CN113480271B - Concrete pavement repairing material - Google Patents
Concrete pavement repairing material Download PDFInfo
- Publication number
- CN113480271B CN113480271B CN202110939020.5A CN202110939020A CN113480271B CN 113480271 B CN113480271 B CN 113480271B CN 202110939020 A CN202110939020 A CN 202110939020A CN 113480271 B CN113480271 B CN 113480271B
- Authority
- CN
- China
- Prior art keywords
- parts
- calcium sulfate
- concrete pavement
- modified
- 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.)
- Active
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
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/383—Whiskers
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Road Paving Structures (AREA)
Abstract
The invention provides a concrete pavement patching material, which comprises the following components: 40-60 parts of fine aggregate, 35-50 parts of Portland cement, 1-5 parts of fly ash, 0.1-0.5 part of modified basalt fiber, 0.1-0.3 part of modified calcium sulfate whisker, 0.1-0.5 part of solid alcohol amine, 0.2-0.4 part of sodium lignosulfonate and 0.5-1 part of quicklime by weight. The invention makes the concrete pavement patching material have low-temperature crack resistance, interface cohesiveness and fatigue resistance through the combination, proportion and synergistic action of the raw materials. Meanwhile, the repairing material can be cured in a short time, and can realize rapid repairing of the road surface and traffic as soon as possible by self-compacting and compacting; and the bonding force with the original pavement substrate is good, the shrinkage rate is low, and cracks are avoided.
Description
Technical Field
The invention relates to the field of concrete, in particular to a concrete pavement repairing material.
Background
With the development of road engineering in China, concrete pavements are widely used because of the advantages of durability, economy, impact resistance, frost resistance and the like, and the greatest advantage is that the concrete pavements can bear the gravity extrusion of overload.
In long-term use, due to the severe extrusion of the heavy vehicles on the concrete ground, and the conditions of aging, corrosion and the like, cracks can appear on the concrete pavement, and even the whole concrete pavement falls off. The damaged pavement needs to be maintained and maintained, and if the concrete can be timely treated, the service life of the concrete can be greatly prolonged and the use cost is reduced by only repairing and maintaining the surface of the concrete.
In order not to obstruct traffic, the concrete pavement patching material needs to be cured quickly, and the flexural strength and compressive strength of the pavement are restored in a short time. Meanwhile, whether pavement repair is successful depends on whether the repair material is well compatible with the original pavement matrix. The compatibility is mainly expressed in the aspects of shrinkage strain, thermal expansion series, elastic modulus, Poisson's ratio, binding power, fatigue performance, chemical activity and the like. This puts high demands on the repair material. At present, various indexes of the repair material in the prior art are low. Therefore, it is necessary to further improve the overall properties of the repair material, such as early strength and adhesive strength.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a concrete pavement repairing material.
A concrete pavement patching material comprises the following components: 40-60 parts of fine aggregate, 35-50 parts of portland cement, 1-5 parts of fly ash, 0.1-0.5 part of modified basalt fiber, 0.1-0.3 part of modified calcium sulfate whisker, 0.1-0.5 part of solid alcohol amine, 0.2-0.4 part of sodium lignosulfonate and 0.5-1 part of quick lime.
The water-material ratio of the concrete pavement patching material is 0.05-0.1: 1.
the fine aggregate is at least one of quartz sand, river sand and machine-made sand.
The preparation method of the modified basalt fiber comprises the following steps: preparing a titanate coupling agent solution, wherein the mass ratio of the coupling agent to the basalt fiber is 1-5: adding basalt fiber into 100, standing for 30-60min, taking out, and oven drying. The titanate coupling agent is preferably isopropyltris (dioctylphosphate) titanate or isopropyltris (dodecylbenzenesulfonyl) titanate.
The preparation method of the modified calcium sulfate whisker comprises the following steps: weighing calcium sulfate whisker, adding into modifier solution, stirring at 50-80 deg.C for reaction for 20-60min, separating, and oven drying. Wherein the modifier is sodium dodecyl benzene sulfonate, and the mass ratio of the calcium sulfate whisker to the sodium dodecyl benzene sulfonate is 1: 0.01-0.05; the stirring speed is 800-1200 r/min.
Preferably, the concrete pavement patching material comprises the following components: 50 parts of fine aggregate, 35 parts of Portland cement, 3 parts of fly ash, 0.1 part of modified basalt fiber, 0.2 part of modified calcium sulfate whisker, 0.3 part of solid alcohol amine, 0.2 part of sodium lignosulfonate and 0.5 part of quick lime, wherein the parts are in parts by weight.
Preferably, the concrete pavement patching material comprises the following components: 60 parts of fine aggregate, 45 parts of Portland cement, 4 parts of fly ash, 0.2 part of modified basalt fiber, 0.5 part of modified calcium sulfate whisker, 0.2 part of solid alcohol amine, 0.4 part of sodium lignosulfonate and 0.8 part of quick lime, wherein the parts are in parts by weight.
Compared with liquid alcohol amines such as triethanolamine and the like, the solid alcohol amine is convenient to use, hydration products are distributed more reasonably, the slurry structure is more perfect, and the strength is ensured. The fly ash is an active admixture, the early drying speed of the concrete can be effectively reduced by adding a proper amount of fly ash, the early self-shrinkage is obviously reduced, and the early strength is influenced if the addition amount is too large. The basalt fiber has the characteristics of light weight, high strength, good chemical stability and the like, the strength and the durability can be improved when the basalt fiber is added into concrete, and the bonding strength with a matrix is improved by modifying the basalt fiber through a titanate coupling agent. The calcium sulfate whisker is a micron-grade material, can improve the framework strength of the calcium sulfate whisker by being doped into concrete, can combine cement hydration products with the calcium sulfate whisker to enhance the strength of a space framework, avoids generating cracks, and can continuously fill pores and micropores generated in the production process. The invention adopts sodium dodecyl benzene sulfonate to modify calcium sulfate, improves the activity of the calcium sulfate crystal whisker and further improves the performance of concrete. The sodium lignosulfonate has the effects of early strength, water reduction and the like.
The invention has the following beneficial effects: the invention makes the concrete pavement patching material have low-temperature crack resistance, interface cohesiveness and fatigue resistance through the combination, proportion and synergistic action of the raw materials. Meanwhile, the repairing material can be cured in a short time, and can realize rapid repairing of the road surface and traffic as soon as possible by self-compacting and compacting; and the bonding force with the original pavement substrate is good, the shrinkage rate is low, and cracks are avoided.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is in no way intended to limit the invention.
Example 1:
a concrete pavement patching material comprises the following components: 50 parts of river sand, 35 parts of Portland cement, 3 parts of fly ash, 0.1 part of modified basalt fiber, 0.2 part of modified calcium sulfate whisker, 0.3 part of solid alcohol amine, 0.2 part of sodium lignosulfonate and 0.5 part of quick lime, wherein the parts are in parts by weight.
The preparation method of the modified basalt fiber comprises the following steps: preparing a titanate coupling agent solution, wherein the mass ratio of the coupling agent to the basalt fiber is 2: adding basalt fiber into 100, standing for 30min, taking out, and oven drying. The titanate coupling agent is isopropyl tri (dioctyl pyrophosphate) titanate.
The preparation method of the modified calcium sulfate whisker comprises the following steps: weighing calcium sulfate whisker, adding into sodium dodecyl benzene sulfonate solution, stirring and reacting at 80 ℃ for 30min, and then separating and drying to obtain the calcium sulfate whisker. Wherein the modifier is sodium dodecyl benzene sulfonate, and the mass ratio of the calcium sulfate whisker to the sodium dodecyl benzene sulfonate is 1: 0.03; the stirring speed was 1000 r/min.
The water-material ratio of the concrete pavement patching material in use is 0.08: 1.
example 2
A concrete pavement patching material comprises the following components: 60 parts of river sand, 45 parts of Portland cement, 4 parts of fly ash, 0.2 part of modified basalt fiber, 0.5 part of modified calcium sulfate whisker, 0.2 part of solid alcohol amine, 0.4 part of sodium lignosulfonate and 0.8 part of quick lime, wherein the parts are in parts by weight.
The preparation method of the modified basalt fiber comprises the following steps: preparing a titanate coupling agent solution, wherein the mass ratio of the coupling agent to the basalt fiber is 2: adding basalt fiber into 100, standing for 30min, taking out, and oven drying. The titanate coupling agent is isopropyl tri (dioctyl pyrophosphate) titanate.
The preparation method of the modified calcium sulfate whisker comprises the following steps: weighing calcium sulfate whisker, adding into sodium dodecyl benzene sulfonate solution, stirring and reacting at 80 ℃ for 30min, and then separating and drying to obtain the calcium sulfate whisker. Wherein the modifier is sodium dodecyl benzene sulfonate, and the mass ratio of the calcium sulfate whisker to the sodium dodecyl benzene sulfonate is 1: 0.03; the stirring speed was 1000 r/min.
The water-material ratio of the concrete pavement patching material in use is 0.09: 1.
comparative example 1
The calcium sulfate whiskers were not modified, and the rest was the same as in example 1.
Comparative example 2
Basalt was not modified, and the rest was the same as in example 1.
Comparative example 3
The titanate coupling agent was replaced with the silane coupling agent KH-550, and the rest was the same as in example 1.
Comparative example 4
50 parts of river sand, 35 parts of Portland cement, 8 parts of fly ash, 0.1 part of modified basalt fiber, 0.2 part of modified calcium sulfate whisker, 0.3 part of solid alcohol amine, 0.2 part of sodium lignosulfonate and 0.5 part of quick lime, wherein the parts are the same as the parts by weight in the example 1.
Comparative example 5
50 parts of river sand, 35 parts of Portland cement, 3 parts of fly ash, 0.5 part of modified basalt fiber, 0.4 part of modified calcium sulfate whisker, 0.6 part of solid alcohol amine, 0.2 part of sodium lignosulfonate and 0.5 part of quick lime, wherein the parts are the same as the parts by weight in the example 1.
The performance tests were performed for examples 1-2, comparative examples 1-5. The compression strength, the breaking strength, the tensile bond strength and the 28d dry shrinkage are tested according to JC/T2381-2016, and are shown in the following tables.
| 28d tensile bond Strength/MPa | 28d dry shrinkage/%) | |
| Example 1 | 4.36 | -0.023 |
| Example 2 | 4.53 | -0.024 |
| Comparative example 1 | 2.13 | -0.035 |
| Comparative example 2 | 2.43 | -0.032 |
| Comparative example 3 | 2.86 | -0.033 |
| Comparative example 4 | 3.12 | -0.041 |
| Comparative example 5 | 3.24 | -0.036 |
According to the experiments, the basalt fibers and the calcium sulfate whiskers are modified, and the proportion of each component is regulated, so that the curing in a short time is realized, and the higher strength is realized; has good interface adhesion, low shrinkage rate and improved durability.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. A concrete pavement patching material comprises the following components: 40-60 parts of fine aggregate, 35-50 parts of Portland cement, 1-5 parts of fly ash, 0.1-0.5 part of modified basalt fiber, 0.1-0.3 part of modified calcium sulfate whisker, 0.1-0.5 part of solid alcohol amine, 0.2-0.4 part of sodium lignosulfonate and 0.5-1 part of quicklime by weight;
the preparation method of the modified basalt fiber comprises the following steps: preparing a titanate coupling agent solution, wherein the mass ratio of the coupling agent to the basalt fiber is 1-5: 100 adding basalt fiber, standing for 30-60min, taking out and drying to obtain the product, wherein the titanate coupling agent is isopropyl tri (dioctyl pyrophosphate) titanate or isopropyl tri (dodecyl benzene sulfonyl) titanate;
the preparation method of the modified calcium sulfate whisker comprises the following steps: weighing calcium sulfate whiskers, adding the calcium sulfate whiskers into a modifier solution, stirring and reacting at 50-80 ℃ for 20-60min, then separating and drying to obtain the calcium sulfate whisker modifier, wherein the modifier is sodium dodecyl benzene sulfonate, and the mass ratio of the calcium sulfate whiskers to the sodium dodecyl benzene sulfonate is 1: 0.01-0.05; the stirring speed is 800-1200 r/min.
2. A concrete pavement patching material according to claim 1, wherein the concrete pavement patching material has a water-to-material ratio of 0.05-0.1: 1.
3. a concrete pavement patching material as claimed in claim 1, wherein the fine aggregate is at least one of quartz sand, river sand, and machine-made sand.
4. A concrete pavement patching material as claimed in claim 1, comprising the following ingredients: 50 parts of fine aggregate, 35 parts of Portland cement, 3 parts of fly ash, 0.1 part of modified basalt fiber, 0.2 part of modified calcium sulfate whisker, 0.3 part of solid alcohol amine, 0.2 part of sodium lignosulfonate and 0.5 part of quick lime, wherein the parts are in parts by weight.
5. A concrete pavement patching material as claimed in claim 1, comprising the following ingredients: 60 parts of fine aggregate, 45 parts of Portland cement, 4 parts of fly ash, 0.2 part of modified basalt fiber, 0.5 part of modified calcium sulfate whisker, 0.2 part of solid alcohol amine, 0.4 part of sodium lignosulfonate and 0.8 part of quick lime, wherein the parts are in parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110939020.5A CN113480271B (en) | 2021-08-16 | 2021-08-16 | Concrete pavement repairing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110939020.5A CN113480271B (en) | 2021-08-16 | 2021-08-16 | Concrete pavement repairing material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113480271A CN113480271A (en) | 2021-10-08 |
| CN113480271B true CN113480271B (en) | 2022-05-17 |
Family
ID=77946591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110939020.5A Active CN113480271B (en) | 2021-08-16 | 2021-08-16 | Concrete pavement repairing material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113480271B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115925366B (en) * | 2022-12-28 | 2024-08-20 | 中冶武汉冶金建筑研究院有限公司 | Self-repairing concrete with comprehensive enhanced performance and preparation method thereof |
| CN116161927B (en) * | 2023-02-21 | 2023-11-24 | 武汉金中海高新科技有限公司 | Waterproof and impervious concrete material and preparation method thereof |
| CN117776635B (en) * | 2024-02-28 | 2024-05-28 | 北京城建集团有限责任公司 | Large-volume shrinkage compensation impervious concrete for garbage pool and leachate pool |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1880257A (en) * | 2005-06-16 | 2006-12-20 | 同济大学 | Fiber material for preventing dry shrinkage and cracking of hardening cement base material and its preparation method |
| CN108203280A (en) * | 2018-02-05 | 2018-06-26 | 陕西交科新材料有限公司 | A kind of low high-strength expansion joint anchoring composite materials of bullet |
| CN108840612A (en) * | 2018-07-25 | 2018-11-20 | 佛山陵朝新材料有限公司 | A kind of preparation method of high-adhesion high intensity pavement patching material |
| KR101956631B1 (en) * | 2018-07-16 | 2019-03-11 | 김종철 | Quick-hardening cement concrete composition for repairing road and road repairing method therewith |
| KR102124771B1 (en) * | 2019-12-13 | 2020-06-22 | 김봉기 | High-functional and eco-friendly mortar composition for protecting surface of wet and underwater concrete structures and method of repairing and reinforcing concrete structure using the same |
| CN111423164A (en) * | 2020-04-01 | 2020-07-17 | 盐城工学院 | Whisker toughening and reinforcing geopolymer and preparation method thereof |
-
2021
- 2021-08-16 CN CN202110939020.5A patent/CN113480271B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1880257A (en) * | 2005-06-16 | 2006-12-20 | 同济大学 | Fiber material for preventing dry shrinkage and cracking of hardening cement base material and its preparation method |
| CN108203280A (en) * | 2018-02-05 | 2018-06-26 | 陕西交科新材料有限公司 | A kind of low high-strength expansion joint anchoring composite materials of bullet |
| KR101956631B1 (en) * | 2018-07-16 | 2019-03-11 | 김종철 | Quick-hardening cement concrete composition for repairing road and road repairing method therewith |
| CN108840612A (en) * | 2018-07-25 | 2018-11-20 | 佛山陵朝新材料有限公司 | A kind of preparation method of high-adhesion high intensity pavement patching material |
| KR102124771B1 (en) * | 2019-12-13 | 2020-06-22 | 김봉기 | High-functional and eco-friendly mortar composition for protecting surface of wet and underwater concrete structures and method of repairing and reinforcing concrete structure using the same |
| CN111423164A (en) * | 2020-04-01 | 2020-07-17 | 盐城工学院 | Whisker toughening and reinforcing geopolymer and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113480271A (en) | 2021-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113480271B (en) | Concrete pavement repairing material | |
| CN109574567B (en) | Anti-freezing recycled concrete and preparation method thereof | |
| CN107954656A (en) | A kind of regenerative micro powder concrete with superelevation ductility and preparation method thereof | |
| CN110357545B (en) | Mortar for quickly repairing local damage of concrete base layer and preparation method thereof | |
| CN102557555A (en) | Mineral fiber-modified flexible rubber concrete | |
| CN112159168B (en) | C35 basalt fiber concrete for abutment and preparation method thereof | |
| CN107382180A (en) | A kind of high ductility enhanced water resistance cement-base composite material of high intensity and preparation method thereof | |
| CN103387356A (en) | Engineered cementitious composite (ECC) repairing material and preparation method thereof | |
| CN113831152B (en) | All-solid-waste high-strength permeable geopolymer concrete and preparation method thereof | |
| CN110981400A (en) | Low-shrinkage steam-curing-free self-compacting C140UHPC and preparation method thereof | |
| CN114380562B (en) | Preparation method of anti-freezing recycled concrete and anti-freezing recycled concrete | |
| CN114634338A (en) | High-ductility cement-based composite material for wind-blown sand in desert and preparation method thereof | |
| CN111187042A (en) | Light high-strength concrete and preparation method thereof | |
| CN113896483A (en) | Anti-crack concrete and preparation method thereof | |
| CN112341104B (en) | High-performance road rubber concrete and preparation method thereof | |
| CN109626920A (en) | A kind of concrete road surface material for quickly repairing and preparation method with high intensity and endurance quality | |
| CN109626910B (en) | Carbon fiber sea sand high-performance concrete material and preparation method thereof | |
| CN110627473A (en) | Phosphorus-silicon-magnesium-based special rapid-hardening material and preparation method thereof | |
| CN111253130A (en) | High-strength heat-resistant self-repairing concrete and preparation method thereof | |
| CN110937868A (en) | Self-compacting hybrid fiber concrete and preparation method thereof | |
| CN113636802A (en) | Ultrahigh-performance concrete and preparation method thereof | |
| CN112521081A (en) | Building reinforced high-ductility concrete and preparation and construction method thereof | |
| CN116514478B (en) | Calcium carbonate and carbon fiber reinforced concrete and preparation method thereof | |
| CN111925166A (en) | Glass fiber reinforced concrete material and preparation method thereof | |
| CN117645451A (en) | Fiber-toughened anti-cracking cement stabilized macadam and preparation method and construction 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |