Application of Waste Rubber Powder Modified Asphalt in Road Engineering
Based on a new high-speed test section in Sichuan Province,the waste rubber powder modified asphalt was applied to the upper layer AC-13 and the middle layer AC-20 of the test section,and the construction quality was controlled.After the construction,the road sur-face was tested on site.The practice shows that the paving effect of the test section is good.The average structural depth of AC-13 in the upper layer is reduced by 6%compared with the standard value.The mean standard deviation σ of the upper layer AC-13 and the middle layer AC-20 decreased by 53%and 43%,respectively,and the mean water permeability coefficient decreased by 74%and 63%,respectively,compared with the standard value.The overall road performance of the upper middle surface of the test section of modified asphalt pavement with waste rubber powder is good.
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