摘要
安山岩集料棱角性丰富,难压实,属于中性集料,水稳定性差,给安山岩的级配设计和推广使用造成了困难。根据安山岩物理化学性质的特殊性,提出了掺配部分石灰岩细集料代替安山岩细集料方法来设计安山岩沥青混合料。采用该方法生产的安山岩沥青混合料,具有良好的压实性能和水稳定性。
In this paper, the pavement performance of asphalt mixture with andesites was studied, The andesite is hard to be compacted owing to rich aggregate angularity. Its moisture stability is poor because it belongs to neutral stone. Consequently, the gradation design and application is difficult in project. According to particularity of andesite physical and chemical property, the proposal of part of limestone replacing andesite fine aggregate is recommended. With the method, asphalt mixture with andesites has better compaction property and moisture stability.
出处
《建材世界》
2009年第6期5-7,共3页
The World of Building Materials
关键词
沥青混合料
压实性能
水稳定性
安山岩
石灰岩
asphalt mixture
compaction property
moisture stability
andesite
limestone
