ASTM C1542/C1542M-16
(Test Method)Standard Test Method for Measuring Length of Concrete Cores
Standard Test Method for Measuring Length of Concrete Cores
SIGNIFICANCE AND USE
4.1 This test method provides two procedures for determining the length of a core obtained in accordance with either Test Method C42/C42M or Test Method C1604/C1604M. This length is used in conjunction with condition surveys, density and voids analysis, and other applications.
4.2 This procedure does not intend to include in the length measurement adhered particles not part of the concrete mixture.
4.3 Test Method C174/C174M also determines the length of concrete cores using a different measuring apparatus and procedure.
Note 1: Test Method C174/C174M uses an apparatus that establishes two parallel planes a known distance apart. The test method measures how much of that distance is not occupied by the core. The length of the core is determined by subtracting the measured distance from the known distance between the two parallel planes.
SCOPE
1.1 This test method is used to determine the length of a core drilled from concrete.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the inch-pound units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other.
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.
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Designation: C1542/C1542M − 16
StandardTest Method for
1
Measuring Length of Concrete Cores
This standard is issued under the fixed designation C1542/C1542M; 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* Method C42/C42M or Test Method C1604/C1604M. This
length is used in conjunction with condition surveys, density
1.1 This test method is used to determine the length of a
and voids analysis, and other applications.
core drilled from concrete.
4.2 This procedure does not intend to include in the length
1.2 The values stated in either SI units or inch-pound units
measurement adhered particles not part of the concrete mix-
are to be regarded separately as standard. Within the text, the
ture.
inch-pound units are shown in brackets. The values stated in
each system are not exact equivalents; therefore, each system
4.3 Test Method C174/C174M also determines the length of
shall be used independently of the other.
concrete cores using a different measuring apparatus and
procedure.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
NOTE 1—Test Method C174/C174M uses an apparatus that establishes
responsibility of the user of this standard to establish appro-
twoparallelplanesaknowndistanceapart.Thetestmethodmeasureshow
priate safety and health practices and determine the applica- much of that distance is not occupied by the core. The length of the core
is determined by subtracting the measured distance from the known
bility of regulatory limitations prior to use.
distance between the two parallel planes.
2. Referenced Documents
5. Apparatus
2
2.1 ASTM Standards:
5.1 Jaw Caliper, minimum depth of jaw 65 mm [2.5 in.].
C42/C42M Test Method for Obtaining and Testing Drilled
Measuring range 0 to 300 mm [0 to 12 in.]. Accuracy to 0.02
Cores and Sawed Beams of Concrete
mm [0.001 in.] or better.
C125 Terminology Relating to Concrete and Concrete Ag-
5.1.1 Offset points as part of caliper accessory kit to permit
gregates
length measurements at points not on the core perimeter.
C174/C174M Test Method for MeasuringThickness of Con-
crete Elements Using Drilled Concrete Cores
5.2 Ruler, 300 to 380 mm [12 to 15 in.] divided into 1 mm
1
C670 Practice for Preparing Precision and Bias Statements [ ⁄16 or 0.1 in.] graduations.
for Test Methods for Construction Materials
6. Test Specimens
C1604/C1604M Test Method for Obtaining and Testing
Drilled Cores of Shotcrete
6.1 Cores shall be obtained in accordance with Test Method
C42/C42M or Test Method C1604/C1604M.
3. Terminology
6.2 Cores shall be intact and be free of any coatings.
3.1 Definitions:
3.1.1 For definitions of terms used in this test method, refer
7. Procedure
to Terminology C125.
7.1 Jaw Caliper Procedure:
4. Significance and Use 7.1.1 Attach offset points to caliper jaws and initialize zero
reading.
4.1 This test method provides two procedures for determin-
7.1.2 Hold the specimen and place the open jaws of the
ing the length of a core obtained in accordance with either Test
caliper midpoint between the center and edge of the specimen.
Measureandrecordthevaluetothenearest 0.25mm[0.01in.].
1
This test method is under the jurisdiction of ASTM Committee C09 on
Rotate the specimen 90º, 180º, and 270º and repeat procedure.
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
C09.61 on Testing for Strength.
Obtain one measurement along the axis of the specimen and
Current edition approved Feb. 1, 2016. Published April 2016. Originally
record.
approved in 2002. Last previous edition approved in 2014 as C1542/C1542M – 14.
7.1.3 Re-zero the calipers. If the zero reading has changed
DOI: 10.1520/C1542_C1542M-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or by more than 0.25 mm [0.01 in.] take a new set of measure-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
ments as described in 7.1.2.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 7.2 Ruler Procedure:
*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 ----------------------
C1542/C1542M − 16
7.2.1 Position core with finished or formed face placed resultsofaninterlaboratorystudythatincluded12laboratories,
down against flat and level surface. Place ruler on flat surface eachmeasuringthreetimesacorefromeachofthreeconcretes.
1
against side of core and meas
...
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: C1542/C1542M − 14 C1542/C1542M − 16
Standard Test Method for
1
Measuring Length of Concrete Cores
This standard is issued under the fixed designation C1542/C1542M; 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 test method is used to determine the length of a core drilled from concrete.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the
inch-pound units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall
be used independently of the other.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
C42/C42M Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete
C125 Terminology Relating to Concrete and Concrete Aggregates
C174C174/C174M Test Method for Measuring Thickness of Concrete Elements Using Drilled Concrete Cores
C670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
C1604/C1604M Test Method for Obtaining and Testing Drilled Cores of Shotcrete
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this test method, refer to Terminology C125.
4. Significance and Use
4.1 This test method provides two procedures for determining the length of a core as measured along its axis. obtained in
accordance with either Test Method C42/C42M or Test Method C1604/C1604M. This length is used in conjunction with length
to diameter relationships, condition surveys, absorption, density and voids analysis, petrography, cement content analysis, and
other applications. It does not meet requirements for determining the distance between two parallel surfaces, which represents the
thickness of a structural element often used to establish compliance with design specifications as outlined by Test Method C174.
4.2 This procedure does not intend to include in the length measurement adhered particles not part of the concrete mixture.
4.3 Test Method C174/C174M also determines the length of concrete cores using a different measuring apparatus and
procedure.
NOTE 1—Test Method C174/C174M uses an apparatus that establishes two parallel planes a known distance apart. The test method measures how much
of that distance is not occupied by the core. The length of the core is determined by subtracting the measured distance from the known distance between
the two parallel planes.
5. Apparatus
5.1 Jaw Caliper, minimum depth of jaw 65 mm [2.5 in.]. Measuring range 0 to 300 mm [0 to 12 in.]. Accuracy to 0.030.02 mm
[0.001 in.].in.] or better.
1
This test method is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C09.61 on
Testing for Strength.
Current edition approved July 1, 2014Feb. 1, 2016. Published July 2014April 2016. Originally approved in 2002. Last previous edition approved in 20102014 as
C1542/C1542M – 02 (2010). 14. DOI: 10.1520/C1542_C1542M-14.10.1520/C1542_C1542M-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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 ----------------------
C1542/C1542M − 16
5.1.1 Offset points as part of caliper accessory kit to permit length measurements at points not on the core perimeter.
1
5.2 Ruler, 300 to 380 mm [12 to 15 in.] divided into 1 mm [ ⁄16 or 0.1 in.] graduations.
6. Test Specimens
6.1 Cores shall be obtained in accordance with Test Method C42/C42M or Test Method C1604/C1604M.
6.2 Cores shall be intact and be free of any coatings.
7. Procedure
7.1 Jaw Caliper Procedure:
7.1.1 Attach offset points to caliper jaws and initialize zero reading.
7.1.2 H
...
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