Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

Personal portfolio

BASED CARBONATE ROCKS CONCRETE INVESTIGATION

Cherepov V.D. 1 Korshunova N.P. 1
1 Volga State University of Technology
We have investigated the laws of the formation of the basic technical and operational characteristics of the cjncrete, manufactured by scree of carbonate rocks, modified with various chemical additives: superplasticizer Glenium® 51, hydrophobic plasticizer SDO. When adding the additive SDO we have varied content of scree (range 0,9 to 0,7 m3). The injection of optimal physical and chemical additive SDO (0.03% by weight of cement) in vibrated concrete with the amount of cement - 350 kg/m3 provides the strength of concrete 35 MPa and frost resistance F150. Optimal content of modifier SDO for compositions of concrete with the amount of cement 350 kg/m3 is 0.03% by weight of cement was found. We have found that compounds with superplasticizer Glenium® 51 can obtain concrete with a strength of concrete 35 MPa for vibration-free technology.The injection of carbonate rocks let us save cement consumption when the content of scree is 0,3-0,4 m3for 1 m3 of concrete. The investigation allowes to optimize concrete content with reduced amount of scree.