Rational Compounds of Low-Strength Concrete with Improved Coefficient of Efficiency of Cement Use
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Date
2019
Journal Title
Journal ISSN
Volume Title
Publisher
Trans Tech Publications LTD, Switzerland
Abstract
ENG: Abstract. The purpose of the research findings, given in article, is aimed to determine the rational
compounds of concrete with an average cubic compressive strength less than 20 MPa with
minimum required expenditures of cement. To reach the goal, mathematical planning of the
experiment was used with variability of cement consumption from 90 to 190 kg / m3 in the
compositions of the concrete mixture, and for the fine-grained filler from tails of processed ores, the
consumption was like at 100 to 400 kg / m3. The result of processing experiments has shown us the
dependences of the change in strength and coefficient of efficiency of the use of cement of the
factors involved. Optimized values increase most intensively with minimum cement consumption
and a change in the consumption of fine filler within the limits of the study. The highest coefficient
of efficiency of use of cement is expressed by the ratio of the achieved strength per unit mass of
used cement in the concrete mix and it was obtained at a cement consumption of 90 kg / m3 and a
filler of 400 kg / m3. Using the obtained dependences of optimized values on the factors under
study, the composition of concrete may be predicted with a strength up to 20 MPa with the required
amount of filler.
Description
A. Netesa: ORCID 0000-0002-3364-3446; N. Netesa: ORCID 0000-0001-9434-1532; A. Radkevych: ORCID 0000-0001-6325-8517; S. Yakovliev: ORCID 0000-0002-6431-4303
Keywords
concrete, strength, grain composition of aggregates, cement, tails of processed ores, КБВ
Citation
Rational Compounds of Low-Strength Concrete with Improved Coefficient of Efficiency of Cement Use / Netesa A. M. at al. Material Science Forum : Proceedings of the Intern. Conf. on Actual Problems of Engineering Mechanics (Odessa, Ukraine, 20–24 May 2019). Switzerland : Trans Tech Publications, Ltd., 2019. Vol. 968. P. 26–34. DOI: 10.4028/www.scientific.net/MSF.968.26.