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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0052] Example 1

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

[0054] The preparation method of the road crack repair material includes 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 paste, which is grout;

[0058] B, preparation of joint filler

[0059] b1. The base asphalt is heated to 1...

Example Embodiment

[0067] Example 2

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

[0069] The preparation method of the road crack repair material includes 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 paste, which is grout;

[0073] B, preparation of joint filler

[0074] b1. The base asphalt is heated to 150°C, the nano zinc oxide particles are added in proportion, and the stirring speed is 3000 rpm for 1.5 hours to obtai...

Example Embodiment

[0076] Example 3

[0077] A road crack repair material, comprising a grouting material for filling the lower part of the crack and a 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; the joint filler includes the following components in mass fraction: 60% nano-zinc oxide-based asphalt and 40% slag powder, the mass fraction of nano-zinc oxide in the nano-zinc oxide-based asphalt is 1.5%.

[0078] The preparation method of the road crack repair material includes 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 paste, which is grout;

[0082] B, preparation of joint filler

[0083] b1. The base pitch is heated to 155°C, the nano zinc oxide particles are added in proportion, and the stirring speed is 4000 rpm for 1 hour to obtain nano ...

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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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