Novel environment-friendly asphalt concrete and construction method thereof

Abstract

The invention discloses a novel environment-friendly asphalt concrete. Each cubic meter of the novel environment-friendly asphalt concrete comprises 2o to 24 kg of waste milling and planing materials of asphalt, 80 to 120 kg of a glass fiber, 0.6 to 0.8 kg of SBS modified emulsified asphalt and 0.2 kg of an asphalt latex recovering agent. A construction method for the asphalt concrete comprises the following steps: successively sprinkling an SBS modified emulsified asphalt layer and spreading the glass fiber on the cleaned and dried surface of an old pavement and sprinkling the screened waste milling and planing materials of asphalt at the same time; and carrying out rolling after completion of the above-mentioned construction, wherein time for synchronous sprinkling construction to completion of rolling is controlled be 10 to 20 min. According to the invention, in preparation of the novel environment-friendly asphalt concrete, large batch of the waste milling and planing materials of asphalt are used, which is energy saving and environment-friendly; the formed new asphalt concrete is firmly bonded with a lower bearing layer, can prevent occurrence of asphalt surface course reflection cracks and pit slots, improves anti-cracking performance of an asphalt stress absorption layer and prolongs the service life of a pavement.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a novel environment-friendly asphalt concrete and a construction method thereof. Background technique [0002] Due to the small amount of old asphalt mixture used in China at present, most of the old asphalt mixture is discarded, which not only causes serious pollution to the surrounding environment, but also is a waste of resources. A large number of new stone materials need to be mined a large amount of ore, which will inevitably lead to serious ecological and environmental problems such as forest vegetation reduction and soil erosion. With the improvement of people's awareness of environmental protection, the rising price of asphalt resources and the increasing shortage of sand and gravel materials, the necessity and urgency of recycling old asphalt mixtures is very prominent. , The technical advantages of milling and planing recycled asphalt mixture are outstanding, reli...

AI Technical Summary

Problems solved by technology

The highways built successively after the 1990s have entered the period of major and medium repairs, and a large number of excavated and milled asphalt mixtures have been discarded. On the one hand, it causes environmental pollution. It is a waste of resources, and a large number of new stone materials are used. Mining stone mines will lead to the reduction of forest vegetation, soil erosion and other serious ecological environment damage.