restarting cement hydration - определение. Что такое restarting cement hydration
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Что (кто) такое restarting cement hydration - определение

SCIENTIFIC METHOD USED TO AGE OR DATE OBSIDIAN OBJECTS
Obsidian hydration
Найдено результатов: 168
Hydration energy         
THE AMOUNT OF ENERGY RELEASED WHEN ONE MOLE OF IONS UNDERGO HYDRATION
Hydration enthalpy; Hydration free energy
In chemistry, hydration energy (also hydration enthalpy) is the amount of energy released when one mole of ions undergoes hydration. Hydration energy is one component in the quantitative analysis of solvation.
fibro         
  • Example of asbestos cement siding and lining on a post-war temporary house in Yardley, Birmingham. Nearly 40,000 of these structures were built between 1946 and 1949 to house families.
  • StateLibQld 2 152895 James Hardie and Wunderlich float ready for the Victory Day procession in Brisbane, 1946
BUILDING MATERIAL CONTAINING ASBESTOS
Fibrous Cement; Fibrous Asbestos Cement; Asbestos-cement; Fibrous cement; Fibro; Fibrolite (house cladding)
['f??br??]
¦ noun (plural fibros) Austral. a mixture of sand, cement, and cellulose fibre, used in sheets for building.
Fibre cement         
  • Older fibre cement roofing. [[Rammu]] island in Estonia
MATERIAL
Fiber cement; Fibro cement
Fibre cement is a composite building and construction material, used mainly in roofing and facade products because of its strength and durability. One common use is in fiber cement siding on buildings.
Sampyo Cement         
KOREAN CONCRETE COMPANY
Dongyang Cement
Sampyo Cement () is a South Korean cement, concrete and chemical company headquartered in Seoul. It produces portland cement products.
Rubber cement         
  • A bottle of rubber cement, showing a brush built into its cap and a photo about to be cemented to [[graph paper]].
TYPE OF ADHESIVE
Rubber Cement
Rubber cement (cow gum in British English) is an adhesive made from elastic polymers (typically latex) mixed in a solvent such as acetone, hexane, heptane or toluene to keep it fluid enough to be used. This makes it part of the class of drying adhesives: as the solvents quickly evaporate, the rubber solidifies, forming a strong yet flexible bond.
Water–cement ratio         
MAIN PARAMETER DETERMINING CONCRETE STRENGTH AND DURABILITY
Water/cement ratio; Water-cement ratio; Cement-water ratio; Cement-water factor; Cement-water mass ratio; Water-to-cement ratio; Water to cement ratio; Water-cement factor; Water–cement factor
The water–cement ratio (w/c ratio, or water-to-cement ratio, sometimes also called the water-cement factor, ) is the ratio of the mass of water () to the mass of cement () used in a concrete mix:
White Portland cement         
WHITE PORTLAND CEMENT
White Ordinary Portland Cement; Ordinary white Portland cement
White Portland cement or white ordinary Portland cement (WOPC) is similar to ordinary, gray Portland cement in all aspects except for its high degree of whiteness. Obtaining this color requires substantial modification to the method of manufacture, and because of this, it is somewhat more expensive than the gray product.
Hydration         
WIKIMEDIA DISAMBIGUATION PAGE
Hydrating; Hydration (disambiguation)
·noun The act of becoming, or state of being, a hydrate.
Hydrating         
WIKIMEDIA DISAMBIGUATION PAGE
Hydrating; Hydration (disambiguation)
·p.pr. & ·vb.n. of Hydrate.
cement         
  • [[Calcium oxide]] obtained by [[thermal decomposition]] of [[calcium carbonate]] at high temperature (above 825 °C).
  • Global Cement Capacity in 2010.
  • Global Cement Production in 2010
  • Global carbon emission by type to 2018
  • The National Cement Share Company of [[Ethiopia]]'s new plant in [[Dire Dawa]].
  • Clinker]] nodules produced by sintering at 1450 °C.
  • page=[https://archive.org/details/isbn_9781616144814/page/190 190]}}</ref>
  • Cement block construction examples from the Multiplex Manufacturing Company of Toledo, Ohio, in 1905
HYDRAULIC BINDER USED IN THE COMPOSITION OF MORTAR AND CONCRETE
Wet cement; Hydraulic cement; Cementitious; Cement plant; Cement factory; Cements; Cement Mix; Cement works; Green cement; Environmental impacts of cement; Cement industry; Interfacial transition zone; Interfacial Transition Zone; History of cement
(cements, cementing, cemented)
1.
Cement is a grey powder which is mixed with sand and water in order to make concrete.
...a mixture of wet sand and cement.
N-UNCOUNT
2.
Cement is the same as concrete
.
...the hard cold cement floor.
N-UNCOUNT
3.
Glue that is made for sticking particular substances together is sometimes called cement.
Stick the pieces on with tile cement.
N-UNCOUNT: usu n N
4.
Something that cements a relationship or agreement makes it stronger.
Nothing cements a friendship between countries so much as trade.
VERB: V n
5.
If things are cemented together, they are stuck or fastened together.
Most artificial joints are cemented into place.
VERB: usu passive, be V-ed prep/adv

Википедия

Obsidian hydration dating

Obsidian hydration dating (OHD) is a geochemical method of determining age in either absolute or relative terms of an artifact made of obsidian.

Obsidian is a volcanic glass that was used by prehistoric people as a raw material in the manufacture of stone tools such as projectile points, knives, or other cutting tools through knapping, or breaking off pieces in a controlled manner, such as pressure flaking.

Obsidian obeys the property of mineral hydration and absorbs water, when exposed to air at a well-defined rate. When an unworked nodule of obsidian is initially fractured, there is typically less than 1% water present. Over time, water slowly diffuses into the artifact forming a narrow "band," "rim," or "rind" that can be seen and measured with many different techniques such as a high-power microscope with 40–80 power magnification, depth profiling with SIMS (secondary ion mass spectrometry), and IR-PAS (infra red photoacoustic spectroscopy). In order to use obsidian hydration for absolute dating, the conditions that the sample has been exposed to and its origin must be understood or compared to samples of a known age (e.g. as a result of radiocarbon dating of associated materials).