A kind of hot mix asphalt pavement smoke suppression agent and preparation method of smoke suppression asphalt

Abstract

The invention discloses a hot mix asphalt pavement smoke suppressant, comprising the following components in percentage by weight: 7%-9% of a warm mixing agent and 91%-93% of aluminium hydroxide subjected to surface modification treatment. The invention also discloses a preparation method of smoke-suppressing asphalt. The method comprises the following steps: a) heating asphalt to 100-130 DEG C, and then adding the warm mixing agent in the smoke suppressant according to the ratio in claim 1, and stirring until the warm mixing agent is uniform; and b) adding the aluminium hydroxide subjected to surface modification treatment, and stirring until the aluminium hydroxide is uniform, wherein the percentage of the asphalt is 95%-97%, and the percentage of the smoke suppressant is 3%-5%. According to the smoke suppressant disclosed by the invention, release of asphalt smoke in the construction process of a hot mix asphalt pavement can be obviously reduced, the mixing temperature of the smoke suppressant is low, the construction and ecological environments are greatly improved, the physical health of constructors is protected, the smoke suppressant has significant social benefits and environmental protection benefits, meanwhile, energy conservation can also be achieved, asphalt ageing is relieved, the pavement performances such as the integrality, the strength and the durability of the asphalt pavement are improved, and the smoke suppressant has obvious technical and economic benefits.

Description

technical field [0001] The invention relates to a smoke suppressant for hot-mix asphalt pavement, and also relates to a method for preparing smoke suppressant asphalt by using the smoke suppressant for asphalt pavement. Background technique [0002] Due to the advantages of comfortable driving, low noise, fast open traffic, and convenient maintenance, asphalt pavement is widely used in high-grade highways in my country. With the rapid development of my country's high-grade highway construction, the scale and quantity of asphalt pavement are expanding day by day. At present, the construction of asphalt pavement mainly adopts the hot mixing method, that is, firstly, the raw materials such as asphalt, sand aggregate, and mineral powder are preheated to a higher temperature (above 160°C) for mixing, and then the evenly mixed mixture is mixed at a certain temperature. paving and rolling at temperature. The hot mix method is characterized by using high temperature to reduce the ...

AI Technical Summary

Problems solved by technology

At present, there are many brands of warm mix agents on the market, but the effects of use are different.

[0003] The paper published by Niu Ling "Application of Warm Mix Agent and Flame Retardant in Dantong Expressway Tunnel Pavement Surface Layer SMA Asphalt Mixture" (Northern Traffic Phase II), discloses the mixed use of warm mix agent and flame retardant On the expressway pavement, it effectively solves the environmental protection problems in the construction process, and the smoke suppression effect is also good. However, the flame retardant in this paper is APFR silicon-aluminum series flame retardant, which is a kind of flame retardant that uses phosphorus, nitrogen, magnesium, and A mixed flame retardant made of multi-component compounds such as aluminum, the preparation process is complicated and the cost is high

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