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ASTM C1884-18

(Specification)

Standard Specification for Concrete Ballast Block

Standard Specification for Concrete Ballast Block

SCOPE
1.1 This specification covers dry-cast concrete ballast blocks that are primarily used for ballast of rooftop equipment. These units are machine-made from hydraulic cement, water, and suitable mineral aggregates with or without the inclusion of other materials.
Note 1: The design of concrete ballast block systems for resisting wind uplift is beyond the scope of this specification. Building codes and other standards should be consulted in designing for wind uplift resistance.  
1.2 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Historical
Publication Date
30-Nov-2018
ICS
91.100.30 - Concrete and concrete products
Technical Committee
C15 - Manufactured Masonry Units
Drafting Committee
C15.03 - Concrete Masonry Units and Related Units
Current Stage
Ref Project

Relations

Referred By
ASTM C140/C140M-23 - Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
Effective Date
01-Dec-2018

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ASTM C1884-18 - Standard Specification for Concrete Ballast Block
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation:C1884 −18
Standard Specification for
1
Concrete Ballast Block
This standard is issued under the fixed designation C1884; 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. Scope Concrete Masonry Units
C595/C595M Specification for Blended Hydraulic Cements
1.1 This specification covers dry-cast concrete ballast
C618 Specification for Coal Fly Ash and Raw or Calcined
blocks that are primarily used for ballast of rooftop equipment.
Natural Pozzolan for Use in Concrete
These units are machine-made from hydraulic cement, water,
C979/C979M Specification for Pigments for Integrally Col-
and suitable mineral aggregates with or without the inclusion
ored Concrete
of other materials.
C989/C989M Specification for Slag Cement for Use in
NOTE 1—The design of concrete ballast block systems for resisting
Concrete and Mortars
wind uplift is beyond the scope of this specification. Building codes and
C1157/C1157M Performance Specification for Hydraulic
other standards should be consulted in designing for wind uplift resis-
Cement
tance.
C1232 Terminology for Masonry
1.2 The text of this standard references notes and footnotes
C1240 Specification for Silica Fume Used in Cementitious
that provide explanatory material. These notes and footnotes
Mixtures
(excluding those in tables and figures) shall not be considered
C1262/C1262M Test Method for Evaluating the Freeze-
as requirements of the standard.
Thaw Durability of Dry-Cast Segmental Retaining Wall
1.3 The values stated in inch-pound units are to be regarded
Units and Related Concrete Units
as standard. The values given in parentheses are mathematical
3. Terminology
conversions to SI units that are provided for information only
and are not considered standard.
3.1 Terminology defined in Terminology C1232 shall apply
to this specification.
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3.2 Definitions of Terms Specific to This Standard:
responsibility of the user of this standard to establish appro-
3.2.1 concrete ballast block, n—a manufactured concrete
priate safety, health, and environmental practices and deter-
unit used primarily to provide weight for stabilizing rooftop
mine the applicability of regulatory limitations prior to use.
equipment.
1.5 This international standard was developed in accor-
3.2.1.1 Discussion—An example application for concrete
dance with internationally recognized principles on standard-
ballast block is ballast for photovoltaic arrays.
ization established in the Decision on Principles for the
4. Material
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
4.1 Cementitious Materials—Materials shall conform to the
Barriers to Trade (TBT) Committee.
following applicable specifications:
4.1.1 Portland Cement—Specification C150/C150M.
2. Referenced Documents
4.1.2 Modified Portland Cement—Portland cement con-
2.1 ASTM Standards: forming to Specification C150/C150M, modified as follows:
C33/C33M Specification for Concrete Aggregates 4.1.2.1 Limestone—Limestone, with a minimum 85 % cal-
C140/C140M Test Methods for Sampling and Testing Con- cium carbonate (CaCO ) content, shall be permitted to be
3
added to the cement, provided the requirements of Specifica-
crete Masonry Units and Related Units
C150/C150M Specification for Portland Cement tion C150/C150M are modified as follows:
C331/C331M Specification for Lightweight Aggregates for (1) Limitation on Insoluble Residue—1.5 %.
(2) Limitation on Air Content of Mortar—Volume percent,
22 % max.
1
This specification is under the jurisdiction of ASTM Committee C15 on
(3) Limitation on Loss on Ignition—7 %.
Manufactured Masonry Units and is the direct responsibility of Subcommittee
4.1.3 Blended Cements—Specification C595/C595M.
C15.03 on Concrete Masonry Units and Related Units.
4.1.4 Hydraulic Cement—Specification C1157/C1157M.
Current edition approved Dec. 1, 2018. Published December 2018. DOI:
10.1520/C1884-18 4.1.5 Pozzolans—Specification C618.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C1884−18
4.1.6 Blast Furnace Slag Cement—Specification C989/ customary methods of handling in shipment and delivery are
C989M. not grounds for rejection.
4.1.7 Silica Fume—Specification C1240.
5.4 A shipment shall not contain more than 5 % of units,
4.2 Aggregates—Aggregates shall conform to the following including broken units, that do not meet the requirements of
...

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4.1 Alkali-silica reaction is a chemical interaction between some siliceous constituents of concrete aggregates and hydroxyl ions (1).5 The concentration of hydroxyl ion within the concrete is predominantly controlled by the concentration of sodium and potassium (2).  
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4.1 This practice provides for using an unbonded capping system in testing hardened concrete cylinders made in accordance with Practices C31/C31M or C192/C192M, or cores obtained in accordance with Test Method C42/C42M in lieu of the capping systems described in Practice C617/C617M.  
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1.1 This practice covers requirements for a capping system using unbonded caps for testing concrete cylinders molded in accordance with Practice C31/C31M or C192/C192M, or cores obtained in accordance with Test Method C42/C42M. Unbonded neoprene caps of a defined hardness are permitted to be used for testing for a specified maximum number of reuses without qualification testing up to a certain concrete compressive strength level. Above that strength, level neoprene caps will require qualification testing. Qualification testing is required for all elastomeric materials other than neoprene regardless of the concrete strength.  
1.2 Unbonded caps are not to be used for acceptance testing of concrete with compressive strength below 10 MPa [1500 psi ] or above 80 MPa [12 000 psi].  
1.3 The text of this standard refers to notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.4 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. Combining values from the two systems may result in non-conformance with the standard.  
1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. (Warning—Concrete specimens tested with unbonded caps rupture more violently than comparable specimens tested with bonded caps. The safety precautions given in the Manual of Aggregate and Concrete Testing are recommended.2)  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM C873/C873M-23(Test Method)
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ABSTRACT
This test method covers the determination of strength of cylindrical concrete specimens that have been molded in place using special molds attached to formwork. A concrete cylinder mold assembly consisting of a mold and a tubular support member is fastened within the concrete formwork prior to placement of the concrete. The elevation of the mold upper edge is adjusted to correspond to the plane of the finished slab surface. The mold support prevents direct contact of the slab concrete with the outside of the mold and permits its easy removal from the hardened concrete. Strength of cast-in-place cylinders may be used for various purposes, such as estimating the load-bearing capacity of slabs, determining the time of form and shore removal, and determining the effectiveness of curing and protection. Consolidation of concrete in the mold may be varied to simulate the conditions of placement. Internal vibration of concrete in the mold is prohibited except under special circumstances.
SIGNIFICANCE AND USE
4.1 Cast-in-place cylinder strength relates to the strength of concrete in the structure due to the similarity of curing conditions because the cylinder is cured within the slab. However, due to differences in moisture condition, degree of consolidation, specimen size, and length-diameter ratio, there is not a unique relationship between the strength of cast-in-place cylinders and cores of the same age. When cores can be drilled undamaged and tested in the same moisture condition as the cast-in-place cylinders, the strength of the cylinders can be expected to be on average 10 % higher than the cores at ages up to 91 days for specimens of the same size and length-diameter ratio.4  
4.2 Strength of cast-in-place cylinders may be used for various purposes, such as estimating the load-bearing capacity of slabs, determining the time of form and shore removal, and determining the effectiveness of curing and protection.
SCOPE
1.1 This test method covers the determination of strength of cylindrical concrete specimens that have been molded in place using special molds attached to formwork. This test method is limited to use in slabs where the depth of concrete is from 125 mm to 300 mm [5 in. to 12 in.].  
1.2 The text of this standard refers to notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
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