Standard Practice for Evaluating Durability of Building Construction Sealants by Laboratory Accelerated Weathering Procedures

SCOPE
1.1 This practice covers the method for the determination of the durability of a sealant based on its ability to function in cyclic movement maintaining adhesion and cohesion after repeated exposure to laboratory accelerated weathering procedures.
1.2 This practice describes two laboratory accelerated weathering procedures for evaluating the durability of a sealant.
1.3 The committee with jurisdiction over this standard is not aware of any comparable standards published by other organizations.
1.4 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.

General Information

Status
Historical
Publication Date
09-Jan-2002
Current Stage
Ref Project

Relations

Buy Standard

Standard
ASTM C1519-02 - Standard Practice for Evaluating Durability of Building Construction Sealants by Laboratory Accelerated Weathering Procedures
English language
4 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)

Designation: C 1519 – 02
Standard Practice for
Evaluating Durability of Building Construction Sealants by
1
Laboratory Accelerated Weathering Procedures
This standard is issued under the fixed designation C 1519; 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 G 155 Practice for Operating Xenon Arc Light Apparatus
4
for Exposure of Nonmetallic Materials
1.1 This practice covers the method for the determination of
the durability of a sealant based on its ability to function in
3. Terminology
cyclic movement maintaining adhesion and cohesion after
3.1 The definitions given in Terminology C 717 on terms
repeated exposure to laboratory accelerated weathering proce-
relating to building seals and sealants and in Terminology
dures.
G 113 on terms relating to natural and artificial weathering
1.2 This practice describes two laboratory accelerated
tests are applicable to this practice.
weathering procedures for evaluating the durability of a
sealant.
4. Significance and Use
1.3 The committee with jurisdiction over this standard is not
4.1 This practice describes the procedure to evaluate and/or
aware of any comparable standards published by other orga-
compare the durability of sealants when subjected to acceler-
nizations.
ated weathering and cyclic movement in a joint.
1.4 This standard does not purport to address all of the
4.2 Sealant installation procedures, design considerations
safety concerns, if any, associated with its use. It is the
and movement during cure affect the aging processes and are
responsibility of the user of this standard to establish appro-
fundamental to the success of any sealant. These factors are not
priate safety and health practices and determine the applica-
addressed with this test procedure.
bility of regulatory limitations prior to use.
4.3 The amount, type and frequency of movement a sealant
2. Referenced Documents experiences during its lifetime strongly depends on the mate-
rials used in construction and on the orientation of the joint
2.1 ASTM Standards:
toward sunlight and many other factors that are not uniform or
C 717 Terminology Relating to Building Seals and Seal-
2 consistent.
ants
4.4 Climatic exposures will differ with the orientation of the
C 719 Test Method for Adhesion and Cohesion of Elasto-
building and shading as well as with local and regional climatic
meric Joint Sealants Under Cyclic Movement (Hockman
2
conditions. Climates in a given location can vary from year to
Cycle)
year because of differences in solar radiation, temperature,
E 691 Practice for Conducting an Interlaboratory Study to
3
rainfall, and atmospheric conditions. Further, the quality and
Determine the Precision of a Test Method
intensity of solar radiation on the earth’s surface varies with
G 113 Terminology Relating to Natural and Artificial
4
geographic location, season, time of day, and cloud cover.
Weathering Tests of Nonmetallic Materials
4.5 Variations in results may be expected when operating
G 141 Guide for Addressing Variability in Exposure Testing
4 conditions are varied within the accepted limits of this practice.
on Nonmetallic Materials
Therefore, all test results using this practice must be accom-
G 151 Practice for Exposing Nonmetallic Materials in Ac-
panied by a report of the specific operating conditions as
celerated Test Devices That Use Laboratory Light
4 required in Section 11. Refer to Practice G 151 for detailed
Sources
information on the caveats applicable to use of results obtained
G 154 Practice for Operating Fluorescent Light Apparatus
4 according to this practice.
For UV Exposure to Nonmetallic Materials
4.6 The results of laboratory exposure cannot be directly
extrapolated to estimate an absolute rate of deterioration
1
This practice is under the jurisdiction of ASTM Committee C24 on Building
caused by natural weathering because the acceleration factor is
Seals and Sealants and is the direct responsibility of Subcommittee C24.32 on
material dependent and can be significantly different for each
Chemically Curing Sealants.
Current edition approved Jan. 10, 2002. Published April 2002. material and for different formulations of the same material.
2
Annual Book of ASTM Standards, Vol 04.07.
However, exposure of a similar material of known outdoor
3
Annual Book of ASTM Standards, Vol 04.06.
performance, a control, along with the test specimens allows
4
Annual Book of ASTM Standards, Vol 14.04.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C 1519
comparison of the durability relative to that of the control 6.5 Artificial Weathering Device—Choice of apparatus and
under the test conditions. Eva
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.