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ASTM C494/C494M-13
Standard Specification for Chemical Admixtures for Concrete
Automaticky přeložený název:
Standard Specification pro chemické příměsi do betonu
NORMA vydána dne 1.4.2013
Informace o normě:
Označení normy: ASTM C494/C494M-13
Poznámka: NEPLATNÁ
Datum vydání normy: 1.4.2013
Kód zboží: NS-13665
Počet stran: 10
Přibližná hmotnost: 30 g (0.07 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Anotace textu normy ASTM C494/C494M-13 :
Keywords:
accelerating, chemical admixtures, concrete, physical requirements, retarding, specific performance, testing, water reducing, ICS Number Code 91.100.30 (Concrete and concrete products)
Doplňující informace
| 1. Scope | ||||||||||||||||||||||||||||||||||||||||||||
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1.1 This specification covers materials for use as chemical admixtures to be added to hydraulic-cement concrete mixtures in the field for the purpose or purposes indicated for the eight types as follows: 1.1.1 Type A—Water-reducing admixtures, 1.1.2 Type B—Retarding admixtures, 1.1.3 Type C—Accelerating admixtures, 1.1.4 Type D—Water-reducing and retarding admixtures, 1.1.5 Type E—Water-reducing and accelerating admixtures, 1.1.6 Type F—Water-reducing, high range admixtures, 1.1.7 Type G—Water-reducing, high range, and retarding admixtures, and 1.1.8 Type S—Specific performance admixtures. 1.2 This specification stipulates tests of an admixture with suitable concreting materials as described in 11.1-11.3 or with cement, pozzolan, aggregates, and an air-entraining admixture proposed for specific work (1.3 This specification provides for three levels of testing. 1.3.1 Level 1—During the initial approval stage, proof of compliance with the performance requirements defined in 1.3.2 Level 2—Limited retesting is described in 5.2, 5.2.1 and 5.2.2. Proof of compliance with the requirements of 1.3.3 Level 3—For acceptance of a lot or for measuring uniformity within or between lots, when specified by the purchaser, the uniformity and equivalence tests of Section 1.4 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. 1.5 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 1.6 The following
precautionary caveat pertains only to the test method sections,
Sections
Standard Specification for Portland
Cement Standard Test Method for Slump of
Hydraulic-Cement Concrete Standard Test Method for Density (Unit
Weight), Yield, and Air Content (Gravimetric) of Concrete Standard Test Method for Sieve Analysis
of Fine and Coarse Aggregates Standard Test Method for Flexural
Strength of Concrete (Using Simple Beam with Third-Point
Loading) Standard Specification for Concrete
Aggregates Standard Test Method for Compressive
Strength of Cylindrical Concrete Specimens Standard Practice for Sampling and the
Amount of Testing of Hydraulic Cement Standard Practice for Making and Curing
Concrete Test Specimens in the Laboratory Standard Test Method for Air Content of
Freshly Mixed Concrete by the Pressure Method Standard Test Method for Length Change of
Hardened Hydraulic-Cement Mortar and Concrete Standard Specification for Air-Entraining
Admixtures for Concrete ACI 211.1–91 Standard Practice for Selecting
Proportions for Normal, Heavyweight, and Mass Concrete Available
from American Concrete Institute (ACI), P.O. Box 9094, Farmington
Hills, MI 48333-9094, http://www.aci-int.org. Manual of Aggregate and Concrete Testing Standard Practice for General Techniques
for Obtaining Infrared Spectra for Qualitative Analysis Standard Specification for ASTM
Hydrometers Standard Specification for Reagent
Water Standard Test Methods for Specific
Gravity, Apparent, of Liquid Industrial Chemicals Standard Practice for Sampling
Aggregates Standard Specification for Chemical
Admixtures for Use in Producing Flowing Concrete Standard Test Method for Resistance of
Concrete to Rapid Freezing and Thawing (Withdrawn 2024) Standard Test Method for Time of Setting
of Concrete Mixtures by Penetration Resistance |
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