Abstract: Traditional method uses randomly-sampled dry density to evaluate dam rolling compaction
quality, but it cannot reflect the real quality of rolling compaction. To improve the evaluation, a dual
evaluation model combining the dry density method with a reliability theory for dry density parameter
analysis on the platform of a construction quality real-time monitoring system is developed, and a
corresponding implementation procedure is established for the evaluation. In application of this dual method
to one reservoir construction project in Henan province, variability of dry density and its influencing factors
were obtained via reliability and sensitivity analysis on its parameters. It has been shown that the dual
evaluation based on real-time monitoring improves the reliability of evaluation and provides a technical
support to dam rolling compaction quality control.