基于无损检测及常规检测的单机宽幅和并机梯次摊铺效果综合分析

在对摊铺离析的成因和类型及对路面使用性能的影响进行了深入探讨的基础上,通过采用常规检测和无损检测两种检测手段,对并机梯次和单机宽幅摊铺形式下沥青混合料级配稳定性、路面压实度和空隙率以及路面内部和表面施工均匀性进行了检测分析,进而对两种施工法的摊铺效果进行了全面评价。评价结果为:单机宽幅摊铺效果不够理想;而并机梯次作为主要摊铺形式,有效地保证了沥青路面的施工质量;且无损检测与常规检测具有很好的相关性。在现阶段质量评价体系还不够完善的情况下,两种检测方式结合起来检测施工均匀性切实可行。

Synthesis Analysis on Paving Effect of Single Machine and Trapezoid Paving Based on Non-destructive Test and Conventional Test

Now,there is neither systematic appraisement index nor standard about the paving uniformity of pavement in the completion test and acceptance of pavement construction.Based on discussing the cause and type of paving segregation and the influence on the pavement functional performance brought by paving segregation,the gradation stability of asphalt mixture,degree of compaction and void-ratio of pavement and the paving uniformity of pavement interior and surface with single machine and trapezoid paving were analyzed and assessed by using the conventional test and non-destructive test,and the paving effect of the two paving methods was comprehensively appraised.The result shows that the paving effect of the single machine paving is not very well,and the mostly used paving method,the trapezoid paving can insure construction quality of pavement,and the conventional test and non-destructive test have good pertinence.Presently,the quality appraisement system is far from perfect,the paving uniformity test by combining the two testing methods is feasible.