Resource-saving materials based on hydrophobic low water demand binder

Abstract

This research have shown that the developed composition and method for preparation of granulated organic–mineral admixture S–3SSA allow production in drum granulator of cement materials modifier with de-sired properties using proposed mixing procedure for the admixture ingre-dients which include, mass. %: superplasticizer S–3 – 10; soap stock – 20; salt of inorganic acid – 30 and ash – 40. On the basis of laboratory studies, a ratio of the components included in the molding compound for pressed bricks with improved physical and technical properties was defined. Opti-mal composition of the molding compound should contain the following, mass.%: binder - 10; clay - 5; sand - 82; water - 3. A technological proce-dure for production of pressed brick based on gypsum binders of low water demand (GLWDB) was developed and technological production parame-ters were defined: moulding compound moisture content - 6%; raw materi-al strength – 0.4 MPa; specific pressure - about 15 MPa, curing conditions - natural. Basic physical and technical properties of pressed brick based on GVNV–50S were identified and studied. Strength kinetics, MPa: 1 day – 6.8; 3 days - 12.3; 28 days – 27; density-1950 kg / m3; softening coefficient equal.