Application Of Sbs Modified Asphalt Sma Pavement In The Toll Plaza

At present, two forms of toll-square pavementæ¢'ommon bitumen concrete and cement concrete are mainly adopted in Liaoning Province. But after being used for many years, they have revealed diverse weaknesses. It is difficult for us to solve the following problems that exist in the common bitumen concrete pavement, such as the impact of the tracks at high temperature, the crazes at low temperature, water breakage, attenuation of surface function, and so on. Though cement concrete has the qualities of high strength and preferable antislip, after being used in a long time, its surface is easily dilapidated and many other disadvantages appear, such as erosion, cavitation, rupture and so on. In that case, it will feel bad to drive on it. What' s more, it is difficult to maintain after being damaged.Having analyzed the weakness of the two forms of pavement, we bring forward a subject on the application of SBS modifier bitumen-stone matrix asphalt, considering the characters of the toll-square in Liaoning Province.After analyzing the data and results of the testing highway in many sides like function index, physical condition, working techniques and project technique economic analysis, we have drawn a conclusion that it is feasible to adopt SBS modifier bitumen-stone matrix asphalt pavement in toll-square. This form of pavement has established the typical framework of toll-square pavement.