Concrete mixture

FIELD: chemistry.

SUBSTANCE: concrete mixture, which includes portland cement, expanded clay, haydite sand, water, further contains asbestos of 6-7 types, which is fluffed up in advance, gypsum binder, sodium methyl siliconate or sodium ethyl siliconate, with the following ratio of components, wt %: portland cement 26.0-30.0; expanded clay with particle size of 20-40 mm 46.0-48.0; haydite sand 5.0-8.5; asbestos of 6-7 types, which is fluffed up in advance, 0.5-1.0; gypsum binder 0.5-1.0; sodium methyl siliconate or sodium ethyl siliconate1.0-1.5; water 15.0-17.0.

EFFECT: high strength.

1 tbl

 

The invention relates to the construction materials industry, in particular to the manufacture of concrete building blocks for low-rise construction.

Famous concrete mixture comprising, by wt.%: cement 21,3-24,2; clay 57,6-64,0; clay sand 8,6-17,8; expanded perlite sand 3,2-4,6; saponified rosin 0,001-0,001 2; water [1].

The objective of the invention is to increase the durability of products derived from the concrete mixture.

The technical result is achieved by the fact that the concrete mix including Portland cement, lightweight aggregate, expanded clay sand, water, characterized in that it further contains asbestos 6-7 varieties, pre-crushed, gypsum binder, potassium methyl siliconate or ethylsilicate sodium in the following ratio, wt.%: Portland 26,0-30,0; expanded clay fraction 20-40 mm 46,0-48,0; clay sand 5,0-8,5; asbestos 6-7 varieties, pre-crushed, 0,5-1,0; gypsum binder 0,5-1,0; potassium methyl siliconate or ethylsilicate sodium 1.0 to 1.5; water 15,0-17,0.

The composition of concrete mixtures are given in the table.

Table
ComponentsContent, wt.%:
composition No. 1composition No. 2 composition No. 3composition No. 4
Portland cement (M500)26,028,030,028,0
The clay fraction 20-40 mm48,047,046,047,0
Ceramsite sand8,55,06,05,5
Asbestos 6-7 varieties, pre-crushed0,50,751,00,75
Gypsum binder
G-71,0---
G-10-0,75--
G-13- -0,5-
G-16---0,75
The potassium methyl siliconate1,01,5--
Ethylsilicate sodium--1,51,0
Water15,0of 17.015,0of 17.0

The components are metered in the desired quantities and mix. Prepared concrete mixture is placed in a metal (pre-lubricated with mineral oil) forms and allowed to cure. The strength of the products derived from the concrete mixture, the compression will be (at the age of 28 days) 6-8 MPa.

The source of information

1. SU # 1276650, 1986.

Concrete mix including Portland cement, lightweight aggregate, expanded clay sand, water, characterized in that it further contains asbestos 6-7 varieties, pre-crushed, gypsum binder, potassium methyl siliconate or ethylsilicate sodium with next soothes the NII components, wt.%: Portland 26,0-30,0; expanded clay fraction 20-40 mm 46,0-48,0; clay sand 5,0-8,5; asbestos 6-7 varieties, pre-crushed, 0,5-1,0; gypsum binder 0,5-1,0; potassium methyl siliconate or ethylsilicate sodium 1.0 to 1.5; water 15,0-17,0.



 

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