The Influence of Size and Hardness of Sand Particles and their Proportions on the Skid Resistance of Cement Mortars

Paper by KOLLA AUGIZAKI TZINIERI from ISCR 6th 1990

irnestone and emery sands divided into 6 fractions, were used ,cast cement mortar specimens in PSV moulds. After 28-day ater curing the specimens were subjected to accelerated ilishing and their Skid Resistance Value (SRV) was measured ith the pendulum tester. Specimens of 100 % limestone or )0 % emery sand, of constant grading were prepared, together ith specimens of the same grading, but with one fraction at-a-ne being replaced by emery or limestone.is concluded, mat the finer fractions are more effective influencing me SRVs of mortars. It was thus possible. byplacing only the 0.297/0.149 fraction of a limestone sand withe same fraction of emery, to acquire a SRV about 90 % of the~V of mortar containing entirely emery sand.

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