După ce construcția betonului este finalizată, este nevoie de mult timp pentru a menține perioada, dar adesea după perioada de întreţinere, there will still
Beton: is a collective term for engineering composites made of cementitious materials that glue aggregates into a whole. The term concrete is usually used to
Cement concrete is a porous system, these pores will directly affect the performance and service life of concrete, so in the preparation of concrete will
Classification by cementitious materials Inorganic cementitious material concrete, such as cement concrete, gypsum concrete, silicate concrete, water glass concrete, etc.; Organic cementitious material concrete, such