ASTM C1798/C1798M-16e1

Standard Specification for Returned Fresh Concrete for Use in a New Batch of Ready-Mixed Concrete

SCOPE
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)

General Information

• Status: Historical
• Publication Date: 14-Mar-2016
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.40 - Ready-Mixed Concrete

Relations

• Replaces: ASTM C1798-16 - Standard Specification for Returned Fresh Concrete for Use in a New Batch of Ready-Mixed Concrete
• Effective Date: 15-Mar-2016
• Replaced By: ASTM C1798/C1798M-19 - Standard Specification for Returned Fresh Concrete for Use in a New Batch of Ready-Mixed Concrete
• Effective Date: 01-Jan-2019
• Referred By: ASTM C94/C94M-23 - Standard Specification for Ready-Mixed Concrete
• Effective Date: 15-Mar-2016

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
´1
Designation: C1798/C1798M −16
Standard Specification for
Returned Fresh Concrete for Use in a New Batch of Ready-
1
Mixed Concrete
This standard is issued under the fixed designation C1798/C1798M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1
ε NOTE—The designation was editorially corrected to match the units of measurement statement in October 2016.
1. Scope hydraulic cementitious mixtures are caustic and may cause
2
chemical burns to skin and tissue upon prolonged use. )
1.1 This specification covers returned fresh concrete for use
in a new batch of ready-mixed concrete. Requirements for
2. Referenced Documents
returned fresh concrete shall be either as hereinafter specified
3
2.1 ASTM Standards:
or as specified by the purchaser. In any case where the
C94/C94M Specification for Ready-Mixed Concrete
requirements of the purchaser differ from those in this
C125 Terminology Relating to Concrete and Concrete Ag-
specification, the purchaser’s requirements shall govern. This
gregates
specification does not cover the placement, consolidation,
C494/C494M Specification for Chemical Admixtures for
curing, or protection of the concrete after delivery to the
Concrete
purchaser.
C1064/C1064M Test Method for Temperature of Freshly
1.2 This specification by itself shall not grant permission to
Mixed Hydraulic-Cement Concrete
the manufacturer to use returned fresh concrete in a new batch
of concrete. 3. Terminology
NOTE 1—The permission to use returned fresh concrete may be
3.1 Definitions—The terms used in this specification are
addressed in purchase documents, which may reference this specification.
defined in Terminology C125.
1.3 Returned fresh concrete in a quantity of less than 450 kg
3.2 Definitions of Terms Specific to This Standard:
3 3
[1000 lb] or 0.2 m [0.25 yd ] shall not be subject to this
3.2.1 admixture, hydration stabilizing, n—set-retarding
specification.
admixture, conforming to Specification C494/C494M Type B
or D, that can predictably reduce the hydration rate of cement
1.4 The values stated in either SI units or inch-pound units
for applications requiring the management of time of setting of
are to be regarded separately as standard. The values stated in
returned concrete, reducing the hydration rate of cement fines
each system may not be exact equivalents; therefore, each
inwaterfromconcreteproduction,orforapplicationsrequiring
system shall be used independently of the other. Combining
extended delivery time of ready-mixed concrete.
values from the two systems may result in nonconformance
with the standard.
3.2.2 concrete, returned fresh, n—fresh concrete not yet
discharged from a ready-mixed concrete transportation unit
1.5 The text of this standard references notes and footnotes,
when it is returned to the manufacturer.
which provide explanatory information. These notes and foot-
notes shall not be considered as requirements of the standard.
4. Ordering Information
1.6 This standard does not purport to address all of the
4.1 The new batch of concrete containing returned fresh
safety concerns, if any, associated with its use. It is the
concrete shall meet all requirements of the purchaser.
responsibility of the user of this standard to establish appro-
NOTE 2—The requirements of this specification are in addition to those
priate safety and health practices and determine the applica-
of the purchaser and the specification of the new batch of concrete
bility of regulatory limitations prior to use. (Warning—Fresh containing returned fresh concrete.
2
See Section on Safety Precautions, Manual ofAggregate and Concrete Testing,
1
This specification is under the jurisdiction of ASTM Committee C09 on Annual Book of ASTM Standards, Vol 04.02.
3
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee For referenced ASTM standards, visit the ASTM website, www.astm.org, or
C09.40 on Ready-Mixed Concrete. contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Current edition approved March 15, 2016. Published April 2016. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
C1798_C1798M–16E01. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C1798/C1798M − 16
NOTE 3—If using Specification C94/C94M for concrete potentially pends on factors including mixture proportions, concrete temperature,
incorporating returned fresh concrete, it is recommended the purchaser time of setting, and duratio
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: C1798 − 16 C1798/C1798M − 16
Standard Specification for
Returned Fresh Concrete for Use in a New Batch of Ready-
1
Mixed Concrete
This standard is issued under the fixed designation C1798;C1798/C1798M; the number immediately following the designation indicates
the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1
ε NOTE—The designation was editorially corrected to match the units of measurement statement in October 2016.
1. Scope
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.
3 3
1.3 Returned fresh concrete in a quantity of less than 450 kg [1000 lb] or 0.2 m [0.25 yd ] 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
2
tissue upon prolonged use. )
2. Referenced Documents
3
2.1 ASTM Standards:
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
3. Terminology
3.1 Definitions—The terms used in this specification are defined in Terminology C125.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 admixture, hydration stabilizing, n—set-retarding admixture, conforming to Specification C494/C494M Type B or D, that
can predictably reduce the hydration rate of cement for applications requiring the management of time of setting of returned
concrete, reducing the hydration rate of cement fines in water from concrete production, or for applications requiring extended
delivery time of ready-mixed concrete.
1
This specification is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C09.40 on
Ready-Mixed Concrete.
Current edition approved March 15, 2016. Published April 2016. DOI: 10.1520/C1798–16.10.1520/C1798_C1798M–16E01.
2
See Section on Safety Precautions, Manual of Aggregate and Concrete Testing, Annual Book of ASTM Standards, Vol 04.02.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
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C1798/C1798M − 16
3.2.2 concrete, returned fresh, n—fresh concrete not yet discharged from a ready-mixed concrete transportation unit when it is
returned to the manufacturer.
4. Ordering Information
4.1 The new batch of concrete containing returned fresh concrete shall meet all requirements of the purchaser.
NOTE 2—The requirements of this specification are in addition to those of the purchaser and
...