Novel material i.e. magnesium phosphate cement (MPC) as repairing material in roads and buildings

Abstract

Abstract Repairing materials for the construction has become the frequent topic of discussion now-a-days. The abundant number of concrete structures and hot-mix asphalt roads requires a massive demand of repairing materials. Instead of replacing the whole damaged structure, the feasible thing to do is by using the good repairing material considering the economic benefits. As, these days the most commonly used material for repair is polymer mortars and ordinary Portland cement (OPC) as these materials are temperature sensitive and hence, they degrade so there is demand in industry to replace these materials by some novel materials which can sustain harsh weather conditions and one such material in the current context is found to be Magnesium Phosphate cement (MPC) which can replace the ordinary Portland cement (OPC). Magnesium phosphate cement (MPC) is chemically bonded phosphate ceramic which is made by an acid-base reaction and generally the basic material is cationic metal and acidic one is phosphate and generally this process is expensive but there is a possibility of obtaining a MPC made by the low- grade magnesium oxide which can be acquired by calcination of natural magnesite. In this way, we can improve the structures by using new improved materials which in turn will reduce the costs of repairs in the long term in the building and transportation sector. In the present study, a systematic review for replacing ordinary Portland cement (OPC) by magnesium phosphate cement (MPC) is presented with detailed investigation.