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ASTM C856-13
Standard Practice for Petrographic Examination of Hardened Concrete
Automatische name übersetzung:
Standard Praxis für Petrographische Untersuchung von Festbeton
NORM herausgegeben am 1.11.2013
Informationen über die Norm:
Bezeichnung normen: ASTM C856-13
Anmerkung: UNGÜLTIG
Ausgabedatum normen: 1.11.2013
SKU: NS-15316
Zahl der Seiten: 17
Gewicht ca.: 51 g (0.11 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Die Annotation des Normtextes ASTM C856-13 :
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)
Ergänzende Informationen
| 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. 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 Annex A1 outlines an uranyl acetate method for identifying locations where alkali-silica gel may be present. It is a requirement that the substances in those locations must be identified using any other more definitive techniques, such as petrographic microscopy. 1.4 The purposes of and procedures for petrographic examination of hardened concrete are given in the following sections:
1.5 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. 1.6 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.
Standard Test Method for Potential Volume
Change of Cement-Aggregate Combinations (Withdrawn 2001) Adjunct C856 (ADJCO856) A chart of 27 photos Available from ASTM
International Headquarters. Order Adjunct No. . Original adjunct
produced in 1995. Standard Guide for Reflected–Light
Photomicrography Standard Guide for Preparation of
Metallographic Specimens Standard Test Method for Potential Alkali
Reactivity of Aggregates (Mortar-Bar Method) Standard Test Method for Length Change of
Hydraulic-Cement Mortars Exposed to a Sulfate Solution Standard Practice for Examination and
Sampling of Hardened Concrete in Constructions Standard Test Method for Rebound Number
of Hardened Concrete Standard Test Method for Penetration
Resistance of Hardened Concrete Standard Test Method for Ultrasonic Pulse
Velocity Through Concrete Standard Test Method for Splitting
Tensile Strength of Cylindrical Concrete Specimens Standard Test Method for Potential Alkali
Reactivity of Cement-Aggregate Combinations (Mortar-Bar Method)
(Withdrawn 2018) Standard Test Method for Fundamental
Transverse, Longitudinal, and Torsional Resonant Frequencies of
Concrete Specimens Standard Test Method for Microscopical
Determination of Parameters of the Air-Void System in Hardened
Concrete Standard Terminology Relating to Concrete
and Concrete Aggregates Standard Test Method for Potential
Expansion of Portland-Cement Mortars Exposed to Sulfate Standard Test Method for Effectiveness of
Pozzolans or Ground Blast-Furnace Slag in Preventing Excessive
Expansion of Concrete Due to the Alkali-Silica Reaction | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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