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Standard Practice for Making and Curing Test Specimens for Evaluating Resistance of Coarse Aggregate to Freezing and Thawing in Air-Entrained Concrete
Přeložit název
NORMA vydána dne 1.6.2016
Označení normy: ASTM C1646/C1646M-16
Datum vydání normy: 1.6.2016
Kód zboží: NS-640466
Počet stran: 3
Přibližná hmotnost: 9 g (0.02 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
aggregate, coarse aggregate, freezing and thawing,, ICS Number Code 91.100.30 (Concrete and concrete products)
Significance and Use | ||||||||||||||||||||||||||
4.1 This practice provides standard requirements for proportioning concrete, and for preparing and conditioning test specimens suitable for evaluating the durability of coarse aggregate in air-entrained concrete subjected to freezing and thawing in accordance with Test Method C666/C666M. 4.2 Concrete having an adequate air-void system may not be resistant to freezing and thawing if it contains coarse aggregate that becomes critically saturated. An aggregate particle is considered to be critically saturated when there is insufficient unfilled pore space to accommodate the expansion of water that accompanies the freezing. |
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1. Scope | ||||||||||||||||||||||||||
1.1 This practice covers procedures for making and curing test specimens for evaluating resistance of normal-weight coarse aggregates to freezing and thawing in air-entrained concrete in accordance with Test Method C666/C666M, Procedure A or B. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.3 This practice does not purport to address all
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 Resistance of
Concrete to Rapid Freezing and Thawing (Withdrawn 2024) Standard Specification for Portland
Cement Standard Terminology Relating to Concrete
and Concrete Aggregates (Includes all amendments and changes
10/14/2021). Standard Test Method for Compressive
Strength of Cylindrical Concrete Specimens Standard Specification for Concrete
Aggregates 211.1 Standard Practice for Sampling
Aggregates Standard Specification for Chemical
Admixtures for Concrete (Includes all amendments and changes
8/11/2022). Standard Practice for Use of Apparatus
for the Determination of Length Change of Hardened Cement Paste,
Mortar, and Concrete Standard Test Method for Air Content of
Freshly Mixed Concrete by the Pressure Method Standard Practice for Making and Curing
Concrete Test Specimens in the Laboratory Standard Test Method for Slump of
Hydraulic-Cement Concrete Standard Test Method for Air Content of
Freshly Mixed Concrete by the Volumetric Method |
Poslední aktualizace: 27.09.2024 (Počet položek: 2 350 600)
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