TMT Steel rebars increase the tensile strength of concrete.
They have lesser impurities and hence have more uniform strength.
Steel & concrete have similar temperature coefficients, making them expand contract together and help in bonding.
Lower grades of rebars are twisted at cold temperature to increase their strength. Whereas, there is no twisting during TMT so torsional stress cannot form surface defects in TMT bars. Hence, TMT bars resist corrosion better than cold, twisted and deformed (CTD) bars.
