ASTM C90-01a

Standard Specification for Loadbearing Concrete Masonry Units

SCOPE
1.1 This specification covers hollow and solid (see 5.3 and 5.4) concrete masonry units made from portland cement, water, and mineral aggregates with or without the inclusion of other materials. There are three classes of concrete masonry units: (1) normal weight, (2) medium weight, and (3) lightweight. There are two types of concrete masonry units: (1) normal weight, (2) medium weight, and (3) lightweight. These units are suitable for both loadbearing and nonloadbearing applications.
1.2 Concrete masonry units covered by this specification are made from lightweight or normal weight aggregates, or both.
1.3 The text of this standard 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.
Note 1—When particular features are desired such as surface textures for appearance or bond, finish, color, or particular properties such as weight classification, higher compressive strength, fire resistance, thermal performance or acoustical performance, these features should be specified separately by the purchaser. Local suppliers should be consulted as to the availability of units having the desired features.

General Information

• Status: Historical
• Publication Date: 09-Feb-2002
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C15 - Manufactured Masonry Units
• Drafting Committee: C15.03 - Concrete Masonry Units and Related Units

Relations

• Replaces: ASTM C90-01 - Standard Specification for Loadbearing Concrete Masonry Units
• Effective Date: 10-Feb-2002
• Replaced By: ASTM C90-02 - Standard Specification for Loadbearing Concrete Masonry Units
• Effective Date: 10-Feb-2002
• Referred By: ASTM C946-23 - Standard Practice for Construction of Dry-Stacked, Surface-Bonded Walls
• Effective Date: 10-Feb-2002
• Referred By: ASTM F2956-22 - Standard Test Methods for Anchor Systems Used for Detention Hollow Metal Systems
• Effective Date: 10-Feb-2002
• Referred By: ASTM C744-21 - Standard Specification for Prefaced Concrete and Calcium Silicate Masonry Units
• Effective Date: 10-Feb-2002
• Referred By: ASTM C140/C140M-23 - Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
• Effective Date: 10-Feb-2002
• Referred By: ASTM C1232-21a - Standard Terminology for Masonry
• Effective Date: 10-Feb-2002
• Referred By: ASTM C1283-15(2021) - Standard Practice for Installing Clay Flue Lining
• Effective Date: 10-Feb-2002
• Referred By: ASTM C1780-23a - Standard Practice for Installation Methods for Cement-based Adhered Masonry Veneer
• Effective Date: 10-Feb-2002
• Referred By: ASTM C1492-22 - Standard Specification for Concrete Roof Tile
• Effective Date: 10-Feb-2002
• Referred By: ASTM C129-22 - Standard Specification for Nonloadbearing Concrete Masonry Units
• Effective Date: 10-Feb-2002
• Referred By: ASTM D7147-21 - Standard Specification for Testing and Establishing Allowable Loads of Joist Hangers
• Effective Date: 10-Feb-2002
• Referred By: ASTM E2266-22 - Standard Guide for Design and Construction of Low-Rise Frame Building Wall Systems to Resist Water Intrusion
• Effective Date: 10-Feb-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 90 – 01a
Standard Specification for
1
Loadbearing Concrete Masonry Units
This standard is issued under the fixed designation C 90; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope * Natural Pozzolan for Use as a Mineral Admixture in
2
Concrete
1.1 This specification covers hollow and solid (see 5.3 and
C 989 Specification for Ground Granulated Blast-Furnace
5.4) concrete masonry units made from portland cement, water,
2
Slag for Use in Concrete and Mortars
and mineral aggregates with or without the inclusion of other
4
C 1157 Performance Specification for Hydraulic Cement
materials. There are three classes of concrete masonry units:
C 1209 Terminology of Concrete Masonry Units and Re-
(1) normal weight, (2) medium weight, and (3) lightweight.
3
lated Units
These units are suitable for both loadbearing and nonloadbear-
3
C 1232 Terminology of Masonry
ing applications.
C 1314 Test Method for Constructing and Testing Masonry
1.2 Concrete masonry units covered by this specification are
Prisms Used to Determine Compliance with Specified
made from lightweight or normal weight aggregates, or both.
3
Compressive Strength of Masonry
1.3 The text of this standard references notes and footnotes
E 519 Test Method for Diagonal Tension (Shear) in Ma-
which provide explanatory material. These notes and footnotes
3
sonry Assemblages
(excluding those in tables and figures) shall not be considered
E 72 Methods for Conducting Strength Tests of Panels for
as requirements of the standard.
5
Building Construction
1.4 The values stated in inch-pound units are to be regarded
as the standard. The values given in parentheses are for
3. Terminology
information only.
3.1 Terminology defined in Terminology C 1209 and Ter-
NOTE 1—When particular features are desired such as surface textures
minology C 1232 shall apply for this specification.
for appearance or bond, finish, color, or particular properties such as
weight classification, higher compressive strength, fire resistance, thermal
4. Materials
performance or acoustical performance, these features should be specified
4.1 Cementitious Materials—Materials shall conform to the
separately by the purchaser. Local suppliers should be consulted as to the
following applicable specifications:
availability of units having the desired features.
4.1.1 Portland Cement—Specification C 150.
2. Referenced Documents
4.1.2 Modified Portland Cement—Portland cement con-
2.1 ASTM Standards: forming to Specification C 150, modified as follows:
2
4.1.2.1 Limestone—Calcium carbonate, with a minimum
C 33 Specification for Concrete Aggregates
C 140 Test Methods for Sampling and Testing Concrete 85 % CaCO3 content, is permitted to be added to the cement,
3
Masonry Units and Related Units provided these requirements of Specification C 150 as modi-
4
fied are met:
C 150 Specification for Portland Cement
C 331 Specification for Lightweight Aggregates for Con- (1) Limitation on Insoluble Residue—1.5 %.
2
(2) Limitation on Air Content of Mortar—Volume percent,
crete Masonry Units
C 426 Test Method for Drying Shrinkage of Concrete Ma- 22 % max.
3
(3) Limitation on Loss on Ignition—7 %.
sonry Units
4
C 595 Specification for Blended Hydraulic Cements 4.1.3 Blended Hydraulic Cements—Specification C 595.
4.1.4 Hydraulic Cement—Specification C 1157.
C 618 Specification for Coal Fly Ash and Raw or Calcined
4.1.5 Pozzolans—Specification C 618.
4.1.6 Blast Furnace Slag Cement—Specification C 989.
1
4.2 Aggregates—Aggregates shall conform to the following
This specification is under the jurisdiction of ASTM Committee C15 on
Manufactured Masonry Units and is the direct responsibility of Subcommittee specifications, except that grading requirements shall not
C15.03 on Concrete Masonry Units and Related Units.
necessarily apply:
Current edition approved Aug. 10, 2001. Published October 2001. Originally
4.2.1 Normal Weight Aggregates—Specification C 33.
published as C 90–31T. Last previous edition C 90–01.
2
Annual Book of ASTM Standards, Vol 04.02.
3
Annual Book of ASTM Standards, Vol 04.05.
4 5
Annual Book of ASTM Standards, Vol 04.01. Annual Book of ASTM Standards, Vol 04.07.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
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C90
applicable provisions of Test Methods E 72, C 1314, E 519, or other
4.2.2 Lightweight Aggregates—Specification C 331.
applicable tests and the approp
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