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反射裂缝的防治是旧路改造需要解决的技术难题之一。LSPM是一种新型的沥青混合料。本文简要介绍了LSPM的概念,应用断裂力学有限元力学分析了LSPM防治旧路面反射裂缝机理,从材料与结构组成设计、施工工艺、质量控制、质量评定等方面提出LSPM施工要点,并对LSPM在旧路改造中的工程应用实例和效果进行了阐述。
The prevention and treatment of reflection cracks is one of the technical problems to be solved in the reconstruction of old roads. LSPM is a new type of asphalt mixture. In this paper, the concept of LSPM is briefly introduced. The mechanism of LSPM prevention and treatment of reflection cracking of old pavement is analyzed mechanics using fracture mechanics finite element method. The main points of LSPM construction are put forward from aspects of material and structure design, construction technology, quality control and quality assessment. The examples and effects of engineering application in the reconstruction of the old road are described.