ASTM-C494 2010

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C494/C494M-10a Standard Specification for Chemical Admixtures for Concrete

Published By	Publication Date	Number of Pages
ASTM	2010	10

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Categories: 91.100.30 - Concrete and concrete products, ASTM

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Description

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 1It 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.

PDF Catalog

PDF Pages	PDF Title
1	Scope
2	Referenced Documents Terminology Ordering Information General Requirements
3	Uniformity and Equivalence Packaging and Marking Storage Sampling and Inspection
4	Rejection TABLE 1
5	Materials
6	Proportioning of Concrete Mixtures Mixing Tests and Properties of Freshly Mixed Concrete
7	Preparation of Test Specimens Test Specimens of Hardened Concrete Tests on Hardened Concrete TABLE 2
8	Uniformity and Equivalence Tests
9	Report
10	Keywords

Additional information

Standard Title	C494/C494M-10a Standard Specification for Chemical Admixtures for Concrete
Published Code	ASTM
Publication Date	2010
Pages Count	10
ICS Codes	91.100.30 - Concrete and concrete products

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