Volumetric properties and leaching effect of asphalt mixes with electric arc furnace steel slag and copper mine tailings
This study focuses on the potential of electric arc furnace (EAF) steel slag and copper mine tailings as asphalt paving materials with respect to issues of volumetric properties and leaching. In this study, four different asphalt mixes were investigated; each contained EAF steel slag and copper mi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Universiti Kebangsaan Malaysia
2016
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| Online Access: | http://journalarticle.ukm.my/9683/ http://journalarticle.ukm.my/9683/ http://journalarticle.ukm.my/9683/1/16_Ebenezer_Akin.pdf |
| Summary: | This study focuses on the potential of electric arc furnace (EAF) steel slag and copper mine tailings as asphalt paving
materials with respect to issues of volumetric properties and leaching. In this study, four different asphalt mixes were
investigated; each contained EAF steel slag and copper mine tailings of various proportions. Apart from the microstructure
analysis of the materials, a toxicity characteristics leaching procedure (TCLP) test was conducted on both the mixes and
the aggregates. All the mixes were evaluated by the following parameters: Voids in the mineral aggregates (VMA), voids
in total mix (VTM), voids filled with asphalt (VFA), Marshall stability and flow and specific gravity. F-test ANNOVA was
used to evaluate the degree of significance of the mixes with each of the evaluated standards. It was observed that the
mixes containing either EAF steel slag or copper mine tailings or both gave better results than the control mix. In terms
of the TCLP test, none of the detected hazardous elements exceeded the standard limits, which indicates the possibility
of using them as construction materials. |
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