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A kind of road repair material and preparation method thereof

A road and cement technology, applied in the field of road repair materials and their preparation, can solve the problems of slow curing and long-term maintenance, and achieve the effects of stable performance, excellent frost resistance and durability, and good water resistance.

Active Publication Date: 2021-01-01
CHINA UNIV OF MINING & TECH (BEIJING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, in order to overcome the shortcomings of traditional emergency repair materials such as slow curing and long-term maintenance after repairing, and the current traffic engineering requires rapid repair of road pavement and early opening to traffic, comprehensive steel fiber road repair materials have the advantages of rapid curing and super early strength. It is of great significance and value to develop a new type of steel fiber road repair material that is green, environmentally friendly, excellent in performance, and low in energy consumption with various advantages such as fast hardness, high strength, ease of construction, corrosion resistance, and waterproof and moisture resistance.

Method used

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  • A kind of road repair material and preparation method thereof
  • A kind of road repair material and preparation method thereof
  • A kind of road repair material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] 1) Prepare the raw materials according to the following proportions by weight:

[0054] 400 parts of cement, 750 parts of sand with a particle size of 0.35-0.50mm, 220 parts of fine gravel with a particle size of 5-10mm, 650 parts of coarse gravel with a particle size of 10-20mm, 90 parts of silica fume with a particle size of 0.1-0.3μm, 4 parts of powder, 1 part of coagulant lithium carbonate, 1 part of retarder sodium tetraborate, 30 parts of steel fiber with aspect ratio of 40-80, 7 parts of polypropylene fiber with fiber length of 3-10mm, fiber length 0.7 parts of 0.5-3mm wood fiber, 0.3 parts of air-entraining agent sodium lauryl sulfate, and 165 parts of water.

[0055] 2) Put the cement, sand, fine gravel, coarse gravel, silica fume, steel fiber, polypropylene fiber, and wood fiber into the dry powder mixer first, and stir for 2-3 minutes;

[0056] 3) Then put the formula amount of powder, coagulant accelerator, coagulant retarder, air-entraining agent and other...

Embodiment 2

[0061] Except preparing raw material by following weight portion proportioning, all the other are with embodiment 1:

[0062] 450 parts of cement, 800 parts of sand, 230 parts of fine gravel, 700 parts of coarse gravel, 100 parts of silica fume, 5 parts of powder, 3 parts of accelerator, 1 part of retarder, 25 parts of steel fiber, polypropylene fiber 7 parts, 0.7 parts of wood fiber, 0.3 parts of air-entraining agent, and 170 parts of water.

Embodiment 3

[0064] Except preparing raw material by following weight portion proportioning, all the other are with embodiment 1:

[0065] 480 parts of cement, 810 parts of sand, 240 parts of fine gravel, 750 parts of coarse gravel, 85 parts of silica fume, 5 parts of powder, 3 parts of coagulant, 1 part of retarder, 30 parts of steel fiber, polypropylene fiber 7 parts, 0.7 parts of wood fiber, 0.3 parts of air-entraining agent, and 172 parts of water.

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Abstract

The invention discloses a road first-aid repair material, which comprises the following ingredients (by weight): 400-600 parts of cement, 700-900 parts of sand, 220-250 parts of finely broken stone, 600-800 parts of coarse rock, 80-150 parts of silica fume, 2-6 parts of powder, 4-8 parts of a coagulant, 10-40 parts of steel fibre, 6-9 parts of polypropylene fiber, 0.6-0.9 part of wood fibre, 0.025-0.06 part of an air-entrainer, 160-190 parts of water, and 0-3 parts of a retarder. The road first-aid repair material is a green, environmentally-friendly and low-energy road first-aid repair material, and has advantages of rapid curing, super early strength, superfast hardness, high rigidity, simple and convenient construction, corrosion resistance, water and moisture resistance, etc.

Description

technical field [0001] The invention relates to a road repair material and a preparation method thereof, belonging to the field of environment-friendly green building materials. Background technique [0002] There are many railway and highway bridges and municipal roads in our country. Due to the use for many years, they need to be repaired and reinforced, and the reinforcement and repair work is required to be carried out without affecting normal operation. This puts forward high requirements for the method of repair and reinforcement and the performance of materials. . For example, the emergency repair of municipal roads and bridge decks requires rapid development of concrete strength, convenient operation, and no impact on traffic as much as possible; another example is the emergency repair and reinforcement of railways and highway bridges. Generally, the site is narrow and small, and even high-altitude operations require simple construction. ,Safety. Both new and old c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06
CPCC04B28/06C04B2111/0075C04B2111/20C04B2111/76C04B2201/50C04B14/02C04B14/06C04B18/146C04B18/26C04B14/48C04B16/0633C04B2103/12C04B2103/22C04B2103/304
Inventor 王栋民白亚飞张双成刘泽吕南马涛王琳琳王佳璇
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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