集料力学指标对沥青混合料高温性能的影响  

Influence of aggregate mechanical indicators on the high temperature performance of asphalt mixture

作　　者：刘生奎 Liu Shengkui(Qinghai Weiyuan Luqiao Communication Co.,Ltd.,Haidong 810599,China)

机构地区：[1]青海威远路桥有限责任公司,海东810599

出　　处：《青海交通科技》2023年第3期69-74,共6页Qinghai Transportation Science and Technology

基　　金：青海省交通运输厅科技项目(2023-03)。

摘　　要：集料是沥青混合料的重要组成部分,在工程实践中经常会因为集料的改变而导致沥青混合料的路用性能的变化。本文基于灰熵分析法,探究了集料不同指标对沥青混合料高温性能的影响程度,结果表明:磨光值、毛体积相对密度、吸水率、磨耗值对集料力学性能影响显著,针片状含量次之,压碎值影响最小,这对于研究和改善沥青混合料高温性能乃至为有耐高温要求沥青混合料设计具有重要的指导作用。Aggregates are an important component of asphalt mixtures and in engineering practice often lead to significant changes in the road properties of asphalt mixtures due to changes in the aggregates.This paper analyses the influence of different indicators on the high temperature performance of asphalt mixtures based on grey entropy analysis.The results show that the abrasion value,gross volume relative density,water absorption,and wear value have a significant influence on the mechanical properties of the aggregates,followed by the needle flake content,and the crushing value has the least influence.This is an important guideline for the study and improvement of the high temperature properties of asphalt mixtures and even for the design of asphalt mixtures with high temperature requirements.

关 键 词：道路工程 集料 沥青混合料 灰熵法 高温性能 

分 类 号：U414[交通运输工程—道路与铁道工程]