Mass of rock, gravel, sand, soil particles, or of minerals in a rock
Crystal aggregate (lapis lazuli from Afghanistan)
Construction aggregate (a gravel pit in Germany)
Soil aggregate in Spain
In the Earth sciences , aggregate has three possible meanings.
In mineralogy and petrology , an aggregate is a mass of mineral crystals, mineraloid particles or rock particles.[ 1] [ 2] Examples are dolomite , which is an aggregate of crystals of the mineral dolomite ,[ 3] and rock gypsum , an aggregate of crystals of the mineral gypsum .[ 4] Lapis lazuli is a type of rock composed of an aggregate of crystals of many minerals including lazurite , pyrite , phlogopite , calcite , potassium feldspar , wollastonite and some sodalite group minerals.[ 5]
In the construction industry, an aggregate (often referred to as a construction aggregate ) is sand , gravel or crushed rock that has been mined or quarried for use as a building material .
In pedology , an aggregate is a mass of soil particles. If the aggregate has formed naturally, it can be called a ped ; if formed artificially, it can be called a clod.[ 6]
Construction aggregate examples
Use in industry
Aggregates are used extensively in the construction industry[ 9] [ 10] Often in making concrete , a construction aggregate is used,[ 4]
with about 6 billion tons of concrete produced per year.[ 11]
See also
References
^ Neuendorf, K.K.E.; Mehl, J.P. Jr.; Jackson, J.A., eds. (2005). Glossary of Geology (5th ed.). Alexandria, Virginia: American Geological Institute. p. 11.
^ Abel, Mara; Lorenzatti, Alexandre; Rama Fiorini, Sandro; Carbonera, Joel (2015). Ontological analysis of the lithology data in PPDM well core model . PNEC Conferences. Houston. p. 3. Retrieved 27 March 2017 .
^ Teichert, Curt (1965). Devonian Rocks and Paleogeography of Arizona (US Geological Survey Professional Paper 464) (PDF) . Washington DC: USGS . p. 150.
^ a b Jessica Elzea Kogel (2006). Industrial Minerals & Rocks: Commodities, Markets, and Uses (7th ed.). SME. p. 522. ISBN 978-0-87335-233-8 .
^ T. Calligaro; Y. Coquinot; L. Pichon; B. Moignard (2011). "Advances in elemental imaging of rocks using the AGLAE external microbeam". Nuclear Instruments and Methods in Physics Research B . 269 (20): 2364–2372. Bibcode :2011NIMPB.269.2364C . doi :10.1016/j.nimb.2011.02.074 .
^ Allaby, Ailsa; Allaby, Michael (1999). A Dictionary of Earth Sciences (2nd ed.). Oxford: Oxford University Press. ISBN 0-19-280079-5 .
^ Same Day Aggregates: Types of Aggregates - Same Day Aggregates , accessdate: March 25, 2017
^ Indiana Mineral Aggregates Association | Carmel, IN: What are aggregates? - Indiana Mineral Aggregates Association | Carmel, IN , accessdate: March 25, 2017
^ Introduction (1): What are Aggregates? « Herefordshire & Worcestershire Earth Heritage Trust: Introduction (1): What are Aggregates? « Herefordshire & Worcestershire Earth Heritage Trust Archived 2019-02-09 at the Wayback Machine , accessdate: March 23, 2017
^ Define Aggregate at Dictionary.com: aggregate , accessdate: March 23, 2017
^ Qasrawi, Hisham; Marie, Iqbal (2013). "Towards Better Understanding of Concrete Containing Recycled Concrete Aggregate" . Advances in Materials Science and Engineering . 2013 : 1–8. doi :10.1155/2013/636034 .
External links