ASTM C1006-07
(Test Method)Standard Test Method for Splitting Tensile Strength of Masonry Units
Standard Test Method for Splitting Tensile Strength of Masonry Units
SIGNIFICANCE AND USE
Masonry units alone and within assemblages commonly fail in a tensile mode when loaded in compression to failure. These tensile stresses result from differences in modulus of elasticity and Poisson’ratio between the masonry unit and mortar. Additionally, the dissimilarity in behavior of the grout within cores of masonry units under load leads to tensile stresses in the units and results in a splitting failure.
This test method produces a line load along the bed surface of the masonry unit. The compressive load applied to the unit, imposed by means of bearing rods, results in a tensile stress distributed over the height of the unit for the split length of the unit. This test method can be conducted with the rod oriented either in the longitudinal direction or in the transverse direction of the bed face. The splitting tensile strength is calculated by the equation given in 7.1.
The test value provides an indicator of masonry-unit splitting tensile strength. Additionally, the presence of defects such as visible voids or impurities in masonry units may be revealed.
SCOPE
1.1 This test method covers the determination of the splitting tensile strength of masonry units.
1.2 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.
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
Relations
Buy Standard
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C1006 − 07
StandardTest Method for
1
Splitting Tensile Strength of Masonry Units
This standard is issued under the fixed designation C1006; 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* 3.3 The test value provides an indicator of masonry-unit
splitting tensile strength. Additionally, the presence of defects
1.1 This test method covers the determination of the split-
such as visible voids or impurities in masonry units may be
ting tensile strength of masonry units.
revealed.
1.2 The values stated in inch-pound units are to be regarded
4. Apparatus
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
4.1 Bearing Rods—Matched, paired steel bearing rods with
1
1
and are not considered standard.
diameters within ⁄to ⁄12 of the specimen height, of a
length greater than the length of the intended test area, and of
1.3 This standard does not purport to address all of the
straightness within 0.5 % of the specimen length shall be
safety concerns, if any, associated with its use. It is the
provided for each unit. Bearing rods that meet the straightness
responsibility of the user of this standard to establish appro-
requirement can be reused.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
4.2 Supplemental Bearing Bar or Plate—If the diameter or
largest dimension of the upper bearing face or lower bearing
2. Referenced Documents
block is less than the length of the specimen to be tested, a
2
2.1 ASTM Standards:
supplementary bearing bar or plate shall be used. The contact
E4 Practices for Force Verification of Testing Machines
surfaces of the bar or plate shall be machined to within 0.05 %
of planeness as measured on any line of contact of the bearing
3. Significance and Use
area. The bearing bar or plate shall have a width of at least 2
in. (51 mm), and a thickness not less than the distance from the
3.1 Masonry units alone and within assemblages commonly
edge of the spherical or rectangular bearing block to the end of
fail in a tensile mode when loaded in compression to failure.
the specimen. The bar or plate shall be used in such a manner
These tensile stresses result from differences in modulus of
that the load will be uniformly applied over the entire intended
elasticity and Poisson’s ratio between the masonry unit and
split length of the specimen.
mortar. Additionally, the dissimilarity in behavior of the grout
within cores of masonry units under load leads to tensile
4.3 Testing Machine:
stresses in the units and results in a splitting failure.
4.3.1 Thetestingmachineshallconformtotherequirements
of Practices E4, and may be of any type of sufficient capacity
3.2 This test method produces a line load along the bed
that will provide the rate of loading prescribed in 6.3.
surface of the masonry unit. The compressive load applied to
4.3.2 The upper, hardened metal bearing face shall be
the unit, imposed by means of bearing rods, results in a tensile
spherically seated and attached at the center of the upper head
stress distributed over the height of the unit for the split length
of the machine. The center of the sphere shall lie at the center
of the unit. This test method can be conducted with the rod
of the surface of the plate in contact with the specimen. The
oriented either in the longitudinal direction or in the transverse
bearing plate shall be closely held in its spherical seat but shall
direction of the bed face. The splitting tensile strength is
be free to turn in any direction; its perimeter at the ball face
calculated by the equation given in 7.1.
1
shall have at least ⁄4 in. (6.4 mm) clearance from the head of
the machine to allow for specimens whose test surfaces are not
1
This test method is under the jurisdiction of ASTM Committee C15 on
exactly parallel.The diameter of the bearing surface shall be at
Manufactured Masonry Units and is the direct responsibility of Subcommittee
least 5 in. (127 mm). The bearing block surfaces that will
C15.04 on Research.
contact the bearing bar or plate shall not depart from plane
Current edition approved Oct. 1, 2007. Published October 2007. Originally
approved in 1984. Last previous edition approved in 2001 as C1006 – 84 (2001).
surfaces by more than 0.05 %.
DOI: 10.1520/C1006-07.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5. Sampling
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.1 Selection—For the purpose of this test, full-size ma-
Stand
...
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:C 1006–84 (Reapproved 2001) Designation:C 1006–07
Standard Test Method for
1
Splitting Tensile Strength of Masonry Units
This standard is issued under the fixed designation C 1006; 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 covers the determination of the splitting tensile strength of masonry units.
1.2
1.2 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.
1.3 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:
E4 Practices for Force Verification of Testing Machines
3. Significance and Use
3.1 Masonry units alone and within assemblages commonly fail in a tensile mode when loaded in compression to failure.These
tensile stresses result from differences in modulus of elasticity and Poisson’s ratio between the masonry unit and mortar.
Additionally, the dissimilarity in behavior of the grout within cores of masonry units under load leads to tensile stresses in the units
and results in a splitting failure.
3.2 This test method produces a line load along the bed surface of the masonry unit. The compressive load applied to the unit,
imposed by means of bearing rods, results in a tensile stress distributed over the height of the unit for the split length of the unit.
This test method can be applied in conducted with the rod oriented either in the longitudinal (parallel to direction or in the face)
or transverse direction of the transverse direction.bed face. The splitting tensile strength is calculated by the equation given in 7.1.
3.3 The test value provides an indicator of masonry-unit splitting tensile strength.Additionally, the presence of defects such as
visible voids or impurities in masonry units may be revealed.
4. Apparatus
1 1
4.1 Bearing Rods— Matched, paired steel bearing rods with diameters within ⁄8 to ⁄12 of the specimen height, of a length
greater than the length of the intended test area, and of straightness within 0.5 % of the specimen length shall be provided for each
unit. Bearing rods that meet the straightness requirement can be reused.
4.2 Supplemental Bearing Bar or Plate—If the diameter or largest dimension of the upper bearing face or lower bearing block
is less than the length of the specimen to be tested, a supplementary bearing bar or plate shall be used. The contact surfaces of
thebarorplateshallbemachinedtowithin0.05 %ofplanenessasmeasuredonanylineofcontactofthebearingarea.Thebearing
bar or plate shall have a width of at least 2 in. (50.8(51 mm), and a thickness not less than the distance from the edge of the
spherical or rectangular bearing block to the end of the specimen. The bar or plate shall be used in such a manner that the load
will be uniformly applied over the entire intended split length of the specimen.
4.3 Testing Machine:
4.3.1 The testing machine shall conform to the requirements of Practices E 4, and may be of any type of sufficient capacity that
will provide the rate of loading prescribed in 6.3.
4.3.2 The upper, hardened metal bearing face shall be spherically seated and attached at the center of the upper head of the
machine. The center of the sphere shall lie at the center of the surface of the plate in contact with the specimen. The bearing plate
1
ThistestmethodisunderthejurisdictionofASTMCommitteeC15onManufacturedMasonryUnitsandisthedirectresponsibilityofSubcommitteeC15.04onResearch.
Current edition approved Jan. 5, 1984. Published February 1984.
Current edition approved Oct. 1, 2007. Published October 2007. Originally approved in 1984. Last previous edition approved in 2001 as C 1006 – 84 (2001).
2
Annual Book of ASTM Standards, Vol 03.01.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book ofASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes sec
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.