Abstract
The authors discuss feasibility of high-tonnage direct inclusion of overburden in composites for the construction of road layers at mines. It is found that overburden has a strength as per State Standard GOST 23558-94 and the prolonged dedusting effect. The optimal contents of the binder and fly ash are 8 and 10% by mass, respectively. Mechanical activation of fly ash for 1 min enlarges its specific surface by 2 times. The frost-resistant composites modified with mechanically activated fly ash and stabilizer (1% by mass) have the strength grades M20–M40.
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Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2023, No. 1, pp. 188-197. https://doi.org/10.15372/FTPRPI20230118.
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Bespolitov, D.V., Konovalova, N.A., Pankov, P.P. et al. Overburden Recycling in Manufacture of Composite Materials for Road Construction at Mines. J Min Sci 59, 167–175 (2023). https://doi.org/10.1134/S1062739123010180
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DOI: https://doi.org/10.1134/S1062739123010180