Title:
Measurement and Characterization of Chloride Transport Properties for Belitic Calcium Sulfoaluminate (BCSA) Cement Concrete
Author(s):
Rahman
Publication:
Web Session
Volume:
ws_F23_Adnan.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
10/29/2023
Abstract:
Belitic calcium sulfoaluminate (BCSA) cements are alternative cements with rapid strength-gaining properties, which favor their use for infrastructure repair. Recently, BCSA’s low embodied carbon generated interest in its use for structural concrete. However, knowledge gaps around its engineering properties and durability limit its practical adoption. This research investigates chloride penetrability in BCSA cement, which has been questioned in recent literature. We use qualitative (electrical) and quantitative (diffusion-based) tests to measure chloride transport properties for a range of BCSA cement concretes. Qualitative test results suggest BCSA cements are more resistant to chloride penetration that portland cement (PC), but these results do not correlate with quantitative diffusion coefficients—probably due to changes in pore solution chemistry. Results also suggest that BCSA cements may have lower chloride binding capacity than PC. However, these results mainly indicate a need for more suitable testing protocols for chloride penetrability in non-PC systems.