Affiliations: Department of Chemical Engineering, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, Istanbul, Turkey
Correspondence:
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Corresponding author: Emek Moroydor Derun, Yildiz Technical University, Davutpasa Campus, Faculty of Chemical and Metallurgical Engineering, Department of Chemical Engineering, Davutpasa Street No.127, 34220 Esenler, Istanbul, Turkey. Tel.: +90 212 3834758; Fax: +90 212 3834725; E-mails: moroydor@gmail.com, moroydor@yildiz.edu.tr.
Abstract: In this study, the influences of air-entraining, set accelerating and superplasticizer admixtures on the properties of borogypsum containing cement mortars were investigated. According to results, by using 3% borogypsum and water/binder ratio of 0.45, the compressive and flexural strength values were increased up to 196.38%. The usage of various ratios of air-entraining and set accelerating admixtures showed reverse effects on the compressive and flexural strength. However, 0.4% superplasticizer containing mortars had 65.39 MPa compressive strength and 9.08 MPa flexural strength which were 33.12% and 26.82% higher than the reference. Durability test results showed addition 3% borogypsum provided endurance to sulfate attacks up to 30 days.
Keywords: Borogypsum, chemical admixtures, durability, mortar
