Relations between strength and microstructure or pore size distribution

2 Relations between strength and microstructure or pore size distribution 

There are several indications that the compressive strength does not depend solely on porosity. In general, procedures that accelerate early reaction and 

These results suggest that, in attempts to relate strength to porosity, the total water porosity should not be used, the capillary or free water porosity or the volume of pores above a certain size being more appropriate. Parrott and Killoh (P30), in relation to their modelling of properties, similarly considered the volume, size and continuity of the larger pores to be the relevant quantities. 

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