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Fine sand: is the one that their grains happen through
a sieve of meshes of 1mm of diameter and are retained by another one of 0.25mm.
Average Sand: she is that whose grains happen through a sieve of 2.5mm of
diameter and are retained by another one of 1mm. heavy Sand: she is the one that
their grains happen through a sieve of 5mm of diameter and are retained by
another one of 2.5mm. Heavy grain sands give, generally, mortars more resistant
than the fine ones, although they have the disadvantage of needing much paste
conglomerated to fill up its hollows and to be adherent. In against game, mortar
is plastic, being this one very porous and little adherent. The kneaded one of
mortars is made removing and shaking the components of the mixture the times
necessary to obtain its uniformity. |
