摘要
利用残留针入度比和质量变化作为评价标准,对布敦岩沥青改性沥青的抗紫外老化性能进行了试验研究。结果表明,热老化和紫外老化后,10%掺量的BRA改性沥青的残留针入度比均比A-110基质沥青分别提高26.7%和29.9%;A-110和A-110+10%BRA两种沥青质量均有损失,但BRA改性沥青的损失率比A-110基质沥青要小18.8%;紫外老化后,A-110和A-110+10%BRA两种沥青质量均有增加,但BRA改性沥青的增长率比A-110基质沥青要小69.9%。布敦岩沥青能够有效提高沥青的抗紫外老化性能。
The anti-ultraviolet ageing performance of BRA modified asphalt is studied by using the residual penetration ratio and quality change as the evaluation criteria in this paper. The results showed that： after thermal aging and ultraviolet radiation aging, residual penetration ratio of 10% BRA modified asphalt increased by 26.7% and 29.9% than A-110. The quality of A-110 and A-110 ＋ 10% BRA are loss after aging, but the loss rate of BRA modified asphalt is 18.8% less than A-110; after ultraviolet aging, the quality of the two kinds of asphalt A-110 and A-110 ＋ 10% BRA are increased, but the growth rate of BRA modified asphalt is 69.9% less than A-110. Buton rock asphalt can effectively improve the anti-ultraviolet ageing performance of asphalt.
出处
《施工技术》
CAS
北大核心
2014年第13期145-147,共3页
Construction Technology
基金
北京市政路桥科技创新项目(科-j-11014)
关键词
公路工程
沥青
布敦岩沥青
针入度
抗紫外老化性能
road construction
asphalt
Buton rock asphalt
penetration
anti-ultraviolet ageing performance
