SU833706A1 - Complex additive to concrete mix - Google Patents

Description

(54) COMPLEX ADDITIVE FOR CONCRETE

MIXTURES

Comparative physico-mechanical parameters of these compositions are given

in tab. 2

The use of the proposed additive allows to obtain concretes with high water resistance and frost resistance with a high mobility of the concrete mix with a draft of a standard cone of 10–12 cm. Concretes with such an additive should be used in transport and civil engineering for spans and

bridge supports, monolithic and prefabricated tunnel lining, where waterproof and frost-resistant concrete is required.

Concrete mixes with a complex additive, having such high mobility, can be supplied using concrete pumps and pneumatic concrete layers. Since the proposed additive consists of production wastes, its use reduces the cost per 1 m of products or structures by at least 0.4-0.6 p.

Table 1

Su gpfitno yeast

mash

Sodium fluoride

Aluminum fluoride

Silica oxide

Sodium sulfate

56 1.5

90 1.5

41

ten

table 2

Claims (1)

Integrated additive for concrete mixture comprising sulphite yeast mash and the sodium salt of an inorganic acid, characterized in that, for the purpose ^{of 50} increasing water resistance and frost resistance of concrete, it contains as sodium inorganic acid salts of sodium fluorosilicate, and further aluminum fluoride and silica at ₅₅ the following ratio of components, mass%: Sulphite-yeast mash 53–61 Silicon fluoride sodium 1-2 Aluminum fluoride 1-3 Silicon oxide 37–42.