CN110981314A - Basalt leaking stoppage reinforcing material and preparation method thereof - Google Patents
Basalt leaking stoppage reinforcing material and preparation method thereof Download PDFInfo
- Publication number
- CN110981314A CN110981314A CN201911370065.4A CN201911370065A CN110981314A CN 110981314 A CN110981314 A CN 110981314A CN 201911370065 A CN201911370065 A CN 201911370065A CN 110981314 A CN110981314 A CN 110981314A
- Authority
- CN
- China
- Prior art keywords
- parts
- nano
- basalt
- powder
- basalt fiber
- 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
-
- 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
- C04B2111/00008—Obtaining or using nanotechnology related 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
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- 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)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a basalt leaking stoppage reinforcing material and a preparation method thereof, which relate to the technical field of grouting leaking stoppage and comprise the following components in parts by weight: 50-60 parts of superfine cement, 10-20 parts of basalt fiber, 5-10 parts of liquid hardener, 5-10 parts of nano SiO2 powder, 1-5 parts of nano calcium silicate powder, 1-3 parts of quick lime, 1-3 parts of ethyl orthosilicate and 10-20 parts of water. In the invention, the superfine cement is used as the main component of the plugging material, the basalt fiber is added into the superfine cement, the basalt fiber forms a three-dimensional reticular structure in a matrix, part of the nanometer SiO2 powder and the calcium silicate powder in the components are attached to the surface of the basalt fiber, and part of the nanometer SiO2 powder and the calcium silicate powder are dispersed in the three-dimensional reticular structure formed by the basalt fiber, so that the strength of the plugging material is enhanced, the crack resistance and the rust resistance of the plugging material are improved, and the permeability, the waterproofness of the plugging agent and the compactness and the strength of the solidified matrix are also improved.
Description
Technical Field
The invention belongs to the technical field of grouting leakage stoppage, and particularly relates to a basalt leakage stoppage reinforcing material and a preparation method thereof.
Background
The concrete structure can grow cracks in the using process, the cracks need to be repaired in order to improve the waterproofness of the concrete structure, grouting plugging is a common crack repairing mode, grouting plugging is carried out by injecting a plugging agent into the cracks through external force, and the plugging agent permeates and solidifies in the cracks to repair the cracks. In the patent 2017101228697, basalt fiber, coal ash/slag and the like are added into silicate cement to improve the strength, the erosion resistance and the like of a stone body, and the plugging material meets the requirements of pourability, controllability and permeability resistance, and cement is replaced by the coal ash and the slag to reduce the dosage of the cement. However, in the patent, the compatibility of basalt fiber and silicate cement is poor, and the solidified plugging agent is easy to generate fine cracks, so that the waterproof failure is caused.
Disclosure of Invention
The invention aims to: the basalt plugging reinforcing material solves the defects in the prior art, improves the compatibility of basalt fibers and cement, increases the crack resistance and the rust resistance of the plugging material, and also improves the permeability and the waterproofness of the plugging agent and the compactness and the strength of a solidified matrix.
In order to achieve the purpose, the invention adopts the technical scheme that: a basalt leaking stoppage reinforcing material comprises the following components in parts by weight: 50-60 parts of superfine cement, 10-20 parts of basalt fiber, 5-10 parts of liquid hardener, 5-10 parts of nano SiO2 powder, 1-5 parts of nano calcium silicate powder, 1-3 parts of quick lime, 1-3 parts of ethyl orthosilicate and 10-20 parts of water.
In the invention, the superfine cement is used as the main component of the plugging material, the basalt fiber is added into the superfine cement to increase the corrosion resistance of the plugging material, the basalt fiber forms a three-dimensional reticular structure in a matrix, the nanometer SiO2 powder and the calcium silicate powder in the components are partially attached to the surface of the basalt fiber, and the other parts of the nanometer SiO2 powder and the calcium silicate powder are dispersed in the three-dimensional reticular structure formed by the basalt fiber to enhance the strength of the plugging material, and along with the gradual solidification of the plugging material, the basalt fiber and the SiO2 and the calcium silicate dispersed in the matrix act together to reduce the shrinkage and the later secondary cracking of the plugging material, improve the compressive strength and the flexural strength of the plugging material and reduce the bleeding rate.
Further, the paint comprises the following components in parts by weight: 60 parts of superfine cement, 10 parts of basalt fiber, 5 parts of a liquid hardening agent, 10 parts of nano SiO2 powder, 5 parts of nano calcium silicate powder, 3 parts of quicklime, 3 parts of ethyl orthosilicate and 20 parts of water. The superfine cement is set to be 60 parts, the basalt fiber is 10 parts, and the proportion is 6:1, experiments prove that when the proportion of the superfine cement to the basalt fiber is 6:1, the compatibility of the basalt fiber and the superfine cement is optimal, and the basalt fiber and the superfine cement are combined with 10 parts of SiO2 and 5 parts of calcium silicate to jointly act, so that the shrinkage resistance and the cracking resistance of the plugging material are optimal.
Further, the basalt fiber has an average diameter of 10-15um and an average length of 0.1-0.5 cm. The monofilament diameter of the basalt fiber is controlled to be 10-16 mu m, and the length of the basalt fiber is controlled to be 0.1-0.5cm, so that the basalt fiber is easier to disperse uniformly in the superfine cement, and when the length of the basalt fiber is shorter, a three-dimensional reticular structure is not easy to form in a base material, only a small part of reticular structure can be formed, the connection force of the reticular structure is poorer, and further, the connection strength of the basalt fiber and the matrix superfine cement is not enough, and the matrix is easy to form fine cracks in a macroscopic view. When the length of the basalt fiber is too long (80% of the fiber length exceeds 0.5cm), the basalt fiber is easily clamped in small cracks of a wall body in the grouting process, the grouting efficiency is influenced, and the basalt fiber is concentrated at the large cracks after the plugging material injected into the cracks is solidified, while the basalt fiber in the small cracks is less in distribution, the strength at each part of the cracks is uneven, and secondary cracking is easily caused.
Further, the particle size of the nano-scale SiO2 powder is 100-300 nm; the particle size of the nano-scale calcium silicate powder is 100-300 nm. The particle size of SiO2 and calcium silicate is controlled at 100-300nm, so that the compatibility of basalt fiber and superfine cement can be effectively increased, the strength of the base material is improved, when the particle size is smaller, SiO2 and calcium silicate are easy to agglomerate in the superfine cement base material to influence the strength of the base material, and when the particle size is larger, the reinforcing effect of the particles in the base material is weakened, the bonding property with the base material is also weakened, and the base material is cracked.
The invention also discloses a preparation method of the basalt leaking stoppage reinforcing material, which comprises the following steps;
(a) pretreated basalt fiber
Soaking basalt fiber in 1-2mol/L acetic acid solution for 1.5-2h, and soaking in alcohol solution for 5-20 min;
(b) preparing a first mixed solution
Placing the basalt fiber treated in the step (a) in a container, adding a first part of nano-scale SiO2 powder and a first part of nano-scale calcium silicate powder into the container, uniformly mixing, adding ethyl orthosilicate, and adding water while stirring for mixing to prepare a first mixed solution;
(c) preparation of plugging reinforcing material
And (b) uniformly mixing the superfine cement and the quicklime, adding the first mixed solution prepared in the step (b) while stirring, adding a liquid hardening agent, a second part of nano-SiO 2 powder and a second part of nano-calcium silicate powder, and uniformly stirring to obtain the plugging reinforcing material.
In the preparation method, the surface of the basalt fiber is pretreated by an acetic acid solution, the surface of the basalt fiber is etched by utilizing the corrosivity of acetic acid, a hollow shape is formed on the surface of the basalt fiber, and then the basalt fiber is cleaned in alcohol to remove the acetic acid on the surface of the basalt fiber; then, mixing the basalt fiber subjected to surface treatment with partial SiO2 powder and calcium silicate powder to enable partial granulation machines to be loaded on the surface of the basalt fiber, wherein the depressions on the surface of the basalt fiber increase the adhesiveness of particles; adding tetraethoxysilane to coat basalt fibers; and mixing the first mixed solution with superfine cement and quicklime to disperse the basalt fibers in the superfine cement, reacting the quicklime with machine water to generate calcium hydroxide, increasing the alkalinity of the mixed solution, promoting the hydrolysis of tetraethoxysilane, further attaching SiO2 on the surface of the basalt fibers after hydrolysis, and improving the connectivity of the basalt fibers and the superfine cement.
Further, the weight part ratio of the first part of nano-scale SiO2 powder to the second part of nano-scale SiO2 powder is 1: (1-2). The nano-scale SiO2 powder is divided into two parts, the first part is mainly used for mixing with basalt fibers, the second part is used for dispersing in superfine cement, and the ratio of the first part to the second part is controlled to be 1: (1-2), the amount of the first part is not more than that of the second part, so as to ensure that enough nano-scale SiO2 is dispersed in the superfine cement.
The weight part ratio of the first part of nano-scale calcium silicate powder to the second part of nano-scale calcium silicate powder is (1-2): 1. likewise, the first portion of calcium silicate is present in an amount greater than the second portion to ensure that the basalt fibers are loaded with a greater amount of calcium silicate particles.
The invention has the beneficial effects that:
in the invention, the superfine cement is used as the main component of the plugging material, the basalt fiber is added into the superfine cement to increase the corrosion resistance of the plugging material, the basalt fiber forms a three-dimensional reticular structure in a matrix, the nanometer SiO2 powder and the calcium silicate powder in the components are partially attached to the surface of the basalt fiber, and the other parts of the nanometer SiO2 powder and the calcium silicate powder are dispersed in the three-dimensional reticular structure formed by the basalt fiber to enhance the strength of the plugging material, and along with the gradual solidification of the plugging material, the basalt fiber and the SiO2 and the calcium silicate which are dispersed in the matrix act together to reduce the shrinkage and the later secondary cracking of the plugging material, increase the cracking resistance and the corrosion resistance of the plugging material, and also improve the permeability, the waterproofness and the compactness and the strength of the solidified matrix of the plugging agent.
Detailed Description
Preparing the plugging material of the corresponding embodiment according to the content of each component in the table 1;
TABLE 1 Components and contents of plugging materials of examples 1-8 and comparative examples 1-4
Preparation of lost circulation materials for examples 1-4: according to the formula of the examples 1-4 in the table 1, the corresponding raw materials are weighed, and the plugging material is prepared according to the following steps:
(a) pretreated basalt fiber
Soaking basalt fiber in 2mol/L acetic acid solution for 1.5h, and soaking in alcohol solution for 5 min;
(b) preparing a first mixed solution
Placing the basalt fiber treated in the step (a) in a container, adding a first part of nano-scale SiO2 powder and a first part of nano-scale calcium silicate powder into the container, uniformly mixing, adding ethyl orthosilicate, and adding water while stirring for mixing to prepare a first mixed solution;
(c) preparation of plugging reinforcing material
And (b) uniformly mixing the superfine cement and the quicklime, adding the first mixed solution prepared in the step (b) while stirring, adding a liquid hardening agent, a second part of nano-SiO 2 powder and a second part of nano-calcium silicate powder, and uniformly stirring to obtain the plugging reinforcing material.
In examples 1-4, the weight part ratio of the first part of nanoscale SiO2 powder to the second part of nanoscale SiO2 powder was 1: 1, the weight part ratio of the first part of nano-scale calcium silicate powder to the second part of nano-scale calcium silicate powder is 1: 1. in examples 1 to 4, the basalt fiber had an average diameter of 13um and an average length of 0.5 cm; the average particle size of the nano-scale SiO2 powder is 200nm, and the average particle size of the nano-scale calcium silicate powder is 200 nm.
The plugging materials of examples 5 to 8 were prepared by weighing the corresponding raw materials according to the formulations of examples 5 to 8 in table 1, and formulating the plugging materials according to the following steps:
(a) pretreated basalt fiber
Soaking basalt fiber in 1mol/L acetic acid solution for 2h, and soaking in alcohol solution for 20 min;
(b) preparing a first mixed solution
Placing the basalt fiber treated in the step (a) in a container, adding a first part of nano-scale SiO2 powder and a first part of nano-scale calcium silicate powder into the container, uniformly mixing, adding ethyl orthosilicate, and adding water while stirring for mixing to prepare a first mixed solution;
(c) preparation of plugging reinforcing material
And (b) uniformly mixing the superfine cement and the quicklime, adding the first mixed solution prepared in the step (b) while stirring, adding a liquid hardening agent, a second part of nano-SiO 2 powder and a second part of nano-calcium silicate powder, and uniformly stirring to obtain the plugging reinforcing material.
In examples 5-8, the weight part ratio of the first part of nanoscale SiO2 powder to the second part of nanoscale SiO2 powder was 1: 2. the weight part ratio of the first part of nano-scale calcium silicate powder to the second part of nano-scale calcium silicate powder is 2: 1. in examples 5 to 8, the basalt fiber had an average diameter of 10um and an average length of 0.2 cm; the average particle size of the nano-sized SiO2 powder was 100nm, and the average particle size of the nano-sized calcium silicate powder was 100 nm.
The plugging materials of comparative examples 1 to 4 were prepared according to the preparation methods of examples 1 to 4.
Experimental example:
the plugging materials prepared in examples 1 to 8 and comparative examples 1 to 4 were cast into a sheet having a thickness of 1.5cm, and the sheet was tested for compressive strength and flexural strength; shrinkage rate of the plugging material during solidification; the results are shown in table 2:
TABLE 2 Properties of plugging materials of examples 1 to 8 and comparative examples 1 to 4
In table 2, the compressive strength refers to the compressive strength of the plugging material after 28 days of solidification, and the flexural strength also refers to the flexural strength of the plugging material after 28 days of solidification. The pressurized bleeding rate refers to the bleeding rate at 0.22 MPa. As can be seen from Table 2, the plugging materials of examples 1-8 had excellent compressive strength and flexural strength and a smaller pressure bleeding rate, and when the nano SiO2 powder, the nano calcium silicate powder, the quick lime, and the ethyl orthosilicate were absent in the plugging materials, the compressive strength and the flexural strength of the plugging materials were reduced and could not reach the relevant specifications, as compared to comparative examples 1-4.
Claims (7)
1. The basalt leaking stoppage reinforcing material is characterized by comprising the following components in parts by weight:
50-60 parts of superfine cement, 10-20 parts of basalt fiber, 5-10 parts of liquid hardener, 5-10 parts of nano SiO2 powder, 1-5 parts of nano calcium silicate powder, 1-3 parts of quick lime, 1-3 parts of ethyl orthosilicate and 30-50 parts of water.
2. The basalt leakage stoppage reinforcing material according to claim 1, wherein; the paint comprises the following components in parts by weight:
60 parts of superfine cement, 10 parts of basalt fiber, 5 parts of a liquid hardening agent, 10 parts of nano SiO2 powder, 5 parts of nano calcium silicate powder, 3 parts of quicklime, 3 parts of ethyl orthosilicate and 50 parts of water.
3. The basalt leakage stoppage reinforcing material according to claim 1, wherein: the basalt fiber has an average diameter of 10-15um and an average length of 0.1-0.5 cm.
4. The basalt leakage stoppage reinforcing material according to claim 1, wherein: the particle size of the nano-scale SiO2 powder is 100-300 nm; the particle size of the nano-scale calcium silicate powder is 100-300 nm.
5. A method for preparing the basalt leakage stoppage reinforcing material according to any one of claims 1 to 4, which is characterized in that: comprises the following steps;
(a) pretreated basalt fiber
Soaking basalt fiber in 1-2mol/L acetic acid solution for 1.5-2h, and soaking in alcohol solution for 5-20 min;
(b) preparing a first mixed solution
Placing the basalt fiber treated in the step (a) in a container, adding a first part of nano-scale SiO2 powder and a first part of nano-scale calcium silicate powder into the container, uniformly mixing, adding ethyl orthosilicate, and adding water while stirring for mixing to prepare a first mixed solution;
(c) preparation of plugging reinforcing material
And (b) uniformly mixing the superfine cement and the quicklime, adding the first mixed solution prepared in the step (b) while stirring, adding a liquid hardening agent, a second part of nano-SiO 2 powder and a second part of nano-calcium silicate powder, and uniformly stirring to obtain the plugging reinforcing material.
6. The preparation method of the basalt plugging reinforcement material according to claim 5, wherein: the weight part ratio of the first part of nano-scale SiO2 powder to the second part of nano-scale SiO2 powder is 1: (1-2).
7. The preparation method of the basalt plugging reinforcement material according to claim 5, wherein: the weight part ratio of the first part of nano-scale calcium silicate powder to the second part of nano-scale calcium silicate powder is (1-2): 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911370065.4A CN110981314A (en) | 2019-12-26 | 2019-12-26 | Basalt leaking stoppage reinforcing material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911370065.4A CN110981314A (en) | 2019-12-26 | 2019-12-26 | Basalt leaking stoppage reinforcing material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110981314A true CN110981314A (en) | 2020-04-10 |
Family
ID=70077546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911370065.4A Pending CN110981314A (en) | 2019-12-26 | 2019-12-26 | Basalt leaking stoppage reinforcing material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110981314A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105585111A (en) * | 2015-12-29 | 2016-05-18 | 四川力久知识产权服务有限公司 | Basalt fiber composite as well as preparation method and application thereof |
| CN105585289A (en) * | 2015-12-21 | 2016-05-18 | 中民筑友有限公司 | Basalt-fiber reinforced cement-based material and preparation method thereof |
| CN106747229A (en) * | 2017-03-03 | 2017-05-31 | 辽宁工程技术大学 | A kind of direct plugging fiber injecting paste material and preparation method thereof |
| KR101815140B1 (en) * | 2017-06-07 | 2018-01-05 | 김경래 | Organic-inorganic hybrid mortar composition for repairing and restoring the surface of concrete structures and construction method using the same |
| CN108793877A (en) * | 2018-07-06 | 2018-11-13 | 佛山陵朝新材料有限公司 | A kind of concrete mortar |
-
2019
- 2019-12-26 CN CN201911370065.4A patent/CN110981314A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105585289A (en) * | 2015-12-21 | 2016-05-18 | 中民筑友有限公司 | Basalt-fiber reinforced cement-based material and preparation method thereof |
| CN105585111A (en) * | 2015-12-29 | 2016-05-18 | 四川力久知识产权服务有限公司 | Basalt fiber composite as well as preparation method and application thereof |
| CN106747229A (en) * | 2017-03-03 | 2017-05-31 | 辽宁工程技术大学 | A kind of direct plugging fiber injecting paste material and preparation method thereof |
| KR101815140B1 (en) * | 2017-06-07 | 2018-01-05 | 김경래 | Organic-inorganic hybrid mortar composition for repairing and restoring the surface of concrete structures and construction method using the same |
| CN108793877A (en) * | 2018-07-06 | 2018-11-13 | 佛山陵朝新材料有限公司 | A kind of concrete mortar |
Non-Patent Citations (1)
| Title |
|---|
| 高杨等: "《铁路隧道防排水设计指南》", 30 April 2018, 西南交通大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110818356B (en) | Preparation method of high-performance carbonized reinforced concrete | |
| CN110372281B (en) | High-strength low-shrinkage aerated concrete and preparation method thereof | |
| CN111320450A (en) | Self-compacting material for repairing railway concrete sleeper and preparation method and application thereof | |
| CN110078448B (en) | Anti-cracking early-strength concrete and preparation method thereof | |
| CN110606717B (en) | Concrete reinforcing additive and application thereof in ultra-high strength concrete | |
| CN107352915B (en) | A kind of high-performance fiber concrete of C110 strength grade and preparation method thereof | |
| CN112266193A (en) | Artificial steel slag aggregate and preparation method and application thereof | |
| CN107512888B (en) | A kind of high-performance fiber concrete of C140 strength grade and preparation method thereof | |
| CN107098661A (en) | It is a kind of to resist scattered fast repairing material and preparation method thereof under water | |
| CN110627439A (en) | Ultra-high performance concrete for expansion joint transition area and preparation method thereof | |
| CN106316294B (en) | A kind of Reactive Powder Concrete and preparation method thereof and purposes | |
| CN115784647B (en) | Preparation process of modified cement and early-strength ultra-high-performance concrete thereof | |
| CN105801048A (en) | Grouting material for repairing surface of airfield runway | |
| CN107352914A (en) | A kind of high-performance fiber concrete of C150 strength grades and preparation method thereof | |
| CN114409316A (en) | Impervious cement mortar and preparation method thereof | |
| CN113443901A (en) | High-strength alumina foamed ceramic and preparation method thereof | |
| CN105776998A (en) | Injecting paste material for repairing roadbed bottom karst cave | |
| CN110981314A (en) | Basalt leaking stoppage reinforcing material and preparation method thereof | |
| CN114477873B (en) | Recycled aggregate self-compacting concrete and preparation method thereof | |
| CN110981244A (en) | Concrete residual slurry treatment process | |
| CN115196901B (en) | Environment-friendly regeneration, recovery and disposal method of cement blocks | |
| CN113860834B (en) | Liquid regulator for super-dispersed, high-mud-resistance, high-foam-stability, low-shrinkage and reinforced autoclaved aerated concrete, and preparation method and application thereof | |
| CN107324729B (en) | A kind of high-performance fiber concrete of C100 strength grade and preparation method thereof | |
| CN112759338B (en) | Slag-based cementing material for 3D printing and preparation method thereof | |
| CN106747191A (en) | The enhanced steam pressurized brick of modified carbon nano-tube waterproof is mixed in one kind |
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: 20200410 |
|
| RJ01 | Rejection of invention patent application after publication |