ASTM C1790-21

Standard Specification for Fly Ash Facing Brick

ABSTRACT
This specification covers fly ash brick intended for use in masonry, which are made from fly ash, water, and suitable mineral aggregates with or without the inclusion of other materials, and without the use of portland cement. Units that fall under this specification include a fly ash binder that undergoes hydraulic, pozzolanic, alkali-activated, or geopolymer reactions, or any combination thereof. These chemical reactions, in conjunction with the other materials in the units, provide the strength and durability necessary to meet the requirements of this specification. The specification includes cementitious materials, aggregates, and pigments for integrally colored concrete; physical requirements, strength, durability, and shrinkage; permissible variation in dimensions; finish and appearance; sampling and testing; and compliance. A table presents the strength, absorption, and density classification requirements addressed by this specification.
SCOPE
1.1 This specification covers fly ash brick intended for use in masonry, which are made from fly ash, water, and suitable mineral aggregates with or without the inclusion of other materials, and without the use of portland cement. This specification covers units intended for use in masonry, in both structural and facing applications.  
1.2 Units covered under this specification include a fly ash binder that undergoes hydraulic, pozzolanic, alkali-activated, or geopolymer reactions, or any combination thereof. These chemical reactions, in conjunction with the other materials in the units, provide the strength and durability necessary to meet the requirements of this specification.  
Note 1: This specification addresses properties of units formed using fly ash, aggregates, and other allowed binders. Although not required by this standard, users may request tests that establish assembly performance such as unit-mortar bond and fire resistance.  
1.3 This specification 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.  
1.4 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.  
1.5 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.  
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.

General Information

• Status: Published
• Publication Date: 31-May-2021
• ICS: 91.100.15 - Mineral materials and products
• Technical Committee: C15 - Manufactured Masonry Units
• Drafting Committee: C15.03 - Concrete Masonry Units and Related Units

Standards Content (Sample)

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.
Designation: C1790 −21
Standard Specification for
1
Fly Ash Facing Brick
This standard is issued under the fixed designation C1790; 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* 2. Referenced Documents
1.1 This specification covers fly ash brick intended for use 2.1 ASTM Standards:
in masonry, which are made from fly ash, water, and suitable C33 Specification for Concrete Aggregates
mineral aggregates with or without the inclusion of other C140 Test Methods for Sampling and Testing Concrete
materials, and without the use of portland cement. This Masonry Units and Related Units
specification covers units intended for use in masonry, in both C331 Specification for LightweightAggregates for Concrete
structural and facing applications. Masonry Units
C426 Test Method for Linear Drying Shrinkage of Concrete
1.2 Units covered under this specification include a fly ash
Masonry Units
binder that undergoes hydraulic, pozzolanic, alkali-activated,
C618 Specification for Coal Fly Ash and Raw or Calcined
or geopolymer reactions, or any combination thereof. These
Natural Pozzolan for Use in Concrete
chemical reactions, in conjunction with the other materials in
C979 Specification for Pigments for Integrally Colored Con-
the units, provide the strength and durability necessary to meet
crete
the requirements of this specification.
C989 Specification for Slag Cement for Use in Concrete and
NOTE 1—This specification addresses properties of units formed using
Mortars
fly ash, aggregates, and other allowed binders. Although not required by
C1232 Terminology for Masonry
this standard, users may request tests that establish assembly performance
C1240 Specification for Silica Fume Used in Cementitious
such as unit-mortar bond and fire resistance.
Mixtures
1.3 This specification references notes and footnotes, which
C1645 Test Method for Freeze-thaw and De-icing Salt
provide explanatory material. These notes and footnotes (ex-
Durability of Solid Concrete Interlocking Paving Units
cluding those in tables and figures) shall not be considered as
requirements of the standard.
3. Terminology
1.4 The values stated in inch-pound units are to be regarded
3.1 TermsdefinedinTerminologyC1232shallapplyforthis
as standard. The values given in parentheses are mathematical
specification.
conversions to SI units that are provided for information only
3.2 Definitions of Terms Specific to This Standard:
and are not considered standard.
3.2.1 fly ash brick, n—a masonry unit made from fly ash,
1.5 This standard does not purport to address all of the
water, and suitable aggregates with or without the inclusion of
safety concerns, if any, associated with its use. It is the
other materials and specifically without the inclusion of port-
responsibility of the user of this standard to establish appro-
land cement.
priate safety, health, and environmental practices and deter-
4. Materials
mine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accor-
4.1 Cementitious Materials—No portland cement shall be
dance with internationally recognized principles on standard-
used. Materials shall conform to the following applicable
ization established in the Decision on Principles for the
specifications:
Development of International Standards, Guides and Recom-
4.1.1 Pozzolans—Specification C618.
mendations issued by the World Trade Organization Technical
4.1.2 Slag Cement—Specification C989.
Barriers to Trade (TBT) Committee.
4.1.3 Silica Fume—Specification C1240.
4.2 Aggregates—Aggregates shall conform to the following
specifications, except for grading requirements:
1
This test method is under the jurisdiction of ASTM Committee C15 on
4.2.1 Normal Weight Aggregates—Specification C33.
Manufactured Masonry Units and is the direct responsibility of Subcommittee
C15.03 on Concrete Masonry Units and Related Units. 4.2.2 Lightweight Aggregates—Specification C331.
Current edition approved June 1, 2021. Published June 2021. Originally
4.3 Pigments for Integrally Colored Concrete—
approved in 2014. Last previous edition approved in 2015 as C1790 – 15. DOI:
10.1520/C1790-21. Specification C979.
*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
1

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C1790 − 21
TABLE 2 Maximum Permissible Varia
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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: C1790 − 15 C1790 − 21
Standard Specification for
1
Fly Ash Facing Brick
This standard is issued under the fixed designation C1790; 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 fly ash brick intended for use in masonry, which are made from fly ash, water, and suitable mineral
aggregates with or without the inclusion of other materials, and without the use of portland cement. This specification covers units
intended for use in masonry, in both structural and facing applications.
1.2 Units covered under this specification include a fly ash binder that undergoes hydraulic, pozzolanic, alkali-activated, or
geopolymer reactions, or any combination thereof. These chemical reactions, in conjunction with the other materials in the units,
provide the strength and durability necessary to meet the requirements of this specification.
NOTE 1—This specification addresses properties of units formed using fly ash, aggregates, and other allowed binders. Although not required by this
standard, users may request tests that establish assembly performance such as unit-mortar bond and fire resistance.
1.3 This specification 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.
1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information
only.mathematical conversions to SI units that are provided for information only and are not considered 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
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.
2. Referenced Documents
2.1 ASTM Standards:
C33 Specification for Concrete Aggregates
C140 Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
C331 Specification for Lightweight Aggregates for Concrete Masonry Units
C426 Test Method for Linear Drying Shrinkage of Concrete Masonry Units
C618 Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete
C979 Specification for Pigments for Integrally Colored Concrete
1
This test method 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, 2015June 1, 2021. Published June 2015June 2021. Originally approved in 2014. Last previous edition approved in 20142015 as C1790
– 14a.15. DOI: 10.1520/C1790-15.10.1520/C1790-21.
*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
1

---------------------- Page: 1 ----------------------
C1790 − 21
C989 Specification for Slag Cement for Use in Concrete and Mortars
C1232 Terminology for Masonry
C1240 Specification for Silica Fume Used in Cementitious Mixtures
C1645 Test Method for Freeze-thaw and De-icing Salt Durability of Solid Concrete Interlocking Paving Units
3. Terminology
3.1 Terms defined in Terminology C1232 shall apply for this specification.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 fly ash brick, n—a masonry unit made from fly ash, water, and suitable aggregates with or without the inclusion of other
materials and specifically without the inclusion of portland cement.
4. Materials
4.1 Cementitious Materials—No portland cement shall be used. Materials shall conform to the following applicable specifications:
4.1.1 Pozzolans—Specification C618.
4.1.2 Slag Cement—Specification C989.
4.1.3 Silica Fume—Specification C1240.
4.2 Aggregates—Aggregates shall conform to the following specifications, except that gradi
...