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Poly(carboxylate ether)-based superplasticizer achieves workability retention in calcium aluminate cement

Akhlaghi Baghoojari, Omid and Menceloğlu, Yusuf Z. and Akbulut, Özge (2017) Poly(carboxylate ether)-based superplasticizer achieves workability retention in calcium aluminate cement. Scientific Reports, 7 . ISSN 2045-2322

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Official URL: http://dx.doi.org/10.1038/srep41743

Abstract

Calcium aluminate cement (CAC) suffers from loss of workability in less than an hour (~15 minutes) after first touch of water. Current superplasticizers that are utilized to modify the viscosity of cement admixtures are designed to target ordinary Portland cement (OPC). The high affinity between these superplasticizers and cement particles were found to be detrimental in CAC systems. Utilization of a monomer that, instead, facilitates gradual adsorption of a superplasticizer provides workability retention. For the first time in literature, we report a superplasticizer that caters to the properties of CAC such as high rate of surface development and surface charge. While neat CAC was almost unworkable after 1 hour, with the addition of only 0.4% of the optimized superplasticizer, 90% fluidity retention was achieved.

Item Type:Article
Subjects:T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
ID Code:33266
Deposited By:Özge Akbulut
Deposited On:09 Sep 2017 16:32
Last Modified:09 Sep 2017 16:32

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