Performance of SIMCON in Structural Retrofitting Under Freeze–Thaw Exposure

Authors : Ömer Karagöz, Serdal Ünal, Kerem Aybar, Mehmet Canbaz

Pages : 100-108

Doi:10.51764/smutgd.1759647

View : 69 | Download : 119

Publication Date : 2025-12-12

Article Type : Research Paper

Abstract :This study investigates the freeze-thaw (F-T) durability and mechanical performance of Slurry Infiltrated Mat Concrete (SIMCON) produced with two different binders, Portland cement (CEM I 42.5R) and calcium aluminate cement (CAC). SIMCON composites were fabricated by infiltrating cement pastes into randomly oriented steel wool mats, aiming for improved fiber distribution and matrix-reinforcement interaction. Specimens were subjected to 0, 15, and 30 F-T cycles and evaluated on the basis of unit weight, ultrasonic pulse velocity (UPV), flexural strength, and compressive strength. The results showed that all properties deteriorated with increasing number of cycles; however, CAC-based composites consistently outperformed their CEM I counterparts. After 30 cycles, CAC specimens retained 54% higher compressive strength and exhibited slower deterioration rates in UPV and flexural strength. The superior performance of CAC is attributed to its denser, more stable microstructure and its improved resistance to internal cracking and moisture damage. These findings demonstrate that CAC is a promising binder for SIMCON in infrastructure and retrofit applications exposed to harsh environmental conditions where long-term durability is critical.
Keywords : SIMCON, Donma-Çözülme Dayanımı, Kalsiyum Alüminat Çimentosu (CAC), Lifli Beton Kompozitler, Yapısal Güçlendirme Malzemesi

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