沥青路面摊铺均匀性评价方法试验研究

Experimental Study on Consistency Test Evaluation Method of Uniformity in Bituminous Pavement Paving

目的为了完善我国沥青路面建设中对路面摊铺均匀性进行评价的评价方法和评价手段.方法提出一致性检验评价法评价沥青路面摊铺均匀性,从沥青路面横、纵、竖向摊铺均匀性评价入手,采用无核密度仪和激光纹理仪两种无损检测手段评价路面横、纵向摊铺均匀性,运用取芯切片并结合数字图像处理方法评价路面竖向离析,在数据处理上,引入重复性标准偏差"Sr"、"SR"和一致性统计量"k"、"h"4个统计量及一致性统计量临界值"kcrit"和"hcrit"2个评定标准作为评价分析手段.结果"Sr"、"SR"值直观反映路面摊铺质量的差异,"k"、"h"、"kcrit"和"hcrit"值直观反映路面施工质量可接受水平.结论一致性检验评价法能全面有效的评价沥青路面摊铺质量的均匀性,能及时有效的反馈路面摊铺信息,并为指导后序生产提供有力的技术支持.

In order to perfect the evaluation means of paving uniformity of bituminous pavement in our country, this paper mentions the consistency test evaluation method firstly, and starting with evaluating transverse, lengthways and vertical paving uniformity of pavement, the transverse and lengthways paving uniformity of pavement is evaluated by using PQI and MTM, and vertical segregation of pavement is also evaluated by coring and sawing the core and using digital image processing. In data processing, the repeatability standard deviation ＂Sr＂and ＂SR＂ and the consistency statistic ＂k＂ and ＂h＂ and the critical consistency statistic＂ kcrit＂and＂ hcrit＂are adopted to be the means of evaluation and analysis. The＂ Sr＂and＂ SR＂can reflect the difference of paving quality, and the ＂k ＂, ＂h ＂, ＂kcrit＂and＂ hcrit＂can reflect the acceptable level of paving. The result proves that the consistency test evaluation method can evaluate the paving uniformity of bituminous pavement very well and reflect the information of bituminous pavement paving duly and effectively and provide forceful technique support to guide succedent construction.