探究温湿度环境差异下沥青混凝土动态力学性能的影响  

Effect of dynamic mechanical properties of asphalt concrete under the difference of temperature and humidity environment

作　　者：杨建锋 吴磊 张芳玲 YANG Jianfeng;WU Lei;ZHANG Fangling(Shaanxi Road and Bridge Group Pavement Engineering Co.,Ltd.,Xi’an 710054,China)

机构地区：[1]陕西路桥集团路面工程有限公司,陕西西安710054

出　　处：《粘接》2024年第12期80-83,共4页Adhesion

摘　　要：针对不同温湿度环境下沥青混凝土动态力学性能的变化情况,以沥青混凝土为试验原材料,以抗压强度和劈裂抗拉强度作为性能测试指标,探究沥青混凝土力学性能在不同温湿度条件下的变化规律。试验结果表明,适当提高环境温度能够增大沥青混凝土的早期抗压强度,而当温度超过20℃时,沥青混凝土的抗压强度逐渐降低;当环境湿度为70%时,沥青混凝土抗压强度可达到最大值;温度与沥青混凝土劈裂抗拉强度呈现明显的正相关关系,且当环境温度变化在-60~20℃时,试样的劈裂抗拉强度随温度的升高而增大;环境湿度为50%时能够使沥青混凝土的劈裂抗拉强度获得最佳值。In view of the changes of the dynamic mechanical properties of asphalt concrete under different temperature and humidity environments,asphalt concrete was used as the test raw material,and the compressive strength and splitting tensile strength were used as the performance test indexes to explore the variation law of the mechanical properties of asphalt concrete under different temperature and humidity conditions.The test results showed that that the early compressive strength of asphalt concrete could be increased by increasing the ambient temperature appropriately,and the compressive strength of asphalt concrete gradually decreased when the temperature exceeded 20℃.When the environmental humidity was 70%,the compressive strength of asphalt concrete could reach its maximum value.There was an obvious positive correlation between temperature and the splitting tensile strength of asphalt concrete,and when the ambient temperature changed at-60~20℃,the splitting tensile strength of the specimen increased with the increase of temperature.When the ambient humidity was 50%,the splitting tensile strength of asphalt concrete could obtain the best value.

关 键 词：温湿度环境差异 沥青混凝土 动态力学性能 影响研究 

分 类 号：TQ177.63[化学工程—硅酸盐工业] TU528[建筑科学—建筑技术科学]