Gravel v. Sand| Pool Spa News
Jan 28, 2011· Clean, crushed blue stone ¾inch or smaller is the best type of gravel to use with a fiberglass pool because it has several distinct advantages over sand. First, its properties do not change when it becomes saturated with water, so it performs the same wet or dry.
Sand and Gravel As Compared to Crushed Concrete for a ...
However, the sand and gravel mixture has a uniform granular size throughout its volume, creating less adhesion between the granules. As a result, sand and gravel subbases are weak compared to a crushed concrete layer. Crushed Concrete. Concrete consists of cement paste and aggregates, such as crushed stone, gravel or sand.
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