Laboratory investigation of performance of PEG/SiO2 phase change particles on asphalt mortar
He Lihong1,2, Wang Hao1,2, Yang Fan1,2, Zhu Hongzhou2
1.National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials,Chongqing Jiaotong University,Chongqing 400074; 2.College of Materials Science and Engineering,Chongqing Jiaotong University,Chongqing 400074
Abstract: Utilizing the characteristic of PCM which can absorb or release amounts of heat and kep temperature constant during phase transition,PEG/SiO2 was prepared by sol-gel method.Tests were carried out on asphalt mortar with different proportions of PEG/SiO2 replacing the mineral powder normally used.The analysis examined the penetration,the softening point and dynamic shear rheology to probe the effect of temperature on asphalt mortar,and high temperature rheological properties of phase particles after replacing mineral powder.Test results indicated that replacing mineral powder with PCM in certain proportions can effectively improve the high-temperature performance of asphalt mortar,but was not obvious in improving the normal temperature performance.
何丽红, 王浩, 杨帆, 朱洪洲. PEG/SiO2相变颗粒对沥青胶浆性能实验研究[J]. 化工新型材料, 2018, 46(8): 257-260.
He Lihong, Wang Hao, Yang Fan, Zhu Hongzhou. Laboratory investigation of performance of PEG/SiO2 phase change particles on asphalt mortar. New Chemical Materials, 2018, 46(8): 257-260.
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