Development of the Universal Working Equipment of the Excavator for Preparation of Materials Based on Waste during the Road Building

Abstract

The article proposes a technological line for recycling the blast-furnace slag. This line makes it possible to obtain the crushed stone for road building, which has high water and frost resistance. The design of replaceable working equipment of a single-bucket excavator, with replaceable working tools for loosening frozen slag in dumps and preparing it for use in road building, is proposed. The results of testing the manufactured replacement working equipment are presented. The results of mathematical processing of experimental data using the approximation method are presented, as well.

Laboratory evaluation of a complex treatment technology for reducing water absorption of the pavement subbase aggregate from the blast-furnace slag

“…The issues of reducing water absorption of the construction and building materials are considered in a large number of papers [30][31][32][33][34][35][36][37][38][39][40]. To reduce water absorption of materials, various researchers suggest methods such as the use of nano-TiO2-modified recycled coarse aggregate [30], using the air entraining agent (for mortars) [31], slurry coating modified methods (for recycled coarse aggregate) [32], silane emulsion impregnation [33], cement-silica fume slurry coating method [34], compression casting method (to reduce water absorption properties of concrete) [35], impregnation with spent technical fluids [36], selective crushing [1], enrichment in heavy media [37], jigging [38], porosity enrichment on the friction classifier [39], etc. There is also a known method for reducing water absorption of liquid BFS , including pouring it with a thin layer for faster solidification [40].…”

“…Figure 1. ACBFS dump of Qarmet JSC (Kazakhstan): (a) satellite photo; (b) regular photo[36]. Adapted from[36].…”