Dust-suppression and haze-reduction bituminous mixture and preparation method thereof

Abstract

The invention discloses a dust-suppression and haze-reduction bituminous mixture which is a composite material and comprises mineral aggregate and dust-suppression and haze-reduction asphalt, wherein the dust-suppression and haze-reduction asphalt comprises matrix asphalt and a dust-suppression and a haze-reduction asphalt modifier; the dust-suppression and haze-reduction asphalt modifier comprises a dust-suppression component and an anti-stripping component; the dust-suppression component comprises one or more of calcium chloride, ferric chloride, aluminium chloride, calcium oxalate and potassium oxalate; the anti-stripping component comprises one or more of calcium lignosulphonate, sodium lignosulphonate and petroleum resin. The invention further discloses a preparation method of the dust-suppression and haze-reduction bituminous mixture. The preparation method comprises the following steps: preparing the dust-suppression and haze-reduction asphalt and mixing and stirring the dust-suppression and haze-reduction asphalt and mineral aggregate at certain temperature. The dust-suppression and haze-reduction bituminous mixture can absorb moisture in air and forms a water film on a road surface to increase moisture content of dust, so that the dust cannot be raised by passing vehicles easily, and the dual effects of dust-suppression and haze-reduction and water conservation are realized.

Description

technical field [0001] The invention belongs to the technical field of asphalt roads and environmental engineering, and relates to an asphalt mixture and a preparation method thereof, in particular to an asphalt mixture for dust suppression and haze reduction and a preparation method thereof. Background technique [0002] In recent years, fog and haze have occurred frequently in my country's Beijing-Tianjin-Hebei region and North China. Many cities will encounter large-scale persistent fog and haze in autumn and winter, which will seriously affect people's normal travel and daily life. The problem of air pollution has attracted widespread attention at home and abroad. Studies have shown that some harmful and toxic substances in the atmosphere can cause irreversible damage to human physiological functions and seriously affect people's physical and mental health. Therefore, it is necessary to control smog to protect the environment. imminent. In some large urban environments,...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems existing in the prior art, the present invention provides a dust-suppressing and haze-reducing asphalt mixture. The additive is directly added to the base asphalt to form a dust-suppressing and haze-reducing asphalt, and then the dust-suppressing and haze-reducing asphalt is added to mineral aggregates to form a dust-suppressing