Haze-reducing coating of bituminous pavement

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 takes reducing smog as the main purpose and is applied to urban roads, so that it can absorb and degrade PM2.5 particulate matter in automobile exhaust to a certain extent, To reduce urban smog. Background technique [0002] With the gradual deterioration of air quality, the occurrence of haze weather is becoming more and more frequent. They invade the human respiratory tract and lung lobes when people are unprepared, thereby 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, the haze weather also increases the risk of driving. It is not uncommon for dozens of vehicles to collide with each other in series due to the haze weather, resulting in heavy losses. Therefore, for peo...

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

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