concretebasics.org: your guide to cement & concrete

These are the cements manufactured by special techniques so as to achieve the potential strength nearer to the “intrinsic strength” of cement paste. These techniques reduce porosities to a considerable extent (from normal 20-30% to as low as 1.7%).

“Warm Pressing” means applying heat & pressure simultaneously.

Sometimes “Pressure Densification techniques” (which means applying pressure alone) can be adopted.

Compressive strength and tensile strength as high as 650MPa & 68MPa respectively can be achieved by these techniques.

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