Durable cement concrete road slab bottom grouting material and preparation method thereof

A cement concrete road, durable technology, applied in the field of road engineering materials, can solve the problems of poor durability of the road surface, achieve good water dispersion resistance, improve stability, and reduce the effect of grouting pressure

Active Publication Date: 2020-04-24
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a durable cement concrete road slab bottom grouting material and its preparation method to solve the technical problem of poor durability of existing grouting materials for road surface maintenance

Method used

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  • Durable cement concrete road slab bottom grouting material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment provides a kind of durable cement concrete pavement bottom grouting material, and this grouting material is made of the following raw materials in terms of weight fraction: cement is 32%, fly ash is 27%, and water reducer is 0.50%, complexing agent 5%, complex A 8%, complex B 7%, water 20.5%;

[0035] The composite A is made of the following raw materials in terms of weight fraction: 70% of precipitated silica, 5% of asbestos, and 25% of attapulgite;

[0036] The composite B is made of the following raw materials in terms of weight fraction: 80% of sepiolite, 5% of superabsorbent resin, and 15% of magnesium oxide expansion agent.

[0037] In this example:

[0038] The complexing agent is powdered sodium ethylenediaminetetramethylene phosphate with a fineness of 300 mesh.

[0039] The cement is 42.5 grade quick-hardening sulfoaluminate cement with an apparent density of 3.0-3.2g / cm 3 .

[0040] Fly ash is a first-class fly ash with an apparent density...

Embodiment 2

[0053] This embodiment provides a durable cement concrete road slab bottom grouting material, the grouting material is made of the following raw materials in terms of weight fraction: 35% of cement, 25% of fly ash, and 25% of water reducer 0.55%, complexing agent 5%, complex A 6%, complex B 7%, water 21.45%.

[0054] The composite A is made of the following raw materials in terms of weight fraction: 60% of precipitated silica, 15% of asbestos, and 25% of attapulgite;

[0055] The composite B is made of the following raw materials in terms of weight fraction: 80% of sepiolite, 5% of superabsorbent resin, and 15% of magnesium oxide expansion agent.

[0056] The kind and consumption requirement of each raw material in the present embodiment are identical with embodiment 1.

[0057] The preparation method of the durable cement concrete pavement bottom grouting material of this embodiment is basically the same as that of Embodiment 1.

[0058] The performance test process of this...

Embodiment 3

[0060] This embodiment provides a kind of durable cement concrete pavement bottom grouting material, and this grouting material is made of the following raw materials in terms of weight fraction: cement is 38%, fly ash is 22%, and water reducing agent is 0.45%, complexing agent 5%, complex A 6%, complex B 5%, water 23.55%;

[0061] The composite A is made of the following raw materials in terms of weight fraction: 70% of precipitated silica, 10% of asbestos, and 20% of attapulgite;

[0062] The composite B is made of the following raw materials in terms of weight fraction: 80% of sepiolite, 10% of superabsorbent resin, and 10% of magnesium oxide expansion agent.

[0063] The kind and consumption requirement of each raw material in the present embodiment are identical with embodiment 1.

[0064] The preparation method of the durable cement concrete pavement bottom grouting material of this embodiment is basically the same as that of Embodiment 1.

[0065] The performance test...

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Abstract

The invention provides an endurable cement concrete pavement slab bottom injecting paste material and a preparing method thereof. The endurable cement concrete pavement slab bottom injecting paste material is prepared from cement, pulverized fuel ash, a water reducing agent and water, and is further prepared from a compound A, a compound B and a complexing agent. The compound A is prepared from, by weight, 60%-70% of precipitated silicon dioxide, 5%-10% of asbestos and 20%-30% of attapulgite, and the sum of the weight percentages of the raw materials is 100%; the compound B is prepared from, by weight, 80% of sepiolite, 5%-10% of super absorbent resin and 10%-15% of magnesia expansive agent, and the sum of the weight percentages of the raw materials is 100%. The endurable cement concrete pavement slab bottom injecting paste material is quick in gelling, high in water-dispersion-prevention performance, large in fluidity and high in permeability, can permeate into a solidified soil bodyand a pavement base layer or into an interface with a certain quantity of active mineral materials, the viscosity and stability are high, the rheological loss of slurry can be lowered, the anti-freezing and anti-permeability performance is high, and the corrosion resistance is high under the effect of snow melting salt.

Description

technical field [0001] The invention belongs to the field of road engineering materials, and relates to a road slab bottom grouting material, in particular to a durable cement concrete road slab bottom grouting material and a preparation method thereof. Background technique [0002] As a high-grade pavement structure, cement concrete pavement has the advantages of long service life, small maintenance workload, low energy consumption, simple construction, and strong adaptability to traffic levels and environments. Since the 1980s, my country's cement concrete pavement has developed rapidly. According to statistics, as of the end of 2016, the total mileage of my country's highways has reached about 5 million kilometers, and various grades of cement roads account for about 60% of the total mileage of paved roads. However, due to unreasonable pavement design and construction, heavy traffic load, improper material composition, poor pavement drainage and other reasons, the use of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06
CPCC04B28/06C04B2111/0075C04B2201/50C04B18/08C04B24/226C04B22/002C04B14/066C04B14/40C04B14/102C04B14/042C04B22/066C04B24/24C04B24/121
Inventor 何锐龙景潭王铜陈华鑫王振军仵江涛
Owner CHANGAN UNIV
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