摘要
Abstract
To compare the effects of DBDPO/Sb2O3,APP/PER,and ATH flame retardants on the properties of SBS-modified asphalt and its mixtures,the study initially analyzed the flame retardancy and conventional properties of the three flame-retarded SBS-modified asphalts with various flame retardant dosages(3％,6％,9％,12％,15％).Subsequently,using SBS-modified asphalt mixtures as a control group,a series of laboratory tests were conducted to systematically evaluate the flame retardancy and road performance of the three flame-retarded asphalt mixtures.The results indicated that DBDPO/Sb2O3 provided the most effective flame retardancy for SBS-modified asphalt,while ATH significantly reduced the smoke emission level.All three flame retardants increased the viscosity and high-temperature stability of the asphalt to varying degree but compromised its low-temperature flexibility.In the mixture tests,ATH demonstrated superior flame-retardancy,smoke suppression,and high-temperature stability.The intumescent flame retardancy APP/PER has the least impact on low temperature properties,and the halogenated DBDPO/Sb2O3 has the smallest effect on the water stability of the asphalt mixtures.关键词
隧道工程/沥青混合料/阻燃性能/路用性能Key words
tunnel engineering/asphalt mixture/flame retardancy/road performance分类
交通工程
