Bitumen mastices for waterprofing
Abstract
Bitumen mastices for waterprofing
Incoming article date: 13.04.2022This paper studies the effect of recycled fillers on the properties of waterproofing mastics made for the tough climatic conditions in Siberia. Currently mineral powders from carbonate rocks are used for mastics production. However, these rocks are not located in all regions of Russia Federation and the production of mineral filler powders from these rocks is often associated with great production costs. The aim of this study is to develop bitumen mastics with reduced overall production costs that are able to comply with GOST standards. The experiment was conducted to provide insight on the recycled fillers (RF) in reliability, durability, climatic, freezing resistance of bitumen mastics. The method we applied involved in classic (with limestone filler) bituminous mastics comparison with recycled mineral fillers the tailings of neutralization (Norilsk) as well as the waste of barite production (Chernogorsk). A laboratory test method for bituminous mastics was used so what we could ascertain their properties like softening temperature, penetration value, low-temperature extensibility, Fraas breaking point, Modulus of elasticity. Results indicate that the mastics freezing resistance have increased with combined use of the recycled mineral fillers and thermoelastoplastic elastomer (TPE) DST-30. They recognize the possibility of waste utilization as alternative fillers in bitumen mastics that could lead to cost reduction effect. Developed mastic compositions recommended for use in commercial construction which contribute to the goals of waste processing and recycling in the Krasnoyarsk Territory.
Keywords: stone-mastic asphalt concrete, industrial waste, nepheline sludge, mineral powder, stabilizing additive, cord fiber waste, bitumen, road surfaces