The thaumasite sulfate attack(TSA)of water glass-slag cement,ordinary Portland cement with10%(by mass)of limetsone and the effects of fly ash and silica fume on TSA of water glass-slag cement were studied.The erosion products after immersed in 5%(by mass)MgSO4solutions for four years at 5℃were analyzed by means of X-ray diffraction(XRD)and Fourier transform infrared spectroscopy(FTIR).The pore structure of hardened paste of water glass-slag cement was tested by mercury intrusion method.The results show that...