冷再生混合料的再生原理和微观结构分析

The Recycling Principle and Microstructure Analysis of Cold Recycling Mixture

从沥青结合料、矿质集料及旧基层材料等方面分别对旧料性质进行综合介绍,并分析水泥、二灰及水泥粉煤灰稳定再生混合料的反应机理,根据其微观结构对各项路用性能指标,包括强度与模量、收缩特性、水稳定性与冰冻稳定性以及疲劳特性等进行微观分析,以此探讨将其用作公路基层或底基层的可行性。

This paper makes a comprehensive analysis for the property of old materials from three aspects,namely,asphalt binders,mineral aggregate materials,and old road base materials. The reaction mechanisms of cement,lime-fly ash,and cement and fly-ash stable recycling mixture are respectively analyzed. According to the microstructure of cold recycling mixture,microanalyses are made for various road surface performance indexes of cold recycling mixture,including strength and modulus,shrinkage character,water stability,freezing stability,and fatigue property,to verify the feasibility of cold recycling mixture as road base or sub base.