Differences in Grades of Limestone | Port Aggregates
Apr 19, 2019· Riprap can also be used to form lowlying or dividing walls for plants. A pea gravel is typically used for footpaths or gardens, due to its finely crushed texture. Larger grades of crushed limestone like #57G are typically used to make base layers for these walkways, or as a landscaping filler to surround paving stones.