冲击压实后旧水泥砼路面回弹模量的现场试验

为了评估应用冲击压实技术处理后旧水泥砼路面的承载能力，为加铺层的设计提供计算参数参考值，必须进行回弹模量现场试验的研究．文中在分析利用弯沉法测定、评价冲击压实破裂稳固后旧水泥砼路面所存在问题的基础上，阐述了承载板测定方法的原理及适用性；通过对大量实测承载板数据进行分析，获得了冲击压实处理后旧水泥砼板及板下基层回弹模量的量值范围及变化规律，用来评价路面的残余承载能力，并可作为加铺层设计的计算参数参考值．文中还论证了冲击压实技术在处理旧水泥砼路面时的力学效能．

Field Test for the Resilient Modulus of Existing Cement Concrete Pavement with Impact Compaction

In order to evaluate the bearing capacity of the existing cement concrete pavement with impact compaction and recommend input parameters for the design of overlay pavement structure, it is necessary to conduct field test for the resilient modulus of the compacted pavement. In this paper, the principle and applicability of the bearing plate test was discussed based on the analysis of the problems existing in the deflection measurement and the evaluation of the existing cement concrete pavement with impact compaction and cracking-seating. Then, by analyzing abundant testing data of the bearing plate, the magnitude range and the variation of the resilient modulus for the existing cement concrete slabs and its base course with impact compaction were obtained. The analytical results can be used to evaluate the remaining bearing capacity of the pavements and can also be used as input parameters for the design of the overlay pavement structure. The mechanical efficiency of the impact compaction technology in the treatment of the existing cement concrete pavement was finally demonstrated.