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A kind of quick-setting anti-cracking cold pouring material for pavement crack repair and preparation method thereof

A pavement crack and quick-setting technology, which is applied in the field of road engineering crack repair materials, can solve problems such as slow curing speed, low temperature crack resistance, insufficient toughness, and traffic delays, and achieve strong adhesion, convenient and fast construction, and guaranteed repair effect of effect

Active Publication Date: 2020-08-04
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the inventors found that the above-mentioned patent still has the problems of low-temperature crack resistance, insufficient toughness, slow curing speed, and traffic delays.

Method used

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  • A kind of quick-setting anti-cracking cold pouring material for pavement crack repair and preparation method thereof
  • A kind of quick-setting anti-cracking cold pouring material for pavement crack repair and preparation method thereof
  • A kind of quick-setting anti-cracking cold pouring material for pavement crack repair and preparation method thereof

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preparation example Construction

[0054] The present disclosure also provides a method for preparing the above-mentioned quick-setting and cooling joint filling material for repairing pavement cracks. The steps are as follows:

[0055] (1) Preparation of SBR latex-modified emulsified asphalt: weigh the asphalt by weight, and heat the asphalt to 130-150°C; weigh the cationic surfactant, acidity regulator, SBR latex and water by weight, under stirring mode Mix uniformly and maintain the temperature at 60-70°C; process and emulsify the asphalt and the above-mentioned mixed solution under a colloid mill for 5-8 minutes, wherein the rotational speed of the colloid mill is set to 4000-8000 rpm; carry out the SBR latex with the cationic emulsified asphalt prepared above. Mix evenly to obtain SBR latex modified emulsified asphalt.

[0056] (2) cooling the SBR latex modified emulsified asphalt prepared in (1) to 20-45° C., then adding corresponding amounts of defoaming agent, early-strength agent and water-reducing age...

Embodiment 1

[0074] A preparation method of a quick-setting and cooling joint filling material used for repairing pavement cracks, comprising the following steps:

[0075] (1) Weigh 800g of heavy traffic asphalt AH-70, and heat the asphalt to 135°C; Weigh 60g of cationic surfactant (quaternary ammonium salt), 50g of SBR latex, 40g of acidity regulator (acetic acid) and 180g of water , mix evenly under stirring mode and maintain the temperature at 70°C; process and emulsify the asphalt and the above mixture under a colloid mill for 5 minutes, wherein the rotational speed of the colloid mill is set to 8000rpm, and mix the SBR latex with the cationic emulsified asphalt prepared above. Evenly, the SBR latex modified emulsified asphalt is obtained.

[0076] (2) Cool the SBR latex modified emulsified asphalt prepared in (1) to 30°C, then add 25 g of calcium chloride, 15 g of polyether-polyetheramine, and 30 g of naphthalene sulfonate formaldehyde polymer, and stir at 500 rpm 5min to obtain A co...

Embodiment 2

[0085] A preparation method for a quick-setting cold filling material for pavement crack repair, comprising the steps of:

[0086] (1) Weigh 700g of heavy traffic road asphalt AH-50, and heat the asphalt to 130°C; weigh 100g of cationic surfactant (alkylimidazolinium salt), 80g of SBR latex, 50g of acidity regulator (acetic acid) and Mix 200g of water evenly in the stirring mode and keep the temperature at 70°C; process and emulsify the asphalt and the above mixed solution under the colloid mill for 5 minutes, wherein the speed of the colloid mill is set to 4000rpm, mix the SBR latex with the cationic emulsified asphalt prepared above Mix evenly to obtain SBR latex modified emulsified asphalt.

[0087] (2) Cool the SBR latex modified emulsified asphalt prepared in (1) to 20°C, then add 10g of aluminum chloride, 10g of organic silicon, and 20g of lignosulfonate, and stir at 300rpm for 5min to obtain component A.

[0088] (3) Weigh 650g of red mud and sieve it through 1mm to ge...

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Abstract

The invention relates to a quick-setting anti-cracking cold gap grouting material for repairing pavement cracks and a preparation method thereof. The material is prepared by mixing a component A and acomponent B. The component A is composed of SBR latex modified emulsified asphalt, a defoaming agent, a water reducing agent and an early strength agent; and the component B is composed of red mud and a self-made curing agent. The strength of the gap grouting material of the invention can be effectively adjusted and controlled. At the same time, because of a reasonable ratio of the red mud and the self-made curing agent, the gap grouting can realize rapid setting after being poured to cracks of a road, thereby preventing unsmooth traffic caused by slow setting. The flexible components such asSBR and asphalt can effectively improve the low-temperature crack resistance of the gap grouting material; and at the same time, the gap grouting material has strong bonding strength, excellent high-and-low temperature performance and long service life, thereby ensuring repairing effect. The quick-setting cold gap grouting material of the invention can be directly applied to cold gap grouting only by simply and uniformly mixing the components A and B on site in the process of construction, so construction is convenient and quick, and required gap grouting equipment is simple and easily available.

Description

technical field [0001] The invention belongs to the technical field of road engineering crack repairing materials, and in particular relates to a fast-setting anti-cracking cold-filling material for pavement crack repairing and a preparation method thereof. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] With the improvement of the national highway network structure, the importance of maintenance management has gradually increased. my country's highways have gradually entered the maintenance period from the period of large-scale comprehensive construction, and the investment in preventive maintenance of highways will also increase. However, due to the repeated effects of vehicle loads, cyclical changes in climate and various factors such as construction, the asphalt pavement has suffered various early diseases in succession. The manifest...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26C04B111/72
CPCC04B28/26C04B2111/0075C04B2111/72C04B24/36C04B24/121C04B24/26C04B24/04C04B22/124C04B24/32C04B24/226C04B18/0409C04B22/064C04B22/062C04B7/02C04B14/365C04B22/12C04B24/42C04B24/18C04B18/26C04B22/122C04B24/026C04B24/28
Inventor 梁明姚占勇蒋红光张吉哲
Owner SHANDONG UNIV
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