ASTM C140-02

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
...