HOW TO CHECK SAND QUALITY IN FIELD? . There are some useful | Ethio Construction
HOW TO CHECK SAND QUALITY IN FIELD?
.
There are some useful tests that can be done in the field for checking
the quality of sand utilized for construction. The
following tests may
be performed to determine the characteristics of
sand.
FIELD TEST OF SAND:
1. Take a glass and add some water in it.
2. Add a few amount of sand in the glass. At that
point, shake it vivaciously and permit it to settle. If there is clay present in the sand, an apparent layer will be formed at the top level of sand.
3. Mix the sand into sodium hydroxide or caustic soda solution to
distinguish the presence of organic impurities.
If organic impurities
are present in the sand, the color of the solution
will be turned into brown.
4. Now take a squeeze of sand and taste it. If it is
salty that means salt is present in the sand.
5. Take little amount of sand in the hand, and then
rub it against the
fingers. If the fingers are recolored it means sand
consists of some
earthy materials.
6. The color of sand describes the cleanness of
sand. The size and sharpness might be examined by touching and
watching visually.
7. The sand may be examined by mechanical
analysis to know its
fineness, durability, void ratio etc.
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