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Description of ASTM-C639 2024ASTM C639-24Active Standard: Standard Test Method for Rheological (Flow) Properties of Elastomeric SealantsASTM C639Scope 1.1 This test method describes a laboratory procedure for the determination of rheological (flow) properties of single- and multi-component chemically curing sealants for use in building construction. 1.2 Other suitable flow characteristics may be agreed upon between the seller and purchaser or specifier. Special non-sag properties and lower flow characteristics may be required for use in sloping joints where absolute leveling is not desired. Note 1: The sealants are supplied in various rheological properties ranging from pourable fluids to stiff non-sagging pastes. Multi-component sealants are supplied as a base component with an activator or curing agent separately packaged. After mixing the multiple parts, the sealant is ready for application. Single-component sealants are supplied ready for use upon opening of the package and usually depend on the external environment for cure. 1.3 This test method describes four types of joint sealants: 1.3.1 Type I—Single-component flowable or self-leveling, 1.3.2 Type II—Single-component non-sag, 1.3.3 Type III—Multi-component flowable or self-leveling, and 1.3.4 Type IV—Multi-component non-sag. 1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.5 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. 1.6 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. Keywords flow; rheology; sag; ICS Code ICS Number Code 91.100.50 (Binders. Sealing materials) DOI: 10.1520/C0639-24 The following editions for this book are also available...This 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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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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