pozzolanic cement sentence in Hindi

Examples

1. The setting of pozzolanic cements has much in common with setting of their modern counterpart, Portland cement.
2. At present, there is no way of ascertaining what water / cement ratios the Romans used, nor are there extensive data for the effects of this ratio on the strengths of pozzolanic cements.
3. Although different forms of cement already existed ( Pozzolanic cement was used by the Romans as early as 100 B . C . and even earlier by the ancient Greek and Chinese civilizations ) and were in common usage in Europe from the 1750s, the discovery made by Aspdin used commonly available, cheap materials, making concrete construction an economical possibility.