CN115536299A - Organic-inorganic composite toughening material and application thereof in concrete - Google Patents
Organic-inorganic composite toughening material and application thereof in concrete Download PDFInfo
- Publication number
- CN115536299A CN115536299A CN202211293207.3A CN202211293207A CN115536299A CN 115536299 A CN115536299 A CN 115536299A CN 202211293207 A CN202211293207 A CN 202211293207A CN 115536299 A CN115536299 A CN 115536299A
- Authority
- CN
- China
- Prior art keywords
- concrete
- organic
- initiator
- inorganic composite
- toughening material
- 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.)
- Pending
Links
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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F120/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F120/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F120/04—Acids; Metal salts or ammonium salts thereof
- C08F120/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
-
- 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)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Polymerisation Methods In General (AREA)
Abstract
The invention provides an organic-inorganic composite toughening material and application thereof in concrete. The organic-inorganic composite toughening material comprises a polymerized monomer, a cross-linking agent, an initiator and a micro-interface reinforcer, wherein the polymerized monomer is selected from more than one of acrylamide, acrylate and methacrylate; the micro interface reinforcer is selected from more than one of nano wollastonite, calcium carbonate whisker and calcium sulfate whisker; when the organic-inorganic composite toughening material is applied to concrete, the polymerization monomer is polymerized in situ in the cement concrete under the action of an initiator and a crosslinking agent to form a high molecular polymer, wherein the polymerization monomer accounts for 1-5% of the mass of the cement. The concrete prepared by the composite toughening material of the invention does not influence or reduce the compressive strength while improving the bending stress and the fracture energy, and solves the problems of low flexural strength, poor toughness and the like of the existing concrete material.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to an organic-inorganic composite toughening material and application thereof in concrete.
Background
As a civil engineering material with the widest application and the largest dosage, the concrete has poor toughness, small ductility, easy cracking and large drying shrinkage, thereby seriously affecting the overall safety and service life of buildings.
The concrete toughening comprises fiber toughening and matrix toughening, wherein the fiber toughening is high in cost and poor in practical application effect, and the matrix toughening is mainly realized by adding a polymer and a nano modified material. Polymer concrete has higher toughness and flexural strength, but the addition of polymer often results in a significant reduction in compressive strength. The introduction of inorganic nano materials into concrete can improve the microstructure of a matrix and an interface transition region, reduce the porosity and reduce the generation of cracks, but the actual toughening effect is not obvious.
Therefore, the invention has important significance in the premise of ensuring the compressive strength of concrete.
Patent CN111517703A "high fracture-resistant cement-based material and preparation method thereof" discloses a high fracture-resistant cement-based material. The invention leads the polymerization monomer to form polymer in the cement hydration process through the initiator and the accelerator, and the polymer and the cement hydrate generate chemical bonding, thus leading the flexural strength of the cement paste to be improved by 64 to 220 percent in 28 days and the compressive strength to be reduced by 1 to 32 percent. However, the 28-day flexural strength of the cement mortar prepared in the scheme is improved by 46% at most, the corresponding compressive strength is reduced by 37%, and the method is not researched for a more complex concrete system, and the action effect is not clear.
CN109250963B "a composite toughened concrete and a preparation method thereof", discloses a composite toughened concrete. The invention takes boron nitride with excellent reinforcing and toughening properties as a base material as a concrete addition material, endows the concrete with good micro interface bonding, toughness and fatigue resistance, and the prepared concrete has 28-day compressive strength of 30 60MPa. However, the use of boron nitride not only increases the production cost of concrete, but also has poor operability of practical engineering, thereby limiting the popularization and application of the boron nitride in practical engineering.
Disclosure of Invention
Aiming at the problems that the toughening effect of the existing concrete admixture is limited and the compressive strength is obviously influenced, the invention provides an organic-inorganic composite toughening material and application thereof in concrete.
The invention provides an organic-inorganic composite toughening material, which comprises a polymerized monomer, a cross-linking agent, an initiator and a micro-interface enhancer;
wherein the initiator accounts for 2-7% of the mass of the polymerized monomer, the cross-linking agent accounts for 0.05-0.15% of the mass of the polymerized monomer, and the micro-interface enhancer accounts for 20-100% of the mass of the polymerized monomer;
the polymerization monomer is selected from more than one of acrylamide, acrylate and methacrylate;
the micro interface reinforcer is selected from more than one of nano wollastonite, calcium carbonate whisker and calcium sulfate whisker.
The initiator is inorganic peroxide, and is specifically selected from more than one of ammonium persulfate, potassium persulfate and sodium persulfate.
The cross-linking agent is selected from more than one of N, N' -methylene bisacrylamide, 2,5-dimethyl-2,5 di-tert-butyl hexane peroxide, divinylbenzene and diisocyanate.
The invention provides the application of the organic-inorganic composite toughening material in concrete, which can be applied to concrete with various strength grades and used for ensuring the toughening effect of the concrete without influencing the compressive strength, wherein a polymerization monomer in the organic-inorganic composite toughening material is polymerized in situ in the cement concrete under the action of an initiator and a crosslinking agent to form a high molecular polymer, wherein the polymerization monomer accounts for 1-5% of the mass of the cement.
The concrete of the invention is preferably C30 concrete.
The invention also provides a preparation method of concrete containing the organic-inorganic composite toughening material, which comprises the following steps:
(1) Adding water into a polymerization monomer and a crosslinking agent, mixing and stirring until the polymerization monomer and the crosslinking agent are completely dissolved to obtain a solution I, independently adding water into an initiator, stirring until the initiator is completely dissolved to obtain a solution II, and independently adding water into a micro-interface enhancer, and stirring to obtain a suspension III;
(2) Pouring cement, fine aggregate and coarse aggregate into a concrete mixer to be mixed for 5-10 minutes to obtain a mixture;
(3) And (3) adding water, the three solutions obtained in the step (1) and the concrete admixture into the mixture obtained in the step (2), and stirring for 3-9 minutes to obtain the concrete.
The cement in the concrete is mixed with more than one of Portland cement, ordinary Portland cement and white Portland cement with the excellent strength grade of 32.5 or more;
the fine aggregate in the concrete is preferably continuous graded sand with the grain diameter of 0.075-4.75 mm, and is selected from more than one of quartz sand, river sand, garnet sand and high-strength mechanism sand;
the coarse aggregate in the concrete is preferably any one of granite, diabase, basalt and limestone, and the particle size of the particles is 4.75-9.5 mm;
the concrete admixture in the concrete is preferably mixed with more than one of a polycarboxylic acid water reducing agent, an organic silicon defoaming agent and a polyether defoaming agent.
Compared with the prior art, the invention has the beneficial effects that:
(1) The toughness of the concrete is effectively improved through the combined action of the in-situ polymerization of the polymer monomer under the initiator and the cross-linking agent and the micro-interface reinforcer;
(2) By adopting the organic-inorganic composite toughening material, a polymer network structure formed by in-situ polymerization of a polymerization monomer in cement concrete under the action of an initiator and a cross-linking agent is bonded with each component of the concrete, so that the bending stress of the concrete is obviously improved, and the generation of cracks is reduced; the micro-interface reinforcer can optimize the interface transition area between the matrix and the aggregate, and the crack deflection phenomenon occurs, so that the 28-day compressive strength is basically not lost;
(3) The concrete prepared by the composite toughening material of the invention does not influence or reduce the compressive strength while improving the bending stress and the fracture energy, and solves the problems of low flexural strength, poor toughness and the like of the existing concrete material;
(4) The bending stress of the C30 concrete prepared by the technology can be improved by about 40 percent, and the breaking energy can be improved by about 103 percent.
Detailed Description
To more fully explain the practice of the present invention, examples of the preparation of concrete from an organic-inorganic composite toughening material are provided. These examples are merely illustrative and do not limit the scope of the invention.
Example 1
An organic-inorganic composite toughening material comprises a polymerized monomer, a cross-linking agent, an initiator and a micro-interface enhancer;
the polymerization monomer is acrylamide;
the micro interface reinforcer is nano wollastonite;
the initiator is ammonium persulfate;
the cross-linking agent is N, N' -methylene bisacrylamide.
Example 2
An organic-inorganic composite toughening material comprises a polymerized monomer, a cross-linking agent, an initiator and a micro-interface reinforcer;
the polymerized monomer is acrylate;
the micro interface enhancer is calcium carbonate whisker;
the initiator is potassium persulfate;
the cross-linking agent is 2,5-dimethyl-2,5 di-tert-butyl hexane peroxide.
Example 3
An organic-inorganic composite toughening material comprises a polymerized monomer, a cross-linking agent, an initiator and a micro-interface enhancer;
the polymerized monomer is methacrylate;
the micro interface reinforcer is calcium sulfate whisker;
the initiator is sodium persulfate;
the cross-linking agent is prepared by mixing divinylbenzene and diisocyanate according to a mass ratio of 1:1.
Example 4
An organic-inorganic composite toughening material comprises a polymerized monomer, a cross-linking agent, an initiator and a micro-interface enhancer;
the polymerization monomer is acrylamide;
the micro interface reinforcer is nano wollastonite;
the initiator is ammonium persulfate;
the cross-linking agent is N, N' -methylene-bisacrylamide.
Application examples
The parts by weight of the components in the concrete prepared in each example and comparative example are shown in table 1.
The "cement" in each of the examples and comparative examples was P.II 52.5 portland cement.
The fine aggregate in each example and comparative example is river sand, and the grain size is 0.075-4.75 mm.
The "coarse aggregate" in each example and comparative example was limestone and the particle diameter was 4.75 to 9.5mm.
The concrete admixture in each example and comparative example is a polycarboxylic acid high-performance water reducing agent and a silicone defoaming agent, the micro-interface reinforcing agent doped in the concrete in comparative examples 2 and 3 is nano wollastonite, the polymerization monomer in comparative examples 4 to 7 is acrylamide, the initiator in comparative examples 5 to 7 is ammonium persulfate, and the crosslinking agent in comparative examples 6 and 7 is N, N' -methylene bisacrylamide.
TABLE 1 concrete component contents in examples and comparative examples
Comparative example 1 is a base concrete without any of the components of the composite toughening material being incorporated.
Comparative examples 2 and 3 incorporated a micro-interface enhancer and no polymeric monomer, initiator and cross-linking agent.
In comparative example 4, the monomers were polymerized without the addition of an initiator, a crosslinking agent, and a micro-interface enhancer.
Comparative example 5 incorporates the polymerization monomer and initiator, and no cross-linking agent and micro-interface enhancer.
Comparative example 6 incorporated a polymerized monomer, an initiator, and a cross-linking agent, and no micro-interface enhancer.
In comparative example 7, the amounts of the polymerization monomer and the initiator were increased.
In example 2, the amount of the over initiator is increased.
The amount of the micro interface enhancer was increased in example 3.
The materials of comparative example 1 and examples 1 to 4 were prepared by mixing the polymer monomer and the crosslinking agent with water, stirring the initiator with water alone, stirring the micro interface enhancer with water alone to form a suspension, mixing the cement, the fine aggregate and the coarse aggregate in a horizontal shaft or vertical shaft planetary type forced mixer for 5 minutes, adding the above three solutions, the water reducing agent and the defoaming agent to the resulting mixture, and stirring for three minutes. And (4) performing fresh mixing performance test on the mixture, pouring the mixture into a mold for 24h, folding the mold, and testing the comprehensive performance after placing the mold into a standard curing environment for curing for 3 days, 7 days and 28 days.
Using the C30 concrete of comparative example 1 and examples 1 to 4 described above, a comparative test of mechanical properties was carried out (based on comparative example 1, the mechanical properties were defined as 100%, and the mechanical properties of the remaining examples were changed according to the reference), and the test results were as follows:
TABLE 2 mechanical Properties of C30 concretes in examples
As can be seen from the test results in Table 2, when the organic-inorganic composite toughening material of the present invention is applied to concrete, the network structure formed by in-situ polymerization is bonded with each component of the concrete, and the inorganic micro-interface reinforcer can optimize the interface transition region between the matrix and the aggregate, so as to significantly improve the toughness of the concrete, thereby maintaining the compressive strength of the concrete to be substantially the same for 28 days, greatly improving the bending stress and the fracture energy of the concrete, facilitating the improvement of the toughness of the concrete, and having significant application and popularization values.
Comparative example 1 is a reference C30 concrete having a relatively low flexural stress and a relatively high compressive strength.
After the micro-interface enhancer is introduced in the comparative example 2, the compressive strength of the concrete is favorably improved; and the early fracture energy is obviously improved, but the later stage is basically equal to that of comparative example 1.
After the micro-interface enhancer is continuously introduced into the concrete in the comparative example 3, the compressive strength of the concrete is further improved; the bending stress is reduced to different degrees, but the same early fracture energy is obviously improved, and the later stage is basically equal to that of the comparative example 1.
After the polymeric monomer is introduced into the concrete in the comparative example 4, the bending stress and the compressive strength of the concrete both show a reduced trend, the fracture energy is improved in 3 days and 28 days, and the fracture energy is reduced in 7 days.
In comparative example 5, after the polymerized monomers and the initiator are introduced, the initiator enables the polymerized monomers to be subjected to in-situ polymerization in the matrix, the bending stress is improved, and the fracture energy is greatly improved; however, the compressive strength was improved as compared with that in comparative example 4, but it still tended to be lower than that in comparative example 1.
The incorporation of the polymeric monomer, initiator and cross-linking agent in comparative examples 6 and 7 similarly increased the flexural stress of the concrete, but reduced the compressive strength.
In examples 1 to 4, the toughness of the C30 concrete is effectively improved along with the combined action of the polymerization monomer, the initiator, the cross-linking agent and the micro-interface enhancer, and the maximum bending stress of 3 days and 28 days is respectively improved by 63% and 42%; the maximum breaking energy is improved by about 3.5 times and 1.2 times in 3 days and 28 days; and the 28-day compressive strength of the C30 concrete is basically equal to that of the comparative example 1.
The present invention is not limited to the above-described embodiments, which are described in the specification and illustrated only for illustrating the principle of the present invention, and there are various changes and modifications of the present invention without departing from the spirit and scope of the present invention, which fall within the scope of the claimed invention.
Claims (9)
1. An organic-inorganic composite toughening material is characterized by comprising a polymerized monomer, a cross-linking agent, an initiator and a micro-interface reinforcer;
wherein the initiator accounts for 2-7% of the mass of the polymerized monomer, the cross-linking agent accounts for 0.05-0.15% of the mass of the polymerized monomer, and the micro-interface enhancer accounts for 20-100% of the mass of the polymerized monomer;
the polymerization monomer is selected from more than one of acrylamide, acrylate and methacrylate;
the micro interface reinforcer is selected from more than one of nanometer wollastonite, calcium carbonate whisker and calcium sulfate whisker.
2. The organic-inorganic composite toughening material of claim 1, wherein the initiator is an inorganic peroxide.
3. The organic-inorganic composite toughening material of claim 2, wherein the initiator is selected from more than one of ammonium persulfate, potassium persulfate and sodium persulfate.
4. The organic-inorganic composite toughening material of claim 2, wherein the crosslinking agent is selected from more than one of N, N' -methylenebisacrylamide, 2,5-dimethyl-2,5 di-tert-butyl hexane peroxide, divinylbenzene and diisocyanate.
5. Use of an organic-inorganic composite toughening material according to any one of claims 1 to 4 in concrete.
6. The use of claim 5, wherein the organic-inorganic composite toughening material is used in concrete with various strength grades, and the polymerized monomer in the organic-inorganic composite toughening material is polymerized in situ in the cement concrete under the action of an initiator and a cross-linking agent to form a high molecular polymer, wherein the polymerized monomer accounts for 1-5% of the mass of the cement.
7. Use according to claim 6, wherein the concrete is C30 concrete.
8. The use according to claim 6 or 7, wherein the preparation method of concrete containing the organic-inorganic composite toughening material comprises the following steps:
(1) Adding water into a polymerization monomer and a crosslinking agent, mixing and stirring until the polymerization monomer and the crosslinking agent are completely dissolved to obtain a solution I, independently adding water into an initiator, stirring until the initiator is completely dissolved to obtain a solution II, and independently adding water into a micro-interface enhancer, and stirring to obtain a suspension III;
(2) Pouring cement, fine aggregate and coarse aggregate into a concrete mixer to be mixed for 5-10 minutes to obtain a mixture;
(3) And (3) adding water, the three solutions obtained in the step (1) and a concrete additive into the mixture obtained in the step (2), and stirring for 3-9 minutes to obtain the concrete.
9. The use according to claim 8, wherein the cement is selected from any one or more of Portland cement with strength grade of 32.5 and above, ordinary Portland cement and white Portland cement;
the fine aggregate is selected from continuous graded sand with the grain diameter of 0.075-4.75 mm, and is mixed with more than one of quartz sand, river sand, garnet sand and high-strength machine-made sand;
the coarse aggregate is selected from any one of granite, diabase, basalt and limestone, and the particle size of the coarse aggregate is 4.75-9.5 mm;
the concrete admixture is prepared by mixing more than one of polycarboxylic acid water reducing agent, organic silicon defoaming agent and polyether defoaming agent.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211293207.3A CN115536299A (en) | 2022-10-21 | 2022-10-21 | Organic-inorganic composite toughening material and application thereof in concrete |
| PCT/CN2023/108309 WO2024082735A1 (en) | 2022-10-21 | 2023-07-20 | Organic-inorganic composite toughening material and use thereof in concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211293207.3A CN115536299A (en) | 2022-10-21 | 2022-10-21 | Organic-inorganic composite toughening material and application thereof in concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115536299A true CN115536299A (en) | 2022-12-30 |
Family
ID=84734957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211293207.3A Pending CN115536299A (en) | 2022-10-21 | 2022-10-21 | Organic-inorganic composite toughening material and application thereof in concrete |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115536299A (en) |
| WO (1) | WO2024082735A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116477903A (en) * | 2023-04-25 | 2023-07-25 | 河北工业大学 | 3D printing tough concrete of lining support structure and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104609759A (en) * | 2014-11-25 | 2015-05-13 | 江苏苏博特新材料股份有限公司 | Additive capable of improving bending strength and tensile strength of cement base material and its preparation method |
| CN111363077A (en) * | 2020-04-09 | 2020-07-03 | 澳门大学 | Polymer cement-based material and preparation method and application thereof |
| US20210355031A1 (en) * | 2018-08-29 | 2021-11-18 | Gcp Applied Technologies Inc. | Non-hydration strength in cementitious compositions |
| CN114436597A (en) * | 2022-03-02 | 2022-05-06 | 青岛理工大学 | In-situ synergistic modified reinforced cement-based composite material and application thereof |
| CN115093182A (en) * | 2022-07-27 | 2022-09-23 | 青岛理工大学 | In-situ organic-inorganic polymerization modified cement-based composite material and preparation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4346050A (en) * | 1978-06-02 | 1982-08-24 | Plastibeton Canada Inc. | Polymer concrete having low binder levels |
| CN104177029B (en) * | 2014-08-25 | 2016-01-27 | 福建巨岸建设工程有限公司 | Inorganic materials/polymkeric substance compound high tenacity concrete and preparation method thereof |
| CN108516774B (en) * | 2018-06-27 | 2021-01-12 | 上海申继交通科技有限公司 | High-strength and high-toughness concrete and preparation method thereof |
| CN110606717B (en) * | 2019-11-01 | 2022-03-18 | 江苏苏博特新材料股份有限公司 | Concrete reinforcing additive and application thereof in ultra-high strength concrete |
-
2022
- 2022-10-21 CN CN202211293207.3A patent/CN115536299A/en active Pending
-
2023
- 2023-07-20 WO PCT/CN2023/108309 patent/WO2024082735A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104609759A (en) * | 2014-11-25 | 2015-05-13 | 江苏苏博特新材料股份有限公司 | Additive capable of improving bending strength and tensile strength of cement base material and its preparation method |
| US20210355031A1 (en) * | 2018-08-29 | 2021-11-18 | Gcp Applied Technologies Inc. | Non-hydration strength in cementitious compositions |
| CN111363077A (en) * | 2020-04-09 | 2020-07-03 | 澳门大学 | Polymer cement-based material and preparation method and application thereof |
| CN114436597A (en) * | 2022-03-02 | 2022-05-06 | 青岛理工大学 | In-situ synergistic modified reinforced cement-based composite material and application thereof |
| CN115093182A (en) * | 2022-07-27 | 2022-09-23 | 青岛理工大学 | In-situ organic-inorganic polymerization modified cement-based composite material and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116477903A (en) * | 2023-04-25 | 2023-07-25 | 河北工业大学 | 3D printing tough concrete of lining support structure and preparation method thereof |
| CN116477903B (en) * | 2023-04-25 | 2024-05-31 | 河北工业大学 | 3D printing tough concrete of lining support structure and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024082735A1 (en) | 2024-04-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110128077B (en) | Low-viscosity easy-pumping ultra-high-performance concrete and preparation method thereof | |
| CN108529968A (en) | A kind of fiber concrete material and preparation method thereof for 3D printing | |
| CN110357545B (en) | Mortar for quickly repairing local damage of concrete base layer and preparation method thereof | |
| CN107572969B (en) | Sea sand ultrahigh-performance concrete and preparation method thereof | |
| CN110606717B (en) | Concrete reinforcing additive and application thereof in ultra-high strength concrete | |
| CN111517714A (en) | Easily-pumped coarse aggregate-containing ultra-high performance concrete and preparation method thereof | |
| CN112876169B (en) | Slurry coating composition, slurry coating aggregate and preparation method thereof | |
| CN109809778A (en) | Super hardening modified PVA fiber reinforcement sea sand cement-base composite material and preparation method thereof | |
| CN107602013B (en) | Bentonite cement-based composite material and preparation method thereof | |
| CN113004005A (en) | Cement-based grouting material prepared based on machine-made sand | |
| WO2024082735A1 (en) | Organic-inorganic composite toughening material and use thereof in concrete | |
| CN111362636A (en) | C60 carbon fiber concrete and preparation method thereof | |
| CN112851266B (en) | Ultrahigh-performance concrete with high fiber dispersity and orientation degree and preparation method thereof | |
| CN109608148B (en) | Rigid-elastic nano powder synergistic reinforced and toughened grouting material and preparation method and application thereof | |
| CN114956746B (en) | 3D printed antimony tailing solid waste fast-hardening concrete | |
| CN116813271A (en) | Wear-resistant impervious cement-based material and preparation method and application thereof | |
| CN111362646A (en) | Low-elastic-modulus flexible ultrahigh-toughness mortar concrete system and preparation method thereof | |
| CN111675527B (en) | Basic magnesium sulfate fiber concrete and preparation method thereof | |
| CN115231860A (en) | Cement-based material of modified graphene and preparation method thereof | |
| CN114315197A (en) | Fiber concrete interface modifier and modification method | |
| CN113620664B (en) | Ultrahigh-performance concrete and preparation method thereof | |
| CN115368106B (en) | High-strength cement concrete and preparation method thereof | |
| CN118184210B (en) | Efficient concrete crack-resistant additive and preparation method thereof | |
| CN117361975B (en) | High-doping-amount iron tailing sand ultra-high-ductility concrete and preparation method thereof | |
| CN110372283B (en) | High-strength concrete and preparation method thereof |
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 |