SU706382A1

SU706382A1 - Composition for finishing freshly formed concrete and ferroconcrete articles

Info

Publication number: SU706382A1
Application number: SU782642138A
Authority: SU
Inventors: Анатолий Маркович Шикирянский
Original assignee: Уральский Научно-Исследовательский И Проектный Институт Строительных Материалов Уралниистромпроект"
Priority date: 1978-07-12
Filing date: 1978-07-12
Publication date: 1979-12-30

Description

1one

Изобретение относитс к промышленности строительных материалов и может быть использовано при изготовлении бетонных и железобетонных изделий.The invention relates to the building materials industry and can be used in the manufacture of concrete and reinforced concrete products.

Изве.стна композици дл напьтени на свежеотформованные бетонные и железобетонные издели , включающа дис персный вспученный перлит ij.A known composition for spraying onto newly formed concrete and reinforced concrete products, including dispersed expanded perlite ij.

Наиболее близкой к описываемому изобретению по технической сущности и достигаемому результату вл етс ком позици дл отделки свежеотформованных бетонных и железобетонных изделий, включающа , вес.%: глиноземистый плавленный цемент 4О-20, портландцемент 60-80 и добавку карбоната щелочного металла 0,22 - 1,2 2.Closest to the described invention, the technical essence and the achieved result is the composition for finishing freshly molded concrete and reinforced concrete products, including, wt.%: Alumina fused cement 4O-20, Portland cement 60-80 and the addition of alkali metal carbonate 0.22 - 1 2 2.

Однако после нанесени таких композиций поверхностный слой издели характеризуетс недостаточной плотностью и стойкостью к агрессивным воздействи м , а также мецпенно отвердевает, в результате при выпадении капель конденсата в процессе тепловой обработ-However, after the application of such compositions, the surface layer of the product is characterized by insufficient density and resistance to aggressive effects, and also hardens metspno, as a result of the precipitation of condensate drops during heat treatment.

ки на поверхности образуютс каверны и наблюдаетс шелушение.caves are formed on the surface and peeling is observed.

Цель изобретени - повьпиение плотности поверхностного сло изделий.The purpose of the invention is to increase the density of the surface layer of products.

Это достигаетс тем, что композици дл отделки свежеотформованных бетонных и железобетонных изделий, включающа глиноземистый компонент и добавку, содержит в качестве глиноземистого, компонента отработанный сталерафинировоч- ный щлак, а в качестве добавки кристаллический сернокислый магний при следующем соотношении компонентов, вес.%: Отработанный сталё- рафинировочный шлак50-60This is achieved by the fact that the composition for finishing freshly molded concrete and reinforced concrete products, including the alumina component and the additive, contains, as an alumina component, a waste steel refining slag and, as an additive, crystalline magnesium sulphate in the following ratio of components, wt.%: - refining slag50-60

Кристаллический сернокислый магний .40-50 Композиции) нанос т на поверхность свежеотформованного издели и производ т затиркуповерхности издели .Crystalline magnesium sulphate .40-50 Composition) is applied to the surface of a freshly molded product and produces a smooth surface of the product.

Claims

The mixture of spent steel refined slag and magnesium sulphate interacts with the components of concrete jiMecH (cement, water), quickly re-opens due to the accelerating effect of magnesium sulphate, forming layers of concrete with increased density and resistance to aggressive effects. The sprayed powder of the composition is 60-150 g / m of the surface of the product. The compositions of the compositions are as follows: - - - Exhaust stelerefining donkey 5O-60 Crystalline sulphate, magnesium 50-40 The described composition can dramatically increase the viscosity of the surface layer of the product and ensure its protection against the damaging effect of the condensate droplets in the heat treatment chamber. The further interaction of the cement, alumina component and sulphate maglie contributes to the rapid hardening and increase in the density of the surface layer of concrete, with the good impermeability of the product doubled. W 4 Formula of the invention Composition for finishing freshly shaped concrete and reinforced concrete products, including alumina a mystical component and an additive, characterized in that, in order to increase the density of the surface layer of products, it contains waste steel refining sludge as an alumina component. As an additive, crystalline magnesium sulphate in the following ratio of components, wt.%: Used steel refining slag 5O-6O Crystal magnesium sulphate 40-50 Information sources, at These are taken into account during the examination. 1. Sokolov V. А. and others. The main directions and new technological methods of finishing the facade surfaces of panels in the USSR and abroad. Referential information. The industry of precast concrete, 1977, vol. 9,.

2.Patent of France No. 2038924 (B),. C, C 04 B 41/00, published. 1971 (prototype),.