ASTM C1589/C1589M-18(2023) PDF
Standard Practice for Outdoor Weathering of Construction Seals and Sealants
Standard Practice for Outdoor Weathering of Construction Seals and Sealants
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 10
- Дата публикации:
- 1 февраля 2023 г.
- Издание:
- C1589/C1589M
- ICS:
- 91.100.50
SIGNIFICANCE AND USE 4.1 Tests conducted in accordance with this practice are used to evaluate the weatherability of construction seals and sealant materials when they are exposed to outdoor weather conditions. The weatherability of seals and sealants in actual outdoor use can be very different depending on the location because of differences in solar radiation, moisture, temperature, pollutants, and other factors. Sealant color may also affect weatherability. 4.2 This practice allows for three options: Option 1 – Procedure A in which the effect of movement during weathering is not considered; Option 2 – Procedure B in which specimens are weathered in conjunction with movement based on thermal changes. The applied strain is proportional to a combination of the temperature at the time the equipment is set up and subsequent thermal changes. This option closely mimics the actual movements that occur in many sealant installations, but is less repeatable than the movement in Procedure C; Option 3 – Procedure C in which the strain during weathering is manually applied. This procedure allows for excellent control and repeatability, but is less representative of movement in actual use conditions than the movement in Procedure B. Options 2 and 3 have been added to this practice based on peer reviewed scientific literature demonstrating that applied strain separately and in combination with other weathering stresses causes changes in the weatherability of sealants. 4.3 The type, frequency and amount of movement of sealants varies with location and may affect weatherability. It cannot be assumed, therefore, that results from one exposure in a single location will be useful for determining weatherability in a different location. Exposures in several locations with different climates (for example, solar radiation, moisture, temperature, pollutants, biological and other factors) that represent a broad range of anticipated service conditions are recommended. 4.4 It is strongly recommended tha... SCOPE 1.1 This practice describes outdoor exposure procedures to be used as part of a test designed to determine the weatherability of building construction, seals and sealants. Note 1: See Practice G24 for Exposures to Daylight Filtered Through Glass. 1.2 This practice includes three procedures for outdoor weathering. Procedure A exposes specimens to outdoor weathering without movement. Procedure B and Procedure C are, respectively, continuous natural and periodic manual techniques for subjecting specimens to the combination of cyclic movement and exposure to outdoor weathering. 1.3 This practice is limited to the method by which the construction seals or sealants are exposed to outdoor weathering as part of a test program. It refers to the types of evaluations to be performed following the outdoor exposure but does not describe the test methods. 1.4 Means of evaluation of the effects of weathering will depend on the intended use of the test material. 1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.6 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. 1.7 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.
Abstract
Overview
ASTM C1589/C1589M-18(2023), titled "Standard Practice for Outdoor Weathering of Construction Seals and Sealants," is an internationally recognized ASTM standard that establishes procedures to evaluate the weatherability of construction sealants and seals when exposed to actual outdoor weather conditions. Developed in alignment with World Trade Organization (WTO) guidelines for global standards, this practice is essential for accurately assessing how building sealants perform over time in various climates, considering exposure to solar radiation, moisture, temperature shifts, and pollutants. The standard recognizes that real-world conditions can vary significantly and offers flexible procedures for a range of testing needs in construction materials testing.
Key Topics
Outdoor Weathering Evaluations
- Assess the performance and durability of construction seals and sealants under natural environmental stressors.
- Recognize the impact of variables such as solar radiation, temperature, moisture, atmospheric pollutants, and biological factors.
Test Procedures and Options
- Procedure A: Exposes test specimens to outdoor weathering with no movement. Suitable for baseline weatherability assessment.
- Procedure B: Subjects specimens to cyclic movement based on environmental temperature changes, simulating more realistic building joint conditions.
- Procedure C: Involves periodic manual movement of specimens for enhanced consistency and repeatability, though less representative of actual service conditions.
Test Site and Specimen Recommendations
- Use diverse climatological locations for comprehensive results.
- Encourage the use of control materials with known weatherability alongside test specimens.
- Ensure at least three replicates per test material to account for variability.
Limitations
- The practice focuses on exposure methods, not on performance evaluation tests, which are left to the user’s discretion based on the material’s intended application.
- Weatherability results are site-specific and may not predict outcomes in different locations or over the long term.
Applications
Who Should Use This Standard?
- Manufacturers of construction sealants
- Testing laboratories
- Building and construction material specifiers
- Quality assurance teams
- Product compliance professionals
Practical Value
- Confirms a product’s suitability for various climate conditions prior to market release or specification in construction projects.
- Provides comparative data on new versus control (reference) sealant materials, supporting R&D and product improvement.
- Aids in warranty, certification, and regulatory approval processes.
Real-World Use Cases
- Product Performance Verification: Compare weather durability across different sealant formulations.
- Site Suitability Studies: Assess sealant longevity for projects in areas with harsh climates (e.g., deserts, seashores, industrial zones).
- Quality Benchmarks: Establish performance baselines for value engineering and life-cycle costing.
- Compliance Documentation: Support claims related to sealant resistance to UV, moisture, and movement for building code conformance.
Related Standards
To ensure complete and accurate testing, ASTM C1589/C1589M references or aligns with several other ASTM standards and terminology documents in the field:
- ASTM C719: Adhesion and Cohesion of Elastomeric Joint Sealants under Cyclic Movement.
- ASTM C1135: Tensile Adhesion Properties of Structural Sealants.
- ASTM G7: Practice for Natural Weathering of Materials.
- ASTM G24: Conducting Exposures to Daylight Filtered Through Glass.
- ASTM G147: Conditioning and Handling of Nonmetallic Materials for Weathering.
- ASTM G178: Determining the Activation Spectrum of a Material.
- ASTM C717, E631, G113, E772: Terminology and definitions for consistency in building sealants and weathering tests.
By adhering to ASTM C1589/C1589M-18(2023), industry professionals ensure a robust, representative approach to testing outdoor weathering in construction seals and sealants, supporting confidence in material performance and compliance with international construction quality standards.
Технические детали
- Технический комитет
- C24 - Building Seals and Sealants
- SKU
- ASTM C1589/C1589M-18(2023)
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