ASTM C1884-23a

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.
Designation: C1884 − 23 C1884 − 23a
Standard Specification for
Manufactured Concrete Ballast Units
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*
1.1 This specification covers dry-cast, manufactured concrete units that are primarily used for ballast applications. 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 units 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.
NOTE 2—Previously, there were two standards that covered units used for ballast. Specification C1491 was for concrete roof pavers, primarily used for
roof ballast and protection of roof membrane. Specification C1884 was for units for ballast for rooftop equipment. Due to the similarity in these units
and application, this standard now serves as the single standard for manufactured concrete units used in all ballast applications.
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.
2. Referenced Documents
2.1 ASTM Standards:
C33/C33M Specification for Concrete Aggregates
C140/C140M Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
C150/C150M Specification for Portland Cement
C331/C331M Specification for Lightweight Aggregates for Concrete Masonry Units
C595/C595M Specification for Blended Hydraulic Cements
C618 Specification for Coal Ash and Raw or Calcined Natural Pozzolan for Use in Concrete
C979/C979M Specification for Pigments for Integrally Colored Concrete
C989/C989M Specification for Slag Cement for Use in Concrete and Mortars
This specification is under the jurisdiction of ASTM Committee C15 on Manufactured Masonry Units and is the direct responsibility of Subcommittee C15.03 on
Concrete Masonry Units and Related Units.
Current edition approved June 1, 2023Dec. 1, 2023. Published June 2023December 2023. Originally approved in 2018. Last previous edition approved in 20222023 as
C1884–22. DOI: 10.1520/C1884-23–23. DOI: 10.1520/C1884-23A
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C1884 − 23a
C1157/C1157M Performance Specification for Hydraulic Cement
C1232 Terminology for Masonry
C1240 Specification for Silica Fume Used in Cementitious Mixtures
C1262/C1262M Test Method for Evaluating the Freeze-Thaw Durability of Dry-Cast Segmental Retaining Wall Units and
Related Concrete Units
C1491 Specification for Concrete Roof Pavers (Withdrawn 2023)
3. Terminology
3.1 Terminology defined in Terminology C1232 shall apply to this specification.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 concrete ballast unit, n—a manufactured concrete unit used primarily to provide weight for stabilizing materials.
3.2.1.1 Discussion—
Example applications for concrete ballast units are ballast for photovoltaic arrays, or paving to protect roofing membranes.
4. Material
4.1 Cementitious Materials—Materials Cementitious materials shall conform to the following applicable specifications:
4.1.1 Portland Cement—Specification C150/C150M.
4.1.2 Modified Portland Cement—Portland cement conforming to Specification C150/C150M, modified as follows:
4.1.2.1 Limestone—Limestone, with a minimum 85 % calcium carbonate (CaCO ) content, shall be permitted to be added to the
cement, provided the requirements of Specification C150/C150M are modified as follows:
(1) Limitation on Insoluble Residue—1.5 %.
(2) Limitation on Air Content of Mortar—Volume percent, 22 % max.
(3) Limitation on Loss on Ignition—7 %.
(1) Limestone—If calcium carbonate is added to the cement, the CaCO content shall not be less than 85 %.
(2) Limitation on Insoluble Residue—1.5 %.
(3) Limitation on Air Content of Mortar—Volume percent, 22 % max.
(4) Limitation on Loss on Ignition—7 %.
4.1.3 Blended Cements—Specification C595/C595M.
4.1.4 Hydraulic Cement—Specification C1157/C1157M.
4.1.5 Pozzolans—Specification C618.
4.1.6 Blast Furnace Slag Cement—Specification C989/C989M.
4.1.7 Silica Fume—Specification C1240.
4.2 Aggregates—Aggregates shall conform to the following specifications, except for grading requirements:
4.2.1 Normal Weight Aggregates—Specification C33/C33M.
4.2.2 Lightweight Aggregates—Specification C331/C331M.
NOTE 3—The grading requirements of Specifications C33/C33M and C331/C331M may not be suitable for concrete ballast unit production. Because of
this, producers are allowed to modify grading to meet their needs and the requirements of this specification.
4.3 Pigments for Integrally Colored Concrete—Specification C979/C979M.
The last approved version of this historical standard is referenced on www.astm.org.
C1884 − 23a
4.4 Other Constituents—Air-entraining agents, integral water repellents, and other constituents shall be previously established as
suitable for use in concrete ballast units and shall conform to applicable ASTM standards or shall be shown by test or experience
satisfactory to the purchaser to be not detrimental to the durability of the units or any material customarily used in conjunction
with concrete ballast units.
5. Physical Requirements
5.1 At the time of delivery to the purchaser, the units shall conform to the physical requirements of Table 1 when tested in
accordance with 7.2.
NOTE 4—The pu
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