A road surface preventive maintenance method for degrading automobile exhaust

Abstract

A road surface preventive maintenance method for degrading automobile exhaust, adding asphalt, fiber, modifier and titanium dioxide aqueous solution into a fiber-added synchronous crushed stone seal vehicle to pave the road surface; the fiber asphalt crushed stone seal layer Rolling: After paving, use a rubber-tyred road roller for rolling. Under the action of the road roller, the aggregate is embedded in asphalt, and the asphalt-coated aggregate reaches 1 / 2 to 2 / 3 of the aggregate height. The asphalt surface in between has a titanium dioxide film exposed to the air to complete the sealing layer on the fibrous asphalt gravel. In the invention, the titanium dioxide aqueous solution is sprayed between the asphalt layer and the aggregate layer to form a layer of titanium dioxide film, which will not reduce the skid resistance of the road surface. In the present invention, because the titanium dioxide is sprayed between the asphalt layer and the aggregate layer, it can degrade the exhaust gas of various vehicles very well, and the economic benefit is high, which overcomes the problem of adding nano-titanium dioxide to the mixture for direct mixing and paving the road surface in the prior art The problem of low efficiency in the degradation of exhaust gas.

Description

technical field [0001] The invention belongs to the technical field of asphalt pavement, and in particular relates to a road surface preventive maintenance method for degrading automobile exhaust. Background technique [0002] With the rapid development of science and technology, the number of automobiles is constantly increasing. While automobiles bring great convenience to people's transportation, the exhaust pollutants they produce seriously damage the natural environment on which human beings live. How to improve the environment on which humans live has become an urgent problem to be solved. Photocatalytic degradation of pollutants has gradually become a new topic in the treatment of industrial pollution due to its novelty, low energy consumption, and environmental friendliness. Nano-titanium dioxide is a new type of photocatalyst. Nano titanium dioxide has the characteristics of high activity, good stability, harmless to human body, long duration of action, many times ...

AI Technical Summary

Problems solved by technology

Surface coating for NOx, CO and SO 2 The rate of absorption and decomposition of toxic gases such as that of the direct mixing type is higher than that of the direct mixing type, but studies have shown that coating the surface with titanium dioxide film will reduce the anti-skid performance of the asphalt pavement and endanger driving safety.

Although the direct mixing method is easy to operate, some nano-titanium dioxide is dispersed inside the road surface and cannot be in contact with automobile exhaust, so it cannot fully exert its role in decomposing toxic gases

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