Laboratory investigations on hot mix asphalt containing mining waste as aggregates

•Limestone mining waste was used as replacement of conventional aggregates in HMA.•The waste was used in two type of HMA i.e. BC (grade 2) and DBM (grade 2).•This study provide a sustainable solution for disposal problem of the mining waste. In the present study, limestone (famous as Kota stone) min...

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Bibliographic Details
Published in:Construction & building materials 2018-04, Vol.168, p.143-152
Main Authors: Gautam, Pradeep Kumar, Kalla, Pawan, Nagar, Ravindra, Agrawal, Rahul, Jethoo, Ajay Singh
Format: Article
Language:English
Subjects:
Analysis
Asphalt
Hot mix asphalt
Mining industry
Mining waste
Pavement material
Quarry waste
Sustainable pavement
Waste management
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Summary:•Limestone mining waste was used as replacement of conventional aggregates in HMA.•The waste was used in two type of HMA i.e. BC (grade 2) and DBM (grade 2).•This study provide a sustainable solution for disposal problem of the mining waste. In the present study, limestone (famous as Kota stone) mining waste reformed into aggregates of size between 19 mm and 0.075 mm were used to make bituminous concrete (BC) and dense bituminous macadam (DBM) by replacing conventional (Basalt) aggregates. Properties of LSW as aggregates was evaluated on the basis of physical parameters and mix performance. The mixes were evaluated on the basis of strength, durability, resistance to moisture and rutting. Results indicated suitability of LSA (Kota stone aggregates) as pavement material. Up to 50% replacement of conventional stone (CS) by LSA in BC mixes and 25% in DBM gave satisfactory results for moisture susceptibility, resistance to rutting and low temperature cracking. It was recommended to use LSA for making medium to low traffic roads.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2018.02.115