ASTM D7088-2004 Standard Practice for Resistance to Hydrostatic Pressure for Coatings Used in Below Grade Applications Applied to Masonry《砖石工程用地下设施涂层的抗流体静压力的标准规程》.pdf
《ASTM D7088-2004 Standard Practice for Resistance to Hydrostatic Pressure for Coatings Used in Below Grade Applications Applied to Masonry《砖石工程用地下设施涂层的抗流体静压力的标准规程》.pdf》由会员分享,可在线阅读,更多相关《ASTM D7088-2004 Standard Practice for Resistance to Hydrostatic Pressure for Coatings Used in Below Grade Applications Applied to Masonry《砖石工程用地下设施涂层的抗流体静压力的标准规程》.pdf(3页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D 7088 04Standard Practice forResistance to Hydrostatic Pressure for Coatings Used inBelow Grade Applications Applied to Masonry1This standard is issued under the fixed designation D 7088; the number immediately following the designation indicates the year oforiginal adoption or, in the
2、 case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 res
3、ist 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 theresponsibilit
4、y of the user of this standard to establish appro-priate safety and health practices and to determine theapplicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 714 Test Method for Evaluating Degree of Blistering ofPaintsD 1475 Test Method for Density of Liq
5、uid Coatings, Inks,and Related ProductsD 3924 Specification for Standard Environment for Condi-tioning and Testing Paint, Varnish, Lacquer, and RelatedMaterialsD 3925 Practice for Sampling Liquid Paints and RelatedPigmented Coatings2.2 U. S. Federal StandardsTT-P-1411A Paint, Copolymer-Resin, Cement
6、itious (forWaterproofing Concrete and Masonry Walls)33. 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 by 5 by 8 in.) with a n
7、ominalwall 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 to sit for seven days. A
8、ir 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 simulate the ability of
9、 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) consists of a series of bo
10、lts 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.(See Fig. 2.)5.2 The test
11、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 typically threeholes on each
12、side. In addition, the top plate should have a 2.5cm (1 in.) diameter hole in the center for insertion of the airsupply.5.2.2 Bolts (8),12by14 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
13、per square inch (psi)equipped with a pressure regulator to control the air pressurebeing applied to the block.1This 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 Masonry Tre
14、atments.Current edition approved Nov. 1, 2004. Published November 2004.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe AST
15、M website.3Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.2.4 Rubber Gaskets (2),20by20by0.5cm(8by8by14i
16、n.) 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),20by20by20cm(8by8by 8 in.) blocks with hollow cores with an inside openings(ce
17、ll) 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 Bristle Brush, for cleaning test substrates.6.3 Paint Brush,
18、polyester nylon for applying test coatings.6.4 Rubber Gasket,(14 in. thick) used to ensure a tight sealon the top and bottom of the coated block.6.5 Sealant, Epoxy or Other Adhesive, to ensure a tight sealof the gasket to the block.6.6 Food Dyes.7. Sampling7.1 Sampling of the coating shall be conduc
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