Durability of calcium sulfoaluminate – portland cement blends

Author(s): Gultekin Ozan Ucal, Mehmet Kemal Ardoga, Melike Sucu, Tughan Delibas, Ismail Ozgur Yaman
Paper category: Proceedings
Book title: SynerCrete’18: Interdisciplinary Approaches for Cement-based Materials and Structural Concrete: Synergizing Expertise and Bridging Scales of Space and Time Vol. 1 & 2
Editor(s): Miguel Azenha, Dirk Schlicke, Farid Benboudjema, Agnieszka Jędrzejewska
ISBN: 978-2-35158-202-2
e-ISBN: 978-2-35158-203-9
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 407-412
Total Pages: 6
Language : English

Abstract: Calcium sulfoaluminate cement (CSAC) is a low-energy cement with lower carbon footprint than ordinary portland cement (PC), and it may be a better alternative in certain applications where rapid setting or shrinkage compensating properties are desired. In this study, performance of PC-CSAC blends were investigated by preparing eight sets of mortar and concrete blends with CSAC/PC ratios of 0/100, 5/95, 10/90, 20/80, 30/70, 40/60, 50/50, 100/0. Their alkali-silica reactivity was determined on mortar specimens, and drying shrinkage, compressive strength development, rapid chloride ion permeability, and porosity were investigated on concrete specimens. As a result of the experimental investigation, 100% CSAC showed properties superior to both 100% PC and blended mixtures in most of the determined properties. It was observed that although blending CSAC with PC increases the 1- Day strength of concrete, its later-age performance was adversely affected. It appeared that the blend with 30% CSAC had the lowest performance.

Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00