Asphalt pavement haze reduction coating

Abstract

The invention discloses a haze-reducing coating of a bituminous pavement. The haze-reducing coating comprises the following components in parts by mass: 1 part of nano-titanium dioxide, 1-5 parts of active aluminum oxide, 7-8 parts of epoxy resin, 2-3 parts of a curing agent and 2-4 parts of an assistant, wherein the curing agent is a mixture of a modified fatty amine liquid curing agent HTS-4512 and a special composite epoxy curing agent HTC-101 based on a mass ratio of (2-4) to 1; the assistant is a mixture of a defoamer and carborundum or carbon black based on a mass ratio of (1 to 2) to (4 to 1). According to the haze-reducing coating, the synergistic effect of active aluminum oxide and nano-titanium dioxide is used; the obtained haze-reducing coating not only is good in water resistance, slip resistance and environmental friendliness but also can degrade harmful gas causing secondary particulate pollution in automobile exhaust and well adsorb PM2.5 particles in the automobile exhaust to achieve a relatively good haze-reducing effect; a test shows that the optimal haze-reducing efficiency of the coating on the PM2.5 particles can reach 41.2 microgram / m<3>.min.

Description

technical field [0001] The invention belongs to the technical field of asphalt pavement, and in particular relates to an asphalt pavement coating, which is applied to urban roads for the main purpose of reducing smog, so that it can absorb and degrade PM2.5 particles in automobile exhaust to a certain extent. Thereby reducing urban smog. Background technique [0002] With the gradual deterioration of air quality, the occurrence frequency of smog weather phenomenon is getting higher and higher. They invade the human respiratory tract and lung lobes when people are unprepared, causing respiratory system diseases, cardiovascular system diseases, etc., and they are in this environment for a long time It can also induce lung cancer, myocardial ischemia and injury. In addition, smoggy weather also increases the risk of driving. Serial rear-end accidents of dozens of vehicles caused by smoggy weather are not uncommon, causing heavy losses. Therefore, for people's health and drivi...

AI Technical Summary

Problems solved by technology

However, the titanium dioxide asphalt mixture only plays a catalytic role on the pavement, resulting in waste of nano titanium dioxide, and the haze reduction effect is not obvious, and the efficiency is low

In addition, the titanium dioxide photocatalysis of automobile exhaust is mainly to change the composition of the exhaust gas, that is, to degrade the harmful gases in the automobile exhaust that cause secondary particle pollution, but it cannot directly degrade or absorb the particulate matter emitted by the automobile exhaust. Among the components of the smog, PM2. 5 The harm to the human body is the greatest. Compared with the coarser atmospheric particles, PM2.5 has a small particle size, is rich in a large amount of toxic and harmful substances, and has a long residence time in the atmosphere and a long transportation distance, so it is harmful to human health. and air quality have a greater impact on

Images