SU1031939A1 - Mortar for coating concrete products - Google Patents

Abstract

CONSTRUCTION SOLUTION FOR POKKflVlR CONCRETE PRODUCTS, inclusions of cement, sand, mineral additive, asbestos and organic glue, which is due to the fact that, with the whole increase in adhesion and crack resistance of the coating, it additionally contains slaked lime as a mineral additive, ground cupola slag, and as organic glue carboxymethylcellulose sodium salt with the following ratio of components, May. % .t Cement10-20 Sand45-66 Ground cupola slag 1-2 Asbestos 7-10 Sodium salt of carboxymethyl methylcellulose 1-3 Lime per shenna 10-20

Description

WITH

with so with so

The invention relates to the builder of construction materials, materials, in particular, the construction mortars used for coating wall panels and blocks.

Known mortar for finishing concrete products, including f11, may.%

Cement19 0-47,0

Sand47, 0-74.0

Gypsum 0.25-2.0

Mineral mineral active, 25-2.0

Pigment 0.25-2.0

Caseino-cement glue 0,15-4,0

The closest to the proposed technical essence and the achieved result is a mortar for coating concrete of the target, including f2, kg: Portland cement M-40033 Microasbest33 Technological chalk26 Casein glue3 Polyvinyl acetate emulsion 50% or SCS-latex 4 Solutions of impurities insufficient adhesion and crack resistance of the coating.

The purpose of the invention is to increase the adhesion and crack resistance of the coating.

The goal is achieved by the fact that a mortar for coating concrete products, including cement, sand, mineral additive, asbestos and organic glue, additionally contains lime of slaked cupola grape slag, and as organic glue - sodium carboxymethylcellulose with the following the ratio of components, ae.%:

Cement10-20

Sand45-66

Ground cupola slab1-2 Asbestos 7-10-10 Sodium carboxymethylcellulose salt 1-3

Slaked lime 10-20

Ground cupola slag foundry has the following composition, wt.%: MDO, 0; SiO; 35.6-44.2) CaO 14.9-36.3; MpO 1.9-16.4 FjO 1.0-11.1 A12 Oz - the rest.

Asbestos is an enrichment product for asbestos ores containing the mineral, chrysotile asbestos, which is magnesium hydrosilicate,

The chemical composition of asbestos corresponds to the theoretical formula ZMdO “SZYu 2N2O. To prepare the solution, cement M-400 is mixed with hydrated lime in a 1: 1 ratio by weight. The mortar is prepared in the SB-43 mixer, where the dry ingredients are loaded and mixed thoroughly. Water is introduced into the mortar until a water ratio of 0.42 is obtained. Then the solution under pressure of 2-3 atm is applied with a spray gun to the surface of the cellular concrete product. The thickness of the coating after the three phase application of the solution is 6 mm.

Specific examples of performance and physico-mechanical parameters are given in Tables 1 and 2.

Table 1

Quantitative content

Component components, May.%: You

40 Cement 10 20 14.5 12.5 13.5

14.5 12.5 13.5 10 20 59.5 6664

65 45

1.5 I 22 87

10 10 33

table 2

Noting}

The proposed mortar: allows you to get a coating with increased adhesion and tretsinotoksyutyuto.

cht6 gives a possible l: increase the durability of the concrete product by 14-16%. Adhesion of the coating to the surface of the concrete is determined by MEAT, before the separation of the coating after 14 days of storage at 18: 2jOfC; and humidity 60%, and resistance to rupture by. not in concrete — by stretching a specimen by bending the specimen before it forms in the product.

Claims (1)

CONSTRUCTION SOLUTION FOR COATING CONCRETE PRODUCTS, including cement, sand, mineral additive, asbestite and organic glue, characterized in that, in order to increase adhesion and crack resistance of the coating, it additionally contains slaked lime, as a mineral additive - ground cupola granular slag, and as organic glue - sodium carboxymethyl cellulose in the following ratio, May. Cement Sand Ground cupola granular slag Asbestite Sodium Carboxymethyl Cellulose Salt Slaked Lime 10-20 45-66 1-2 7-10 1-3 10-20 βεβιεοι ^<th η! > 19,, 0-47.0 4'7.0-74.0 0.25-2.0