High-Strength Concrete Made of Nonferrous-Metals Industry Waste

Abstract

The use of calcium polysulfide sealer, which can be obtained by dilution of sulphur in lime suspension heated to 95 оС, when producing concrete of high specific weight provides improvement of its strength while being compressed by 30-50%. In doing so, up to 50% portland cement in the composition of binding one can be replaced with metallurgic ferriferrous slag or ferriferous stubs.

Determination of natural modes of railway overpasses

“…This is achieved through the use of spatial analysis technologies, taking into account the physical nonlinearity of materials, structural, geometric and genetic nonlinearity of the structure (Kasyanov et al, 2019;Skvortsov et al, 2018;Panchenko, 2018;Skvortsov et al, 2014). The guarantee of error-free modeling and, as a result, adequate calculation results is the professional training of the calculator, its practical experience, as well as the use of modern computer-aided design programs and BIM technology (Barabanshchikov et al, 2016;Makarenko & Kuznetsova, 2019;Pan et al, 2018;Umnova et al, 2018).…”

Nonferrous waste aerated concrete

“…It was used white Portland cement with an activity of 40 MPa, as fillers -ash from thermal power plants, ground slag of metallurgical production and basalt screening dust. The water-glass to ensure the viscosity of the system and calcium polysulfide addition to provide a quick and high strength gain was used [17][18][19][20][21][22]. Dry hydrated lime was introduced into the raw mix; PAK-3 aluminum powder and calcium hydroxide were used to intensify gas formation during the reaction.…”