ASTM C926-2018 Standard Specification for Application of Portland Cement-Based Plaster《硅酸盐水泥基灰浆应用的标准规格》.pdf
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1、Designation: C926 17C926 18Standard Specification forApplication of Portland Cement-Based Plaster1This standard is issued under the fixed designation C926; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers the requirements for the application of full thickness portland cement-based plaster for exterior(stucco)
3、and interior work. These requirements do not by default define a unit of work or assign responsibility for contractualpurposes, which is the purview of a contract or contracts made between contracting entities.1.2 This specification sets forth tables for proportioning of various plaster mixes and pl
4、aster thickness.NOTE 1General information will be found in Annex A1. Design considerations will be found in Annex A2.1.3 The values stated in inch-pound units are to be regarded as the standard. The SI (metric) values given in parentheses areapproximate and are provided for information purposes only
5、.1.4 The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes(excluding those in tables and figures) shall not be considered as requirements of the specification.1.5 Details of construction for a specific assembly to achieve the requi
6、red fire resistance shall be obtained from reports offire-resistance tests, engineering evaluations, or listings from recognized fire testing laboratories.1.6 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decis
7、ion on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C11 Terminology Relating to Gypsum and Related Building Materials and SystemsC25 T
8、est Methods for Chemical Analysis of Limestone, Quicklime, and Hydrated LimeC35 Specification for Inorganic Aggregates for Use in Gypsum PlasterC91 Specification for Masonry CementC150 Specification for Portland CementC206 Specification for Finishing Hydrated LimeC207 Specification for Hydrated Lime
9、 for Masonry PurposesC219 Terminology Relating to Hydraulic CementC260 Specification for Air-Entraining Admixtures for ConcreteC578 Specification for Rigid, Cellular Polystyrene Thermal InsulationC595 Specification for Blended Hydraulic CementsC631 Specification for Bonding Compounds for Interior Gy
10、psum PlasteringC897 Specification for Aggregate for Job-Mixed Portland Cement-Based PlastersC932 Specification for Surface-Applied Bonding Compounds for Exterior PlasteringC1063 Specification for Installation of Lathing and Furring to Receive Interior and Exterior Portland Cement-Based PlasterC1116
11、Specification for Fiber-Reinforced Concrete and ShotcreteC1328 Specification for Plastic (Stucco) Cement1 This specification is under the jurisdiction of ASTM Committee C11 on Gypsum and Related Building Materials and Systems and is the direct responsibility ofSubcommittee C11.03 on Specifications f
12、or the Application of Gypsum and Other Products in Assemblies.Current edition approved Jan. 1, 2017Jan. 1, 2018. Published January 2017January 2018. Originally approved in 1981. Last previous edition approved in 20162017 asC926 16c.C926 17. DOI: 10.1520/C0926-17.10.1520/C0926-18.2 For referencedASTM
13、 standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of
14、 an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as pub
15、lished by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1C1787 Specification for Installation of Non Metallic Plaster Bas
16、es (Lath) Used with Portland Cement Based Plaster in VerticalWall ApplicationsE90 Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and ElementsE119 Test Methods for Fire Tests of Building Construction and MaterialsE492 Test Method for Laboratory Measu
17、rement of Impact Sound Transmission Through Floor-Ceiling Assemblies Using theTapping Machine2.2 ANSI Standard:A108.1 Specification for Installation of Ceramic Tile33. Terminology3.1 Terms shall be defined as in Terminologies C11 and C219, except as modified herein.3.2 Definitions of Terms Specific
18、to This Standard:3.2.1 accelerator, nan admixture that will shorten the setting time of plaster.3.2.2 admixture, na material other than water, aggregate, or basic cementitious material added to the batch before or duringjob mixing.3.2.3 acid etching, nthe cleansing and controlled erosion of a solid
19、surface, using an acid wash.3.2.4 air entrainment, nthe use of an air-entraining admixture or air-entraining cementitious material in a plaster mix to yielda controlled quantity of minute (typically between 10 and 1000 m in diameter) disconnected air bubbles in the plaster (seeentrapped air).3.2.5 b
20、ack wrap, na means of terminating a polymer-modified, fabric reinforced cementitious base coat by wrapping thereinforcing mesh, which has been affixed to the substrate onto the outboard surface of the foam plastic core to provide continuityof the reinforced base coat and protection for the foam plas
21、tic core.3.2.6 backplaster, nplaster applied to the face of metal lath opposite a previously applied plaster.3.2.7 barrier wall, ntype of wall system that is intended to block or interrupt the movement of water to the interior.3.2.8 bond, nthe state of adhesion between plaster coats or between plast
22、er and plaster base.3.2.9 bonding compound or agent, ncompounds surface applied or integrally mixed with plaster to improve the quality ofbond between plaster and plaster base or between plaster coats.3.2.10 cementitious material, na material that, when mixed with water and with or without aggregate
23、, provides the plasticityand the cohesive and adhesive properties necessary for placement and the formation of a rigid mass.3.2.11 coat, na thickness of plaster applied in a single operation.3.2.11.1 basecoat, nall plaster applied before the application of the finish coat.3.2.11.2 bedding coat, na p
24、laster coat that receives aggregate or other decorative material impinged into its surface before itsets.3.2.11.3 brown coat, nin three-coat work, the second coat, applied over the scratch coat. In two-coat work, brown coat refersto the double-up basecoat. In either use, the brown coat is the coat d
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