Research On The Dynamic Control Quality Technology Of Bao-Han Expressway Asphalt Pavement

Bad construction quality control is an important reason of asphalt pavement damage. The Quality control of asphalt concrete pavement construction is a dynamic process, which requires throughout the whole process of it. To ensure the quality of pavement engineering, according to the deviation be found, it have to adjust the production in time. Therefore, the dynamic control of the asphalt pavement construction should be take as part of the Statistical Process Control, and the asphalt pavement should also be seen as an product. Using the statistical knowledge scientifically and it has important practical value of real-time monitoring of asphalt pavement construction. This article relying on this highway Baoji Shaanxi and Gansu Han Bao border road projects to a large number of test and monitoring data, using the methods of statistical process control theory, for the following three aspects:First, Bao Han Cement Treated Base, sub-base and asphalt surface layer of three-level grading curve with the scope and optimized. Cement stabilized gravel, sub-base compaction and vibration using standard molding compared two methods to determine the best dosage of cement, the best water content and maximum dry density control targets. Using optimized graded asphalt mixture and the Marshall test section of paved to finalize the surface layer of asphalt mixture quality control indicators.Secondly, the specific content of statistical process control and methods of in-depth study, and statistical process control tools-control charts for detailed analysis of key indicators through the analysis of statistical process and the production of asphalt mixtures with its own characteristics, to determine the production process in the process control standards and methods for the construction to provide a valuable basis for guiding.Again, in the road production of the three tenders application of statistical process control theory applied to the key indicators to monitor, analyze causes of abnormal data process and adjust the process control. Finally, Po Hon whole section of highway traffic section of the subject of three road asphalt mixing plant monitoring data to analyze the black box, so that cause of the exception under control adjusted so that the entire section of the final asphalt surface construction process in a "controlled" state. This study was Po Hon Shaanxi-Gansu section of a highway project in Baoji to the production of statistical process control provides guidance on the basis of the production mix can improve the management methods to improve the quality of products mixture to improve the quality of highway and road construction management.