Combining with the reconstruction project of old cement concrete pavement of Xiangtan - Leiyang expressway, aiming at the 3 kinds of overlaying method commonly used in China at present, i. e. , CRC ＋ AC composite structure, paving asphalt surface directly and paving asphalt surface after rubblization, we discussed the design methods of overlaying on old pavement in current specifications, pointed out the flaws and put forward the improvement measures. The result shows that （ 1 ） the comprehensive stress of CRC ＋ AC composite structure is ve...
