Raw material mixture for concrete production

FIELD: chemistry.

SUBSTANCE: raw material mixture for concrete production contains, wt %: Portland cement 27.0-31.0; TPP fly ash 52.3-58.9; superplasticiser S-3 0.8-1.4; sodium ethylsiliconate or sodium methylsiliconate 0.2-0.5; 5-30 mm long lavsan fibre 0.05-0.1; water 13.0-15.0.

EFFECT: reduction of cement consumption with provision of concrete strength.

1 tbl

 

The invention relates to the construction materials industry, in particular the production of concrete.

Famous raw mix for the production of concrete (foam concrete)containing, wt.%: cement 35,0-39,0; fly ash TPP 35,0-39,0; resin air entraining extraction-rosin of 0.11-0.17; carboxymethylcellulose 0,05-0,07; superplasticizer C-3 0,4-1,4; water - other [1].

The objective of the invention is to reduce cement consumption while ensuring the strength of the concrete.

Technical result is achieved by the fact that the raw mix for the production of concrete containing Portland cement, fly ash of thermal power plants, superplasticizer C-3, water additionally contains ethylsilicate sodium or potassium methyl siliconate and Mylar fiber length of 5-30 mm in the following ratio, wt.%: Portland 27,0-31,0; ash TPP 52,3 to 58.9; superplasticizer C-3 0,8-1,4; ethylsilicate sodium or potassium methyl siliconate 0,2-0,5; Mylar fiber length of 5-30 mm 0,05-0,1; water 13,0-15,0.

The composition of the raw mix is shown in the table.

Table
ComponentsContent, wt.%:
composition No. 1composition No. 2composition No. 3 composition No. 4
Portland cement (500 M)27,029,031,029,0
Ash TESof 58.955,3552,355,35
Superplasticizer C-30,81,11,41,1
Ethylsilicate sodium0,20,5--
The potassium methyl siliconate--0,20,5
Mylar fiber length of 5-30 mm0,10,050,10,05
Water13,014,015,014,0

Components dispense, mix and prepare the raw material mixture in which metal fill shapes. The mixture is compacted in the forms and kept it until hardened. The compressive strength of the products obtained from the proposed raw mix, will be not less than 4 MPa.

The use of the proposed raw mixture allows to reduce the consumption of Portland cement and increase the consumption of industrial waste - fly ash of thermal power stations.

The source of information

1. RU # 2237041, C04B 38/10, 2003.

Raw mix for the production of concrete containing Portland cement, fly ash of thermal power plants, superplasticizer C-3, water, characterized in that it further comprises ethylsilicate sodium or potassium methyl siliconate and Mylar fiber length of 5-30 mm in the following ratio, wt.%: Portland 27,0-31,0; ash TPP 52,3 to 58.9; superplasticizer C-3 0,8-1,4; ethylsilicate sodium or potassium methyl siliconate 0,2-0,5; Mylar fiber length of 5-30 mm 0,05-0,1; water 13,0-15,0.



 

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