Demulsifying slow breaking and quick setting modified emulsified asphalt by microwave heating and preparation method thereof

A slow-cracking, fast-setting, microwave heating technology, applied in building components, building insulation materials, buildings, etc., can solve the problems of emulsified asphalt and stone can not be mixed evenly, poor storage stability, affecting project quality and other problems, and achieve excellent slow-cracking performance. , strong emulsifying ability, wide adaptability effect

Inactive Publication Date: 2012-09-19
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the storage stability of the modified emulsified asphalt used in the slurry seal layer and micro-surfacing on the market is poor, resulting in the segregation of the asphalt emulsion, which leads to the difference in the ratio of asphalt to the pavement during construction; If the demulsification is too fast, the mixture may be scrapped, and if it is too slow, it will delay the opening time of traffic; the emulsified asphalt has great limitations on the comp

Method used

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  • Demulsifying slow breaking and quick setting modified emulsified asphalt by microwave heating and preparation method thereof
  • Demulsifying slow breaking and quick setting modified emulsified asphalt by microwave heating and preparation method thereof

Examples

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Effect test

Embodiment 1

[0029] Heat 600g of Heavy Jiao No. 90 asphalt to 140°C and keep it warm for later use. Dissolve 10g of polyvinyl alcohol in 50g of water completely, pour 10g of sodium bentonite into polyvinyl alcohol aqueous solution to expand and age for 24 hours, and weigh 70g of WTW three Dissolve the compound compound emulsifier (the self-made ternary compound emulsifier contains about 21g of water) in 260°C water, then stir the prepared 70g compound stabilizer and WTW ternary compound emulsifier evenly, and heat the emulsifier aqueous solution to 60°C . The prepared base asphalt and emulsifier aqueous solution are added to the colloid mill at the same time as required, and the grinding can become the slow-cracking and fast-setting epoxy resin modified emulsified asphalt 1# for microwave heating and demulsification.

Embodiment 2

[0031] Heat 650g of Heavy Jiao No. 90 asphalt to 140°C and keep it warm for later use. Dissolve 10g of polyvinyl alcohol in 50g of water completely, pour 10g of sodium bentonite into the aqueous solution of polyvinyl alcohol to expand and age for 24 hours before use. Weigh 60g of MTM ternary compound emulsifier (the self-made ternary compound emulsifier contains about 18g of water) and dissolve it in 220g of water, then stir the prepared 70g of compound stabilizer and MTM ternary compound emulsion evenly, and heat the emulsifier The aqueous solution is brought to 60°C, and the prepared base asphalt and emulsifier aqueous solution are added to the colloid mill at the same time as required, and the grinding can become the slow-cracking and fast-setting epoxy resin modified emulsified asphalt 2# for microwave heating and demulsification.

Embodiment 3

[0033] Heat 550g of Heavy Jiao No. 90 asphalt to 140°C and keep it warm for later use. Dissolve 10g of polyvinyl alcohol in 50g of water completely, pour 10g of sodium bentonite into the aqueous solution of polyvinyl alcohol to expand and age for 24 hours before use. Weigh 80g of MTM ternary compound emulsifier (the self-made ternary compound emulsifier contains about 24g of water) and dissolve it in 300g of water, then stir the prepared 70g of compound stabilizer and MTM ternary compound emulsion evenly, and heat the emulsifier The aqueous solution is brought to 60°C, and the prepared base asphalt and emulsifier aqueous solution are added to the colloid mill at the same time as required, and the grinding can become the slow-cracking and fast-setting epoxy resin modified emulsified asphalt 3# for microwave heating and demulsification.

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Abstract

The invention provides demulsifying slow breaking and quick setting modified emulsified asphalt by microwave heating and a preparation method thereof, adopts the emulsified asphalt emulsion by asphalt and a cation-anion-nonionic ternary compound emulsifier according to a certain ratio under an effect of high shear force, and solves the problem that conventional slow breaking and quick setting emulsified asphalt is uncontrollable in condensing speed and poor in adaptation of temperature and stone materials. The invention provides the emulsified asphalt which can be stably stored for a long time at normal temperature, is free from layered separation and demulsification, prevents demulsifying and condensing phenomena after being mixed with aggregates, and can demulsify and condense quickly when being heated to be at about 70 DEG C by microwaves, and the enough construction time is provided. The asphalt emulsion prepared by using the method is smooth and uniform in particles, and the enough mixing time in a construction application of slurry seal can be provided. According to the emulsified asphalt and the preparation method, the condensing speed can be controlled. The emulsified asphalt is generally adaptive to the stone materials, further the construction season is prolonged and the construction quality is improved.

Description

technical field [0001] The invention belongs to the technical field of traffic pavement materials, and in particular relates to slow-cracking and fast-setting modified emulsified asphalt which is demulsified by microwave heating and a preparation method thereof. Background technique [0002] Emulsified asphalt can be constructed at room temperature, save energy and asphalt, and can protect the environment and ensure the health of construction workers, which is in line with the national energy conservation and emission reduction policy. Therefore, its application has involved many fields. Emulsified asphalt slurry seal layer is an important direction of emulsified asphalt application. This technology is a new road maintenance technology imported from abroad in the middle of the 1980s. It has the advantages of good workability, fast construction, strong adhesion, and no pollution. The slow-cracking and fast-setting modified emulsified asphalt sealer technology gives full play...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L63/00C08K3/34C08J3/03
Inventor 艾涛赵鹏王振军
Owner CHANGAN UNIV
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