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ASTM C494/C494M-10a
Standard Specification for Chemical Admixtures for Concrete (Includes all amendments And changes 8/10/2011).
Automaticky preložený názov:
Štandardné špecifikácie pre chemické prímesi do betónu
NORMA vydaná dňa 1.10.2010
Informácie o norme:
Označenie normy: ASTM C494/C494M-10a
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.10.2010
Kód tovaru: NS-13662
Počet strán: 10
Približná hmotnosť: 30 g (0.07 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Anotácia textu normy ASTM C494/C494M-10a :
Keywords:
accelerating, chemical admixtures, concrete, physical requirements, retarding, specific performance, testing, water reducing, Accelerating admixtures (for concrete), Concrete admixtures--specifications, Moisture analysis--concrete, Water-reducing admixtures (for concrete), ICS Number Code 91.100.30 (Concrete and concrete products)
Doplňujúce informácie
| 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 (11.4). Unless specified otherwise by the purchaser, the tests shall be made using concreting materials as described in 11.1-11.3. Note 1—It is recommended that, whenever practicable, tests be made using the cement, pozzolan, aggregates, air-entraining admixture, and the mixture proportions, batching sequence, and other physical conditions proposed for the specific work (11.4) because the specific effects produced by chemical admixtures may vary with the properties and proportions of the other ingredients of the concrete. For instance, Types F and G admixtures may exhibit much higher water reduction in concrete mixtures having higher cement factors than that listed in 12.1.1. |
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| 2. Referenced Documents | ||||||||||||||||||||||||||||||||||||||||||||
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