ASTM C1017/C1017M-13

Standard Specification for Chemical Admixtures for Use in Producing Flowing Concrete

ASTM International, 12/15/2013

Publisher: ASTM

File Format: PDF

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Description

Published:15/12/2013

Pages:9

File Size:1 file , 130 KB

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1.1 This specification covers two types of chemical admixtures to be added to hydraulic cement concrete mixtures for the purpose of producing flowing concrete. The types are as follows:

1.1.1 Type I-Plasticizing, and

1.1.2 Type II-Plasticizing and retarding.

1.2 This specification stipulates tests of a chemical admixture with reference concreting materials or with concrete-making materials proposed for specific work. Unless otherwise specified by the purchaser, the tests shall be made using reference concreting materials.

1.3 If a chemical admixture has been tested and found to comply with the provisions of this specification using reference materials, and is being considered for use with other materials for specific work, additional tests for such use are allowed if agreed upon between the purchaser and the supplier and are allowed to consist of a portion of the tests described herein.

1.4 This specification provides for three levels of testing.

1.4.1 Level 1-During the initial approval stage, proof of compliance with the performance requirements defined in Table 1 demonstrates that the admixture meets the requirements of this specification. Uniformity and equivalence tests of the section on Lot Uniformity and Equivalence shall be carried out to provide results against which later comparisons can be made.

TABLE 1 Physical Requirements^A

	Type I Plasticizing	Type II Plasticizing and Retarding
Time of setting, allowable deviation from
Reference, h
Initial: at least	...	1 later
	1 earlier nor 1¹/₂ later	3¹/₂ later
Final: at least	...	...
	1 earlier nor 1¹/₂ later	3¹/₂ later
Increase in slump, min.	90 mm [3.5 in.]	90 mm [3.5 in.]
Compressive strength, min., % of reference
3 days	90	90
7 days	90	90
28 days	90	90
6 months	90	90
1 year	90	90
Flexural strength, min., % of reference
3 days	90	90
7 days	90	90
28 days	90	90
Length change after 14 days drying, max. shrinkage (alternative requirements):^B
% of reference	135	135
Increase over reference, in.	0.010	0.010
Relative durability factor, min.^C	80	80

^A The values in the table include allowance for normal variation in the test results. The object of the 90 % strength requirements is to require a level of performance comparable to that of the reference concrete.

^B Alternative Requirements-Percent of reference limit applies when length change of reference is 0.030 % or greater; increase over reference limit applies when length change of reference is less than 0.030 %.

^C The requirement is applicable only when the admixture is to be used in air-entrained concrete which may be exposed to freezing and thawing while wet.

ASTM C1017/C1017M-13

Standard Specification for Chemical Admixtures for Use in Producing Flowing Concrete

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