ASTM C495/C495M-12(2019)
(Test Method)Standard Test Method for Compressive Strength of Lightweight Insulating Concrete
Standard Test Method for Compressive Strength of Lightweight Insulating Concrete
SIGNIFICANCE AND USE
3.1 This test method provides standardized requirements for sampling, molding, curing, and testing lightweight insulating concretes for the purpose of determining compliance with compressive strength and density specifications.
SCOPE
1.1 This test method covers the preparation of specimens and the determination of the compressive strength of lightweight insulating concrete having an oven-dry density not exceeding 800 kg/m3 [50 lb/ft3] as determined by the procedures described herein. This test method covers the preparation and testing of molded 75 by 150-mm [3 by 6-in.] cylinders.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 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.
General Information
Relations
Standards Content (Sample)
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.
Designation: C495/C495M − 12 (Reapproved 2019)
Standard Test Method for
1
Compressive Strength of Lightweight Insulating Concrete
This standard is issued under the fixed designation C495/C495M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube
Specimens)
1.1 This test method covers the preparation of specimens
C172/C172M Practice for Sampling Freshly Mixed Con-
and the determination of the compressive strength of light-
crete
weight insulating concrete having an oven-dry density not
3 3 C617/C617M Practice for Capping Cylindrical Concrete
exceeding 800 kg/m [50 lb/ft ] as determined by the proce-
Specimens
dures described herein.This test method covers the preparation
C670 Practice for Preparing Precision and Bias Statements
and testing of molded 75 by 150-mm [3 by 6-in.] cylinders.
for Test Methods for Construction Materials
1.2 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in
3. Significance and Use
each system may not be exact equivalents; therefore, each
3.1 This test method provides standardized requirements for
system shall be used independently of the other. Combining
sampling, molding, curing, and testing lightweight insulating
values from the two systems may result in non-conformance
concretes for the purpose of determining compliance with
with the standard.
compressive strength and density specifications.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Apparatus
responsibility of the user of this standard to establish appro-
4.1 Testing Machine—Use a testing machine as prescribed
priate safety, health, and environmental practices and deter-
in Test Method C39/C39M.
mine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accor- 4.2 Scales and Weights—Use scales and weights in weigh-
dance with internationally recognized principles on standard- ing specimens that conform to those specified in theApparatus
ization established in the Decision on Principles for the
Section of Test Method C109/C109M.
Development of International Standards, Guides and Recom-
4.3 Drying Oven—Use an oven as specified in Test Method
mendations issued by the World Trade Organization Technical
C88/C88M.
Barriers to Trade (TBT) Committee.
4.4 Molds—Use molds made of nonabsorbent materials or
of materials treated to reduce absorption, that are watertight,
2. Referenced Documents
1
and not subject to distortion of more than 2 mm [ ⁄16 in.] in any
2
2.1 ASTM Standards:
dimension during molding and early curing of specimens. Coat
C39/C39M Test Method for Compressive Strength of Cylin-
all mold surfaces that will be in contact with concrete except
drical Concrete Specimens
single use plastic molds with wax or mineral oil, prior to use.
C88/C88M Test Method for Soundness of Aggregates by
1
Use molds having a diameter of 75 62mm[3 6 ⁄16 in.] and
Use of Sodium Sulfate or Magnesium Sulfate
1
a length of 150 63mm[6 6 ⁄8 in.].
C109/C109M Test Method for Compressive Strength of
5. Sampling
1
This test method is under the jurisdiction of ASTM Committee C09 on
5.1 Sample fresh lightweight insulating concrete in accor-
Concrete and Concrete Aggregatesand is the direct responsibility of Subcommittee
dance with applicable provisions of Practice C172/C172M,
C09.21 on Lightweight Aggregates and Concrete.
with the following exceptions:
Current edition approved Dec. 15, 2019. Published December 2019. Originally
5.1.1 Sampling from Pump Equipment—Fill a bucket of
approved in 1962. Last previous edition approved in 2012 as C495/C495M–12.
DOI: 10.1520/C0495_C0495M-12R19.
approximately 9-L [10-qt] capacity by passing through the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
dischargestreamoftheconcretepumphosebeingusedtoplace
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
theconcrete,atthepointofplacementoftheconcrete.Exercise
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. care to ensure that the sample is representative of the pour,
*A Summary of Changes section appears at the end of this standard
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