1、Designation: C1315 11Standard Specification forLiquid Membrane-Forming Compounds Having SpecialProperties for Curing and Sealing Concrete1This standard is issued under the fixed designation C1315; the number immediately following the designation indicates the year oforiginal adoption or, in the case
2、 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 provides requirements for membrane-forming liquids suitable for use as c
3、uring compounds andsealers on freshly placed concrete and as sealers on hardenedconcrete. These membranes have special properties, such as,alkali resistance, acid resistance, adhesion-promoting qualities,and resistance to degradation by UV light.NOTE 1For liquid membrane-forming curing compounds spe
4、cifiedprimarily by their ability to retain water in newly placed concrete (and bydrying time, and for white pigmented products, reflectance), see Specifi-cation C309.1.2 The values stated in SI units are to be regarded as thestandard. (Inch pound units are shown in parentheses).1.3 The following pre
5、cautionary caveat pertains only to thetest methods portion, Section 8, 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
6、and determine the applicability of regulatory limita-tions prior to use.1.4 This is a performance specification. The allowablecomposition of products covered by this specification is limitedby various local, regional, and national regulations. Issuesrelated to air quality (solvent emission), worker
7、exposure, andother hazards are not addressed here. It is the responsibility ofthe producers and users of these materials to comply withpertinent regulations.WarningSome VOC exempt solvents used to meet theregulations are extremely flammable with low auto ignitiontemperatures and rapid evaporation ra
8、tes. Consult the manu-facturers product information sheet for important applicationand safety information.2. Referenced Documents2.1 ASTM Standards:2C156 Test Method for Water Loss from a Mortar Speci-men Through Liquid Membrane-Forming Curing Com-pounds for ConcreteC309 Specification for Liquid Mem
9、brane-Forming Com-pounds for Curing ConcreteD869 Test Method for Evaluating Degree of Settling ofPaintD1308 Test Method for Effect of Household Chemicals onClear and Pigmented Organic FinishesD1309 Test Method for Settling Properties of Traffic PaintsDuring StorageD1544 Test Method for Color of Tran
10、sparent Liquids(Gardner Color Scale)D1734 Practice for Making Cementitious Panels for TestingCoatingsD2369 Test Method for Volatile Content of CoatingsD2371 Test Method for Pigment Content of Solvent-Reducible PaintsD3723 Test Method for Pigment Content of Water-Emulsion Paints by Low-Temperature As
11、hingD4541 Test Method for Pull-Off Strength of Coatings UsingPortable Adhesion TestersE1347 Test Method for Color and Color-Difference Mea-surement by Tristimulus ColorimetryG154 Practice for Operating Fluorescent Light Apparatusfor UV Exposure of Nonmetallic Materials2.2 Other Standard:1This specif
12、ication is under the jurisdiction of ASTM Committee C09 onConcrete and Concrete Aggregates and is the direct responsibility of SubcommitteeC09.22 on Materials Applied to New Concrete Surfaces.Current edition approved June 1, 2011. Published June 2011. Originallyapproved in 1995. Last previous editio
13、n approved in 2008 as C131508. DOI:10.1520/C1315-11.2For 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.1*A Summa
14、ry of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.ANSI A136.11992 Type I Organic Adhesives for Installa-tion of Ceramic Tile33. Classification3.1 The following types of liquid me
15、mbrane-forming com-pounds are included:3.1.1 Type IClear or translucent, and3.1.2 Type IIWhite pigmented.3.2 The curing compound shall conform to one of thefollowing classes:3.2.1 Class A curing compounds conform to the require-ments of 6.4.1, and are essentially non-yellowing,3.2.2 Class B curing c
16、ompounds conform to the require-ments of 6.4.2, where moderate yellowing is not prohibited,and3.2.3 Class C curing compounds are not restricted withregard to yellowing or darkening, and are for use where thecolor changes are acceptable.NOTE 2Polymer materials known to satisfy the durability require-
17、ments of this document include, but are not limited to, chlorinated rubbers,styrene-acrylate and styrene-butadiene copolymers. These polymers havedemonstrated their durability by their ability to adhere to concrete and notbe affected by the alkalies from cement.NOTE 3Pigmented colors other than whit
18、e, or other special attributes,are beyond the scope of this specification and are subject to negotiationbetween the purchaser and the supplier.4. Ordering Information4.1 The purchaser shall include the following information inthe purchase order when applicable:4.1.1 Type and class of liquid membrane
19、-forming com-pound to be furnished,4.1.2 Rate of application to be used to determine confor-mance to this specification,4.1.2.1 For Type I compounds if not specified, the liquidmembrane-forming material shall be applied by uniform spray-ing at a rate of 7.4 m2/L (300 ft2/gal) for testing purposes.4.
20、1.2.2 For Type II compounds, if not specified, the liquidmembrane-forming material shall be applied by uniform spray-ing at a rate of 5.0 m2/L (200 ft2/gal) for testing purposes.NOTE 4The application rate used for testing may or may not be thesame as the rate used for field application. Many agencie
21、s use the samerate for field application on relatively smooth surfaces as the rate used fortesting, while requiring a substantially greater application rate on deeplytextured surfaces.4.1.3 The intended method of application (for example:spraying, brushing, or by roller). If not specified, materials
22、shall be of a sprayable consistency.5. General Requirements5.1 Type I liquid membrane-forming compound shall beclear or translucent and have a minimum of 25 % solids bymass when tested in accordance with 8.5.5.2 Type II liquid membrane-forming compound shall con-sist of finely divided white pigment
23、and vehicle integrallyready mixed for immediate use as is and have a minimum of25 % vehicle solids by mass when tested in accordance with8.6. The membrane-forming compound shall present a uniformwhite appearance when applied uniformly to a new concretesurface at the specified rate of application.NOT
24、E 5Although this is a performance specification, a minimumvehicle solids content is specified in order to provide an approximately0.025 mm (1 mil) thick dry film at the specified rate of application. Thisfilm thickness is considered necessary to achieve the desired characteris-tics.5.3 Liquid membra
25、ne-forming compounds shall be of sucha consistency that they can be readily applied by spraying, orby brushing or rolling, to form a uniform coating at tempera-tures above 4 C (40 F).NOTE 6For uniform application in the field on vertical concretesurfaces, the specified rate of application may be ach
26、ieved by two coats,each applied at one half the normal rate with approximately 1 h dryingtime between coats or in accordance with manufacturers recommenda-tions.5.4 Liquid membrane-forming compounds shall adhere tofreshly-placed concrete that has stiffened or set sufficiently toresist marring during
27、 application. Liquid membrane-formingcompounds shall also adhere to damp or dry, hardened concretesurfaces. In every case, the compound shall form a continuousfilm after application at the specified rate.5.5 Liquid membrane-forming compounds shall not reactdeleteriously with concrete. Deleterious re
28、actions are detectedby scratching the surface of a mortar specimen used for thewater-retention test with a knife or screwdriver, not less than72 h after application, and comparing with the surface hardnesssimilarly determined on a similar specimen that has been moistcured for one half the time.Any s
29、oftening of the treated surfaceshall be considered sufficient cause for rejection of the com-pound.5.5.1 Testing for deleterious reactions is not needed on aroutine basis. However, it must be done when testing com-pounds of a new or unknown composition.5.6 Liquid membrane-forming compounds shall be
30、storablefor at least 6 months without deterioration. Compounds of thewater emulsion type shall not be exposed to freezing. Type IIliquid membrane-forming compounds shall be capable of beingmixed to a uniform consistency by stirring or agitation. Whentested for long term settling, as is stated in 8.4
31、, the compoundshall have a rating of not less than 4.6. Specific Characteristics6.1 Water LossLiquid membrane-forming compounds,when tested in accordance with 8.1 shall restrict the loss ofwater to not more than 0.40 kg/m2in 72 h.6.2 ReflectanceType II liquid membrane-forming com-pounds, when tested
32、 in accordance with 8.2 shall exhibit adaylight reflectance of not less than 65 %. Reflectance proper-ties are only for white pigmented materials.6.3 Drying TimeLiquid membrane-forming compounds,when tested in accordance with 8.3 shall dry to touch in notmore than 4 h.6.4 Ultraviolet Light (UV) Degr
33、adation-Yellowing Whentested in accordance with 8.7.6, compounds shall be durable3American National Standard Specifications for the Installation of Ceramic Tile,1992, Tile Council of America, P.O. Box 1787, Clemson, SC 29633-1787.C1315 112and remain as a complete film, free of blisters, peeling, orf
34、laking on the surface of the mortar panel.6.4.1 Class A Type I or Type II compounds shall have acolor equal to or lighter than Gardner Color Standard No. 1when tested in accordance with 8.7.6.6.4.2 Class B Type I or Type II compounds shall have acolor equal to or lighter than Gardner Color Standard
35、No. 3when tested in accordance with 8.7.6.6.4.3 Class C shall not be tested for yellowing.6.5 Acid and Alkali Resistance:6.5.1 The cured membrane, when tested in accordance with8.7.7 for 48 h, shall not pin-hole, blister or disintegrate.6.6 AdhesionThis requirement is to assure that the prod-uct bei
36、ng specified does not reduce the bonding effectivenessof adhesives commonly used to adhere flooring materials suchas ceramic tile, resilient tile, wood flooring and carpet toconcrete.6.6.1 When tested in accordance with 8.8, surfaces coatedwith the membrane-forming compound shall pass the perfor-man
37、ce requirement of 8.8.5.7. Sampling7.1 Samples shall be taken either at the plant or warehouseprior to delivery, or at the point of delivery, at the option of thepurchaser. If sampling is done prior to shipment, the inspectorrepresenting the purchaser shall have free access to thematerials being sam
38、pled and shall be afforded all reasonablefacilities for inspection and sampling.7.2 Thoroughly shake or stir liquid membrane-formingcompounds before taking a sample. Take one sample for eachlot, batch, or other unit of production in a shipment. If theliquid membrane-forming compound is in mixing tan
39、ks or vats,one third of the sample shall represent the material comingfrom the tank at the beginning of the filling operation, one thirdshall represent the material coming at the middle of the fillingoperation, and one third shall represent the material coming atthe end of the filling operation. If
40、the liquid membrane-formingcompound to be sampled is in containers, obtain a sample bytaking a portion out of a number of containers equal in numberto the next integer larger than the cube root of the total numberof containers in the lot.7.3 Seal all of the filled containers represented by thesample
41、 to prevent leakage, substitution or dilution. The sam-pling agency shall mark each container represented by thesample with a suitable identification mark for later identifica-tion and correlation.8. Test Methods8.1 Water Loss TestPerform as per Test Method C156.Unless otherwise specified by the man
42、ufacturer, use an appli-cation rate of 7.4 m2/L (300 ft2/gal) for Type I compounds and5.0 m2/L (200 ft2/gal) for Type II compounds.8.2 Reflectance TestUsing Test Method E1347, determinethe daylight reflectance of Type II membrane-forming com-pound on a mortar specimen after completion of the waterre
43、tention test.8.3 Drying Time Test:8.3.1 ScopeThis test method is used to determine thelength of time for a liquid membrane-forming curing com-pound to dry to the touch.8.3.2 Significance and UseThe ability of a liquidmembrane-forming compound to dry in a suitable length oftime enables the user the a
44、bility to perform other tasks on theconcrete, such as sawing joints, and the like without lifting themembrane from the concrete by tracking.8.3.3 ProcedureApply the membrane-forming compoundto a fresh mortar specimen at the specified rate of applicationand expose it to air at 23 6 2C(736 4 F), 50 6
45、10 %relative humidity and at an air velocity of approximately 180m/min (600 ft/min) horizontally across the surface of the testspecimen. Test the film with a finger using moderate pressure.Consider the film to be dry when the soft tacky condition nolonger exists and the film feels firm.8.3.4 Precisi
46、on and BiasThe precision of the procedurefor measuring the drying time of liquid membrane-formingcompounds is being determined. The test method has no biasbecause there is not any acceptable reference material.8.4 Long Term Settling TestUse Test Method D1309 forroutine testing. In the case of disput
47、e, use Test Method D869.8.5 Solids Test (Type I)Test in accordance with TestMethod D2369.8.6 Vehicle Solids Test (Type II) Determine total nonvola-tile content in accordance with Test Method D2369, andpigment solids in accordance with Test Method D2371 forsolvent-borne products or Test Method D3723
48、for water-borneproducts. Calculate percent vehicle solids as percent totalsolids minus percent pigment solids.NOTE 7This procedure is not satisfactory for water-borne productscontaining organic colorants or filler, or pigments which dehydrate ordecompose below 230 C (450 F).8.7 UV Degradation, Yello
49、wing, Acid, and Alkali Resis-tance:8.7.1 ScopeThis procedure is used to evaluate the resis-tance of the membrane to the effects of UV radiation, acid, andalkali.8.7.2 Significance and UseCuring membranes are ex-posed to water and alkali in concrete and frequently aresubjected to ultraviolet light, any or all of which can degradesome polymers. These tests are used to evaluate durablemembranes. Polymers used in formulations to comply withthese requirements are alkali and acid resistant and adhere wellto concrete surfaces. As such, they are suitable
