Abstract: A process of manufacturing NH2-MIL-125(Ti) for use in mitigating ingress of chlorine ions in concrete, comprising dissolving 2-amino-benzene dicarboxylic acid in a 1:1 ratio of dimethylformamide and methanol, adding a titanium (IV) isopropoxide to the mixture at 150° C. with constant stirring to form NH2-MIL-125(Ti), submerging the NH2-MIL-125(Ti) in dichloromethane for about 3 hours and separating the NH2-MIL-125(Ti). NH2-MIL-125(Ti) produced is activated and ready for use in cement-based concrete structures. NH2-MIL-125(Ti) is enabled to reduce the ingress of chlorine ions in concrete by at least 20%.

Abstract: A system and a method for concrete production is disclosed. In some implementations, the method comprises the steps of mixing of a calcium carbide residue (CCR) and ordinary Portland cement (OPC) to produce a CCR-OPC blended concrete, incorporating the CCR-OPC blended concrete in its fresh or hardened state to a carbonation chamber for accelerated carbonation curing, and producing a carbonated CCR-OPC blended concrete after the accelerated carbonation curing. The CCR-OPC blended concrete is exposed to a carbon dioxide (CO2) gas to promote a plurality of properties. The system includes a blending module and a carbonation chamber. The blending module mixes CCR and OPC to produce a CCR-OPC blended concrete, and the carbonation chamber performs accelerated carbonation curing of the CCR-OPC blended concrete in its fresh or semi-hardened state to produce a carbonated CCR-OPC blended concrete.