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Standard Test Method for Quantitative Determination of Phases in Portland Cement Clinker by Microscopical Point-Count Procedure
NORMA vydaná dňa 1.2.2020
Označenie normy: ASTM C1356-07(2020)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.2.2020
Kód tovaru: NS-983385
Počet strán: 6
Približná hmotnosť: 18 g (0.04 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
alite, aluminate, belite, ferrite, periclase, portland cement clinker, reflected light microscopy ,, ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar)
Significance and Use | ||||||||||
5.1 This test method provides a relatively simple and reliable microscopical means of measuring the phase abundance of portland cement clinker (Note 1). Microscopical point counting provides a direct measure of the clinker phase composition in contrast to the calculated Bogue phase composition (Note 2). Note 1: This test method utilizes a reflected light
microscope. Related methods such as transmitted light microscopy,
scanning electron microscopy, and automated imaging techniques may
also be used for clinker analysis but are not presently included in
this test method.
Note 2: This test method allows direct determination of the
proportion of each individual phase in portland cement clinker.
This test method is intended to provide an alternative to the
indirect estimation of phase proportion using the equations in
Specification C150/C150M
(footnote C in Table 1 and footnote B in Table 2).
5.2 This test method assumes the operator is qualified to operate a reflected light microscope and the required accessories, is able to correctly prepare polished sections and use necessary etchants, and is able to correctly identify the constituent phases. 5.3 This test method may be used as part of a quality control program in cement manufacturing as well as a troubleshooting tool. Microscopic characterization of clinker phases may also aid in correlating cement properties and cement performance in concrete, to the extent that properties and performance are a function of phase composition. |
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1. Scope | ||||||||||
1.1 This test method covers a systematic procedure for measuring the percentage volume of the phases in portland cement clinker by microscopy. 1.2 The values stated in SI units are to be regarded as the standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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2. Referenced Documents | ||||||||||
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