ASTM C166-87(1997)

Standard Test Method for Covering Capacity and Volume Change Upon Drying of Thermal Insulating Cement

SCOPE
1.1 Wet covering capacity and volume change upon drying are often of major importance in the application of thermal insulating cement. These properties can be easily determined at the same time that the determinations of dry covering capacity are made. Therefore, the procedures for determining these three properties are covered together in this test method.  
1.2 The values stated in inch-pound units are to be regarded as 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.

General Information

• Status: Historical
• Publication Date: 09-May-1997
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C16 - Thermal Insulation
• Drafting Committee: C16.31 - Chemical and Physical Properties

Relations

• Replaced By: ASTM C166-05 - Standard Test Method for Covering Capacity and Volume Change Upon Drying of Thermal Insulating Cement
• Effective Date: 01-Apr-2005
• Referred By: ASTM C449-07(2019) - Standard Specification for Mineral Fiber Hydraulic-Setting Thermal Insulating and Finishing Cement
• Effective Date: 10-May-1997
• Referred By: ASTM C195-07(2019) - Standard Specification for Mineral Fiber Thermal Insulating Cement
• Effective Date: 10-May-1997
• Referred By: ASTM C196-00(2019) - Standard Specification for Expanded or Exfoliated Vermiculite Thermal Insulating Cement
• Effective Date: 10-May-1997

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C166–87 (Reapproved 1997)
Standard Test Method for
Covering Capacity and Volume Change Upon Drying of
Thermal Insulating Cement
This standard is issued under the fixed designation C 166; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope of dry cement) when the cement is mixed with the recom-
mended amount of water and molded in accordance with
1.1 Wet covering capacity and volume change upon drying
Section 5.
are often of major importance in the application of thermal
3.4 Definitions inTerminology C 168 shall be considered as
insulating cement.These properties can be easily determined at
applying to the terms used in this test method.
the same time that the determinations of dry covering capacity
are made. Therefore, the procedures for determining these
4. Apparatus
three properties are covered together in this test method.
4.1 Mold—Arigid mold having inside dimensions of 1 by 8
1.2 The values stated in inch-pound units are to be regarded
by 30 in. (25.4 by 203 by 726 mm) with one end and one face
as the standard. The values given in parentheses are for
open, and a piece of wood or other suitable material 1 by 1 ⁄2
information only.
by7 ⁄8in.(25.4by38.1by200mm)indimensionsforsquaring
1.3 This standard does not purport to address all of the
up the end of the test specimen toward the open end of the
safety concerns, if any, associated with its use. It is the
mold.
responsibility of the user of this standard to establish appro-
4.2 Wax Paper—Sheets of wax paper 8 by 30 in. (200 by
priate safety and health practices and determine the applica-
762 mm) in dimensions.
bility of regulatory limitations prior to use.
4.3 Engine Oil.
2. Referenced Documents 4.4 Trowel—A 16-in. (about 400-mm) rectangular plaster-
er’s trowel.
2.1 ASTM Standards:
4.5 SteelRules—Steelrules18and36in.(about ⁄2and1m)
C 163 Practice for Mixing Thermal Insulating Cement
in length accurate to within ⁄64 in. (0.5 mm).
Samples
4.6 Depth Gage—A depth gage consisting of a rigid,
C 168 Terminology Relating to Thermal Insulating Materi-
2 pointed rod approximately ⁄8 in. (3 mm) in diameter, fitted
als
with a flat disk about ⁄2 in. (13 mm) in diameter which may be
3. Terminology moved along the rod either by a sliding action or by means of
threads.
3.1 dry covering capacity—the area covered in “ft , 1 in. in
thickness/100 lb of dry cement” (m , 1 cm in thickness/100 kg
5. Sampling and Mixing
of dry cement) after the wet cement has been molded and dried
5.1 The cement shall be sampled and mixed in accordance
to constant weight in accordance with Section 5.
with Practice C 163.
3.2 volume change upon drying—the percentage change in
volume of the wet molded cement that occurs when the dry
6. Procedure
cement is mixed with the recommended amount of water,
6.1 Oil the inside surfaces of the mold well, or line them
molded, and dried to constant weight in accordance with
with wax paper in order to prevent the cement from sticking to
Section 5.
the sides and to permit convenient removal of the specimen.
3.3 wet covering capacity—the area covered in “ft , 1 in. in
Then place the mixed cement in the mold.
thickness/100 lb of dry cement’’ (m , 1 cm in thickness/100 kg
6.2 Trowel the cement in one layer and in two directions
lengthwise of the mold without unnecessary compacting, until
This test method is under the jurisdiction of ASTM Committee C-16 on the surface is smooth and flush with the top edges of the mold.
Thermal Insulation and is the direct responsibility of Subcommittee C16.31 on
Sufficient wet cement shall be used to fill the mold when the
Chemical and Physical Properties.
piece of wood or other suitable material is in place in the open
Current edition approved Aug. 28, 1987. Published December 1987. Originally
end of the mold and in contact with the cement, in order to
published as C166 – 41. Last previous edition C166 – 80.
Annual Book of ASTM Standards, Vol 04.06.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
C166
make a square end and to prevent movement of the cement 7. Calculations
after troweling is completed.
7.1 Values in U.S. Customary Units—Calculate the wet and
6.3 Measure the thickness at nine points on the top surface
dry covering capacities and the volume change upon drying as
of the sample as indicated in Fig. 1.
follows:
6.4 Make the thickness measurements within an accuracy of
C 5 dbl/1.44W (1)
w
62 % by means of a depth gage. Carefully push the point rod
C 5 d b l /1.44W
d 1 1 1
of the depth gage through the cement until it comes in contact
with the bottom of the mold. Hold the rod constantly in a V 5 @~dbl 2 d b l !/dbl# 3 100
1 1 1
vertical position and adjust the disk until its flat surface just
where:
comes into contact with the top surface of the cement. Secure
C = wet covering capacity, ft , 1 in. in thickness per 100
w
the disk to the pin before withdrawing the gage from the
lb of dry cement,
cement. Determine the thickness of the cement by measuring
C = dry covering capacity, ft , 1 in. in thickness per 100
d
the distance from the flat surface of the disk to the pointed end
lb of dry cement,
of the rod with a steel rule or by some other suitable scale. Do
V = percentage volume chang
...