Civil Engineering - Building Materials - Discussion

What is false setting reaction?

Water reacts with cement is true, but it is dicalcium silicate is the wrong one you predicted, its made up of 4 contents, dicalcium silicate, tricalcium silicate, tricalcium aluminate and tetracalcium alumino-ferrate. Dicalcium silicate gives the strength up to last stage, while tricalcium silicate gives the strength in initial phase like upto firth some days, while tricalcium silicate react instantly as false setting but its role in giving strength is very poor. Mainly dicalcium silicate and tricalcium silicate gives the strength to the concrete in later stage and initial stage respectively. But false setting reaction first is done by tricalcium aluminate.

Water react with cement. It is a dicalcium silicate. Then why it is tricalcium aluminate?