ASTM C495-07
(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 50 lb/ft3 (800 kg/m3) 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.
1.2 The values stated in inch-pound units are to be regarded as the standard.
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.
General Information
Relations
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C495–07
Standard Test Method for
1
Compressive Strength of Lightweight Insulating Concrete
This standard is issued under the fixed designation C495; 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* 4. Apparatus
1.1 This test method covers the preparation of specimens 4.1 Testing Machine—Use a testing machine as prescribed
and the determination of the compressive strength of light- in Test Method C39/C39M.
weight insulating concrete having an oven-dry density not 4.2 Scales and Weights—Use scales and weights in weigh-
3 3
exceeding 50 lb/ft (800 kg/m ) as determined by the proce- ing specimens that conform to those specified in theApparatus
dures described herein.This test method covers the preparation Section of Test Method C109/C109M.
and testing of molded 3 by 6-in. (75 by 150-mm) cylinders. 4.3 Drying Oven—Use an oven as specified in Test Method
1.2 The values stated in inch-pound units are to be regarded C88.
as the standard. 4.4 Molds—Use molds made of nonabsorbent materials or
1.3 This standard does not purport to address all of the of materials treated to reduce absorption, that are watertight,
1
safety problems, if any, associated with its use. It is the and not subject to distortion of more than ⁄16 in. (1.6 mm) in
responsibility of the user of this standard to establish appro- any dimension during molding and early curing of specimens.
priate safety and health practices and determine the applica- Coat all mold surfaces that will be in contact with concrete
bility of regulatory limitations prior to use. except single use plastic molds with wax or mineral oil, prior
1
to use. Use molds having a diameter of 3 6 ⁄16 in. (75 6 1.6
2. Referenced Documents
1
mm) and a length of 6 6 ⁄8 in. (1506 3 mm).
2
2.1 ASTM Standards:
5. Sampling
C39/C39M Test Method for Compressive Strength of Cy-
lindrical Concrete Specimens 5.1 Sample fresh lightweight insulating concrete in accor-
C88 Test Method for Soundness of Aggregates by Use of dance with applicable provisions of Practice C172, with the
Sodium Sulfate or Magnesium Sulfate following exceptions:
C109/C109M Test Method for Compressive Strength of 5.1.1 Sampling from Pump Equipment—Fill a bucket of
3
Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube approximately 10-qt (9-dm ) capacity by passing through the
Specimens) dischargestreamoftheconcretepumphosebeingusedtoplace
C172 Practice for Sampling Freshly Mixed Concrete theconcrete,atthepointofplacementoftheconcrete.Exercise
C617 Practice for Capping Cylindrical Concrete Specimens care to ensure that the sample is representative of the pour,
C670 Practice for Preparing Precision and Bias Statements avoiding the beginning or ending of the discharge from the
for Test Methods for Construction Materials equipment. Prepare the test specimens as described in Section
6, by filling them with a scoop of lightweight insulating
3. Significance and Use
concrete dipped from the bucket.
3.1 This test method provides standardized requirements for 5.1.2 Remixing Sample—Do not remix the sample.
sampling, molding, curing, and testing lightweight insulating
6. Test Specimens
concretes for the purpose of determining compliance with
1
compressive strength and density specifications. 6.1 Size and Shape—Use cylindrical test specimens 3 6 ⁄16
1
in. (75 6 1.6 mm) in diameter and 6 6 ⁄8 in. (150 6 3 mm)
1
in length, with the base of each specimen perpendicular to the
This test method is under the jurisdiction of ASTM Committee C09 on
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
longitudinal axis within the limits prescribed in 6.8.
C09.21 on Lightweight Aggregates and Concrete.
6.2 Number—Obtain at least four test specimens for com-
Current edition approved July 15, 2007. Published August 2007. Originally
pressive strength tests from each sample of lightweight insu-
approved in 1962. Last previous edition approved in 1999 as C495 – 99a. DOI:
lating concrete.
10.1520/C0495-07.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.3 Molding—In molding the specimens, place the concrete
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
in two approximately equal layers. Tap the sides of the mold
Standards volume information, refer to the standard’s Document Summary page on
lightly with a rubber mallet after placing each layer until the
the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.