The Introduction Of Concrete Materials
Concrete Materials is the overall engineering composite materials by gelled material to aggregate bond into, referred to as concrete, concrete we tell commonly refers to using cement as cementing materials, sand and stone as aggregate and water (with or without additive and admixture) according to certain proportion coordination, through mixing, molding, curing to cement concrete, also calls the ordinary concrete, this kind concrete in the construction of the civil engineering has been widely used.
The common concrete we generally named them cement concrete, Portland cement concrete these two kinds, they commonly are known as solid concrete.
Cement concrete: refers to the cement as the binder mix sand and gravel, water according to certain proportion coordination, after mixing, molding, form the man-made stone under room temperature or steam curing. The volume density of ordinary cement concrete, as a general rule, is 2400 kg/m3.
Silicate concrete: refers to the siliceous material mixe sand, fly ash and lime, cement and other calcareous materials according to certain proportion coordination, after mixing, molding, form the man-made stone under in a certain temperature, humidity. The volume density of ordinary Portland concrete generally is 1600 ~ 1600 kg/m3.
In addition, we put the hole using light raw materials or used in place of the ordinary concrete called lightweight concrete, concrete materials in light of the concrete volume density generally is 800 ~ 800 kg/m3, are composed of light ceramsite, expanded perlite, etc as raw material.
Another kind of concrete for the porous concrete, is refers to the internal contains a lot of small closed pores and contains no aggregate of lightweight concrete. Its main raw material through the levigated then can be put into production processing, the volume density is generally less than 1000 kg/m3.