ASTM C495/C495M-12
(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
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 problems, 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: C495/C495M − 12
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 Department of Defense.
1. Scope* 3. Significance and Use
1.1 This test method covers the preparation of specimens 3.1 This test method provides standardized requirements for
and the determination of the compressive strength of light- sampling, molding, curing, and testing lightweight insulating
weight insulating concrete having an oven-dry density not concretes for the purpose of determining compliance with
3 3
exceeding 800 kg/m [50 lb/ft ] as determined by the proce- compressive strength and density specifications.
dures described herein.This test method covers the preparation
4. Apparatus
and testing of molded 75 by 150-mm [3 by 6-in.] cylinders.
4.1 Testing Machine—Use a testing machine as prescribed
1.2 The values stated in either SI units or inch-pound units
in Test Method C39/C39M.
are to be regarded separately as standard. The values stated in
each system may not be exact equivalents; therefore, each
4.2 Scales and Weights—Use scales and weights in weigh-
system shall be used independently of the other. Combining
ing specimens that conform to those specified in theApparatus
values from the two systems may result in non-conformance
Section of Test Method C109/C109M.
with the standard.
4.3 Drying Oven—Use an oven as specified in Test Method
1.3 This standard does not purport to address all of the
C88.
safety problems, if any, associated with its use. It is the
4.4 Molds—Use molds made of nonabsorbent materials or
responsibility of the user of this standard to establish appro-
of materials treated to reduce absorption, that are watertight,
priate safety and health practices and determine the applica-
1
and not subject to distortion of more than 2 mm [ ⁄16 in.] in any
bility of regulatory limitations prior to use.
dimension during molding and early curing of specimens. Coat
all mold surfaces that will be in contact with concrete except
2. Referenced Documents
single use plastic molds with wax or mineral oil, prior to use.
2
2.1 ASTM Standards:
1
Use molds having a diameter of 75 62mm[3 6 ⁄16 in.] and
C39/C39M Test Method for Compressive Strength of Cylin-
1
a length of 150 63mm[6 6 ⁄8 in.].
drical Concrete Specimens
C88 Test Method for Soundness of Aggregates by Use of
5. Sampling
Sodium Sulfate or Magnesium Sulfate
5.1 Sample fresh lightweight insulating concrete in accor-
C109/C109M Test Method for Compressive Strength of
dance with applicable provisions of Practice C172, with the
Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube
following exceptions:
Specimens)
5.1.1 Sampling from Pump Equipment—Fill a bucket of
C172 Practice for Sampling Freshly Mixed Concrete
approximately 9-L [10-qt] capacity by passing through the
C617 Practice for Capping Cylindrical Concrete Specimens
dischargestreamoftheconcretepumphosebeingusedtoplace
C670 Practice for Preparing Precision and Bias Statements
theconcrete,atthepointofplacementoftheconcrete.Exercise
for Test Methods for Construction Materials
care to ensure that the sample is representative of the pour,
avoiding the beginning or ending of the discharge from the
1 equipment. Prepare the test specimens as described in Section
This test method is under the jurisdiction of ASTM Committee C09 on
Concrete and Concrete Aggregatesand is the direct responsibility of Subcommittee
6, by filling them with a scoop of lightweight insulating
C09.21 on Lightweight Aggregates and Concrete.
concrete dipped from the bucket.
Current edition approved April 1, 2012. Published April 2012. Originally
5.1.2 Remixing Sample—Do not remix the sample.
approved in 1962. Last previous edition approved in 2007 as C495–07. DOI:
10.1520/C0495_C0495M-12.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 6. Test Specimens
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
6.1 Size and Shape—Use cylindrical test specimens 75 6 2
Standards volume information, refer to the standard’s Document Summary page on
1 1
the ASTM website. mm [3 6 ⁄16 in.] in diameter and 150 63mm[6 6 ⁄8 in.] in
*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
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C495/C495M − 12
length, with the base of each
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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:C495–07 Designation: C495/C495M – 12
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 Department of Defense.
1. Scope*
1.1This1.1 This test method covers the preparation of specimens and the determination of the compressive strength of
3
3 [50 lb/ft
lightweight insulating concrete having an oven-dry density not exceeding 50 lb/ft800 kg/m (800 kg/m ) as determined by
the procedures described herein. This test method covers the preparation and testing of molded 3 by 6-in. (75 by 150-mm)
cylinders.
1.2The values stated in inch-pound units are to be regarded as the standard. ] 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 problems, 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:
C39/C39M Test Method for Compressive Strength of Cylindrical Concrete Specimens
C88 Test Method for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate
C109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens)
C172 Practice for Sampling Freshly Mixed Concrete
C617 Practice for Capping Cylindrical Concrete Specimens
C670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
3. 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.
4. Apparatus
4.1 Testing Machine—Use a testing machine as prescribed in Test Method C39/C39M.
4.2 ScalesandWeights—UsescalesandweightsinweighingspecimensthatconformtothosespecifiedintheApparatusSection
of Test Method C109/C109M.
4.3 Drying Oven—Use an oven as specified in Test Method C88.
4.4 Molds—Use molds made of nonabsorbent materials or of materials treated to reduce absorption, that are watertight, and not
1
subject to distortion of more than in. (1.6 mm)2 mm [ ⁄16 in.] in any dimension during molding and early curing of specimens. Coat
all mold surfaces that will be in contact with concrete except single use plastic molds with wax or mineral oil, prior to use. Use
1 1
molds having a diameter of 375 6 in. (752 mm [3 6 1.6 mm) ⁄16 in.] and a length of 6150 6 in. (15063mm).3mm[6 6 ⁄8
in.].
1
This test method is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C09.21 on
Lightweight Aggregates and Concrete.
Current edition approved July 15, 2007. Published August 2007. Originally approved in 1962. Last previous edition approved in 1999 as C495–99a. DOI:
10.1520/C0495-07.
Current edition approved April 1, 2012. Published April 2012. Originally approved in 1962. Last previous edition approved in 2007 as C495–07. DOI:
10.1520/C0495_C0495M-12.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. ForAnnualBookofASTMStandards
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
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C495/C495M – 12
5. Sampling
5.1 Sample fresh lightweight insulating concrete in accordance with applicable provisions of Practice C172, wit
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