From Wikipedia, the free encyclopedia
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