ASTM_C_905_-_01_2012.pdf

Designation:C90501(Reapproved 2012)Standard Test Methods forApparent Density of Chemical-Resistant Mortars,Grouts,Monolithic Surfacings,and Polymer Concretes1This standard is issued under the fixed designation C905;the number immediately following the designation indicates the year oforiginal adoption or,in the case 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 These test methods cover the procedures for determin-ing the uncured(wet)and conditioned(dry)densities of resin,silicate,silica,and sulfur-based chemical-resistant mortars,grouts,monolithic surfacings,and polymer concretes.1.2 Mold Method A outlines the molding procedure gener-ally used for systems containing aggregate less than 0.2 in.(5mm)in size.Mold Method B covers the molding proceduregenerally used for systems containing aggregate from 0.2 to 0.4in.(10 mm)in size.Mold Method C is for systems containingaggregate larger than 0.4 in.1.3 Density Method I:Apparent Uncured Density of Resin,Silica,and Silicate MaterialsThis test method is not appli-cable to sulfur materials.1.4 Density Method II:Apparent Conditioned Density ofResin and Sulfur-based MaterialsThis test method may beapplicable to silica or silicate materials if they are not water-sensitive.1.5 Density Method III:Apparent Conditioned Density ofSilica and Silicate Materials that are Water Sensitive.1.6 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.7 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C470/C470M Specification for Molds for Forming ConcreteTest Cylinders VerticallyC904 Terminology Relating to Chemical-Resistant Nonme-tallic MaterialsC1312 Practice for Making and Conditioning Chemical-Resistant Sulfur Polymer Cement Concrete Test Speci-mens in the Laboratory3.Terminology3.1 DefinitionsFor definitions of terms used in these testmethods,see Terminology C904.4.Significance and Use4.1 The results obtained by these test methods may be usedfor estimating purposes,as a means of checking on uniformityof a product,or even to help identify a specific product.5.Apparatus5.1 Balance for Determining Density,capable of weighingthe specimen to four significant numbers.The balance shall beequipped with either a below-balance weighing hook or a“panstraddle”or similar support plus wire assembly basket or loopto allow for density determinations.5.2 Equipment for Mixing Resin,Silica,and SilicateMaterialsUse a flat-bottom container of suitable size,pref-erably made of corrosion-resistant metal or porcelain,and atrowel having a 4 to 5 in.(100 to 125 mm)blade.5.2.1 Equipment for Mixing Sulfur MaterialsUse a stain-less steel or cast iron pot for melting the material along with apower-driven revolving paddle mixer.1These test methods are under the jurisdiction of ASTM Committee C03 onChemical-Resistant Nonmetallic Materialsand are the direct responsibility ofSubcommittee C03.01 on Mortars and Carbon Brick.Current edition approved Aug.1,2012.Published September 2012.Originallyapproved in 1979.Last previous edition approved in 2006 as C905 01(2006).DOI:10.1520/C0905-01R12.2For 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 ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.3 Specimen Molds:5.3.1 Mold Method A These molds shall be right cylinders1 6132in.(25 6 0.8 mm)in diameter by 1 6 in.high.5.3.1.1 The molds may be constructed in any manner thatwill allow formation of a test specimen of the desired size.Typical molds may consist of a 1-in.(25-mm)thick plasticsheet in which 1in.diameter,smooth-sided holes have beencut,and the bottom being a14-in.(6-mm)thick,flat plasticsheet which can be attached by means of screws or bolts.5.3.1.2 The molds may consist of sections of round plastictubing or pipe,1 in.inside diameter and 1 in.long,havingsufficient wall thickness to be rigid and retain dimensionalstability during the molding operation,and a14-in.thick,flatplastic sheet on which one open end of each section can berested.The tubing segment may be sealed with a material suchas caulking compound or stopcock grease.For most materials,it is satisfactory to simply seal one end of the tubing segmentwith strips of 2-in.(51-mm)wide masking tape.NOTE1For use with sulfur mortars,an additional piece