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ASTM C140-02

(Test Method)

Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units

Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units

SCOPE
1.1 These test methods cover the sampling and testing of concrete masonry units for dimensions, compressive strength, absorption, unit weight (density), and moisture content. Flexural load testing and ballast weight determination of concrete roof pavers are also covered.
Note 1—The testing laboratory performing these test methods should be evaluated in accordance with Practice C 1093.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.

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
Current Stage
Ref Project

Relations

Replaces
ASTM C140-01ae1 - Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
Effective Date
10-Feb-2002
Replaced By
ASTM C140-02a - Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
Effective Date
10-Jun-2002
Referred By
ASTM C901-18 - Standard Specification for Prefabricated Masonry Panels
Effective Date
10-Feb-2002
Referred By
ASTM C1790-21 - Standard Specification for Fly Ash Facing Brick
Effective Date
10-Feb-2002

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ASTM C140-02 - Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related UnitsASTM C140-02 - Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
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ASTM C140-02 - Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
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Standards Content (Sample)

Designation:C140–02
Standard Test Methods for
Sampling and Testing Concrete Masonry Units and Related
1
Units
This standard is issued under the fixed designation C 140; 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 * 3. Terminology
1.1 These test methods cover the sampling and testing of 3.1 Terminology defined in Terminology C 1209, Terminol-
concrete masonry units for dimensions, compressive strength, ogy C 1232, and Terminology E 6 shall apply for these test
absorption, unit weight (density), and moisture content. Flex- methods.
ural load testing and ballast weight determination of concrete
4. Sampling
roof pavers are also covered.
4.1 Selection of Test Specimens:
NOTE 1—The testing laboratory performing these test methods should
4.1.1 For purposes of test, full-size concrete masonry units
be evaluated in accordance with Practice C 1093.
shall be selected by the purchaser or authorized representative.
1.2 The values stated in inch-pound units are to be regarded
The selected specimens shall be of similar configuration and
as the standard. The values given in parentheses are for
dimensions. Specimens shall be representative of the whole lot
information only.
of units from which they are selected.
1.3 This standard does not purport to address all of the
4.1.2 The term “lot” refers to any number of concrete
safety concerns, if any, associated with its use. It is the
masonry units of any configuration or dimension manufactured
responsibility of the user of this standard to establish appro-
by the producer using the same materials, concrete mix design,
priate safety and health practices and determine the applica-
manufacturing process, and curing method.
bility of regulatory limitations prior to use.
4.2 Number of Specimens:
4.2.1 For the compressive strength, absorption, unit weight
2. Referenced Documents
(density), and moisture content determinations, six units shall
2.1 ASTM Standards:
beselectedfromeachlotof10 000unitsorfractionthereofand
C 90 Specification for Loadbearing Concrete Masonry
12 units from each lot of more than 10 000 and less than
2
Units
100 000 units. For lots of more than 100 000 units, six units
C 143 Test Method for Slump of Hydraulic- Cement Con-
shall be selected from each 50 000 units or fraction thereof
3
crete
contained in the lot.Additional specimens may be taken at the
C 1093 Practice for Accreditation of Testing Agencies for
discretion of the purchaser.
2
Unit Masonry
4.3 Identification:
C 1209 Terminology of Concrete Masonry Units and Re-
4.3.1 Mark each specimen so that it may be identified at any
2
lated Units
time. Markings shall cover not more than 5 % of the superficial
2
C 1232 Terminology of Masonry
area of the specimen.
4
E 4 Practices for Force Verification of Testing Machines
4.3.2 Weigh units for moisture content tests immediately
E 6 Terminology Relating to Methods of Mechanical Test-
after sampling and marking and record as W (received
r
4
ing
weight).
5. Measurement of Dimensions
1
These test methods are under the jurisdiction of ASTM Committee C15 on
5.1 Apparatus:
Manufactured Masonry Units and are the direct responsibility of Subcommittee
C15.03 on Concrete Masonry Units and Related Units.
5.1.1 Measure overall dimensions with a steel scale having
Current edition approved Feb. 10, 2002. Published May 2002. Originally 1
divisions not greater than ⁄10-in. (2.5-mm). Face shell and web
e1
published as C 140–38T. Last previous edition C 140–01a .
2 thicknesses shall be measured with a caliper rule having
Annual Book of ASTM Standards, Vol 04.05.
3
Annual Book of ASTM Standards, Vol 04.02.
4
Annual Book of ASTM Standards, Vol 03.01.
*ASummary 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 ----------------------
C140
1
of this effect is controlled by the stiffness of the plate, the size of the
divisions not greater than ⁄100-in. (0.25-mm) and having
1 specimen tested, and the strength of the specimen. Tested compressive
parallel jaws not less than ⁄2 in. (12.7 mm) nor more than 1 in.
strengths will typically increase with increased plate thickness and with
(25.4 mm) in length.
reduced distance to the furthest corner of the specimen. Some testing
5.2 Specimens—Three full-size units shall be measured for
laboratories have limitations that limit the practicality of eliminating plate
width, height, and length, and minimum thicknesses of face
bending entirely. Therefore the plate thickness requirements in 6.1 are
shells and webs.
intended to provide an adequate level of accuracy
...

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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)
Standard Test Method for Compressive Strength of Concrete Cylinders Cast in Place in Cylindrical Molds

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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.
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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.

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