The Use of Products Disposal of Bottoms Residues as a Hydrophobic Additive

Abstract

The most rational direction of disposal of industrial waste is their use in obtaining products for construction purposes, such as concrete. For the purposeful regulation of the structure and properties of cement mortars and concretes, special highly effective additives-modifiers to concrete are widely used to increase strength and durability. In this paper, it was proposed to use the product disposal of bottoms residues as a hydrophobic additive – a composite material in the form of a fine powder. Disposal products, containing in their composition hydrophobic wax substances and silica-containing sorbents, give strength and water resistance to cement brick due to the manifestation of the acquired property of bulk hydrophobization. By keeping the samples in a solution of Na₂SO₄, the hydrophobic properties of the disposal products were confirmed. Concrete with the addition of a disposal product, obtained on the basis of the decontamination composition CaO:SFDP:spent silica gel, has the best performance.