A low-carbon environment-friendly modified asphalt pavement material and its construction mixing method

Abstract

The invention discloses a low-carbon and environment-friendly modified asphalt pavement material. The low-carbon and environment-friendly modified asphalt pavement material comprises the following raw materials by mass percent: 90 to 97% of mineral aggregate, 2.5 to 5% of asphalt, 0.1 to 4% of pyrite, 0.1 to 4% of cassiterite and 0.01 to 0.06% of additive, wherein the sum of the raw materials in mass percent is of 100%; the pyrite is pyrite powder; the cassiterite is cassiterite powder; the additive is a coupling agent like a silane coupling agent and a titanate coupling agent. The asphalt pavement material shows obvious temperature self-regulating function, has good effects on hot mixing, emission reduction, air purification, flame retardance and smoke suppression, also has high pavement performance and high economic benefit and social benefit, and is beneficial for the construction of 'resource-saving' and 'environment-friendly' roads in China.

Description

technical field [0001] The invention belongs to the technical field of road materials, and in particular relates to a low-carbon and environment-friendly modified asphalt pavement material and a construction mixing method thereof. Background technique [0002] During the "Twelfth Five-Year Plan" period, road construction will pay more attention to resource conservation, environmental friendliness, energy conservation and emission reduction. During the construction stage of asphalt pavement, a large amount of gas and asphalt smoke are released during the mixing of hot-mix asphalt mixture, which seriously pollutes the air quality and endangers the health of construction workers; More than 90% of the disease is caused by it, and the loss caused by it reaches tens of billions of yuan every year. The high temperature phenomenon of the road surface in summer will also aggravate the urban "heat island effect"; The space is relatively closed, and there are huge fire safety hazards ...

AI Technical Summary

Problems solved by technology

During the construction stage of asphalt pavement, a large amount of gas and asphalt smoke are released during the mixing of hot-mix asphalt mixture, which seriously pollutes the air quality and endangers the health of construction workers; More than 90% of the disease is caused by the annual loss of tens of billions of yuan. The high temperature phenomenon of the road surface in summer will also aggravate the urban "heat island effect". The space is relatively closed, and there are huge fire safety hazards inside. In 2012 alone, the relevant economic losses have exceeded 100 million; at the same time, because the air in the tunnel is not easy to lose, automobile exhaust has become the main source of pollution inside the tunnel.

Many of the above problems seriously pollute the environment, aggravate the urban "heat island effect", endanger traffic safety, affect the service life of road surfaces, and bring huge economic losses. They have become the bottleneck restricting the development of low-carbon and green transportation system in my country.

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