ASTM_C_884_-_C_884M_-_16.pdf

Designation:C884/C884M16Standard Test Method forThermal Compatibility Between Concrete and an Epoxy-Resin Overlay1This standard is issued under the fixed designation C884/C884M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This test method covers the determination of whichepoxy-resin formulations are subject to debonding when usedas overlays for concrete when the combination of the two issubjected to temperature changes that may be met in the field.1.2 UnitsThe values stated in either SI units or inch-pound units are to be regarded separately as standard.Thevalues stated in each system may not be exact equivalents;therefore,each system shall be used independently of the other.Combining values from the two systems may result in non-conformance with the specification.1.3 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.A specific hazardstatement is given in Section 8.(WarningFresh hydrauliccementitious mixtures are caustic and may cause chemicalburns to exposed skin and tissue upon prolonged exposure.)22.Referenced Documents2.1 ASTM Standards:3C33/C33M Specification for Concrete AggregatesC125 Terminology Relating to Concrete and Concrete Ag-gregatesC150/C150M Specification for Portland CementC260/C260M Specification for Air-Entraining Admixturesfor ConcreteC672/C672M Test Method for Scaling Resistance of Con-crete Surfaces Exposed to Deicing ChemicalsC778 Specification for Standard SandC881/C881M Specification for Epoxy-Resin-Base BondingSystems for Concrete3.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this test method,referto Terminology C125.4.Summary of Test Method4.1 A layer of epoxy-sand mortar is applied to a slab ofdried concrete.After the epoxy has cured,the sample issubjected to five cycles of temperature change between 23C73.5F and 21C 6F.Cracks near the bond line betweenthe concrete and the epoxy mortar constitute failure of the test.5.Significance and Use5.1 This test method applies to materials used in makingepoxy-mortar overlays for concrete pavement.If debondingoccurs between the overlay and the pavement,the material isunsuitable.5.2 This test method evaluates the ability of an overlay toremain bonded to a concrete substrate during repeated thermalcycling in air over a significant temperature range and is notintended to duplicate temperature fluctuations in the field.6.Apparatus6.1 Molds,in conformance with Test Method C672/C672M.6.2 Freezer,in conformance with Test Method C672/C672M,except that the temperature of the freezer shall be 216 2C 6 6 3F.6.3 Retaining strips,to retain the epoxy-mortar overlay.Pieces of wood or steel that can be attached to the 300 by 300by 75 mm 12 by 12 by 3-in.concrete block so as to enclosecompletely the top surface of the block and rise above it auniform distance of 15 mm 0.5 in.7.Materials7.1 Portland Cement,Type I or Type II,meeting therequirements of Specification C150/C150M.1This test method is under the jurisdiction of ASTM Committee C09 onConcrete and Concrete Aggregatesand is the direct responsibility of SubcommitteeC09.25 on Organic Materials for Bonding.Current edition approved July 1,2016.Published August 2016.Originallyapproved in 1978.Last previous edition approved in 2010 as C884/C884M98(2010).DOI:10.1520/C0884_C0884M-16.2See Section on Safety Precautions,Manual of Aggregate and Concrete Testing,Annual Book of ASTM Standards,Vol.04.02.3For 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.*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 States1 7.2 Standard Sand,meeting the requirements of Specifica-tion C778.7.3 AggregatesFine and coarse aggregate meeting therequirements of Specification C33/C33M.The coarse aggre-gate shall be durable under freezing exposure and shall have amaximum size of 25 mm 1 in.The fine aggregate shall be anatural sand.7.4 Air-Entraining Admixture,meeting the requirements ofSpecification C260/C260M.8.Hazards8.1 WarningEpoxy resins contain irritants,especially tothe skin,eyes,and respiratory system.Persons handling thesematerials shall use appropriate protective clothing,includingrubber or plastic gloves.If an epoxy resin should contact theskin,it sha