Title:
Replacing Portland Cement in Engineered Cementitious Composites with Calcium Sulfoaluminate Cement
Author(s):
Alvarado
Publication:
Web Session
Volume:
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
3/23/2024
Abstract:
Engineered cementitious composites (ECCs) are ideal for addressing infrastructure repair challenges with superior ductility and tensile strain capacity. ECCs outperform traditional concrete and could incorporate alternative, eco-friendly cement like calcium sulfoaluminate (CSA). CSA cement offers a lower carbon footprint, rapid setting, rapid strength gain, and good dimensional stability, making it ideal for rapid repairs. This research investigates the feasibility of replacing Portland cement (PC) with CSA cement in ECC while maintaining essential mechanical properties and improved shrinkage. ECCs were designed using 1.2 and 3.0 bottom ash-to-cement ratios, 1.5% polyethylene fiber by mixture volume, and the PC was partially or completely replaced with CSA cement. ECC, with no CSA replacement, was also designed for comparison purposes. The compression strength, flexural, and tensile strength of ECCs were tested and provided insights into the potential use of CSA as a sustainable material for infrastructure repair.