ASTM_C_1438_-_13.pdf

Designation:C143813Standard Specification forLatex and Powder Polymer Modifiers for use in HydraulicCement Concrete and Mortar1This standard is issued under the fixed designation C1438;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.Scope*1.1 This specification covers performance criteria for latexand powder polymers when used as modifiers in hydrauliccement concrete and mortar to improve adhesion and reducepermeability(see Note 1).NOTE1For further information concerning theory,benefits,limitations,and applications of polymer-modified hydraulic cementitiousmixtures,refer to ACI 548.3R-09.21.2 The performance criteria are based on certain propertychanges that are achieved by use of the polymer modifier whencompared to reference concrete or mortar(Test MethodsC1439).1.3 Prepackaged,proprietary mortar products are not in-cluded in this specification.Also,this specification covers onlythose materials contained in the reference or test mixtureslisted in Test Methods C1439.1.4 The values stated in SI units are to be regarded asstandard.1.5 The following precautionary statement pertains only tothe test method portion,Section 10,of this specification:Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standards:3C125 Terminology Relating to Concrete and Concrete Ag-gregatesC494/C494M Specification for Chemical Admixtures forConcreteC1439 Test Methods for Evaluating Latex and PowderPolymer Modifiers for use in Hydraulic Cement Concreteand Mortar3.Terminology3.1 Definitions of Terms Specific to This StandardTermsused in this specification are defined in Terminology C125 or inthis section.3.1.1 latex,na dispersion of organic polymer particles inwater.3.1.2 polymer-modified concrete or mortar,na hydrauliccement concrete or mortar containing a polymer modifier.3.1.3 polymer modifier,nlatex or redispersible powderformulated for use with hydraulic cements.3.1.4 redispersible powder,npowder that redisperses inwater to form a latex.3.1.5 reference concrete or mortar,nconcrete or mortarhaving the amounts of cement and aggregates given in TestMethods C1439 and having an amount of water to achieve thespecified slump or flow.3.1.6 test concrete or mortar,nconcrete or mortar contain-ing a polymer modifier and having the same composition(except for water content)and slump or flow as the referenceconcrete or mortar.4.Classification4.1 Polymer modifiers are classified into two product types:4.1.1 Type IFor use in areas not exposed to moisture.4.1.2 Type IIFor general use.5.Ordering Information5.1 The purchaser shall specify the type of polymer modifierdesired and the size and type of containers in which thematerial is to be supplied.6.Physical and Mechanical Properties6.1 The polymer modifier shall produce test mortar or testconcrete which conforms to the requirements listed in Table 1for the type specified.1This specification is under the jurisdiction of ASTM Committee C09 onConcrete and Concrete Aggregatesand is the direct responsibility of SubcommitteeC09.44 on Polymer-Modified Concrete and Mortars.Current edition approved Nov.15,2013.Published December 2013.Originallyapproved in 1999.Last previous edition approved in 2011 as C143811a.DOI:10.1520/C1438-13.2ACI 548.3R-09 Report on Polymer-Modified Concrete.Available from Ameri-can Concrete Institute(ACI),P.O.Box 9094,Farmington Hills,MI 48333-9094,http:/www.concrete.org.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.Lot Uniformity and Equivalence7.1 When specified by the purchaser,the uniformity of a lot,or the equivalence of different lots from the same source shallbe established by evaluation following Specification C494/C494M,with the following exception:7.1.1 Residue by Oven DryingWithin a range not greaterthan 2 percentage points of the initial sample.8.Storage8.1 The supplier shall store the polymer modifier in such amanner as to permit easy access for proper inspection andidentification of each shipment,in a suitable building that willprotect the polymer modifier from dampness and freezing,andin accordance with manufacturers recommendations.9.Sampling and Inspection9.1 The supplier shall provide facilities for proper sampli