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JOURNALS // Bulletin of National University of Architectur and Construction of Armenia // Archive

Bulletin of National University of Architectur and Construction of Armenia, 2020, Issue 2, Pages 86–91 (Mi nuaca284)

Constructing

Development of sulfate-resistant cement on the base of Kapan copper molibdenum plant

A. S. Meymaryan, N. V. Chilingaryan, H. A. Sargsyan, S. K. Khachatryan

National university of architecture and construction of Armenia

Abstract: In order to obtain corrosion-resistant - in particular sulfate-resistant cement, the sources of raw materials of the Republic of Armenia has been investigated. It was revealed that for the production of such cements, the most favorable aluminosilicate component is the waste of Kapan Copper Molybdenum Plant, and David Bek deposit limestone as a carbonate component. Based on these components, compositions of raw mixtures have been developed. The optimal composition was selected. The X-ray phase study of the cakes of the calcined composition revealed reflections of the mineral $C_{3}A$, as the main source of sulfate corrosion, which is a consequence of the action of basalt used as a mineralizer and contributes to changes in clinker composition.By testing the corrosion resistance of the obtained cements in solutions containing sulfate ions $(Na_{2}SO_{4}~ and ~ MgSO_{4})$, the values of the resistance coefficient at the age of six months were revealed, which ranges from 0,89 to 0,90, and indicates a rather high sulfate resistance of the developed cement.

Keywords: copper molybdenum plant waste, raw mix, mineralogical composition, mineralizer, sulfate-resistant clinker, corrosion resistance coefficient, solutions containing sulfate ions.

UDC: 666․942․8

Received: 04.07.2020
Accepted: 27.07.2020

Language: Armenian



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