详情

原文传递 Intelligent Compaction of Soils鈥擠ata Interpretation and Role in QC/QA Specifications.

题名：	Intelligent Compaction of Soils鈥擠ata Interpretation and Role in QC/QA Specifications.
作者：	Dunston, P. S.; Cai, H.; Kuczek, T.; Li, S.
关键词：	Intelligent compaction, Soils, QC/QA, Quality control, Quality assurance, Embankment
摘要：	This report describes a study of intelligent compaction (IC) technologies, within the context of actual construction projects, for its potential as a component of INDOT鈥檚 QC/QA for soils. The output from an IC-equipped roller compaction equipment is a real-time area mapping of the compacted lift stiffness as captured by the IC measure. Data was collected to evaluate the correlation between each of two IC measures鈥攃ompaction meter value (CMV) and machine drive power (MDP)鈥攁nd in situ embankment quality test measures, the chief in situ test being the dynamic cone penetrometer (DCP) test which INDOT uses for soil embankment acceptance testing. Researchers sought to understand how well the IC measures might assess embankment quality as currently evaluated by the in situ measures. Window-averaged IC measures were compared with the in situ DCP test points. For CMV, a variable correlation was found between the average CMV and DCP values from 74 in situ locations. Also, a limited head-to-head comparison of CMV and MDP with the in situ measures provided some indication that MDP should be studied further. Lessons were learned regarding the elimination of bias in future correlation studies, critical provisions to facilitate best data quality, and important aspects of data management. IC technology holds promise for monitoring the consistency of the soil compaction effort and flagging weak areas in real time during compaction operations. However, further insight is needed regarding the correlation of the DCP measure with both types of IC measures for various soil characterizations and field moisture conditions.
报告类型：	科技报告