摘要
为分析低温环境下公路的性能特点,文中开展低温劈裂试验、低温弯曲试验以及低温蠕变试验,对3种沥青混合料的劈裂强度、弯拉强度以及蠕变性能进行分析,并选取SMA-13沥青混合料进行对比试验,以此分析出低温性能更佳的沥青混合料。结果表明,SMA-13沥青混合料低温性能较强,15℃为SMA-13弯拉强度和AC-13弯拉强度的性能分界点;低温蠕变速率不能作为混合料抗裂性能的重要指标;SMA-13环氧沥青混合料的劈裂强度和弯拉强度比改性沥青材料SMA-13高,在实际应用中,环氧沥青混合料应多加推广。
.To analyze the performance characteristics of highway under olw temperature environment,low temperature splitting test,low temperature bending test and low temperature creep test,the three kinds of asphalt mixture cracking strength,bending strength and creep performance analysis,and select SMA-13 asphalt mixture comparsion test,to analyze the low temperature performance of bettera sphalt mixture.The results show that SMA-13 asphalt mixture has 1 low temperature;15℃is the performance dividing point of SMA-13 bending strength and AC-13 bending strength;low temperature creep rate cannot be used as an important index of crack resistance;sptli strength and bending strength of SMA-13 epoxy asphalt mixture are highe rthan those of SMA-modified bitumen 13,epoxy asphalt mixture hsould be promoted in practical application.
作者
林丽美
Lin Limei(Fujian Huafu Engineering Testing Co.Ltd.,Quanzhou,Fujian 362000)
出处
《江西建材》
2023年第6期36-38,共3页
Jiangxi Building Materials
关键词
沥青
低温试验
蠕变变形
Asphalt
Low temperature test
Creep deformation
作者简介
林丽美(1978-),女,福建安溪人,本科,工程师,主要研究方向为工程检测。
