Reactive Transport Modelling of Chloride Ingress in Saturated Coral Aggregate Concrete

Utilizing coral aggregate concrete (CAC) for construction on remote islands can significantly reduce cost and period, CO 2 emission, consumption of non-renewable energy. The durability reinforced CAC structures is critically influenced by their resistance to chloride attack. In this study, a reactive transport modelling was developed investigate ingress in CAC, which COMSOL-PHREEQC interface based MATLAB language established. experiment from the literature taken as benchmark example. results show that numerical model accurately predict CAC. Differing ordinary (OAC), Kuzel’s salt does not appear cement hydrate compounds during ingress. indicate penetration depth gradually increases exposure time prolonged. When exposed an external solution, decrease pH pore solution affects precipitation Friedel’s salt, detrimental chemical binding chloride.