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Standard Test Method for Flexural Toughness of Fiber Reinforced Concrete (Using Centrally Loaded Round Panel) (Includes all amendments And changes 11/13/2019).
Automatische name übersetzung:
Standard Test Method for Biegezähigkeit von Faserbeton (Mit Zentral Loaded Runde Panel)
NORM herausgegeben am 1.12.2012
Bezeichnung normen: ASTM C1550-12a
Anmerkung: UNGÜLTIG
Ausgabedatum normen: 1.12.2012
SKU: NS-11803
Zahl der Seiten: 13
Gewicht ca.: 39 g (0.09 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
energy absorption, fiber-reinforced concrete, flexure, post-crack behavior, toughness, ICS Number Code 91.100.40 (Products in fibre-reinforced cement)
Significance and Use | ||||||
5.1 The post-crack behavior of plate-like, fiber-reinforced concrete structural members is well represented by a centrally loaded round panel test specimen that is simply supported on three pivots symmetrically arranged around its circumference. Such a test panel experiences bi-axial bending in response to a central point load and exhibits a mode of failure related to the in situ behavior of structures. The post-crack performance of round panels subject to a central point load can be represented by the energy absorbed by the panel up to a specified central deflection. In this test method, the energy absorbed up to a specified central deflection is taken to represent the ability of a fiber-reinforced concrete to redistribute stress following cracking. 5.2 The motivation for use of a
round panel with three supports is based on the within-batch
repeatability found in laboratory3 and field
experience.5.3 The nominal dimensions of the
panel are 75 mm in thickness and 800 mm in diameter. Thickness has
been shown to strongly influence panel performance in this test,
while variations in diameter have been shown to exert a minor
influence on performance.5 Correction
factors are provided to account for actual measured dimensions.
1.1 This test method covers the
determination of flexural toughness of fiber-reinforced concrete
expressed as energy absorption in the post-crack range using a
round panel supported on three symmetrically arranged pivots and
subjected to a central point load. The performance of specimens
tested by this method is quantified in terms of the energy absorbed
between the onset of loading and selected values of central
deflection.
1.2 This test method provides for the scaling of results whenever specimens do not comply with the target thickness and diameter, as long as dimensions do not fall outside of given limits. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 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. |
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2. Referenced Documents | ||||||
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Historisch
1.11.2009
Historisch
1.11.2011
Historisch
1.11.2009
Historisch
1.11.2012
Historisch
15.12.2012
Historisch
1.11.2012
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