Raj Sahu 02/07/2010 07:06:52 Later Strength Hi, What are the possible reasons for low strength gain from 7 to 28 days? Bhaskar Agate 02/07/2010 14:10:47 Hi,Rate of hydration of C3S and C2S and their ration could be one of the reason.If any one has done R&D work on these lines that may pl.be shared. Bhaskar Agate