• Portlandite - Wikipedia

    en.wikipedia.org/wiki/Portlandite Portlandite is an oxide mineral.It is the naturally occurring form of calcium hydroxide (Ca(OH) 2) and the calcium analogue of brucite (Mg(OH) 2).. Occurrence. Portlandite occurs in a variety of environments. At the type location in Northern Ireland it occurs as an alteration of calc–silicate rocks by contact metamorphism of larnite–spurrite.It occurs as fumarole deposits in the Vesuvius area.
  • Portlandite - an overview | ScienceDirect Topics

    www.sciencedirect.com/topics/engineering/portlandite The carbonated portlandite showed a 38.4% weight loss due to the release of the CO 2 at 700°C (almost 40%, the maximum theoretical weight loss of pure calcite), indicating that all the calcium present in the sample, whether from portlandite or from other minor calcium compounds, was carbonated and revealed an extremely high carbonation ...
  • Portlandite – Virtual Museum of Molecules and Minerals

    virtual-museum.soils.wisc.edu/display/portlandite Portlandite is a mineral formed during the curing of concrete, also known as portland cement. It is a calcium hydroxide mineral, Ca(OH)2, and is quite common. Although the majority of portlandite is formed during the curing of concrete, it does occur in nature as soft, typically white masses. Occasional crystals may be found.
  • Portlandite Mineral Data

    webmineral.com/data/Portlandite.shtml General Portlandite Information : Chemical Formula: Ca(OH)2 : Composition: Molecular Weight = 74.09 gm Calcium 54.09 % Ca 75.69 % CaO: Hydrogen 2.72 % H 24.31 % H 2 O: Oxygen 43.19 % O: 100.00 % 100.00 % = TOTAL OXIDE
  • Portlandite: Mineral information, data and localities.

    www.mindat.org/min-3264.html Portlandite: Xu H, Zhao Y, Zhang J, Hickmott D D, Daemen L L (2007) In situ neutron diffraction study of deuterated portlandite Ca(OD)2 at high pressure and temperature Physics and Chemistry of Minerals 34 223-232: 2007: 3.4: 296: 0009077: Portlandite
  • Portlandite Mineral Data - Mineralogy Database

    webmin.mindat.org/data/Portlandite.shtml General Portlandite Information : Chemical Formula: Ca(OH)2 : Composition: Molecular Weight = 74.09 gm Calcium 54.09 % Ca 75.69 % CaO: Hydrogen 2.72 % H 24.31 % H 2 O: Oxygen 43.19 % O: 100.00 % 100.00 % = TOTAL OXIDE
  • Portlandite | definition of Portlandite by Medical dictionary

    medical-dictionary.thefreedictionary.com/Portlandite calcium (Ca) [kal´se-um] a chemical element, atomic number 20, atomic weight 40.08. (See Appendix 6.) Calcium is the most abundant mineral in the body. In combination with phosphorus it forms calcium phosphate, the dense, hard material of the bones and teeth. It is an important cation in intracellular and extracellular fluid and is essential to the ...
  • Portlandite Ca(OH)2 - Handbook of Mineralogy

    handbookofmineralogy.org/pdfs/portlandite.pdf Portlandite Ca(OH)2 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Hexagonal. Point Group: 32/m. Hexagonal plates, to 6 cm; commonly fibrous, powdery, massive.
  • AMCSD Search Results - Raman Spectroscopy

    rruff.geo.arizona.edu/AMS/minerals/Portlandite Portlandite: Xu H, Zhao Y, Zhang J, Hickmott D D, Daemen L L : Physics and Chemistry of Minerals 34 (2007) 223-232: In situ neutron diffraction study of deuterated portlandite Ca(OD)2 at high: pressure and temperature: Sample: P = 1.61 GPa _database_code_amcsd 0009072: 3.5462 3.5462 4.7428 90 90 120 P-3m1: atom x y z occ Uiso: Ca 0 0 0 .019
  • Portland cement - Wikipedia

    en.wikipedia.org/wiki/Portland_cement Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete, mortar, stucco, and non-specialty grout.It was developed from other types of hydraulic lime in England in the early 19th century by Joseph Aspdin, and usually originates from limestone.It is a fine powder, produced by heating limestone and clay minerals in a kiln to form clinker ...