冲击压实破碎旧水泥混凝土路面施工技术试验研究

对316国道福州段冲击压实处理旧水泥混凝土路面板施工试验段进行了现场监测,监测内容包括路面沉降观测、裂缝发展观测、弯沉观测、回弹模量检测,取芯检测,落锤弯沉仪(FW D)路面评价等,结合监测数据,探讨了冲击压实施工时路基路面性状变化规律,探讨了路面性状变化与施工工艺之间的关系,以及路面破碎程度对路面加铺设计的影响等,并依据研究结论提出了推荐施工控制指标和评价方法,为冲击压实处理旧水泥混凝土路面技术的应用提供了技术参考。

Test Resaerch on Control Standard of Rehabilitating Cement Concrete Pavement with Impact Compaction Technology

The test section of rehabilitating cement concrete pavement of the 316 national highway processing with impact compaction technology is monitored in-situ firstly.The monitoring contents include pavement settlement with compaction times, the developing of cracks,deflections,modulus of resilience,coring of pavement after cracked etc..According the monitoring results,the character developing regular of cement concrete pavement under compaction and the relationship between character developing regular and construction methods are studied,the influence of cracking size on the overlay design is also discussed.Moreover,a series of construction standards and evaluating methods for the impact compaction based on the research results are proposed.The results are helpful to the impact compaction practice on site and to the study on the mechanism of cracking and seating brought with impact compaction.