Rubber powder compound modified hyperviscous asphalt for noise-reducing and water draining pavement

Abstract

The invention discloses rubber powder compound modified hyperviscous asphalt for a noise-reducing and water draining pavement. The asphalt is prepared from pavement petroleum asphalt, activated rubberpowder, a styrene thermoplastic elastomer, a stabilizer and a tackifier. The preparation method comprises the following steps: adding the tackifier into the preheated pavement petroleum asphalt to besheared for 30-60 min; then adding the activated rubber powder and the styrene thermoplastic elastomer to be further sheared; then adding the stabilizer to be sheared for 10-30 min; and developing the material for 60-150 min to obtain the rubber powder compound modified hyperviscous asphalt for the noise-reducing and water draining pavement. The modified hyperviscous asphalt provided by the invention is high in dynamic viscosity, high in softening point, relatively good in sticky toughness and relatively small in flyoff loss and leakage loss, detection results such as needle penetration, ductility and dynamic viscosity can reach a code requirement, and the water damage preventing performance and high temperature anti-rut performance can be improved obviously. The rubber powder compound modified hyperviscous asphalt also has the advantages of being high in low temperature anti-crack ability, long in service life, low in cost and the like, is high in cost performance, and has remarkableengineering application value.

Description

technical field [0001] The invention relates to the field of pavement materials for road engineering, in particular to a rubber powder compound modified high-viscosity asphalt for noise reduction and drainage pavement and a preparation method thereof. Background technique [0002] In recent years, the phenomenon of "waterlogging in light rain and waterlogging in heavy rain" has often appeared in major cities in my country, and it is imminent to effectively solve the problems of urban flood disasters and water pollution. At present, sponge city construction is an important way to solve problems such as comprehensive utilization of rainwater and surface water resources, urban drainage and flood control, and ecological environment protection in urban development, and to achieve low-impact development. development is of great significance. Among them, drainage pavement is the main component of road construction in sponge city. [0003] The noise-reducing drainage pavement in t...

AI Technical Summary

Problems solved by technology

However, according to the current domestic application of noise reduction and drainage pavement, the main problems are: (1) high-viscosity particles are expensive, resulting in a substantial increase in material costs; (2) insufficient viscosity and toughness of asphalt binder, resulting in the anti-impact scattering performance of the pavement Poor, peeling, potholes and other diseases are common after opening to traffic, which affect the performance of the road surface

However, at present, the harmless utilization rate of waste tires is less than 50%. Some of them are used for retreading, producing reclaimed rubber and rubber powder, as fuel, etc.; Secondary pollution, but also caused a serious waste of rubber resources

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