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Good sand should possess the following properties: 2.4.1 Functions of sand in mortar Sand is used in mortar and concrete for the following functions: 2.4.2 Substitutes for sand Sand has now become a scarce and costly material and extraction of river sand is now said to affect the ecological balance. The use of substitutes for […]
The increase in the volume of sand due to the presence of moisture is known as bulking of sand. This is due to the fact that moisture forms a film of water around the sand particles and this results in an increase in the volume of sand. The extent of bulking depends on the grading […]
Based on the grain size distribution, sand is classified as fine, coarse and gravelly.
Sand is formed by the weathering of rocks. Based on the natural sources from which sand is obtained, it is classified as follows: 2.1.1 Pit sand This sand is obtained by forming pits in soils. It is excavated from a depth of about 1-2 m from the ground level. This sand is found as deposits […]