Vaizdas:Fly Ash FHWA dot gov.jpg

Fly_Ash_FHWA_dot_gov.jpg(347 × 274 taškų, rinkmenos dydis: 22 KiB, MIME tipas: image/jpeg)

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Aprašymas
English: Photomicrograph made with a Scanning Electron Microscope (SEM): Fly ash particles at 2,000x magnification.
  • Fly ash is typically finer than portland cement and lime. Fly ash consists of silt-sized particles which are generally spherical, typically ranging in size between 10 and 100 micron (see Figure).
  • These small glass spheres improve the fluidity and workability of fresh concrete.
  • Fineness is one of the important properties contributing to the pozzolanic reactivity of fly ash.
Français : Les cendres volantes sont généralement plus fines que le ciment portland ou la chaux. Une grande partie des particules qui composent ces cendres sont de la taille de celle d'un limon argileux, mais généralement sphérique, mesurant de 10 à 100 microns, incluant de petites sphères qui améliorent la fluidité et la maniabilité du béton frais auquel on a ajouté ces cendres. La petite taille de ces particules expliquent certaines de leurs propriétés qui contribuent à la réactivité pouzzolanique des cendres volantes
Data
Šaltinis http://www.fhwa.dot.gov/PAVEMENT/recycling/fach01.cfm
Autorius United States Department of Transportation - Federal Highway Administration
Leidimas
(Šios rinkmenos panaudojimas kitur)
US government: United States Department of Transportation - Federal Highway Administration

Licencija

Public domain
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.

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PAWAN KUMAR SAINI बानसूर,अलवर,राजस्थान,301402

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14 liepos 2006

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dabartinis02:35, 24 kovo 2009Versijos 02:35, 24 kovo 2009 miniatiūra347 × 274 (22 KiB)Shinkolobwe{{Information |Description={{en|1=Photomicrograph made with a Scanning Electron Microscope (SEM): Fly ash particles at 2,000x magnification. Fly ash is typically finer than portland cement and lime. Fly ash consists of silt-sized particles which are gener

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