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  3. 3(1)2021
  4. EFFECT OF LIMESTONE POWDER ON THE PROPERTIES OF BLENDED РORTLAND CEMENTS

EFFECT OF LIMESTONE POWDER ON THE PROPERTIES OF BLENDED РORTLAND CEMENTS

JTBP.
2021;
Volume 3, Number 1
: 35-41
https://doi.org/10.23939/jtbp2021.01.035
Received: February 14, 2021
Revised: March 28, 2021
Accepted: May 13, 2021
Authors:
  1. Tetiana Kropyvnytska
  2. Iryna Нeviuk
  3. Roksolana Stekhna
  4. Oksana Rykhlitska
  5. Lidiia Deschenko
1
Lviv Polytechnic National University, Department of building рroduction
2
PJSC “Ivano-Frankivskcement”
3
3Ivano-Frankivsk National Technical University of Oil and Gas, Department of Construction and Civil Engineering
4
Lviv Polytechnic National University, Department of building production
5
Lviv Polytechnic National University, Department of building production

The article shows the relation between sustainability and cement manufacture that can be obtained by the replacement of clinker with limestone additive. This decreases the use of energy resources and reduces CO2 emissions in cement production. The issue of partial Portland cement clinker substitution by finely ground limestone in the production of market-oriented types of cement type CEM II is solved on the cement plant PJSC "Ivano-Frankivsk Cement". The indexes of physical-mechanical tests of certified Portland limestone cement with high early strength CEM II/A-LL 42.5 R produced by PJSC "Ivano-Frankivsk Cement" are given. Finely dispersed limestone in Portland-composite cements with slag promotes a more complete synergic effect. It is established, that rapid-hardening blended Portland cements with limestone powder provide technological, technical, ecological, and economic effects in the production of prefabricated and monolithic reinforced concrete.

Portland limestone cement
limestone powder
dispersion
high early strength
physical and mechanical properties

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