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ASTM C656-94a

(Specification)

Standard Specification for Structural Insulating Board, Calcium Silicate

Standard Specification for Structural Insulating Board, Calcium Silicate

SCOPE
1.1 This specification covers structural insulating board for general thermal insulating, fire-resistive, and marine bulkhead applications. The rigid, preformed structural insulating board is for use at temperatures up to 1700oF (927oC). For specific applications, the actual temperature limit shall be agreed upon between the manufacturer and the purchaser.
1.2 The structural insulating board maintains its structural integrity after immersion in water.
1.3 Rapid cycling over a wide temperature range is not recommended. Such use may result in surface cracking.
1.4 The values stated in inch-pound units are to be regarded as the standard. The SI equivalents of inch-pound units are given in parentheses.
1.5 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.
1.6 When the installation or use of thermal insulation materials, accessories and systems, may pose safety or health problems, the manufacturer shall provide the user appropriate current information regarding any known problems associated with the recommended use of the company's products, and shall also recommend protective measures to be employed in their safe utilization. The user shall establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.

General Information

Status
Historical
Publication Date
31-Dec-2000
Technical Committee
C16 - Thermal Insulation
Drafting Committee
C16.20 - Homogeneous Inorganic Thermal Insulations
Current Stage
Ref Project

Relations

Replaced By
ASTM C656-94a(2001) - Standard Specification for Structural Insulating Board, Calcium Silicate
Effective Date
01-Jan-2001
Referred By
ASTM C1558-19 - Standard Guide for Development of Standard Data Records for Computerization of Thermal Transmission Test Data for Thermal Insulation
Effective Date
01-Jan-2001

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ASTM C656-94a - Standard Specification for Structural Insulating Board, Calcium SilicateASTM C656-94a - Standard Specification for Structural Insulating Board, Calcium Silicate
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ASTM C656-94a - Standard Specification for Structural Insulating Board, Calcium Silicate
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 656 – 94a
Standard Specification for
Structural Insulating Board, Calcium Silicate
This standard is issued under the fixed designation C 656; 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 C 203 Test Methods for Breaking Load and Flexural Prop-
erties of Block-Type Thermal Insulation
1.1 This specification covers structural insulating board for
C 303 Test Method for Density of Preformed Block Type
general thermal insulating, fire-resistive, and marine bulkhead
Thermal Insulation
applications. The rigid, preformed structural insulating board is
C 356 Test Method for Linear Shrinkage of Preformed
for use at temperatures up to 1700°F (927°C). For specific
High-Temperature Thermal Insulation Subjected to Soak-
applications, the actual temperature limit shall be agreed upon
ing Heat
between the manufacturer and the purchaser.
C 390 Criteria for Sampling and Acceptance of Preformed
1.2 The structural insulating board maintains its structural
Thermal Insulation Lots
integrity after immersion in water.
C 411 Test Method for Hot-Surface Performance of High-
1.3 Rapid cycling over a wide temperature range is not
Temperature Thermal Insulation
recommended. Such use may result in surface cracking.
C 447 Practice for Estimating the Maximum Use Tempera-
1.4 The values stated in inch-pound units are to be regarded
ture of Thermal Insulations
as the standard. The SI equivalents of inch-pound units are
C 518 Test Method for Steady-State Heat Flux Measure-
given in parentheses.
ments and Thermal Transmission Properties by Means of
1.5 This standard does not purport to address all of the
the Heat Flow Meter Apparatus
safety concerns, if any, associated with its use. It is the
C 1058 Practice for Temperatures for Evaluating and Re-
responsibility of the user of this standard to establish appro-
porting
priate safety and health practices and determine the applica-
D 1037 Test Methods for Evaluating the Properties of
bility of regulatory limitations prior to use.
Wood-Base Fiber and Particle Panel Materials
1.6 When the installation or use of thermal insulation
E 136 Test Method for Behavior of Materials in a Vertical
materials, accessories and systems, may pose safety or health
Tube Furnace at 750°C
problems, the manufacturer shall provide the user appropriate
current information regarding any known problems associated
3. Terminology
with the recommended use of the company’s products, and
3.1 Definitions—The definitions in Terminology C 168 shall
shall also recommend protective measures to be employed in
apply to the terms used in this specification.
their safe utilization. The user shall establish appropriate safety
and health practices and determine the applicability of regula-
4. Classification
tory requirements prior to use.
4.1 The structural insulating boards shall be of the following
2. Referenced Documents types:
4.1.1 Type I—Maximum use temperature 1400°F (760°C).
2.1 ASTM Standards:
4.1.2 Type II—Maximum use temperature 1700°F (927°C).
C 165 Test Method for Measuring Compressive Properties
2 4.2 The structural insulating boards shall be of the following
of Thermal Insulations
grades:
C 168 Terminology Relating to Thermal Insulating Materi-
3 3
2 4.2.1 Grade 1—Typical density 36 lb/ft (577 kg/m ).
als
3 3
4.2.2 Grade 2—Typical density 46 lb/ft (737 kg/m ).
C 177 Test Method for Steady-State Heat Flux Measure-
3 3
4.2.3 Grade 3—Typical density 60 lb/ft (961 kg/m ).
ments and Thermal Transmission Properties by Means of
3 3
2 4.2.4 Grade 4—Typical density 14 lb/ft (224 kg/m ).
the Guarded-Hot-Plate Apparatus
3 3
4.2.5 Grade 5—Typical density 18 lb/ft (288 kg/m ).
3 3
4.2.6 Grade 6—Typical density 28 lb/ft (449 kg/m ).
3 3
This specification is under the jurisdiction of Committee C-16 on Thermal
4.2.7 Grade 7—Typical density 40 lb/ft (641 kg/m ).
Insulation and is the direct responsibility of Subcommittee C16.20 on Homogeneous
Inorganic Thermal Insulations.
Current edition approved July 15, 1994. Published September 1994. Originally
published as C 656 – 70. Last previous edition C 656 – 94. Annual Book of ASTM Standards, Vol 04.10.
2 4
Annual Book of ASTM Standards, Vol 04.06. Annual Book of ASTM Standards, Vol 04.07.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
C 656
3 3
4.2.8 Grade 8—Typical density 60 lb/ft (961 kg/m ). have visible defects, such as major cracks, lumps, or excessive
departure from planeness, which adversely affect service quali-
5. Ordering Information
ties.
5.1 The type, grade, and dimensions shall be specified by
10. Qualification Requirements
the purchaser.
5.2 Inspection of the material may be specified by the 10.1 Unless otherwise specified, the following requirements
shall be employed for the purpose of initial material or product
purchaser.
5.3 When a certification or test report, or both, are required, qualification.
10.1.1 Compressive strength,
it shall be specified by the purchaser.
10.1.2 Screw holding strength,
6. Materials and Manufacture
10.1.3 Linear shrinkage and temperate of use,
6.1 Calcium silicate structural insulating board shall be
10.1.4 Apparent thermal conductivity, and
composed of hydrated calcium silicate with natural or man-
10.1.5 Combustion characteristics.
made fibers or fillers, or a combination thereof. Asbestos shall
11. Sampling
not be used as an ingredient or component of the product.
11.1 Calcium silicate structural insulating boards shall be
7. Other Requirements
sampled in accordance with Criteria C 390. Specific provisions
7.1 Calcium silicate structural insulating board shall con-
for sampling shall be agreed upon between the purchaser and
form to the physical and mechanical requirements specified in
the supplier.
Table 1.
12. Test Methods
8. Dimensions and Permissible Variations
12.1 Dimensions and Density—Use Test Method C 303,
8.1 Calcium silicate structural insulating board shall be
except that specimens shall be full-size sheets for determina-
available in the following dimensions:
tion of length and width and at least 12-in. (300-mm) square
Lengths Widths Thicknesses for dete
...

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Note 3: The quality of the results produced by this standard are dependent on the competence of the personnel performing the procedure and the capability, calibration, and maintenance of the equipment used. Agencies that meet the criteria of Specification D3666 are generally considered capable of competent and objective testing, sampling, inspection, etc. Users of this standard are cautioned that compliance with Specification D3666 alone does not completely ensure reliable results. Reliable results depend on many factors; following the suggestions of Specification D3666 or some similar acceptable guideline provides a means of evaluating and controlling some of those factors.
SCOPE
1.1 This test method covers procedures for the determination of kinematic viscosity of liquid asphalts, road oils, and distillation residues of liquid asphalts all at 60 °C [140 °F] and of liquid asphalt binders at 135 °C [275 °F] (see table notes, 11.1) in the range from 6 to 100 000 mm2/s [cSt].  
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5.1 The determination of the creep rate provides information on the behavior of sandwich constructions under constant applied force. Creep is defined as deflection under constant force over a period of time beyond the initial deformation as a result of the application of the force. Deflection data obtained from this test method can be plotted against time, and a creep rate determined. By using standard specimen constructions and constant loading, the test method may also be used to evaluate creep behavior of sandwich panel core-to-facing adhesives.  
5.2 This test method provides a standard method of obtaining flexure creep of sandwich constructions for quality control, acceptance specification testing, and research and development.  
5.3 Factors that influence the sandwich construction creep response and shall therefore be reported include the following: facing material, core material, adhesive material, methods of material fabrication, facing stacking sequence and overall thickness, core geometry (cell size), core density, core thickness, adhesive thickness, specimen geometry, specimen preparation, specimen conditioning, environment of testing, specimen alignment, loading procedure, speed of testing, facing void content, adhesive void content, and facing volume percent reinforcement. Further, facing and core-to-facing strength and creep response may be different between precured/bonded and co-cured facesheets of the same material.
SCOPE
1.1 This test method covers the determination of the creep characteristics and creep rate of flat sandwich constructions loaded in flexure, at any desired temperature. Permissible core material forms include those with continuous bonding surfaces (such as balsa wood and foams) as well as those with discontinuous bonding surfaces (such as honeycomb).  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text the inch-pound units are shown in brackets. 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.

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