Crushed Stone or Angular Rock

Crushed stone or angular rock is the world’s most basic mineral commodity. It is abundant, widely available, and inexpensive. It is a material that people are familiar with in almost all parts of the world. Most people have a hard time imagining how four tons of crushed stone were used in the past year for their benefit. That amounts to about twenty pounds of crushed stone per person per day for the entire year.

 

Crushed Stone or Angular Rock 

Crushed stone or angular rock is a form of construction aggregate, typically produced by mining a suitable rock deposit and breaking the removed rock down to the desired size using crushers. It is distinct from gravel which is produced by natural processes of weathering and erosion, and typically has a more rounded shape.

 

Crushed Stone Uses

Angular crushed stone is the key material for macadam road construction which depends on the interlocking of the individual stones’ angular faces for its strength. Crushed natural stone is also used similarly without a binder for riprap, railroad track ballast, and filter stone. It may be used with a binder in a composite material such as concrete, tarmac, or asphalt concrete. Most crushed stone is used in highway construction and building construction.

 

 

Crushed Stone Background

Stone crushed is a major basic raw material used in construction, agriculture, and other industries. Despite the low value of its basic products, the crushed stone industry is a major contributor to and an indicator of the economic well-being of a nation. The demand for crushed stone is determined mostly by the level of construction activity, and, therefore, the demand for construction materials. High-purity limestone and dolomite suitable for specialty uses are limited in many geographic areas. Crushed stone substitutes for road building include sand and gravel, and slag.  

 

Competitive Price of Crushed Stone

Crushed stone or angular rock  is a high-volume, low-value commodity. The industry is highly competitive and is characterized by many operations serving local or regional markets. Production costs are determined mainly by the cost of labor, equipment, energy, and water, in addition to the costs of compliance with environmental and safety regulations. These costs vary depending on geographic location, the nature of the deposit, and the number and type of products produced. Crushed stone has one of the lowest average by weight values of all mineral commodities.

 

Crushed Stone Automation Production

Increased productivity achieved through increased use of automation and more efficient equipment was mainly responsible for maintaining the prices at this level. Transportation is a major factor in the delivered price of crushed stone. The cost of moving crushed stone from the plant to the market often equals or exceeds the sale price of the product at the plant. Because of the high cost of transportation and the large quantities of bulk material that have to be shipped, crushed stone is usually marketed locally. The high cost of transportation is responsible for the wide dispersion of quarries, usually located near highly populated areas.

 

Landscape Use

Crushed stone or angular rock is used in landscape design and gardening for gardens, parks, and municipal and private projects as a mulch, walkway, path, and driveway pavement, and cell infill for modular permeable paving units. As a mineral mulch its benefits include erosion control, water conservation, weed suppression, and aesthetic qualities. It is often seen used in rock gardens and cactus gardens.

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Sources

en.wikipedia.org/wiki/Crushed_stone

geology.com/articles/crushed-stone/