SU547433A1 - Sound insulation mastic - Google Patents

Description

one

The invention relates to sound insulating mastic compositions.

Mastic is known, including Portland cement, sand, rubber crumb with a fiber filler, water, and a special drill 1.

The known polymer composition 5 is characterized with heat and sound insulation properties, including portland cement, sand, polyvinyl acetate emulsion, dibutyl acetate, water 2.

The object of the present invention is to increase the strength of the coatings obtained.

This is achieved by the fact that the mastic contains additional asbestos in the following ratio of components, weight. including:

Portland Cement1 - 2

PesokO, 5-2

Rubber crumb with fiber strand 0.1-0.5 Asbestos 0.1-0.8 It is planned to use asbestos of 6-8 grade.

. The preparation of the mastic is carried out in the following manner.

Initially, Portland cement, sand, crumb rubber are thoroughly cleaned, and then asbestos is introduced and all components are mixed further until a homogeneous mass is formed. Example 1

A mixture was prepared including, by weight.h:

Portland Cement2

Sand1

Rubber crumb with fibrous filler 0.2 Asbestos 0.1 Strength of samples from the proposed mixture

R

s was 115-124 kg / cm. The adhesion of hardened mastic to a concrete base is good.

When tearing off a metal plate glued to the hardened layer of mastic with epoxy resin, a rupture occurred along the layer of mastic.

High strength properties of mastic under the action of sip compression provide its higher modulus of elasticity; even with increased losses on internal

her friction, provides a high modulus of ps-fiber filler, distinguish, in the range of 2.5-2.810 n / m, with the aim of increasing

When covering the building construction, the strength properties of the resulting coatings,

in mastic transversely oscillating layers, it additionally contains asbestos, with the fluidity of the whole structure practically not jj the ratio of components, weight.h .: varies in thickness and the whole of the co-Portland cement1-2

decides on flexural oscillations as a single cent-Sand 0.5-2

loe. Rubber crumb with fiberMaste applied to building cone filler0,1-О, 5

Structures, for example, overlap, it is easy to- Q Aebesg.O, 1-0,8

Can be carried out in concrete plants

1 in the manufacture of products, and on the system-Sources of information, taken in the field. Examination during the examination:

Claims (2)

Claim 1. Patent of Germany No. 2137583, Sound insulation mastic including 2. Skupin L. Polymer solutions and formation of Portland cement, sand, crumb rubber, Stroyedad, M., 1967, p. 129. 547433 cl. From 04/31/30, published 1973.