Concrete mixture

FIELD: chemistry.

SUBSTANCE: concrete mixture contains, wt %: portland cement 24.0-26.0, expanded clay with particle size of 20-40 mm 10.0-15.0, haydite sand 41.4-47.1, superplasticiser S-3 1.0-1.5, sodium ethyl siliconate or sodium methyl siliconate 1.0-1.5, lavsan fibre cut into 10-20 mm pieces 0.1-0.15, water 15.0-17.0.

EFFECT: high strength of articles made from the concrete mixture.

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 containing the 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 0,001-0,0012; 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, further comprises a superplasticizer C-3, ethylsilicate sodium or potassium methyl siliconate and sliced into segments 10-20 mm Mylar fiber, wt.%: Portland 24,0-26,0; expanded clay fraction 20-40 mm 10,0-15,0; clay sand 41,4-47,1; superplasticizer C-3 1.0 to 1.5; ethylsilicate sodium or potassium methyl siliconate 1.0 to 1.5; cut into segments 10-20 mm Mylar fiber 0,1-0,15; water 15,0-17,0.

The composition of concrete mixtures are given in the table.

composition No. 4
Table
ComponentsContent, wt.%:
composition No. 1composition No. 2composition No. 3
Portland24,025,025,026,0
The expanded clay (fraction 20-40 mm)10,012,512,515,0
Ceramsite sand47,142,642,641,4
Superplasticizer C-31,01,251,251,5
Ethylsilicate sodium1,01,5--
The potassium methyl siliconate--1,51,0
Cut into segments 10-20 mm Mylar fiber0,10,150,150,1
Water16,8 of 17.0of 17.015,0
The strength of concrete in compression at the age of 28 days, MPa4-54-54-54-5

In the concrete mixture used superplasticizer C-3, obtained on the basis of the condensation products of naphthalenesulfonate and formaldehyde [2].

The components are metered in the desired quantities and mix. Prepared concrete mixture is placed in a metal (pre-lubricated with mineral oil) shape and leave to set.

The source of information

1. SU 1276650, 1986.

2. Afanas'ev, A. A. Concrete work. - M.: Higher.HQ., 1991. - S. 29-30.

Concrete mix including Portland cement, lightweight aggregate, expanded clay sand, water, characterized in that it further comprises a superplasticizer C-3, ethylsilicate sodium or potassium methyl siliconate and sliced into segments 10-20 mm Mylar fiber, wt.%:

Portland24,0-26,0
the clay fraction 20-40 mm10,0-15,0
ceramsite sand41,4 was 47.1
superplus is idicator S-3 1,0-1,5
ethylsilicate sodium or potassium methyl siliconate1,0-1,5
cut into segments 10-20 mm Mylar fiber0,1-0,15
water15,0-17,0



 

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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.

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1 tbl

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4 cl, 5 ex, 3 tbl, 1 dwg

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2 tbl

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1 tbl

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2 ex

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2 tbl

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5 tbl, 1 ex

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1 tbl

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2 tbl, 12 ex

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