论文部分内容阅读
目前我国大部分地区高等级公路、城市主干道通常会采用水泥稳定碎石作为道路基层使用材料。由于水泥稳定碎石基层(以下简称水稳基层)对水泥、集料、含水量及气温等要求较高,实际施工时常因工期限制,必须在夏季进行基层施工,而此季节施工的水稳碎石基层极易产生以干缩性裂缝为主的收缩裂缝,对道路使用寿命影响很大。本文通过对南京绿水湾北路工程水泥稳定碎石基层产生的裂缝进行分析,并结合现场实际情况提出有效的处理措施。
At present, most of the country’s high-grade highways, urban main roads are usually used cement stabilized gravel as the grassroots road use of materials. Due to the high requirements on cement, aggregates, water content and air temperature, the basic layer of cement stabilized gravel (hereinafter referred to as the water-stable base layer) often needs to be constructed in the grass during the summer due to the limitation of construction period, Stone base can easily produce shrinkage cracks mainly shrinkage cracks, the service life of roads have a great impact. Based on the analysis of the cracks produced by the cement stabilized macadam base in the construction of the Nanjing North Water Bay Project, the paper puts forward effective measures in combination with the actual situation in the field.