Statistical Approach to the Quality Control of Plant Mix Pavement

摘要

The incentive for this statistical study was based on the general desire to improve control and acceptance procedures. This specific study of plant mix pavement (asphaltic concrete) has provided parameters for gradation, density and extraction tests which enable an evaluation of existing specifications. Sampling was conducted on three construction projects during routine production. The sampling procedures and construction techniques were described for each project. The testing was performed in accordance with the State's standard procedures. After analysis of data, a comparison was made with current tolerance limits. Using the parameters from this study, there are some areas of non-conformance with current specifications. These comparisons are clearly shown in graphical form and a discussion is provided. (BPR abstract)