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1.1 This specification covers returned fresh concrete for use in a new batch of ready-mixed concrete. Requirements for returned fresh concrete shall be either as hereinafter speciﬁed or as speciﬁed by the purchaser. In any case where the requirements of the purchaser differ from those in this speciﬁcation, the purchaser’s requirements shall govern. This speciﬁcation does not cover the placement, consolidation, curing, or protection of the concrete after delivery to the purchaser.
1.2 This specification by itself shall not grant permission to the manufacturer to use returned fresh concrete in a new batch of concrete.
Note 1: The permission to use returned fresh concrete may be addressed in purchase documents, which may reference this specification.
1.3 Returned fresh concrete in a quantity of less than 450 kg [1000 lb] or 0.2 m3 [0.25 yd3] shall not be subject to this specification.
1.4 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 nonconformance with the standard.
1.5 The text of this standard references notes and footnotes, which provide explanatory information. These notes and footnotes shall not be considered as requirements of the standard.
1.6 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 use.)
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C94/C94M Specification for Ready-Mixed Concrete
C125 Terminology Relating to Concrete and Concrete Aggregates
C494/C494M Specification for Chemical Admixtures for Concrete
C1064/C1064M Test Method for Temperature of Freshly Mixed Hydraulic-Cement Concrete
ICS Number Code 91.100.30 (Concrete and concrete products)
UNSPSC Code 30111505(Ready mix concrete)
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ASTM C1798 / C1798M-16e1, Standard Specification for Returned Fresh Concrete for Use in a New Batch of Ready-Mixed Concrete, ASTM International, West Conshohocken, PA, 2016, www.astm.orgBack to Top