CN113754392A - Quick concrete repair mortar - Google Patents
Quick concrete repair mortar Download PDFInfo
- Publication number
- CN113754392A CN113754392A CN202110787825.2A CN202110787825A CN113754392A CN 113754392 A CN113754392 A CN 113754392A CN 202110787825 A CN202110787825 A CN 202110787825A CN 113754392 A CN113754392 A CN 113754392A
- Authority
- CN
- China
- Prior art keywords
- parts
- mortar
- agent
- quartz sand
- stirring
- 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
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0081—Uses not provided for elsewhere in C04B2111/00 as catalysts or catalyst carriers
- C04B2111/00827—Photocatalysts
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2092—Resistance against biological 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building 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
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)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides concrete rapid repair mortar which comprises the following raw materials in parts by weight: 100-130 parts of mortar raw material, 10-20 parts of ultraviolet shielding antibacterial agent, 5-7 parts of graphene oxide, 2-4 parts of wood fiber, 2-4 parts of pp glass fiber, 0.2-0.5 part of cellulose ether, 8-12 parts of 701B rubber powder, 1-3 parts of defoaming agent, 2-4 parts of water reducing agent and 0.2-0.5 part of polyvinyl alcohol dispersing agent, wherein the mortar raw material comprises the following raw materials in parts by weight: 60-80 parts of cement, 80-120 parts of quartz sand and 30-50 parts of semi-hydrated gypsum. The rapid repair mortar has the ultraviolet resistance function, so that the mortar has better aging resistance, the service life of the mortar is prolonged, and the crack resistance and the impact resistance of the mortar are further improved.
Description
Technical Field
The invention relates to the technical field of mortar, in particular to quick concrete repair mortar.
Background
Concrete is the most used building structural material at present, and due to the reasons of unreasonable concrete structure design, construction defects, environmental erosion, improper maintenance and the like and the aging of the concrete, the concrete is inevitably cracked and damaged in engineering application, the cracking and damage of the concrete can seriously affect the normal use of the concrete structure, and if the concrete is not repaired, the concrete brings great potential safety hazard and economic loss. The repair mortar is a special cement-based polymer mortar for concrete structure surface defects and reinforcement construction, can be used for repairing the surfaces of industrial and civil cracked concrete buildings or repairing damaged industrial and civil buildings which cannot meet the design requirements, but the existing repair mortar is still not high in compressive strength and flexural strength, is easy to crack after being used for a long time, is greatly influenced by ultraviolet rays and has poor ageing resistance.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the concrete rapid repair mortar, and solves the problems that the repair mortar in the prior art is still not high in compressive strength and rupture strength, is easy to crack after being used for a long time, is greatly influenced by ultraviolet rays and has poor ageing resistance.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the quick concrete repair mortar comprises the following raw materials in parts by weight: 100-130 parts of mortar raw material, 10-20 parts of ultraviolet shielding antibacterial agent, 5-7 parts of graphene oxide, 2-4 parts of wood fiber, 2-4 parts of pp glass fiber, 0.2-0.5 part of cellulose ether, 8-12 parts of 701B rubber powder, 1-3 parts of defoaming agent, 2-4 parts of water reducing agent and 0.2-0.5 part of polyvinyl alcohol dispersing agent.
Preferably, the mortar raw material comprises the following raw materials in parts by weight: 60-80 parts of cement, 80-120 parts of quartz sand and 30-50 parts of semi-hydrated gypsum.
Preferably, the ultraviolet-shielding antibacterial agent comprises the following raw materials in parts by weight: 1-2 parts of silane coupling agent, 2-3 parts of nano titanium dioxide, 0.5-2 parts of phosphite ester and 1-2 parts of benzotriazole.
Preferably, the quartz sand comprises 20-40 mesh quartz sand, 40-70 mesh quartz sand and 70-140 mesh quartz sand.
Preferably, the mortar raw material is prepared by uniformly mixing cement, quartz sand and semi-hydrated gypsum.
Preferably, the ultraviolet shielding antibacterial agent is prepared by ultrasonically mixing and dispersing a silane coupling agent, silver-loaded nano titanium dioxide, phosphite and benzotriazole.
The preparation method comprises the following steps:
s1, adding a proper amount of water into the mortar raw material, the wood fiber, the pp glass fiber and the water reducing agent, mixing the materials through mechanical stirring, adding the defoaming agent, stirring and mixing for 5-10 minutes again to obtain mixed slurry;
s2, adding graphene oxide into a polyvinyl alcohol dispersing agent, stirring at a high speed, and mixing to obtain a graphene oxide dispersing solution;
s3, pouring the graphene oxide dispersion liquid prepared in the S2 into the mixed slurry prepared in the S1, and heating and stirring to prepare graphene mixed mortar;
and S4, adding the graphene mixed mortar prepared in the S3 into an ultraviolet shielding antibacterial agent, mixing and stirring for 5-10min, then adding cellulose ether and 701B rubber powder, and stirring again to obtain a finished product.
Preferably, the water reducing agent is a polycarboxylic acid high-performance water reducing agent.
(III) advantageous effects
The invention provides concrete rapid repair mortar and a preparation method thereof. The method has the following beneficial effects:
1. according to the invention, the nano titanium dioxide and the benzotriazole are added to play a role in ultraviolet resistance, the nano titanium dioxide can absorb ultraviolet rays and reflect a certain amount of ultraviolet radiation, and the silane coupling agent is added to enable the nano titanium dioxide to be mutually polymerized, so that the ultraviolet absorption capacity is further improved, and meanwhile, the nano titanium dioxide has antibacterial property, so that the anti-aging and anti-corrosion effects of the mortar are further improved.
2. According to the invention, the compression resistance and the fracture resistance of the mortar are improved by adding the graphene oxide, the wood fiber and the pp glass fiber, the graphene oxide is uniformly dispersed in the mortar by matching the polyvinyl alcohol dispersing agent with high-speed stirring, the tensile strength and the toughness of the mortar are improved by virtue of excellent performances of the graphene oxide and the pp glass fiber, meanwhile, the wood fiber and the pp glass fiber can improve the compactness of the mortar, improve the internal clearance rate and the pore structure of the mortar and uniformly distribute the wood fiber and the pp glass fiber in the mortar to form a three-dimensional grid structure, and the crack resistance and the impact resistance of the mortar are further improved.
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the embodiment of the invention provides concrete rapid repair mortar, which comprises the following raw materials in parts by weight: the mortar comprises 100 parts of mortar raw materials, 15 parts of ultraviolet shielding antibacterial agents, 6 parts of graphene oxide, 26 parts of wood fibers, 64 parts of pp glass fibers, 0.26 part of cellulose ether, 8 parts of 701B rubber powder, 1 part of defoaming agents, 4 parts of water reducing agents and 0.3 part of polyvinyl alcohol dispersing agents, wherein the cellulose ether has a delayed coagulation effect and is prevented from drying when the mortar is not spread out.
The mortar raw materials comprise the following raw materials in parts by weight: 70 parts of cement, 80 parts of quartz sand and 35 parts of semi-hydrated gypsum.
The ultraviolet shielding antibacterial agent comprises the following raw materials in parts by weight: 1 part of silane coupling agent, 3 parts of titanium dioxide, 0.5 part of phosphite ester and 1 part of benzotriazole.
The quartz sand comprises 20-40 mesh quartz sand, 40-70 mesh quartz sand and 70-140 mesh quartz sand, and the porosity of the mortar can be reduced by matching the sand materials with different thicknesses.
The mortar raw material is prepared by uniformly mixing cement, quartz sand and semi-hydrated gypsum.
The ultraviolet shielding antibacterial agent is prepared by ultrasonically mixing and dispersing a silane coupling agent, nano titanium dioxide, phosphite ester and benzotriazole.
The preparation method comprises the following steps:
s1, adding a proper amount of water into the mortar raw material, the wood fiber, the pp glass fiber and the water reducing agent, mixing the materials through mechanical stirring, adding the defoaming agent, stirring and mixing for 5-10 minutes again to obtain mixed slurry;
s2, adding graphene oxide into a polyvinyl alcohol dispersing agent, stirring at a high speed, and mixing to obtain a graphene oxide dispersing solution;
s3, pouring the graphene oxide dispersion liquid prepared in the S2 into the mixed slurry prepared in the S1, and heating and stirring to prepare graphene mixed mortar;
and S4, adding the graphene mixed mortar prepared in the S3 into an ultraviolet shielding antibacterial agent, mixing and stirring for 5-10min, then adding cellulose ether and 701B rubber powder, and stirring again to obtain a finished product.
The water reducing agent is a polycarboxylic acid high-performance water reducing agent.
Example two:
the embodiment of the invention provides concrete rapid repair mortar, which is different from the first embodiment in that: 120 parts of mortar raw material, 20 parts of ultraviolet shielding antibacterial agent, 5 parts of graphene oxide, 4 parts of wood fiber, 4 parts of pp glass fiber, 0.5 part of cellulose ether, 12 parts of 701B rubber powder, 3 parts of defoaming agent, 1 part of water reducing agent and 0.2 part of polyvinyl alcohol dispersing agent.
The mortar raw materials comprise the following raw materials in parts by weight: 80 parts of cement, 120 parts of quartz sand and 30 parts of semi-hydrated gypsum.
The ultraviolet shielding antibacterial agent comprises the following raw materials in parts by weight: 2 parts of silane coupling agent, 2 parts of silver-loaded nano titanium dioxide, 2 parts of phosphite ester and 2 parts of benzotriazole.
Example three:
the embodiment of the invention provides concrete rapid repair mortar, which is different from the first embodiment in that: 120 parts of mortar raw material, 10 parts of ultraviolet shielding antibacterial agent, 5 parts of graphene oxide, 3 parts of wood fiber, 3 parts of pp glass fiber, 0.4 part of cellulose ether, 9 parts of 701B rubber powder, 1.5 parts of defoaming agent, 3.5 parts of water reducing agent and 0.4 part of polyvinyl alcohol dispersing agent.
The rapid repair mortar samples prepared in examples 1-3 were tested as shown in the following table:
| 28d resistance to compressionstrength/Mpa | 28d flexural strength/Mpa | |
| Example one | 15.26 | 13.5 |
| Example two | 14.5 | 13.9 |
| Example three | 13.8 | 13.3 |
The rapid repair mortar prepared by comparing the first to third examples has about thirty percent higher compression resistance and folding resistance than the rapid repair mortar commonly used in the market, and the anti-aging degree exceeds about twenty-five percent.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The quick concrete repair mortar is characterized in that: the quick repair mortar comprises the following raw materials in parts by weight: 100-130 parts of mortar raw material, 10-20 parts of ultraviolet shielding antibacterial agent, 5-7 parts of graphene oxide, 2-4 parts of wood fiber, 2-4 parts of pp glass fiber, 0.2-0.5 part of cellulose ether, 8-12 parts of 701B rubber powder, 1-3 parts of defoaming agent, 2-4 parts of water reducing agent and 0.2-0.5 part of polyvinyl alcohol dispersing agent.
2. The mortar for rapid repair of concrete according to claim 1, wherein: the mortar raw materials comprise the following raw materials in parts by weight: 60-80 parts of cement, 80-120 parts of quartz sand and 30-50 parts of semi-hydrated gypsum.
3. The mortar for rapid repair of concrete according to claim 1, wherein: the ultraviolet shielding antibacterial agent comprises the following raw materials in parts by weight: 1-2 parts of silane coupling agent, 2-3 parts of nano titanium dioxide, 0.5-2 parts of phosphite ester and 1-2 parts of benzotriazole.
4. The mortar for rapid repair of concrete according to claim 1, wherein: the quartz sand comprises 20-40 mesh quartz sand, 40-70 mesh quartz sand and 70-140 mesh quartz sand.
5. The mortar for rapid repair of concrete according to claim 2, wherein: the mortar raw material is prepared by uniformly mixing cement, quartz sand and semi-hydrated gypsum.
6. The mortar for rapid repair of concrete according to claim 3, wherein: the ultraviolet shielding antibacterial agent is prepared by ultrasonically mixing and dispersing a silane coupling agent, nano titanium dioxide, phosphite ester and benzotriazole.
7. The mortar for rapid repair of concrete according to claim 1, wherein: the preparation method comprises the following steps:
s1, adding a proper amount of water into the mortar raw material, the wood fiber, the pp glass fiber and the water reducing agent, mixing the materials through mechanical stirring, adding the defoaming agent, stirring and mixing for 5-10 minutes again to obtain mixed slurry;
s2, adding graphene oxide into a polyvinyl alcohol dispersing agent, stirring at a high speed, and mixing to obtain a graphene oxide dispersing solution;
s3, pouring the graphene oxide dispersion liquid prepared in the S2 into the mixed slurry prepared in the S1, and heating and stirring to prepare graphene mixed mortar;
and S4, adding the graphene mixed mortar prepared in the S3 into an ultraviolet shielding antibacterial agent, mixing and stirring for 5-10min, then adding cellulose ether and 701B rubber powder, and stirring again to obtain a finished product.
8. The mortar for rapid repair of concrete according to claim 1, wherein: the water reducing agent is a polycarboxylic acid high-performance water reducing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110787825.2A CN113754392A (en) | 2021-07-13 | 2021-07-13 | Quick concrete repair mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110787825.2A CN113754392A (en) | 2021-07-13 | 2021-07-13 | Quick concrete repair mortar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113754392A true CN113754392A (en) | 2021-12-07 |
Family
ID=78787618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110787825.2A Pending CN113754392A (en) | 2021-07-13 | 2021-07-13 | Quick concrete repair mortar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113754392A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114195431A (en) * | 2021-12-16 | 2022-03-18 | 平潭智汇畅城科技有限公司 | Polymer mortar |
| CN114790104A (en) * | 2022-06-23 | 2022-07-26 | 佛山路桥养护有限公司 | Concrete for repairing bridge expansion joint and preparation method and use method thereof |
| CN115974469A (en) * | 2022-11-03 | 2023-04-18 | 浙江省建材集团浙西建筑产业化有限公司 | Solid sealed CO 2 Concrete prefabricated wall board and production process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108947371A (en) * | 2018-07-17 | 2018-12-07 | 广东复特新型材料科技有限公司 | A kind of polymer foil cracking resistance plastering mortar |
| CN109721275A (en) * | 2019-03-06 | 2019-05-07 | 西安同成建筑科技有限责任公司 | A kind of dedicated brightener of concrete and preparation method thereof |
| CN110357545A (en) * | 2019-08-16 | 2019-10-22 | 广西理工职业技术学院 | Concrete base layer local damage rapid-patching motar and preparation method thereof |
| KR102194464B1 (en) * | 2020-04-03 | 2020-12-24 | 양정민 | Repairing method of concrete structure |
-
2021
- 2021-07-13 CN CN202110787825.2A patent/CN113754392A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108947371A (en) * | 2018-07-17 | 2018-12-07 | 广东复特新型材料科技有限公司 | A kind of polymer foil cracking resistance plastering mortar |
| CN109721275A (en) * | 2019-03-06 | 2019-05-07 | 西安同成建筑科技有限责任公司 | A kind of dedicated brightener of concrete and preparation method thereof |
| CN110357545A (en) * | 2019-08-16 | 2019-10-22 | 广西理工职业技术学院 | Concrete base layer local damage rapid-patching motar and preparation method thereof |
| KR102194464B1 (en) * | 2020-04-03 | 2020-12-24 | 양정민 | Repairing method of concrete structure |
Non-Patent Citations (3)
| Title |
|---|
| 张秀芳等: "《建筑砂浆技术解读470问》", 31 August 2009, 中国建材工业出版社 * |
| 施利毅: "《纳米材料》", 31 January 2007, 华东理工大学出版社 * |
| 王文广: "《聚合物改性原理》", 31 March 2018, 中国轻工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114195431A (en) * | 2021-12-16 | 2022-03-18 | 平潭智汇畅城科技有限公司 | Polymer mortar |
| CN114790104A (en) * | 2022-06-23 | 2022-07-26 | 佛山路桥养护有限公司 | Concrete for repairing bridge expansion joint and preparation method and use method thereof |
| CN115974469A (en) * | 2022-11-03 | 2023-04-18 | 浙江省建材集团浙西建筑产业化有限公司 | Solid sealed CO 2 Concrete prefabricated wall board and production process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113754392A (en) | Quick concrete repair mortar | |
| CN111039624A (en) | Recycled concrete and preparation method thereof | |
| CN103145365B (en) | Concrete anti-cracking repairing agent and concrete applying the same | |
| KR100792015B1 (en) | Self leveling polymer-modified mortar composition having improved strength and durability | |
| RU2471738C1 (en) | Repair-waterproofing composition and additive in form of wollastonite complex for repair-waterproofing composition, mortar, concrete and articles based thereon | |
| CN103332909A (en) | High-ductility repair dry powder mortar and preparation method thereof | |
| CN109503067B (en) | Light aggregate concrete and preparation method thereof | |
| CN109722137B (en) | Environment-friendly water-based interfacial agent and preparation method thereof | |
| CN108328977B (en) | Concrete repairing material | |
| CN110668762A (en) | Cement-based waterborne epoxy mortar and preparation method and application thereof | |
| CN112279601B (en) | Ultrahigh-performance concrete for rapid repair and preparation method thereof | |
| CN109574566B (en) | Concrete and preparation method thereof | |
| KR101720034B1 (en) | A high early strength cement concrete composition having the self-healing for road pavement and a repairing method of road pavement using the same | |
| CN112521115A (en) | Green alkali-activated material for repairing protection and preparation method thereof | |
| KR101176823B1 (en) | Latex modified concrete composition used polyfiber and polymer powder | |
| CN111377695A (en) | Building material for 3D printing and preparation method thereof | |
| CN113387656A (en) | High-strength double-component anti-crack repair mortar and preparation method thereof | |
| CN113501685A (en) | Sulfate and chloride corrosion resistant recycled concrete and preparation method thereof | |
| CN110423054B (en) | Fracture-resistant durable cement-based composite material containing PP fibers | |
| CN111087203B (en) | High-damping concrete and preparation method thereof | |
| CN113173764A (en) | High-strength anti-cracking concrete and preparation process thereof | |
| CN112279604A (en) | Spraying repair material and spraying repair process for inspection well | |
| CN111559882A (en) | Concrete crack repairing additive and preparation and use methods thereof | |
| KR102423871B1 (en) | Crack resisting hybrid fiber-reinforced cementitious mortar composition having excellent repairing method using the same | |
| CN111039614A (en) | Anti-crack fiber 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211207 |
|
| RJ01 | Rejection of invention patent application after publication |