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ASTM C1622/C1622M-10(2016)e1
Standard Specification for Cold-Weather Admixture Systems (Includes all amendments and changes 12/27/2016).
Přeložit název
NORMA vydána dne 1.10.2016
Informace o normě:
Označení normy: ASTM C1622/C1622M-10(2016)e1
Datum vydání normy: 1.10.2016
Kód zboží: NS-667114
Počet stran: 8
Přibližná hmotnost: 24 g (0.05 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Anotace textu normy ASTM C1622/C1622M-10(2016)e1 :
This specification covers cold-weather admixture systems to be added to hydraulic-cement concrete when the temperature of the concrete immediately after placement will be low. This specification stipulates tests of the cold-weather admixture system with suitable materials specified or with materials proposed for specific work, and provides three levels of testing. The apparatus used shall be suitable for low temperature environment. The concrete, cementitious materials, aggregates, and air-entraining admixture shall be tested and shall conform to the values of chemical and performance requirements such as initial setting time, compressive strength, shrinkage, durability.
Keywords:
chemical admixture, cold-weather admixture, concrete, performance requirements,, ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar)
Doplňující informace
| 1. Scope | ||||||||||||||||||||||||||||||||||||||
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1.1 This specification covers cold-weather admixture systems to be added to hydraulic-cement concrete when the temperature of the concrete immediately after placement will be as low as -5.0 °C [23.0 °F] prior to the time of initial set. 1.2 This specification stipulates tests of the cold-weather admixture system with suitable materials as described in 11.1 – 11.3 or with materials proposed for specific work (See 11.5). Unless otherwise requested by the purchaser, tests shall be made using suitable concreting materials as described in 11.1 – 11.3. Note 1: Whenever practicable, tests should be made using the
concreting materials, the mixture proportions, and batching
sequence proposed for the specific work (See 11.5) because the time of setting,
compressive strength gain, and other properties may
vary.
1.3 This specification provides three levels of testing. 1.3.1 Level 1—During the initial approval stage, proof of compliance with the performance requirements defined in Table 1 demonstrates that the cold-weather admixture system meets the requirements of this specification. Uniformity and equivalence tests (See Section 6) shall be carried out to provide results against which later comparisons can be made. 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 Table 1
demonstrates conformity of the admixture system with the
requirements of this specification.
1.3.3 Level 3—For acceptance of a lot or for measuring uniformity within or between lots, when specified by the purchaser, uniformity and equivalence tests (See Section 6) shall be used. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the inch-pound units are shown in brackets. 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 to
the test methods portion, Sections 11 – 18, of this specification.
Standard Practice for Making and Curing
Concrete Test Specimens in the Laboratory Standard Test Method for Length Change of
Hardened Hydraulic-Cement Mortar and Concrete ACI 211.1 Practice for Selecting Proportions for
Normal, Heavyweight, and Mass Concrete Standard Specification for Reagent
Water Standard Practice for Use of Unbonded
Caps in Determination of Compressive Strength of Hardened
Cylindrical Concrete Specimens Standard Test Method for Temperature of
Freshly Mixed Hydraulic-Cement Concrete Standard Test Method for Resistance of
Concrete to Rapid Freezing and Thawing (Withdrawn 2024) Standard Specification for Chemical
Admixtures for Concrete (Includes all amendments and changes
8/11/2022). Standard Test Method for Time of Setting
of Concrete Mixtures by Penetration Resistance Standard Specification for Air-Entraining
Admixtures for Concrete (Includes all amendments and changes
12/27/2016). Standard Test Method for Air Content of
Freshly Mixed Concrete by the Pressure Method 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 Specification for Concrete
Aggregates Standard Practice for Sampling and the
Amount of Testing of Hydraulic Cement Standard Specification for Portland
Cement Standard Test Method for Slump of
Hydraulic-Cement Concrete 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 |
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