ball milling, and crosses 100 mesh square hole screens；
（2）By step（1）The cement plus water of sieving stirs 5min, adds phenolic resin, ethylene carbonate, coupling agent stirring
10min obtains mixed slurry；
（3）Above-mentioned mixed slurry is heated to 80 DEG C and keeps the temperature 20min, carbon fiber and dispersion is added after being then cooled to room temperature
Agent, continue stirring until fiber dispersity it is good, without conglomeration, obtain fibrous mixture slurry；
（4）By step（3）Gained mixture slurry pours into mold, hot-forming；
（5）Mixture slurry block after compression moulding is conserved into 5h；
（6）It is placed in polymer emulsion again, impregnates 80min；
（7）Then it conserves in a natural environment to age, then at 50 DEG C, drying to constant weight to get high-strength and high-ductility cement by block
Sill.
Wherein, step（4）In, hot-forming condition is：Hot pressing pressure 5MPa, 160 DEG C of hot pressing temperature, hot-forming time
3-5min。
Wherein, step（7）In, curing condition is：It is placed in 25 DEG C, conserves 28d under the environment of 90% or more humidity.
Embodiment 5
A kind of high-strength and high-ductility cement-based material, is made of the raw material of following parts by weight：10 parts of polymer emulsion, cement 80
Part, 5 parts of carbon fiber, 4 parts of phenolic resin, 1 part of ethylene carbonate, 0.3 part of coupling agent, 0.6 part of dispersant and 20 parts of water.
Wherein, the polymer emulsion is styrene-butadiene emulsion.
Wherein, the coupling agent is aluminum-zirconium coupling agent.
Wherein, the dispersant is copper stearate.
The present invention also provides the preparation methods of above-mentioned high-strength and high-ductility cement-based material, include the following steps：
（1）Gypsum is subjected to ball milling, and crosses 100 mesh square hole screens；
（2）By step（1）The cement plus water of sieving stirs 3.5min, adds phenolic resin, ethylene carbonate, coupling agent and stir
12min is mixed, mixed slurry is obtained；
（3）Above-mentioned mixed slurry is heated to 78 DEG C and keeps the temperature 30min, carbon fiber and dispersion is added after being then cooled to room temperature
Agent, continue stirring until fiber dispersity it is good, without conglomeration, obtain fibrous mixture slurry；
（4）By step（3）Gained mixture slurry pours into mold, hot-forming；
（5）Mixture slurry block after compression moulding is conserved into 8h；
（6）It is placed in polymer emulsion again, impregnates 50min；
（7）Then it conserves in a natural environment to age, then at 60 DEG C, drying to constant weight to get high-strength and high-ductility cement by block
Sill.
Wherein, step（4）In, hot-forming condition is：Hot pressing pressure 10MPa, 120 DEG C of hot pressing temperature, when hot-forming
Between 5min.
Wherein, step（7）In, curing condition is：It is placed in 35 DEG C, conserves 28d under the environment of 90% or more humidity.
Comparative example 1
This comparative example 1 eliminates polymer emulsion, other same as Example 3.
Comparative example 2
This comparative example 2 has changed carbon fiber into vinal, other same as Example 3.
Experimental example 1
By high-strength and high-ductility water made from high-strength and high-ductility cement-based material made from embodiment 1-5 and comparative example 1, comparative example 2
The mechanical property of cement-based material is tested, and the results are shown in Table 1.
Table 1
| Sample | Compression strength（MPa） | Flexural strength（Mpa） | Bending toughness index I20 |
| Embodiment 1 | 55.8 | 18.2 | 21.9 |
| Embodiment 2 | 57.5 | 22.4 | 21.2 |
| Embodiment 3 | 59.8 | 27.5 | 19.4 |
| Embodiment 4 | 56.7 | 25.3 | 20.7 |
| Embodiment 5 | 56.3 | 22.6 | 21.4 |
| Comparative example 1 | 45.2 | 12.8 | 22.5 |
| Comparative example 2 | 43.6 | 10.1 | 24.8 |
1 explanation of table：Compared with comparative example 1, comparative example 2, high-strength and high-ductility cement-based material prepared by the present invention is with good
Mechanical property illustrates that polymer emulsion and steel fibre have facilitation to the mechanical property of reinforcing material.
Experimental example 2
By high-strength and high-ductility water made from high-strength and high-ductility cement-based material made from embodiment 1-5 and comparative example 1, comparative example 2
The water resistance of cement-based material is tested, and the results are shown in Table 2
Table 2
| Sample | 2h water absorption rates（%） | Water absorption rate for 24 hours（%） |
| Embodiment 1 | 1.5 | 2.4 |
| Embodiment 2 | 0.9 | 1.4 |
| Embodiment 3 | 0.5 | 0.9 |
| Embodiment 4 | 1.1 | 2.2 |
| Embodiment 5 | 0.7 | 1.2 |
| Comparative example 1 | 2.5 | 4.1 |
| Comparative example 2 | 3.3 | 3.7 |
2 explanation of table：Compared with comparative example 1, comparison 2, high-strength and high-ductility cement-based material prepared by the present invention is with good water-fast
Property.
It is merely a preferred embodiment of the present invention, is not intended to restrict the invention, although with reference to aforementioned implementation described in upper
Invention is explained in detail for example, for those skilled in the art, still can be to foregoing embodiments
Recorded technical solution is modified or equivalent replacement of some of the technical features.All spirit in the present invention
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of high-strength and high-ductility cement-based material, which is characterized in that be made of the raw material of following parts by weight：Polymer emulsion
10-20 parts, 70-80 parts of cement, 5-10 parts of carbon fiber, 2-8 parts of phenolic resin, 1-5 parts of ethylene carbonate, coupling agent 0.3-1.2
20-30 parts of part, 0.2-0.6 parts of dispersant and water.
2. high-strength and high-ductility cement-based material according to claim 1, which is characterized in that include the original of following parts by weight
Material composition：15 parts of polymer emulsion, 75 parts of cement, 7.5 parts of carbon fiber, 5 parts of phenolic resin, 3 parts of ethylene carbonate, coupling agent
25 parts of 0.7 part, 0.4 part of dispersant and water.
3. high-strength and high-ductility cement-based material according to claim 1, which is characterized in that the polymer emulsion is butylbenzene
Lotion, polyacrylate dispersion or polyester resin emulsion.
4. high-strength and high-ductility cement-based material according to claim 1, which is characterized in that the coupling agent is coupled for aluminium zirconium
Agent.
5. high-strength and high-ductility cement-based material according to claim 1, which is characterized in that the dispersant is stearic acid
Copper.
6. a kind of preparation method according to claim 1-5 any one of them high-strength and high-ductility cement-based materials, feature exists
In including the following steps：
（1）Gypsum is subjected to ball milling, and crosses 100 mesh square hole screens；
（2）By step（1）The cement plus water of sieving stirs 3-5min, adds phenolic resin, ethylene carbonate, coupling agent and stir
10-20min is mixed, mixed slurry is obtained；
（3）Above-mentioned mixed slurry is heated to 70-80 DEG C and keeps the temperature 20-30min, be then cooled to after room temperature be added carbon fiber and
Dispersant, continue stirring until fiber dispersity it is good, without conglomeration, obtain fibrous mixture slurry；
（4）By step（3）Gained mixture slurry pours into mold, hot-forming；
（5）Mixture slurry block after compression moulding is conserved into 5-10h；
（6）It is placed in polymer emulsion again, impregnates 40-80min；
（7）Then it conserves in a natural environment to age, then at 50-60 DEG C, drying to constant weight to get high-strength and high-ductility by block
Cement-based material.
7. the preparation method of high-strength and high-ductility cement-based material according to claim 6, which is characterized in that step（4）In,
Hot-forming condition is：Hot pressing pressure 5-10MPa, 120-160 DEG C of hot pressing temperature, hot-forming time 3-5min.
8. the preparation method of high-strength and high-ductility cement-based material according to claim 6, which is characterized in that step（7）In,
Curing condition is：It is placed in 25-35 DEG C, conserves 28d under the environment of 90% or more humidity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810388400.2A CN108455951A (en) | 2018-04-26 | 2018-04-26 | A kind of high-strength and high-ductility cement-based material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810388400.2A CN108455951A (en) | 2018-04-26 | 2018-04-26 | A kind of high-strength and high-ductility cement-based material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN108455951A true CN108455951A (en) | 2018-08-28 |
Family
ID=63236352
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| Country | Link |
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2018
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