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Influence of Rheological Active Additives on the Properties of Self-compacting Concrete

Journal of Wuhan University of Technology(Materials Science) 2021年第3期36卷 381-386页

作者： abbas guvalov Saida abbasova Azerbaijan University of Architecture and Construction Azerbaijan

The effect of rheological-active additives on the properties of cement suspensions and self-compacting concrete mixtures have been *** order to increase the rheological matrix and provide high fluidity,stone powders were used during the crushing of local mountain rocks in self-compacting *** into account the high dispersion of rheological-active additives,highly effective plasticizers were used to regulate the reotechnological properties of cement-based *** effect of sulfonaphthalen-formaldehyde oligomer and polycarboxylate-based hyperplasticizer on rheological properties of cement systems as plasticized additive on methodology proposed by V Kalashnikov was *** flow rate of cement suspension is determined by means of mini-viscosimeter,spreading of cement-sand mortar by means of Hegermann cone,and the slump of concrete mixture by means of Abraham’s *** the basis of obtained results,it was determined that limestone powder was more efficient than other stone ***,when adding 40%limestone powder to the mixture,the compressive strength of the samples taken from self-compacting concrete mixture increases by 15%-30%compared to the control *** optimal quantities of rheological-active additives and plasticizers have been identified and the possibility of obtaining high-strength self-compacting concrete based on them has been confirmed.

关键词： polyfunctional cement stone powder hyperplasticisers rheology matrix dispersion aggregate

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