Use of incinerator bottom ash in open-graded asphalt concrete

•An effective and alternative way to recycle incinerator bottom ash (IBA).•It is feasible to apply the IBA to open-graded asphalt concrete (OGAC).•The IBA replacement improves the stability and indirect tensile strength of OGAC.•Up to 80% of natural fine aggregates in OGAC could be replaced by IBA....

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Bibliographic Details
Published in:Construction & building materials 2017-09, Vol.149, p.497-506
Main Authors: Luo, Huan-Lin, Chen, Shih-Huang, Lin, Deng-Fong, Cai, Xin-Rong
Format: Article
Language:English
Subjects:
Aggregates (Building materials)
Analysis
Ash (Chemistry)
Asphalt concrete
Incinerator bottom ash
Mechanical properties
Open-graded mix
Strength of materials
Structural stability
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Summary:•An effective and alternative way to recycle incinerator bottom ash (IBA).•It is feasible to apply the IBA to open-graded asphalt concrete (OGAC).•The IBA replacement improves the stability and indirect tensile strength of OGAC.•Up to 80% of natural fine aggregates in OGAC could be replaced by IBA. To observe the effects of the use of incinerator bottom ash (IBA) on open-graded asphalt concrete (OGAC), natural fine aggregates are partially replaced by IBA in OGAC. The results indicate that the use of IBA helps improve the adhesive force between asphalt and aggregates. The stability and indirect tensile strength of OGAC are effectively improved by the use of IBA as a replacement material. The natural fine aggregate content in the OGAC is 25%. The results indicate that 80% of natural fine aggregates could be replaced by IBA and demonstrate the feasibility of using IBA in OGAC in engineering applications.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2017.05.164