摘要
利用PEG/活性炭复合固-固相变材料对沥青进行改性,制备出相变材料改性沥青。对不同配比的相变材料改性沥青进行老化、高低温交变等处理,观察其外观,并利用电子拉力试验机和热机械分析仪(TMA)测试改性沥青的延展性、软化点等性能。研究表明,当PEG/活性炭相变材料含量为20%时相变材料改性沥青的延展性最好,相变材料含量为15%~25%时,改性沥青的软化点明显提高。
Phase change material modified asphalt is prepared by using PEG/activated carbon composite solid-solid phase change materials for asphalt modification.Phase change materials modified asphalt with different ratios are aged and treaded alterably at high or low temperature,and then its appearance is observed.The properties of the modified asphalt,such as ductility, softening point,etc.,are tested by using electronic tensile testing machine and thermal mechanical analyzer.Experiments show that when the content of PEG/activated carbon phase change material is 20%,the ductility of modified asphalt is the best;when the content of phase change material is 15%to 20%,the softening point of modified asphalt is obviously improved.
出处
《土木建筑与环境工程》
CSCD
北大核心
2013年第S2期111-113,128,共4页
Journal of Civil,Architectural & Environment Engineering
关键词
PEG/活性炭
相变材料
改性沥青
延展性
软化点
PEG/activated carbon
phase change materials
modified asphalt
ductility
softening point
