1.1 本指南提供了有关性能因素的信息，如移动、施工公差和其他应考虑的影响，以正确确定密封剂接缝尺寸。它还提供了程序，以帮助计算和确定所需的密封剂接缝宽度，使其能够正确响应这些移动和影响。本指南中的信息主要适用于单组分和多组分冷涂接缝密封剂，其次适用于预固化密封剂挤出物（当与适当准备的接缝开口和基材表面一起使用时）。 1.2 尽管本文主要针对建筑物和其他区域墙壁密封胶接缝的理解和设计，但本文包含的信息也适用于出现在水平板和铺路系统以及各种倾斜建筑表面的密封胶接缝。 1.3 本指南不描述接缝密封剂的选择和性能 ( 1. ) 2. 也不包括其使用和安装，指南对此进行了描述 C1193 . 1.4 有关设计用于抵抗爆炸和其他影响的防护玻璃系统，请参阅指南 C1564 结合本指南。 1.5 本指南不适用于使用气溶胶泡沫密封剂密封的接缝设计。 1.6 有关结构密封胶玻璃系统，请参阅指南 C1401 结合本指南。 1.7 以国际单位制表示的数值应视为标准值。国际单位制后括号中给出的值仅供参考，不被视为标准值。本指南中的国际单位符合IEEE/ASTM SI 10-1997。 1.8 对本指南具有管辖权的委员会不知道其他组织发布的任何可比标准。 1.9 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.10 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 出于美学考虑，设计专业人士希望限制外墙和新建筑其他位置上密封胶接缝的间距和宽度。 有必要分析影响密封剂接缝的性能因素，尤其是公差，以确定接缝是否具有耐久性，是否能够有效地保持密封，防止空气和水的通过，并且不会过早劣化。如果不了解性能因素和公差，并将其包括在密封胶接头的设计中，则密封胶可能达到其耐久性极限，并且很可能出现故障。 4.2 由于空气渗透或渗出、水渗透以及建筑系统和材料的劣化，密封剂接缝故障可能导致建筑能源使用增加。渗透水会导致混凝土、砖和石头等多孔易碎建筑材料剥落；黑色金属的腐蚀；以及有机物质的分解等影响。 密封接头失效导致内表面受潮而导致坠落，可能会导致人身伤害。由于隐蔽和潮湿区域的有机生长，建筑物室内空气质量可能会受到影响。变质通常很难修复，而且修复成本非常高，修复工作的成本通常大大超过密封胶接缝的原始成本。 4.3 本指南适用于具有既定移动能力的密封剂，尤其是符合规范的弹性密封剂 C920 最小移动能力额定值为±12 1. / 2. %. 通常情况下，密封胶的粘度小于±12 1. / 2. %移动能力可用于接缝宽度尺寸计算；然而，使用此类密封剂的接缝宽度通常会变得太大，无法实际考虑和安装。 它也适用于具有符合规范的既定移动能力的预固化密封剂挤出物 C1518 . 4.4 本指南旨在描述密封剂接缝设计中通常考虑的一些性能因素和公差。提供方程式和示例计算，以帮助本指南用户确定单组分和多组分液体密封剂安装在适当准备的接缝开口中时所需的宽度和深度。本指南的用户应意识到，导致为移动而设计的密封胶接头性能不佳的最大因素是工艺差。这会导致密封剂和密封剂接头组件安装不当。本指南所述方法的成功取决于实现足够的工艺。 4.5 新结构的接缝可以根据本指南中的建议进行设计，也可以根据已达到使用寿命结束且需要例行维护的接缝或需要进行故障补救工作的接缝进行设计。指导 C1193 设计密封接头时也应咨询。未能按照其指南安装密封剂及其组件可能并经常会导致接头设计失败。 4.6 发表在各种ASTM特殊技术出版物（STP）上的同行评审论文提供了密封剂接缝宽度计算的附加信息和示例，扩展了本指南中所述的信息 ( 2- 5. ) . 对于目前的技术水平无法确定特定条件的标准或存在许多需要考虑的变量的情况，提供了一个参考章节以供进一步考虑。 4.7 为了帮助本指南用户查找特定信息，本指南中包含了指南编号章节及其标题的详细列表 附录X1 .

1.1 This guide provides information on performance factors such as movement, construction tolerances, and other effects that should be accounted for to properly establish sealant joint size. It also provides procedures to assist in calculating and determining the required width of a sealant joint enabling it to respond properly to those movements and effects. Information in this guide is primarily applicable to single- and multi-component, cold-applied joint sealants and secondarily to precured sealant extrusions when used with properly prepared joint openings and substrate surfaces. 1.2 Although primarily directed towards the understanding and design of sealant joints for walls for buildings and other areas, the information contained herein is also applicable to sealant joints that occur in horizontal slabs and paving systems as well as various sloped building surfaces. 1.3 This guide does not describe the selection and properties of joint sealants ( 1 ) 2 , nor their use and installation, which is described by Guide C1193 . 1.4 For protective glazing systems that are designed to resist blast and other effects refer to Guide C1564 in combination with this guide. 1.5 This guide is not applicable to the design of joints sealed with aerosol foam sealants. 1.6 For structural sealant glazing systems refer to Guide C1401 in combination with this guide. 1.7 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. SI units in this guide are in conformance with IEEE/ASTM SI 10-1997. 1.8 The Committee having jurisdiction for this guide is not aware of any comparable standards published by other organizations. 1.9 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. 1.10 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. ====== Significance And Use ====== 4.1 Design professionals, for aesthetic reasons, have desired to limit the spacing and width of sealant joints on exterior walls and other locations of new buildings. Analysis of the performance factors and especially tolerances that affect a sealant joint is necessary to determine if a joint will have durability and be effective in maintaining a seal against the passage of air and water and not experience premature deterioration. If performance factors and tolerances are not understood and included in the design of a sealant joint, then the sealant may reach its durability limit and failure is a distinct possibility. 4.2 Sealant joint failure can result in increased building energy usage due to air infiltration or exfiltration, water infiltration, and deterioration of building systems and materials. Infiltrating water can cause spalling of porous and friable building materials such as concrete, brick, and stone; corrosion of ferrous metals; and decomposition of organic materials, among other effects. Personal injury can result from a fall incurred due to a wetted interior surface as a result of a failed sealant joint. Building indoor air quality can be affected due to organic growth in concealed and damp areas. Deterioration is often difficult and very costly to repair, with the cost of repair work usually greatly exceeding the original cost of the sealant joint work. 4.3 This guide is applicable to sealants with an established movement capacity, in particular elastomeric sealants that meet Specification C920 with a minimum movement capacity rating of ±12 1 / 2 %. In general, a sealant with less than ±12 1 / 2 % movement capacity can be used with the joint width sizing calculations; however, the width of a joint using such a sealant will generally become too large to be practically considered and installed. It is also applicable to precured sealant extrusions with an established movement capacity that meets Specification C1518 . 4.4 The intent of this guide is to describe some of the performance factors and tolerances that are normally considered in sealant joint design. Equations and sample calculations are provided to assist the user of this guide in determining the required width and depth for single and multi-component, liquid-applied sealants when installed in properly prepared joint openings. The user of this guide should be aware that the single largest factor contributing to non-performance of sealant joints that have been designed for movement is poor workmanship. This results in improper installation of sealant and sealant joint components. The success of the methodology described by this guide is predicated on achieving adequate workmanship. 4.5 Joints for new construction can be designed by the recommendations in this guide as well as joints that have reached the end of their service life and need routine maintenance or joints that require remedial work for a failure to perform. Guide C1193 should also be consulted when designing sealant joints. Failure to install a sealant and its components following its guidelines can and frequently will result in failure of a joint design. 4.6 Peer reviewed papers, published in various ASTM Special Technical Publications (STP), provide additional information and examples of sealant joint width calculations that expand on the information described in this guide ( 2- 5 ) . For cases in which the state of the art is such that criteria for a particular condition is not firmly established or there are numerous variables that require consideration, a reference section is provided for further consideration. 4.7 To assist the user of this guide in locating specific information, a detailed listing of guide numbered sections and their headings is included in Appendix X1 .