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Description of ASTM-C1519 2010ASTM C1519 - 10Standard Test Method for Evaluating Durability of Building Construction Sealants by Laboratory Accelerated Weathering ProceduresActive Standard ASTM C1519 | Developed by Subcommittee: C24.40 Book of Standards Volume: 04.07 ASTM C1519Significance and Use
This test method describes the procedure to evaluate or compare, or both, the durability of sealants when subjected to accelerated weathering and cyclic movement in a joint. Sealant installation procedures, design considerations and movement during cure affect the aging processes and are fundamental to the success of any sealant. These factors are not addressed with this test method. The amount, type and frequency of movement a sealant experiences during its lifetime strongly depends on the materials used in construction and on the orientation of the joint toward sunlight and many other factors that are not uniform or consistent. Climatic exposures will differ with the orientation of the building and shading as well as with local and regional climatic conditions. Climates in a given location can vary from year to year because of differences in solar radiation, temperature, rainfall, and atmospheric conditions. Further, the quality and intensity of solar radiation on the earth's surface varies with geographic location, season, time of day, and cloud cover. Variations in results may be expected when operating conditions are varied within the accepted limits of this test method. Therefore, all test results using this test method must be accompanied by a report of the specific operating conditions as required in Section 12. Refer to Practice G151 for detailed information on the caveats applicable to use of results obtained according to this test method. The results of laboratory exposure cannot be directly extrapolated to estimate an absolute rate of deterioration caused by natural weathering because the acceleration factor is material dependent and can be significantly different for each material and for different formulations of the same material. However, exposure of a similar material of known outdoor performance, a control, along with the test specimens allows comparison of the durability relative to that of the control under the test conditions. Evaluation in terms of relative durability also greatly improves the agreement in test results among different laboratories. Results of this procedure will depend on the care that is taken to operate the equipment according to Practices G154 and G155 . Significant factors include regulation of the line voltage, freedom from salt or other deposits from water, temperature control, humidity control, where applicable, condition and age of the burners and filters in xenon arc equipment, and age of lamps in fluorescent UV equipment. Note 1Additional information on sources of variability and on strategies for addressing variability in the design, execution and data analysis of laboratory accelerated exposure tests is found in Guide G141 . 1. Scope
1.1 This test method 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 test method describes two laboratory accelerated weathering procedures for evaluating the durability of a sealant. 1.3 RILEM TC139 DBS is related to this test method. 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. ASTM Standards C717 Terminology of Building Seals and Sealants C719 Test Method for Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement (Hockman Cycle) C1442 Practice for Conducting Tests on Sealants Using Artificial Weathering Apparatus E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods G113 Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials G141 Guide for Addressing Variability in Exposure Testing of Nonmetallic Materials G151 Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources G154 Practice for Operating Fluorescent Light Apparatus for UV Exposure of Nonmetallic Materials G155 Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials RILEM Standard RILEMTC139DBS Determination of changes in adhesion, cohesion, and appearance of elastic weatherproofing sealants for high movement facade joints after exposure to artificial weatheringKeywords artificial aging; artificial weathering; building sealants; durability; joint movement; sealants; weathering; Accelerated aging/testing--sealants; Artificial weathering; Durability--building materials/applications; Durability--sealants; Joint movement; Sealants; Structural building materials/applications ; ICS Code ICS Number Code 91.040.01 (Buildings in general) DOI: 10.1520/C1519-10 ASTM International is a member of CrossRef. ASTM C1519This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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