Some companies do recycle products. However a manufacturing company's first concern is to make a profit, so it will acquire its raw materials from the cheapest source. With materials still being plentiful, companies are often in the position that they have to use virgin materials as they are cheaper.
You can recycle many materials, including plastic and metal materials and even construction and demolition materials. Recycling can be as simple as putting recyclable materials in the appropriate containers each and every day. Additionally, there are many recycling companies that make it their top priority to get others to recycle and support communities and other organizations in spreading awareness for recycling and the effects it has on the overall environment.
Raw materials that are a component in concrete, aggregates are inert granular materials such as sand, gravel or crushed stone. Coarse aggregates are particles greater than 4.75mm, but they generally range between 9.5mm to 37.5mm in diameter. Primary coarse aggregates come from the land or water. Secondary aggregates are the by-products of extractive operations. The third source coarse aggregates come from is recycled aggregate, which is sand, and recycled concrete aggregate.
fine and coarse aggregates
Kamran Majidzadeh has written: 'Power plant bottom ash in black base and bituminous surfacing' -- subject(s): Aggregates (Building materials), Bituminous materials, Testing 'State of the art' -- subject(s): Aggregates (Building materials), Bituminous materials
Ward R. Malisch has written: 'Aggregates for concrete' -- subject(s): Aggregates (Building materials), Concrete
Mark G. Alexander has written: 'Aggregates in concrete' -- subject(s): Aggregates (Building materials), Concrete
Eugene Yuching Huang has written: 'An annotated bibliography on the geometric characteristics of mineral aggregates for pavement purposes' -- subject(s): Bibliography, Aggregates (Building materials), Road materials 'An improved particle index test for the evaluation of geometric characteristics of aggregates' -- subject(s): Testing, Aggregates (Building materials), Road materials 'Manual of current practice for the design, construction, and maintenance of soil-aggregate roads' -- subject(s): Design and construction, Macadamized Roads, Roads, Roads, Macadamized
people recycle and the recycled materials get burned and reused.
Robert M. Burchfield has written: 'Alternate methods of supplying the Oregon coast with construction aggregates' -- subject(s): Aggregates (Building materials), Roads, Materials, Design and construction
N. M. Finkbiner has written: 'A state-wide survey of aggregates' -- subject(s): Aggregates (Building materials)
Chen Chang has written: 'Evaluation of selected marginal aggregates stabilized with cement' -- subject(s): Aggregates (Building materials)