Compound for Reinforcing Surface Treatment

Abstract

A compound for reinforcing surface treatment, in particular a compound for waterproof reinforcing surface treatment of concrete containing water glass, which contains 1 to 10 wt % of bis (γ-triethoxysilylpropyl) tetrasulphide, 89.9 to 98 wt % of an aqueous solution of lithium silicate, and 0.1 to 1 wt % water glass stabiliser.

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A compound for reinforcing surface treatment, in particular a compound for waterproof reinforcing surface treatment of concrete containing water glass, which contains 1 to 10 wt % of bis (γ-triethoxysilylpropyl) tetrasulphide, 89.9 to 98 wt % of an aqueous solution of lithium silicate, and 0.1 to 1 wt % water glass stabiliser.

Claims

1. A compound for waterproof reinforcing surface treatment of concrete comprising water glass, comprising 1 to 10 wt % of bis (γ-triethoxysilylpropyl) tetrasulphide, 89.9 to 98 wt % of an aqueous solution of lithium silicate, and 0.1 to 1 wt % water glass stabilizer.

2. The compound for reinforcing surface treatment, according to claim 1, wherein the water glass stabilizers are hydrophilic alkoxy alkyl-ammonium salts.

3. The compound for reinforcing surface treatment according to claim 1, wherein the aqueous solution of lithium silicate has a molar ratio of SiO.sub.2 and Li.sub.2O is in the range of from 3.5 to 4.5.

Description

EXAMPLES OF THE PERFORMANCE OF THE INVENTION

Example 1

[0020] The compound for waterproof reinforcing treatment of concrete surfaces contains 1.3 wt % of bis (γ-triethoxysilylpropyl silylpropyl) tetrasulphide, 97.8 wt % of an aqueous solution of lithium silicate, and 0.9 wt % water glass stabiliser.

[0021] The water glass stabilisers are hydrophilic alkoxy alkyl-ammonium salts, in the form of a 98% aqueous solution of N, N, N N′-Tetrakis (2-hydroxypropyl) ethylenediamine.

[0022] The aqueous lithium silicate solution has a molar ratio of SiO.sub.2 and Li.sub.2O of 3.5.

[0023] The resulting compound is poured onto the concrete surface.

Example 2

[0024] The compound for waterproof reinforcing treatment of concrete surfaces contains 1 wt % of bis (γ-triethoxysilylpropyl silylpropyl) tetrasulphide, 98 wt % of an aqueous solution of lithium silicate, and 1 wt % water glass stabiliser.

[0025] The water glass stabilisers are hydrophilic alkoxy alkyl-ammonium salts, in the form of a 98% aqueous solution of N, N, N′, N′-Tetrakis (2-hydroxypropyl) ethylenediamine.

[0026] The aqueous lithium silicate solution has a molar ratio of SiO.sub.2 and Li.sub.2O of 4.5.

[0027] The resulting compound is poured onto the concrete surface.

Example 3

[0028] The compound for waterproof reinforcing treatment of concrete surfaces contains 10 wt % of bis (γ-triethoxysilylpropyl silylpropyl) tetrasulphide, 89.9 wt % of an aqueous solution of lithium silicate, and 0.1 wt % water glass stabiliser.

[0029] The water glass stabilisers are hydrophilic alkoxy alkyl-ammonium salts, in the form of a 98% aqueous solution of N, N, N′, N′-Tetrakis (2-hydroxypropyl) ethylenediamine.

[0030] The aqueous lithium silicate solution has a molar ratio of SiO.sub.2 and Li.sub.2O of 4.03.

[0031] The resulting compound is poured onto the concrete surface.

INDUSTRIAL APPLICATION

[0032] The compound for reinforcing surface treatment can particularly be used for waterproof reinforcing surface treatment of concrete, but also for any surface treatment, especially building materials containing calcium.