Effect of Antifreeze on the Low-Temperature Properties of Magnesium Phosphate Cement Concrete

Magnesium phosphate cement concrete (MPCC) has high early strength, which is conducive to achieving rapid repair of winter concrete pavements under no-maintenance conditions. In this paper, we investigated the influence mechanism of four cement antifreeze components on the mechanical and durability properties of MPCC under the severe cold environment, focusing on the development law of the performance of MPCC as a rapid repair material for pavements. The results show that the antifreeze effect of MPCC antifreeze components under severe cold environments is contrasted as MgCl 2 > Mg (NO 3 ) 2 > Ethylene glycol > Mg (NO 2 ) 2 . However, the addition of antifreeze components, especially inorganic salt antifreeze components, will also have an adverse effect on the antifreeze resistance of concrete during the service period.