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Molecular formula : MW : CAS :
nature : generally refers mainly to cement cementitious material, with water, sand, gravel and, if necessary incorporation of chemical additives and mineral mixture and tie with an appropriate ratio, after homogeneous mixing, forming dense conservation sclerosis and from man-made stone. Concrete is divided into two main stages with the state : condensation on the plastic hardened former state that the new mix concrete or concrete mixer; After hardening the hard state that the hardening of concrete or concrete. The strength of the concrete compressive strength rating based on the standard value cube division, China's general strength of the concrete grading for the 12 : meter, 10, C20, C30, C35, C40, C45, C50, C55 and C60, etc..
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