Correlation of Aggregate Properties to Performance of Asphalt Pavements in Hawaii
-
2006-07-01
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Edition:Final
-
Corporate Publisher:
-
Abstract:Results from laboratory index tests are typically used to determine the quality of aggregate materials for use in asphalt pavements. The expectation is that good index, chemical and mechanical characteristics will lead to superior long-term performance in hot mix asphalt (HMA) courses. The State of Hawaii, like many other states has developed a set of criteria that materials have to meet in order to be acceptable for use in asphalt mixes. However, it was not clear whether these particular requirements represent an optimum set and how they may correlate with long term pavement performance. This study represents an attempt at providing answers in this regard. Samples from twelve aggregate quarries used in asphalt concrete and performance records from various road sections maintained by the Hawaii Department of Transportation (HI-DOT) were collected. Aggregate tests from the HI-DOT specifications list, along with a number of additional standard tests, were conducted and correlations were sought with performance. Of the current HI-DOT specifications, it was found that the sand equivalent and absorption tests correlated best with pavement performance. Of the alternate tests, it was found that the magnesium sulfate soundness and aggregate durability index tests were the best indicators of pavement performance. It is therefore recommended that these two tests be used to replace the sodium sulfate soundness and LA abrasion tests.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type: