ASTM E1494-92

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

General Information

• Status: Historical
• Publication Date: 31-Dec-1991
• Technical Committee: D22 - Air Quality
• Drafting Committee: D22.07 - Sampling, Analysis, Management of Asbestos, and Other Microscopic Particles

Standards Content (Sample)

ASTM E1494 92 W 0759510 0516608 296
AMERICAN SOCIETY FOR TESTINGAND MATERIALS
191 6 Race St Philadelphia, Pa 191 03
41)) Designation: E 1494 - 92
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
If not listed in lhe current combined index. will appear in the nexi edliin.
Standard Practice for
E nc'a psu I a n t s for Spray - o r -T ro w e I - A p p I i ed Fria b I e As best os -
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. '
29.2 Fundamentals Governing Design and Operations of
1, Scope
Local Exhaust Systems6
1.1 This practice covers encapsulants intended to reduce
288.1 Practices for Respiratory Protections6
or eliminate the release of asbestos fibers from a matrix of
2.3 Other. Standurds:
friable spray- or trowel-applied asbestos-containing mate-
1 -GP-205M Sealer for Application to Asbestos-Fiber Re-
rials.
'leasing Materials7
1.2 This practice includes: (i) a series of laboratory tests
2.4 OSIIA Kcgirlutions:
to show whether an encapsulant is capable of acceptable
29CFR 1910.1001 Asbestos8
performance on a specified asbestos-free model matrix, and
(2) a series of determinations to be conducted in the field at
3. Terminology
each location for which encapsulation has been accepted, to
3. I DeJinitions-For definitions of building terms, refer to
show whether a given encapsulant is acceptable on the
Terminology E 63 1.
specific asbestos-containing matrix.
3.2 Descriptions of Terms SpeciJic to This Standard:
1.3 The values stated in SI units are to be regarded as the
3.2.1 encapsulant-for friable asbestos-containing birìld- -
standard. The values in parentheses are for information only.
ing materials, a water insoluble material that surrounds or
1.4 This practice does not purport to address all of the
embeds asbestos in an adhesive matrix to prevent release of
safety problems, if any, associated with its use. It is the
fibers.
responsibility of the user of this practice to establish appro-
3.2.2 bridging encapsulant-an encapsulant that forms a
priate safity and health practices and determine the applicu-
discrete layer on the surface of an in situ asbestos matrix.
hilily (.$regulatory limitations prior to irse.
3.2.3 penetrating encapsulant-an encapsulant that is ab-
sorbed by an in situ asbestos matrix without leaving a
2. Referenced Documents
discrete surface layer.
2. I ASTM Standards:
3.2.4 matrix-a combination of one or more materials
D 543 Test Method for Resistance of Plastics to Chemical
that provides a representative specimen of the system com-
Reagents2
bination.
D4226 Test Method for Impact Resistance of Rigid
3.2.5 substrate-a structural building component to
Poly(Viny1 Chloride) (PVC) Building Products3
which a surfacing material is applied.
D 4240 Test Method for Airborne Asbestos Concentra-
tions in Workplace Atmosphere4
4. Significance and Use
E 84 Test Method for Surface Burning Characteristics of
4.1 The purpose of this practice is to provide criteria for
Building Materials5
the selection of an encapsulant once the decision to encap-
E 119 Method for Fire Tests of Building Construction
sulate an asbestos installation has been made. It is assumed
and Materials5
that the users of this practice have already made a decision to
E 605 Test Methods for Thickness and Density of
encapsulate friable asbestos-containing material and that this
Sprayed Fire-Resistive Materials Applied to Structural
decision is appropriate. Test Method D 4240 and Practice
Members5
E 849 shall be consulted for the measurement of airborne
E 63 1 Terminology of Building Constructions5
fibrous materials in the environmental air space.
E 136 Test Method for Cohesion/Adhesion of Sprayed
4.2 Since existing asbestos-containing materials installed
Fire-Resistive Materials Applied to Structural Members5
in buildings may have been applied for a variety of purposes
E 849 Practice for Safety and Health Requirements Re-
in addition to fire-resistance, encapsulant properties and
lating to Occupational Exposure to Asbestos4
performance characteristics not addressed in this practice
2.2 ANSI Standards:
may be important for preservation of original qualities of the
asbestos-containing material, and should be considered.
I This practice is under the jurisdiction of ASTM E-6 on Performance of
Building Construction and is the direct responsibility of Subcommitte E06.21 on
Serviceability.
Available from Amencan National Standards Institute. I I W. 4?nd SI., 13th
Current edition approved Sept. IS, 1992. Published December 1992. Floor, New York, NY 10036.
2 Arrniral Bouk ufASfA4 Slandards,
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