10-14-2014, 10:56 AM
Procedures for Identifying Good Quality Sand During Construction
Good quality sand can be identified easily by taking a handful and closing your fist around it. Any form of contamination like mud will stick to your palm. The presence of clay, grit, pebbles or dirt could be harmful in construction. They need to be screened or sieved from the sand before use.
A slightly more scientific method could be to fill half a glass tumbler with sand, add water into the tumbler and stir. Any form of contamination could result in the water turning muddy. As a rule, if the content of mud or dust exceeds 4% of the total quantity of sand, the sand would be washed clean before use. In short, sand should not contain clay, dirt, mica or sea shells.
Wet Sand and Associated Problems
Sand should not contain water. Generally, if the sand contains about 5% of water, then use 25% additional quantity of sand for construction. Sometimes construction labourers add too much water which is detrimental to durable construction.
Good quality sand can be identified easily by taking a handful and closing your fist around it. Any form of contamination like mud will stick to your palm. The presence of clay, grit, pebbles or dirt could be harmful in construction. They need to be screened or sieved from the sand before use.
A slightly more scientific method could be to fill half a glass tumbler with sand, add water into the tumbler and stir. Any form of contamination could result in the water turning muddy. As a rule, if the content of mud or dust exceeds 4% of the total quantity of sand, the sand would be washed clean before use. In short, sand should not contain clay, dirt, mica or sea shells.
Wet Sand and Associated Problems
Sand should not contain water. Generally, if the sand contains about 5% of water, then use 25% additional quantity of sand for construction. Sometimes construction labourers add too much water which is detrimental to durable construction.