· In contrast to crushed stone, gravel features rounded edges rather than sharp, unfinished edges. It gets its shape and rounded edges from natural erosion and weathering processes. Crushed stone, on the other hand, is quarried and crushed to a specified size depending on its intended use. Gravel Sizes. Gravel Sizes vary according to the types of commercial, construction and landscaping .
· Fine Aggregates are usually sand or crushed stone that are less than in diameter. When the aggregate is sieved through sieve, the aggregate passed through it. Natural sand is generally used as fine aggregate, silt, stone dust and clay also come under this egory. The purpose of the fine aggregate is to fill the voids in the coarse aggregate and to act as .