ASTM E1494-92(1996)

Standard Practice for Encapsulants for Spray-or-Trowel-Applied Friable Asbestos-Containing Building Materials

SCOPE
1.1 This practice covers encapsulants intended to reduce or eliminate the release of asbestos fibers from a matrix of friable spray- or trowel-applied asbestos-containing materials.  
1.2 This practice includes: (1) a series of laboratory tests to show whether an encapsulant is capable of acceptable performance on a specified asbestos-free model matrix, and (2) a series of determinations to be conducted in the field at each location for which encapsulation has been accepted, to show whether a given encapsulant is acceptable on the specific asbestos-containing matrix.  
1.3 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.  
1.4 This practice 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 practice to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Sep-1996
• Technical Committee: D22 - Air Quality
• Drafting Committee: D22.07 - Sampling, Analysis, Management of Asbestos, and Other Microscopic Particles

Relations

• Replaced By: ASTM E1494-92(2002) - Standard Practice for Encapsulants for Spray- or Trowel-Applied Friable Asbestos-Containing Building Materials
• Effective Date: 15-Sep-1992

Standards Content (Sample)

Designation: E 1494 – 92 (Reapproved 1996) An American National Standard
Standard Practice for
Encapsulants for Spray- or Trowel-Applied Friable
1
Asbestos-Containing Building Materials
This standard is issued under the fixed designation E 1494; 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.
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1. Scope Resistive Materials Applied to Structural Members
E 849 Practice for Safety and Health Requirements Relating
1.1 This practice covers encapsulants intended to reduce or
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to Occupational Exposure to Asbestos
eliminate the release of asbestos fibers from a matrix of friable
2.2 ANSI Standards:
spray- or trowel-applied asbestos-containing materials.
Z9.2 Fundamentals Governing Design and Operations of
1.2 This practice includes: (1) a series of laboratory tests to
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Local Exhaust Systems
show whether an encapsulant is capable of acceptable perfor-
7
Z88.1 Practices for Respiratory Protections
mance on a specified asbestos-free model matrix, and (2)a
2.3 Other Standards:
series of determinations to be conducted in the field at each
1-GP-205M205 Sealer for Application to Asbestos-Fiber
location for which encapsulation has been accepted, to show
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Releasing Materials
whether a given encapsulant is acceptable on the specific
2.4 OSHA Regulations:
asbestos-containing matrix.
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29 CFR 1910.1001 Asbestos
1.3 The values stated in SI units are to be regarded as the
standard. The values in parentheses are for information only.
3. Terminology
1.4 This standard does not purport to address all of the
3.1 Definitions—For definitions of building terms, refer to
safety concerns, if any, associated with its use. It is the
Terminology E 631.
responsibility of the user of this standard to establish appro-
3.2 Definitions of Terms Specific to This Standard:
priate safety and health practices and determine the applica-
3.2.1 bridging encapsulant, n—an encapsulant that forms a
bility of regulatory limitations prior to use.
discrete layer on the surface of an in situ asbestos matrix.
2. Referenced Documents 3.2.2 encapsulant, n—for friable asbestos-containing build-
ing materials, a water insoluble material that surrounds or
2.1 ASTM Standards:
embeds asbestos in an adhesive matrix to prevent release of
D 543 Practices for Evaluating the Resistance of Plastics to
2
fibers.
Chemical Reagents
3.2.3 matrix, n—a combination of one or more materials
D 4226 Test Methods for Impact Resistance of Rigid Poly-
3
that provides a representative specimen of the system combi-
(Vinyl Chloride) (PVC) Building Products
nation.
D 4240 Test Method for Airborne Asbestos Concentration
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3.2.4 penetrating encapsulant, n—an encapsulant that is
in Workplace Atmosphere
absorbed by an in situ asbestos matrix without leaving a
E 84 Test Method for Surface Burning Characteristics of
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discrete surface layer.
Building Materials
3.2.5 substrate, n—a structural building component to
E 119 Test Methods for Fire Tests of Building Construction
5
which a surfacing material is applied.
and Materials
E 605 Test Methods for Thickness and Density of Sprayed
4. Significance and Use
Fire-Resistive Material (SFRM) Applied to Structural
6 4.1 The purpose of this practice is to provide criteria for the
Members
6 selection of an encapsulant once the decision to encapsulate an
E 631 Terminology of Building Constructions
asbestos installation has been made. It is assumed that the users
E 736 Test Method for Cohesion/Adhesion of Sprayed Fire-
of this practice have already made a decision to encapsulate
friable asbestos-containing material and that this decision is
1
This practice is under the jurisdiction of ASTM E-6 on Performance of
Buildings and is the direct responsibility of Subcommitte E06.21 on Serviceability.
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Current edition approved Sept. 15,1992. Published December 1992. Available from American National Standards Institute, 11 W. 42nd St., 13th
2
Annual Book of ASTM Standards, Vol 08.01. Floor, New York, NY 10036.
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Annual Book of ASTM Standards, Vol 08.04. Available from Canadian General Standards Board, Ottawa, Ontario K1A 1G6
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Discontinued; see 1994 Annual Book of ASTM Standards, Vol 11.03. Canada.
5 9
Annual Book of ASTM Standards, Vol 04.07. Available from Occupational Safety and Health Review Commission, 1825 D
6
Annual Book of ASTM Standards, Vol 04.11. St. NW, Washington, DC 20006.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
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E 1494
appropriate. Test Method D 4240 and Practice E 849 shall be in the field). Encapsulants shall be applied with equipment
consulted for the measurement of airborne fibrous materials in equivalent to that used for application under field conditions.
the environmental air space.
5.1.6 After a
...