ASTM D7088-2017 8125 Standard Practice for Resistance to Hydrostatic Pressure for Coatings Used in Below Grade Applications Applied to Masonry《适用于砌体的地下应用使用涂层抗静水压力的标准实施规程》.pdf
《ASTM D7088-2017 8125 Standard Practice for Resistance to Hydrostatic Pressure for Coatings Used in Below Grade Applications Applied to Masonry《适用于砌体的地下应用使用涂层抗静水压力的标准实施规程》.pdf》由会员分享,可在线阅读,更多相关《ASTM D7088-2017 8125 Standard Practice for Resistance to Hydrostatic Pressure for Coatings Used in Below Grade Applications Applied to Masonry《适用于砌体的地下应用使用涂层抗静水压力的标准实施规程》.pdf(3页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D7088 17Standard Practice forResistance to Hydrostatic Pressure for Coatings Used inBelow Grade Applications Applied to Masonry1This standard is issued under the fixed designation D7088; the number immediately following the designation indicates the year oforiginal adoption or, in the c
2、ase of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice is for the evaluation of coatings used inbelow grade applications to resist
3、 the passage of water throughconcrete block.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility o
4、f the user of this standard to establish appro-priate safety and health practices and to determine theapplicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the De
5、cision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D714 Test Method for Evaluating Degree of Blistering ofPaintsD1475 Test Method
6、For Density of Liquid Coatings, Inks,and Related ProductsD3924 Specification for Environment for Conditioning andTesting Paint, Varnish, Lacquer, and Related Materials(Withdrawn 2016)3D3925 Practice for Sampling Liquid Paints and RelatedPigmented Coatings2.2 U. S. Federal StandardsTT-P-1411A Paint,
7、Copolymer-Resin, Cementitious (forWaterproofing Concrete and Masonry Walls)43. Summary of Practice3.1 Commercially available concrete blocks or concretemasonry units, typically 20 by 20 by 20 cm (8 by 8 by 8 in.)in outside dimensions with a hollow inside area (cell) of anominal 10 by 13 by 20 cm (4
8、by 5 by 8 in.) with a nominalwall thickness of 4 cm (112 in.) are coated on all four faceswith the test paint and allowed to cure. Rubber gaskets aresealed to the top and bottom of the test blocks typically with anepoxy or sealant. Water is then used to fill each coated testblock. They are allowed t
9、o sit for seven days. Air pressure isthen introduced and the face of the blocks is evaluated for thesize and frequency of water droplets on the face of the coating,any blistering, loss of adhesion, softening, discoloration orother film irregularities.4. Significance and Use4.1 This test is meant to
10、simulate the ability of a coatingapplied to a basement or other below grade masonry walls toprevent the intrusion of water through the coating caused byhydrostatic pressure from water on the outside of the structure.5. Apparatus5.1 The metal frame test apparatus used in this practice (SeeFig. 1) con
11、sists of a series of bolts and wing nuts used forclamping the plate tightly against the gasket and the test block.The top metal plate has an opening in the center into which apipe cap is drilled and tapped to receive an air supply from acompressor tank or hand pump to increase in inside pressure.(Se
12、e Fig. 2.)5.2 The test apparatus typically consists of the following:5.2.1 Galvanized Steel Top and Bottom Plates, measuring28 by 28 by 0.3 cm (11 by 11 by18 in.), each with14 in. holesdrilled along the outer edges of the plates for insertion ofscrews and bolts to secure the blocks. There are typica
13、lly three1This practice is under the jurisdiction of ASTM Committee D01 on Paint andRelated Coatings, Materials, and Applications and is the direct responsibility ofSubcommittee D01.47 on Concrete, Stone and Masonry Treatments.Current edition approved June 1, 2017. Published July 2017. Originally ap
14、provedin 2004. Last previous edition approved in 2008 as D7088 08 which waswithdrawn January 2017 and reinstated in June 2017. DOI: 10.1520/D7088-17.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStanda
15、rds volume information, refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from U.S. Government Printing Office Superintendent of Documents,732 N. Capitol St., NW, Mail Stop: SDE, Washington,
16、DC 20401, http:/www.access.gpo.gov.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Pri
17、nciples for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1holes on each side. In addition, the top plate should have a 2.5cm (1 in.) diameter hole in the center for insertion of the airsupply.
18、5.2.2 Bolts (8), 12 by14 in. with accompanying washers andwing nut screws to secure each block.5.2.3 Air Compressor, capable of pressurizing the testblocks to approximately 4 pounds per square inch (psi)equipped with a pressure regulator to control the air pressurebeing applied to the block.5.2.4 Ru
19、bber Gaskets (2), 20 by 20 by 0.5 cm (8 by 8 by14in.) to be placed on top and bottom of the test block. Thegaskets to be used for the top of the block should have anopening to assure that air pressure can be applied.6. Reagents and Materials6.1 Concrete Masonry Units (3), 20 by 20 by 20 cm (8 by 8by
20、 8 in.) blocks with hollow cores with an inside openings(cell) typically 10 by 13 by 20 cm (4 by 5 by 8 in.) in size andwalls approximately 4 cm (112 in.) thick. These blocks aretypical of the masonry units used in construction and may beobtained from commercial masonry supply companies.6.2 Stiff Br
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