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Road crack repairing material

A technology for repairing materials and cracks, which is applied in the field of caulking materials. It can solve problems such as the inability to keep the road surface level, the inability to maintain the filling state, and large temperature and dry shrinkage deformation. It achieves excellent anti-ultraviolet aging ability and enhances anti-stripping Effect superior in ability, absorption effect

Active Publication Date: 2016-02-24
SHANDONG JIANZHU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This repair method works well in the early stage of application, but its durability is poor: the lower part of the cement grouting material has a large temperature and dry shrinkage deformation, and when it shrinks and deforms, it will be separated from the original base crack wall and lose its support for the upper asphalt joint filling Due to the function of the material, the asphalt-based joint filler will fall to the lower part. As a result, the crack filling part will not be kept flush with the road surface, or cannot maintain a filling state, resulting in repair failure

Method used

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Examples

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Embodiment 1

[0053] A road crack repair material, comprising a grout for filling the lower part of the crack and a joint filling material for filling the upper part of the crack; the grout comprises the following components in mass fraction: 20% F-class fly ash, 60% cement kiln dust and 20% water; the joint filler includes the following components in mass fractions: 55% nano-zinc oxide-based asphalt and 45% granulated blast furnace slag powder, and the nano-zinc oxide-based asphalt contains nanometer The mass fraction of zinc oxide is 0.8%. Wherein, nano-zinc oxide is commercially available high-activity nano-zinc oxide.

[0054] The preparation method of described road crack repairing material, comprises the steps:

[0055] A. Preparation of grout

[0056] a1. Evenly mix fly ash and cement kiln dust according to the proportion;

[0057] a2. Add water in proportion and stir to obtain a paste, which is the grouting material;

[0058] B. Preparation of joint filler

[0059] b1. Base asp...

Embodiment 2

[0068] A road crack repair material, comprising a grout for filling the lower part of the crack and a joint filler for filling the upper part of the crack; the grout comprises the following components in mass fraction: 25% F-class fly ash, 50% cement kiln dust and 25% water; the joint filler includes the following components in mass fraction: 50% nano-zinc oxide-based asphalt and 50% slag powder, the nano-zinc oxide in the nano-zinc oxide-based asphalt The mass fraction is 1%.

[0069] The preparation method of described road crack repairing material, comprises the steps:

[0070] A. Preparation of grout

[0071] a1. Evenly mix fly ash and cement kiln dust according to the proportion;

[0072] a2. Add water in proportion and stir to obtain a paste, which is the grouting material;

[0073] B. Preparation of joint filler

[0074] b1. Heat the base asphalt to 150°C, add nano-zinc oxide particles in proportion, and stir for 1.5 hours at a stirring speed of 3000rpm to obtain na...

Embodiment 3

[0077] A road crack repair material, comprising grouting material for filling the lower part of the crack and joint filler for filling the upper part of the crack; the grouting material includes the following components in mass fraction: 15% fly ash, 70% cement Kiln dust and 15% water; Described joint filler comprises the component of following mass fraction: the slag powder of 60% nano-zinc oxide base asphalt and 40%, the mass fraction of nano zinc oxide in the described nano-zinc oxide base asphalt is 1.5%.

[0078] The preparation method of described road crack repairing material, comprises the steps:

[0079] A. Preparation of grout

[0080] a1. Evenly mix fly ash and cement kiln dust according to the proportion;

[0081] a2. Add water in proportion and stir to obtain a paste, which is the grouting material;

[0082] B. Preparation of joint filler

[0083] b1. Base asphalt is heated to 155°C, adding nano-zinc oxide particles in proportion, and stirring at a stirring sp...

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Abstract

The invention discloses a road crack repairing material, and belongs to the field of a joint filling material. The material is composed of a grouting material for filling a lower part of a crack and a caulking compound for filling an upper part of the crack; the grouting material comprises the following components in percentages by mass: 10-30% of fly ash, 45-80% of cement kiln dust and the balance being water; the caulking compound comprises the following components in percentages by mass: 30-65% of nanometer zinc oxide-based asphalt and 30-60% of slag powder, and the nanometer zinc oxide-based asphalt contains 0.2-2% of nanometer zinc oxide in percentages by mass. The road crack repairing material is used for repairing the road crack, the grouting material is used for filling the lower part of the pavement crack, and the caulking compound is used for filling the upper part of the crack; the two materials are used in combination with durability and low cost.

Description

technical field [0001] The invention relates to the technical field of joint filling materials, in particular to a road crack repairing material. Background technique [0002] The pavement layer of structures such as roads, basketball courts, and parking lots is prone to cracking under the combined effects of climate, load, and material factors. In cold areas or areas with large temperature difference between day and night, even newly-built roads are prone to temperature shrinkage cracking and damage within 1-2 years of use. In my country, semi-rigid base asphalt pavement is the most commonly used road structure type. In addition to temperature shrinkage cracking, reflection cracks caused by semi-rigid base temperature and dry shrinkage are also particularly common. [0003] In addition to affecting the aesthetics, integrity and driving comfort of the road, pavement cracking will also induce more serious structural damage under the influence of water temperature, driving lo...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B26/26C04B18/14
CPCY02W30/91
Inventor 耿立涛徐茜任瑞波王立志王鹏王伯霖邢万东徐强高晓宁王晓英
Owner SHANDONG JIANZHU UNIV
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