Influence of micafume product on the processes of the structure formation of the alkaline cement
Journal Title: Вісник Одеської державної академії будівництва та архітектури - Year 2017, Vol 1, Issue 68
Abstract
The influence of the micafume product of of auriferous ore flotation waste on the structure formation of alkaline slag cement was studied. It has been established that the additive in the form of a micafume containing product influence on structure formation of the process of hardening of slag-alkaline cement, which contributes to obtaining high operational and deformative properties of slag-alkaline cement, due to the synthesis of new formations in its composition in the form of hydrated aluminosilicate compounds. Studying of the cement properties showed that inserting dump tailings into the slag-alkaline cement composition allowed extending initial setting time and provide strength of viscid compositions at the level of the check sample compound. In this way, the insertion of admixture from 10 to 30% extends the initial setting time from 55 to 70 minutes and provides the early obtaining of branded cement strength at the level of the check sample compound: after 2 days, dump tailing cement compressive strength reaches 17.6...18.6 MPa, after 28 days - 39.9...41.7 MPa. Compositions of slag-alkaline cement were developed, containing auriferous ore flotation enrichment dump tailings in the range of 10...30%, which upon investigated properties meets the requirements of DSTU B.V.2.7-181:2009 that refer to alkaline cements of M400 types and can be recommended for production of concretes on their basis.
Authors and Affiliations
V. I. , Gotz, O. V. , Lastivka, I. I. , Rudenko, l. V. , Volynska
Keywords
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