Download or read book Field Validation of Statistically-Based Acceptance Plan for Bituminous Airport Pavements. Volume 2. Statistical Analysis of Marshall Properties of Plant-Produced Bituminous Materials written by J. L Burati (Jr) and published by . This book was released on 1984 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two aspects concerning evaluation by the Marshall method of bituminous airport pavement construction were addressed. Results from field Marshall and extraction tests were analyzed to identify correlations among the Marshall properties--stability, flow, and air voids--and asphalt content and aggregate gradation, This was done to evaluate the implementation of a multiple price adjustment system based on Marshall properties, and for the development of mathematical models for estimating each property from the percent asphalt content and aggregate gradation. Data were obtained from 5 airport paving projects; however, 2 of these had such small tonnages that there were not sufficient data to prove meaningful. A moderately low negative correlation exists between stability and air voids, while no statistically significant correlation was found to exist between stability and flow. The flow and air voids correlations were not consistent among the two projects considered, with one suggesting a moderately low negative correlation, and the other no statistically significant one. The mathematical models developed for stability, flow, and air voids from extracted asphalt content and aggregate gradation were not good predictors of those properties. This is probably due to primarily to the relatively high sampling and testing variability associated with the field extraction tests. Keywords: Acceptance Plans, Marshall Properties, Price Adjustments, Statistical Quality Control, and Correlation.