复合改性纤维路用性能与应用效果分析

Discussion about pavement performance of modifi ed asphalt

引言 近年来，纤维加强沥青路面以高低温性能优异、施工技术方便的特点已受到了普遍的关注，其中以SMA路面结构为代表的纤维沥青混凝土路面在国内的应用比较广泛。我国纤维沥青混合料应用研究起步较晚，随着SMA路面结构的引进推广，才引进纤维沥青产品。国产纤维从开始的模仿进口纤维，发展到独立自主研发；从单一纤维，发展到复合改性纤维。

In recent years,the fiber reinforced asphalt pavement,in particular the SMA surface pavement,receives high attention with the advantages of high temperature bending strength and easy construction. China started late in the research of mixed fiber asphalt and did not introduce the fiber asphalt products until the dissemination of SMA pavements. The national-made fi vers have developed from just copying the imported fi bers to innovative researches and development,and from single fi ber to composite modified fibers. The composite modified fiver combines the advantages of different fibers and has higher price ratio compared with single f iber,which is the development trend of f iber materials currently.