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Red mud-based self-suspension flexible grouting material and preparation method thereof

A grouting material and self-suspension technology, applied in the field of road maintenance materials, can solve the problems of poor self-suspension performance, insufficient adhesion, and poor flexibility, and achieve low cost, good fluidity, and good flexibility

Inactive Publication Date: 2016-06-15
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These red mud-based grouting materials have a certain mechanical strength, and realize the large-scale application of red mud to a certain extent, but their self-suspension performance is poor, the adhesion is insufficient, and the flexibility is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A red mud-based self-suspension flexible grouting material, the preparation method of which is as follows:

[0033] Step 1: Weigh 55 parts of red mud, add 28 parts of water and stir evenly, then add 8 parts of anionic polyacrylamide, 6 parts of polyethylene glycol-400, 1 part of triethylenediamine, 2 parts of glucose, and continue stirring uniform, spare;

[0034] Step 2: Weigh 100 parts of PM-200 polymethylene polyphenyl polyisocyanate;

[0035] Step 3: Mix the prepared component A and component B uniformly according to the volume ratio of 1:1, and the grouting material is finished after reaction and curing.

[0036] The material test indicators are as follows:

[0037] After A and B components were left standing for 2 months, the free liquid was 0.0%; after A and B components were mixed and cured for 4 hours, the bonding strength was 2.6MPa, the flexural strength was 19.3MPa, and the flexural displacement was 10.5mm.

Embodiment 2

[0039] A red mud-based self-suspension flexible grouting material, the preparation method of which is as follows:

[0040] Step 1: Weigh 55 parts of red mud, add 25 parts of water and stir evenly, then add 7 parts of cationic polyacrylamide, 4 parts of polyvinyl alcohol, 4 parts of polyethylene glycol-200, 2 parts of ethyl morpholine, 3 parts of glucose, continue to stir evenly, set aside;

[0041] Step 2: Weigh 100 parts of PM-200 polymethylene polyphenyl polyisocyanate;

[0042] Step 3: Mix the prepared component A and component B according to the volume ratio of 0.9:1 and stir evenly, and the grouting material will be finished after reaction and solidification.

[0043] The material test indicators are as follows:

[0044] After components A and B were left standing for 2 months, the free liquid was 0.0%; after components A and B were mixed and cured for 4 hours, the bonding strength was 3.2MPa, the flexural strength was 17.5MPa, and the flexural displacement was 12.1mm. ...

Embodiment 3

[0046] Step 1: Weigh 60 parts of red mud, add 25 parts of water and stir evenly, then add 8 parts of polyvinyl alcohol, 2 parts of polyethylene glycol-600, 1 part of tetramethylbutylene diamine, 4 parts of glucose, and continue stirring uniform, spare;

[0047] Step 2: Weigh 100 parts of PM-200 polymethylene polyphenyl polyisocyanate in proportion;

[0048] Step 3: Mix the prepared component A and component B according to the volume ratio of 1.1:1 and stir evenly, and the grouting material is finished after reaction and solidification.

[0049] The material test indicators are as follows:

[0050] After A and B components were left standing for 2 months, the free liquid was 0.0%; after A and B components were mixed and cured for 4 hours, the bonding strength was 2.3MPa, the flexural strength was 20.8MPa, and the flexural displacement was 9.3mm.

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Abstract

The invention provides a red mud-based self-suspension flexible grouting material and a preparation method thereof, and mainly aims at solving the technical problems that an existing inorganic grouting material is poor in self-suspension performance and bad in flexibility. According to the red mud-based self-suspension flexible grouting material and the preparation method thereof, red mud, a suspending agent, a catalyst, a cross-linking agent and water are adopted to compose a component A, polyaryl polymethylene isocyanate serves as a component B, in the use process, the component A and the component B are mixed to be uniform according to a proportion, and the red mud-based self-suspension flexible grouting material is obtained. The red mud-based grouting material is good in self-suspension performance and easy to grout; the curing time is easy to control, the bonding strength is high after curing is achieved, and the flexibility is good. The red mud-based self-suspension flexible grouting material can be widely applied to repairing of road cracks.

Description

technical field [0001] The invention belongs to the field of road maintenance materials, and in particular relates to a red mud-based self-suspension flexible grouting material and a preparation method thereof. Background technique [0002] With the increase of the service life of the highway, many highways have more or less disease problems, among which cracks are the most common and most likely to occur in the highway pavement damage, it appears in the entire service period of the highway, and It is aggravated with the growth of highway road age. The harm of pavement cracks lies in the continuous infiltration of water from the cracks, which accelerates the aging of the base roadbed, leads to a continuous decline in the bearing capacity of the pavement, and produces steps, mud, cracks and other diseases, thereby accelerating the destruction of the high-speed pavement. At present, commonly used road repair materials are mainly divided into inorganic and organic grouting mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/32C08G18/65C08G18/62C08G18/40C08K3/22C08K3/36
CPCC08G18/7664C08G18/3206C08G18/3218C08G18/4063C08G18/4833C08G18/6212C08G18/6517C08G18/6677C08K3/22C08K3/36C08K2003/2206C08K2003/2227C08K2003/2272
Inventor 杨政鹏张雪峰张春静张春克牛宇涛管学茂
Owner HENAN POLYTECHNIC UNIV
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