Research and Application of AC-20 Modified Ratio with Foamed Asphalt Mixture
Journal Title: 河南科技大学学报（自然科学版） - Year 2018, Vol 39, Issue 1
Abstract
The AC-20 modified foam asphalt mixture ratio was studied with a highway project.The optimum foaming condition of asphalt was determined by measuring the physical index of asphalt foaming.The gradation design of mineral aggregate was made by step filling method, and the optimum asphalt aggregate ratio was determined by Marshall test.The experimenta on pavement performance of warm mix asphalt and hot mix asphalt was carried out under the same volume parameter.The construction compaction performance of foamed asphalt mixture was studied by application of the designed mixture ratio in the intermediate surface layer of the contrast test section.Economic and environmental benefits were analyzed.The results show that AC-20 modified foam asphalt mixture is molded at low production temperature with stronger rutting resistance.The water stability, low temperature crack resistance, water permeability and construction compactness are basically the same as hot mix modified asphalt mixture.
Authors and Affiliations
Kejia LIU, Hongyu XU, Bin LIANG, Hongsheng WU
Keywords
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