高强沥青混凝土的低温性能研究

研究生：李长征

指导教师：郭忠印教授

一九九六年十二月

摘要

本文是在现有环氧沥青混凝土研究成果的基础上，对其低温性能进行进一步的研究、改善和评价。其中，对影响环氧沥青混凝土低温性能的因素，主要是材料本身的因素进行了分析。对低温收缩裂缝、温度应力疲劳裂缝等路面低温主要损害现象也进行了深人的分析，并以此为基础，提出了评价环氧沥青混凝土低温性能的试验方法。本文还进一步分析研究了其改性机理和配制原理，并在此基础上进行材料选择和通过初期试验确定材料的配比组成。最后，在大量试验的基础上，通过对试验数据的理论分析和比较，并结合有关理论，对这种改性沥青混凝土的低温性能进行评价。

关键词：改性沥青，低温缩裂，应力松驰，环氧树脂，温度应力，介质，环氧沥青混凝土，环氧树脂固化剂，松驰劲度模量

ABSTRACT

Based on the  current research achievements, the advanced research and evaluation of the  low temperature propertion of the epoxy asphalt concrete are studied in  detail in this paper. Factors that influence low temperature properties of  asphalt concrete，mainly  material factors，are  studied. This paper also studied pavement distress，mainly low temperature  cracking and thermal fatigue cracking, and based on that, a number of test  methods are used to study the low temperature propertion of the epoxy asphalt  concrete．The  preparation principle and the interaction between modifiers and asphalt are  studied to select material required. Finally, based on much test data and  theoretic al analysis, this paper evaluates the low temperature propertion of  the epoxy asphalt concrete.

Key words：Modified asphalt，Epoxy Resin，Epoxy Asphalt Concrete，Low Temperature Cracking ， Thermal Stress，Epoxy Resin Hardener，Stress Relaxation，Relaxation Stiffness Modules，Extender.