Performance of replacing traditional natural aggregates in dense grade asphalt concrete with basic oxygen furnace slag

Shih Huang Chen, Jyh Dong Lin, Daud Huang, Ching Tsung Hung

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This study focuses on how the voids in mineral aggregate (VMA) and performance of dense grade asphalt concrete (DGAC) are influenced by the 100% replacement of coarse natural aggregates with basic oxygen furnace (BOF) slag. By using different mixture designs to obtain the optimal asphalt content, and then conducting performance tests and analysis of variance (ANOVA) between the test set and the comparison set, this study explores whether the replacement of coarse natural aggregate with BOF slag would reduce the durability and strength of DGAC. The mixture design results show that the BOF aggregates decreased the VMA of hot-mix asphalt; however, laboratory performance tests, especially moisture sensitivity and creep tests, showed that the lack of VMA did not adversely affect the durability of DGAC. Based on these results, 100% replacement of coarse natural aggregates with BOF slag is considered feasible and worthy of further study.

Original languageEnglish
Title of host publicationAdvanced Characterization of Asphalt and Concrete Materials - Selected Papers from the Proceedings of the Geo-Hubei 2014 International Conference on Sustainable Infrastructure
PublisherAmerican Society of Civil Engineers (ASCE)
Pages107-114
Number of pages8
Edition255 GSP
ISBN (Print)9780784478554
DOIs
StatePublished - 2014
EventGeo-Hubei 2014 International Conference on Sustainable Infrastructure: Advanced Characterization of Asphalt and Concrete Materials - Yichang, Hubei, China
Duration: 20 Jul 201422 Jul 2014

Publication series

NameGeotechnical Special Publication
Number255 GSP
ISSN (Print)0895-0563

Conference

ConferenceGeo-Hubei 2014 International Conference on Sustainable Infrastructure: Advanced Characterization of Asphalt and Concrete Materials
Country/TerritoryChina
CityYichang, Hubei
Period20/07/1422/07/14

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