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What Is A Crusher Run?

Crusher Run is primarily used as a compacted sub-base material. It is a mixture of coarse and fine aggregate that forms a solid, level base of support. Crusher Run is typically placed underneath driveways, concrete slabs, and structural foundations.

• For driveway installation, a foundation of crusher run can add years to your driveway’s life. The durable and compact nature of the material will prevent the surface material from developing potholes, cracking, or shifting under heavy pressure from vehicle traffic and the elements.

• For masonry work, such as installing stone pavers or retaining walls, crusher run provides a solid foundation that keeps heavy stone materials in place.

• When excavating to install underground utilities such as pipes, cables, and conduit, crusher run acts as a reliable backfill that holds soil and the installed utilities in place.

What Is AASHTO?

The American Association of State Highway and Transportation Officials (“AASHTO”) has developed standards for using aggregate in highway construction and for general use. Aggregate is classified according to a broad range of AASHTO sizes including sand, gravel, crushed stone, large stone, slag, and recycled concrete. In construction, aggregate is used in many ways, including as a load bearing material, a filling material, and an infiltrating material.

•  In roads and railway ballast, aggregate is used to resist the overall (static as well as dynamic) load, to distribute the load properly to the supporting ground, and to drain the water from the surface.

• In concrete, aggregate is used for economy, to reduce shrinkage and cracks, and to strengthen the concrete.

• In water filtration, pipeline construction, and sewage treatment processes, aggregate is used to screen, filter, and drain water, and to provide a load bearing bedding.

What Is Rip Rap?

The term “Rip Rap” describes a size range of aggregate that is 4” and larger. Rip Rap is very durable and natural looking due to its size, and is typically placed along shorelines, waterways, bridge foundations, steep slopes, and other locations to protect from scour and erosion. The proper sizing of Rip Rap to be used depends on several factors including the steepness of the slope, access requirements, and exposure to the elements. As an example, larger Rip Rap is used where a structure or shoreline is continuously exposed to rushing water, including:

•  Along a lake shoreline to limit erosion associated with wave action.

•  Along the outer bank of a river bend, dissipating the force of the water against the bank.

•  Near bridges along embankments and adjacent to supports in waterways.

BENEFITS OF LIMESTONE AND SANDSTONE

Two of the most common sedimentary rocks, limestone and sandstone, can be purchased at the Hog Lick Quarry, which is conveniently located in Marion County, just 3 miles off of the I-79 White Hall exit in Fairmont, WV.

Hog Lick Aggregates’ Stone Types

Limestone is a sedimentary rock composed mainly of calcium carbonate, usually in the form of calcite and aragonite. Limestone has a variety of uses including construction, road material, and water treatment.
Sandstone is a sedimentary rock that consists of sand or quartz grains compressed together. Known for being one of the most common types of sedimentary rock, sandstone is used primarily in construction, cement, and environmental remediation.

Limestone and Sandstone for Construction

Limestone and sandstone are used as building materials and to make cement when crushed into powder form. In the construction of roads and foundations, these materials are used to create a stable base prior to paving with asphalt, pouring concrete, or covering with gravel. Limestone and sandstone are the most popular natural construction materials due to their density and extremely durable rock composition.

Limestone and Sandstone for Water Treatment and Environmental Remediation

Many wells have acidic water (low pH) that may also contain high amounts of iron or iron byproducts. Limestone aids by increasing the pH of the acidic water, and by removing iron and other material. In certain environmentally sensitive areas, it is important not to change the pH of a water source or the surrounding soil. In such instances “pH neutral” sandstone can be used to have negligent impact on the existing pH of the environment.

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