The Application And Research On Rubber Asphalt Concrete In Municipal Road Reconstruction In Wenzhou

Because of the ride comfort of asphalt pavement, noise is small, the road is short construction period and other advantages to occupy our country the current road pavement more than 90% of the share, but because of the thermal properties of asphalt material, easy appear softening under high temperature, low temperature cracking of asphalt pavement diseases, seriously affected the service life of the asphalt road surface and traffic capacity. Rubber asphalt mixture in recent years because of its good capability of resistance to high temperature deformation, the reflection crack resistance and environmental performance at home and abroad, it was successfully used in many places. Wenzhou has carried on the experimental paving are also part of the municipal roads, road performance is good, but not made of rubber asphalt mixture with the localization of systemic research.This article first to wenzhou municipal roads are used for the disease investigation, quantitative analysis, factorial classified the water damage is the main form of wenzhou municipal road asphalt pavement damage. And the water stability test, as the main index in the subsequent assessment of rubber asphalt mixture design, increases the immersion rutting test and assessment of two improved adhesion test.The next research on rubber asphalt production formula are analyzed. For rubber powder, powder fineness and dosage of matrix asphalt type design of three factors three levels orthogonal test and significance test, determine the degree of three factors on the quality of the rubber asphalt, rubber powder content is particularly significant; Powder fineness for general influence; Types of matrix asphalt to no effect. Rubber asphalt conditions determined the optimal ratio of rubber powder content is 25%, powder fineness is 60.Lastly, the AR-AC-13 and 14 in Australia rubber commonly used ordinary SMA asphalt mixture and wenzhou municipal road-13 asphalt mixture do indoor and high temperature performance and water stability performance contrast test, determine the AR-AC-13 rubber asphalt mixture is suitable for use in wenzhou region. And a municipal road test in wenzhou paving, the whole process of tracking verification, road use effect is good.