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ASTM C856-17
Standard Practice for Petrographic Examination of Hardened Concrete
Přeložit název
NORMA vydána dne 1.1.2017
Informace o normě:
Označení normy: ASTM C856-17
Poznámka: NEPLATNÁ
Datum vydání normy: 1.1.2017
Kód zboží: NS-677056
Počet stran: 14
Přibližná hmotnost: 42 g (0.09 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Anotace textu normy ASTM C856-17 :
Keywords:
aggregates, air voids, alkali-silica reaction, analysis, deterioration, examination, fire effects, hardened concrete, microscopy, paste, petrographic, secondary deposits,, ICS Number Code 91.100.30 (Concrete and concrete products)
Doplňující informace
| 1. Scope | ||||||||||||||||||||||||||||||||||
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1.1 This practice outlines procedures for the petrographic examination of samples of hardened concrete. The samples examined may be taken from concrete constructions, they may be concrete products or portions thereof, or they may be concrete or mortar specimens that have been exposed in natural environments, or to simulated service conditions, or subjected to laboratory tests. The phrase “concrete constructions” is intended to include all sorts of objects, units, or structures that have been built of hydraulic cement concrete. Note 1: A photographic chart of materials, phenomena, and
reaction products discussed in Sections 8 – 13 and Tables 1-6 are available as Adjunct C856
(ADJCO856).
1.2 The petrographic procedures outlined
herein are applicable to the examination of samples of all types of
hardened hydraulic-cement mixtures, including concrete, mortar,
grout, plaster, stucco, terrazzo, and the like. In this practice,
the material for examination is designated as “concrete,” even
though the commentary may be applicable to the other mixtures,
unless the reference is specifically to media other than
concrete.
1.3 The purposes of and procedures for petrographic examination of hardened concrete are given in the following sections:
1.4 The values stated in inch-pound units are to be regarded as the standard. The SI units in parentheses are provided for information purposes only. 1.5 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 and health practices and determine the applicability of regulatory limitations prior to use. A specific hazard statement is given in 6.2.10.1. |
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| 2. Referenced Documents | ||||||||||||||||||||||||||||||||||
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