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Description of ASTM-C1017/C1017M 2013ASTM C1017/C1017M-13Historical Standard: Standard Specification for Chemical Admixtures for Use in Producing Flowing ConcreteASTM C1017/C1017MScope 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 RequirementsA
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.
1.4.2 Level 2—Limited retesting described in the section relating to general requirements may be requested at intervals by the purchaser. Proof of compliance with the requirements of Table 1 demonstrates continued conformity of the admixture with the requirements of the specification. 1.4.3 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 the section on Lot Uniformity and Equivalence shall be used. 1.5 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. Some values have only SI units because the inch-pound equivalents are not used in practice.
Note 1—Sieve size is identified by its standard designation in Specification E11. The alternative designation given
in parentheses is for information only and does not represent a different standard sieve size.
Note 2—It is recommended that, whenever practicable, tests be made using the concrete-making materials (cement,
pozzolan, slag, aggregates, air-entraining admixture), the mixture proportions, and the batching sequence and other physical conditions proposed for the specific work. The specific effects
produced by chemical admixtures may vary with the properties and proportions of the other ingredients of the concrete.
Note 3—Temperature has a pronounced effect on time of setting of concrete. This may be exaggerated by the use of
admixture Types I and II. If concrete temperatures to be expected on a particular job differ significantly from the conditions set forth in this specification, further testing may be
desirable.
Note 4—An unusually rapid loss of workability with time, sometimes termed “slump loss”, can be experienced with
these admixtures. The rate of slump loss will vary with the particular concreting materials and proportions, mixing equipment and procedures, and temperatures experienced on any particular job.
At elevated temperatures, the slump may be retained for a longer period if a Type II admixture is used.
Note 5—Admixtures that contain relatively large amounts of chloride may accelerate corrosion of prestressing steel.
Compliance with the requirements of this specification does not constitute assurance of acceptability of the admixture for use in prestressed concrete (see ACI 318).
Note 6—Admixtures that contain relatively large amounts of alkali
(Na 2O + 0.658 K2O) may contribute to reaction with some aggregates. Compliance with the requirements of this specification does not assure acceptability when used with alkali-reactive aggregates and some cements. 1.6 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. 1.7 The following precautionary caveat pertains only to the test method sections of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.2 Keywords admixture; concrete; flowing concrete; plasticizing admixtures; plasticizing and retarding admixtures ICS Code ICS Number Code 91.100.30 (Concrete and concrete products) DOI: 10.1520/C1017_C1017M-13 The following editions for this book are also available...This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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