UDC 691.5

THE RESEARCH OF THE EFFECTIVENESS OF HYDROPHOBIC ADDITIVES IN CEMENT-SANDY SOLUTIONS DEPENDING ON WATER-CEMENT RATIO

Makhambetova Kamagay Nurabullaevna1, Bulgakov Andrey Valeryevich2
1Penza state University of architecture and construction, Candidate of technical Sciences
2Penza state University of architecture and construction, Student

Abstract
This article is dedicated to the effectiveness of hydrophobic additives in cement-sand solutions depending on water-cement ratio. The consistency of the solution was determined with water-cement ratio from 0,45 to 0,7. The research shows that with increasing water-cement ratio of more than 0,55 siliconorganic liquid (NGL-94) thickens the mixture of the solution, and zinc stearate saves the blurring of the cone, almost at the same level. Found that zinc stearate has a higher water repellence efficiency than the repellent NGL-94, without reducing the compressive strength of cement-sand solution. With increasing water-cement ratio from 0,45 to 0,7 compressive strength of cement-sand solution after 28 days of hardening with zinc stearate equal to 42,8 and 25,9 MPa, respectively, and NGL-94 equal to 32,5 and 18,0 MPa, respectively.

Category: 05.00.00 Technical sciences

Article reference:
The research of the effectiveness of hydrophobic additives in cement-sandy solutions depending on water-cement ratio // Modern scientific researches and innovations. 2015. № 5. P. 2 [Electronic journal]. URL: http://web.snauka.ru/en/issues/2015/05/53208

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