Sand is one of the most common construction materials nowadays. As you are an engineer in charge of a site, you should know how to check the sand quality on the field.
Field checking of sand is very important because by testing preliminary you get an idea of the sand quality. As a result, you can maintain the construction quality and assure your buyer/client to do the best job done for him.
Quality checking is a major issue in today's world as the number of impurities is increasing at an alarming rate in construction material as well as in sand.
To check the quality of sand to be used in construction, you can do the following field tests-
- Take some sand to be tested and mix it in a glass of water. Shake and mix the sand with water vigorously. Allow 10 to 15 minutes to settle the sand. As clay is not expected in the sand, if there is clay you will find a clay layer on the surface of the water.
- There may have organic impurities in the sand and to test that you need to mix the sand with Caustic Soda or Sodium Hydroxide. If any organic impurities present in the sand, the mixture will turn brown.
- Examine the sand by taking them on the palm of your hand and fingers. Feel the sharpness, angularity, hardness, presence of clay, the presence of foreign materials and dust. Then decide whether to use or not?
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