water retentivity

That property of a mortar which prevents the rapid loss of water by absorption to masonry units; prevents bleeding or water gain when mortar is in contact with relatively impervious units.

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References in periodicals archive ?

This study describes the effects of PAM on the saturated hydraulic conductivities and the soil water retentivity of a number of coarse-textured soils.

Water retentivity was determined using standard pressure plate apparatus.

Oral presentations 2002 Soil and Water Conservation Society

Using the water retentivity and hydraulic conductivity curves of Moore, which he extrapolated to low water contents, and the soil water diffusivity defined by Childs and Collis-George, he estimated the components of the soil water diffusivities in the liquid and vapor phases for isothermal conditions.