Experimental Investigation of the Thermo-Mechanical and Chemical Behavior of Mixed Portland Cement-Calcium Sulfoaluminate Mortar under Thermal Cycles | ||
| نشریه مهندسی عمران و محیط زیست | ||
| Article 7, Volume 55, Issue 119, 2025, Pages 87-96 PDF (5.43 M) | ||
| DOI: 10.22034/ceej.2025.67180.2435 | ||
| Authors | ||
| Amirhossein Moharrer* 1; Fatah Peiravian2; Mohammad Jahani3 | ||
| 1Department of Civil Engineering Technical and Vocational University (TVU), Tehran, Iran, Concrete & Composite Unit Consultant, Shiraz-Eskan Precast Concrete Technology Factory | ||
| 2Chairman of the Board, ShirazEskan Precast Concrete Technology Factory and ShirazEskan Company | ||
| 3Department of Civil Engineering, University of Hormozgan, Concrete & Composite Senior Specialist, Shiraz-Eskan Precast Concrete Technology Factory | ||
| Abstract | ||
| The development of rapid-setting cementitious materials is pivotal for modern construction, particularly in precast concrete technology. Calcium sulphoaluminate (CSA) cements have gained attention due to their accelerated hydration kinetics, enabling earlier initial and final setting compared to ordinary Portland cement (OPC). This study investigates the mechanical and chemical behavior of Portland-CSA blended mortars under thermal cycling, addressing the need for durable, high-performance materials in thermally fluctuating environments. CSA cements, characterized by high alumina (Al₂O₃) and sulphoaluminate phases, promote rapid strength development via the formation of ettringite (AFt) and stable hydrates. However, their long-term stability under thermal stress remains underexplored. This research evaluates two CSA types (IRC40, IRC50) blended with OPC, focusing on compressive strength evolution, thermal resistance, and phase composition. By analyzing performance before and after 24 thermal cycles (up to 110°C), the study aims to optimize CSA-OPC synergies for precast applications, balancing economic feasibility with enhanced durability. | ||
| Keywords | ||
| Calcium sulfoaluminate cement; Mechanical properties; Thermal stress; Chemical analysis; Rapid-setting mortar | ||
| References | ||
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