ASTM C887-2005 Standard Specification for Packaged Dry Combined Materials for Surface Bonding Mortar《路面砌合灰浆用成包的干混合材料的标准规范》.pdf

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1、Designation: C 887 05Standard Specification forPackaged, Dry, Combined Materials for SurfaceBonding Mortar1This standard is issued under the fixed designation C 887; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last

2、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 specification covers the materials, properties, andpackaging of dry, combined materials for use as surfacebonding mor

3、tar with concrete masonry units that have not beenprefaced, coated, or painted.1.2 This specification does not cover design or application.Consult the manufacturer for specific recommendations.1.3 Appendix X1 of this specification contains the recom-mended tests for evaluation of surface bonded maso

4、nry assem-blages used to establish design loads for the composite wall.1.4 Appendix X2 through Appendix X5 of this specificationcontain additional tests that may be performed on surfacebonding mortar.1.5 This standard does not purport to address all of thesafety concerns, if any, associated with its

5、 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. This hazardstatement applies only to Section 9 of this specification.1.6 The values stated in inch-pound units are

6、 to be regardedas the standard. The values given in parentheses are forinformation only.2. Referenced Documents2.1 ASTM Standards:2C91 Specification for Masonry CementC 109/C 109M Test Method for Compressive Strength ofHydraulic Cement Mortars (Using 2-in. or 50-mm CubeSpecimens)C 138 Test Method fo

7、r Density (Unit Weight), Yield, andAir Content (Gravimetric) of ConcreteC 144 Specification for Aggregate for Masonry MortarC 150 Specification for Portland CementC 187 Test Method for Normal Consistency of HydraulicCementC 191 Test Method for Time of Setting of Hydraulic Ce-ment by Vicat NeedleC 20

8、7 Specification for Hydrated Lime for Masonry Pur-posesC 260 Specification for Air-Entraining Admixtures for Con-creteC 305 Practice for Mechanical Mixing of Hydraulic CementPastes and Mortars of Plastic ConsistencyC 348 Test Method for Flexural Strength of HydraulicCement MortarsC 349 Test Method f

9、or Compressive Strength of HydraulicCement Mortars (Using Portions of Prisms Broken inFlexure)C 359 Test Method for Early Stiffening of Hydraulic Ce-ment (Mortar Method)C 494 Specification for Chemical Admixtures for ConcreteC 595/C 595M Specification for Blended Hydraulic Ce-mentsC 618 Specificatio

10、n for Fly Ash and Raw or CalcinedNatural Pozzolan for Use in ConcreteC 666/C 666M Test Method for Resistance of Concrete toRapid Freezing and ThawingC 1157 Performance Specification for Hydraulic CementE72 Test Methods of Conducting Strength Tests of Panelsfor Building ConstructionE96 Test Methods f

11、or Water Vapor Transmission of Mate-rialsE119 Test Methods for Fire Tests of Building Constructionand MaterialsE 447 Test Methods for Compressive Strength of MasonryPrisms3E 514 Test Method for Water Penetration and LeakageThrough MasonryE 518 Test Methods for Flexural Bond Strength of MasonryE 519

12、Test Method for Diagonal Tension (Shear) in Ma-sonry Assemblages1This specification is under the jurisdiction of ASTM Committee C12 onMortars and Grouts for Unit Masonry and is the direct responsibility of Subcom-mittee C12.06 on Surface Bonding.Current edition approved April 1, 2005. Published Apri

13、l 2005. Originallyapproved in 1979. Last previous edition approved in 2001 as C 887 99a (2001).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 Documen

14、t Summary page onthe ASTM website.3Withdrawn.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3. Terminology3.1 Definition:3.1.1 surface bonding mortara product containing hy-draulic cement, glass fiber reinforcement with or withoutin

15、organic fillers, or organic modifiers in a prepackaged formrequiring only the addition of water prior to application.4. Materials and Manufacture4.1 The materials used as ingredients in packaged, dry,combined materials for surface bonding mortar shall conformto the following requirements:4.1.1 Hydra

16、ulic CementsHydraulic cements used shallconform to the following ASTM specifications:4.1.1.1 Portland CementType I, IA, II, IIA, III, or IIIA ofSpecification C 150.4.1.1.2 Blended Hydraulic CementsType IS, ISA, IP, orIPA of Specification C 595.4.1.1.3 Hydraulic CementType GU, HE, MS, or MH ofSpecifi

17、cation C 1157.4.1.1.4 Masonry CementSpecification C91.4.1.2 Hydrated LimeType S or SAof Specification C 207.4.1.3 PozzolanClass N, F, or S of Specification C 618.4.1.4 AggregatesAggregates shall conform to Specifica-tion C 144 with the exception of grading. The maximumallowable particle size shall n

18、ot exceed one third of therecommended application thickness of the surface bondingmortar with uniform distribution of particle size.4.1.4.1 All aggregates shall be dried, without decomposi-tion, to a moisture content of less than 0.1 weight %, computedon material dried substantially to constant weig

19、ht at 221 to230F (105 to 110C).4.1.5 Glass FibersGlass fibers shall be chopped strandsof a minimum12-in. (13-mm) length to provide significantreinforcement in a cementitious matrix.4.1.5.1 Glass fibers for use in surface bonding mortar, thatwill be subjected to wetting, humid atmosphere, or contact

20、withmoist ground have the potential to react with the availablealkalies present in the portland-cement matrix, causing strengthreduction of the surface bonding mortar.4.1.5.2 The producer shall show evidence satisfactory to thepurchaser that glass composition, cement matrix, or both, havebeen design

21、ed to reduce significantly or eliminate this unfa-vorable reaction.4.1.6 AdditivesAdditives may be added as part of thepackaged, dry, combined materials for purposes such asplasticity, air entrainment, water repellency, set acceleration,chemical bonding, and coloring. See Specifications C 260 andC 4

22、94.4.1.6.1 Admixtures or mortar colors shall not be added tothe surface bonding mortars at the time of mixing unlessprovided for in the contract specifications, and, after thematerials are so added, the surface bonding mortars shallconform to the physical requirements prescribed in Table 1.4.1.6.2 A

23、ntifreeze CompoundsNo antifreeze liquid, salts,or other substances shall be used in surface bonding mortar tolower the freezing point.NOTE 1Calcium chloride, when provided for in the contract specifi-cations, and expressly recommended by the manufacturer, may be used asan accelerator in amounts not

24、exceeding12 % by weight of the total bagweight.5. Proportioning5.1 The proportions of materials such as hydraulic cements,aggregate, and glass fibers shall be such that the requirementsof Table 1 will be met when an amount of mixing water is usedthat is recommended by the manufacturer to produce a w

25、orkingconsistency or that produces a consistency penetration of 65 to75 mm by the Cone Penetrometer Test Method of Annex A2.6. Physical Requirements Physical Requirements6.1 Packaged, dry, combined materials for surface bondingmortar shall conform to requirements for physical propertiesprescribed in

26、 Table 1, when the prescribed amount of water isadded.7. Sampling and Testing7.1 Accuracy of Measurement:7.1.1 Weigh all surface bonding mortar on scales conform-ing to the applicable sections of National Institute of Standardsand Technology Handbook 44, “Specifications, Tolerances andRegulations fo

27、r Commercial Weighing and Measuring De-vices.”NOTE 2New and reconditioned scales shall be accurate to 60.1 % ofthe total capacity of the scale. When scales have been in use, they shall beaccurate to 60.4 % of the total capacity of the scale.7.1.2 Record all weights in pounds or kilograms to aminimum

28、 accuracy of 0.1 lb (0.05 kg). Record all weights ingrams to an accuracy of1gor0.1%,whichever is greater.8. Sampling Surface Bonding Mortar8.1 Use the contents of an entire package of surface bondingmortar as a sample. Weigh the package, then place it in a clean,watertight container. Open the packag

29、e by cutting it down oneside and across the top and bottom. Empty the contents of thepackage into the container then carefully remove and weigh theempty bag. Mix the contents thoroughly by hand, using a scoopTABLE 1 Physical RequirementsFlexural StrengthA(average of three prisms)The flexural strengt

30、h of prisms of surface bonding mortar prepared and testedin accordance with this specification shall be equal to or higher than thevalues specified for the ages indicated as follows:psi (MPa)1 day 450 3.17 days 700 4.828 days 800 5.5Compressive Strength (average of prisms broken in flexure)The compr

31、essive strength of modified cubes of surface bonding mortarprepared and tested in accordance with this specification shall be equal toor higher than the values specified for the ages indicated as follows:psi (MPa)1 day 1600 1128 days 3500 24.1Time of setting, Vicat needle, initial set,minimum, min 4

32、5final set, max, h 8Water retention flow after suction, min, % of originalflow, min75C887052or trowel, then secure a representative sample weighing notless than 9 lb (4 kg) nor more than 12 lb (5.4 kg). If the packagefrom which the sample is secured weighs 20 lb (9 kg) or more,reduce its contents to

33、 the required weight by quartering.9. Mixing and Testing Surface Bonding Mortar9.1 Mortar mixing equipment shall be as specified in Prac-tice C 305, except that the clearance adjustment bracket shallbe set for the largest size aggregate in the mix being tested. Themixing procedure shall be as given

34、in Annex A1.9.2 Determine the surface bonding mortar plastic and hard-ened properties using the following appended test methods:9.2.1 Annex A3Flexural Strength of Surface BondingMortar.9.2.2 Annex A4Compressive Strength of Surface Bond-ing Mortar.9.2.3 Annex A5Time of Setting of Surface BondingMorta

35、r.9.2.4 Annex A6Water Retention of Surface BondingMortar.9.3 Mix a representative portion of the sample of the dry,combined surface bonding mortar weighing 3000 6 3 g. Use aproportionate amount of the water recommended by themanufacturer to produce a working consistency or a sufficientamount of mixi

36、ng water to produce a cone penetration of 212to 3 in. (65 to 75 mm). Determine the consistency and weightof 400 mL of the mortar, in accordance with Annex A2, thenmold 1.575 by 1.575 by 6.3-in. (40 by 40 by 160-mm) prismsin the quantity necessary to test for the desired ages. Ifinsufficient mortar i

37、s available, make further batches of mortarsusing the same water to achieve the required consistency.9.3.1 Calculate the unit weight in pounds per cubic foot(kilograms per cubic metre) and yield in cubic feet (cubicmetres) or the yield in square feet per inch (square metres permillimetre) of thickne

38、ss, from the weight of the mortar in the400-mL measure used for the consistency test in Annex A2.9.3.2 Specimens for flexural strength shall be 1.575 by1.575 by 6.3-in. (40 by 40 by 160-mm) prisms molded, cured,and tested in accordance with Annex A3, with the brokenhalves of prisms tested in compres

39、sion as modified cubes inaccordance with Annex A4.9.3.3 Determine the time of setting by Vicat needles inaccordance with Annex A5.9.3.4 Determine the water retention in accordance withAnnex A6.9.4 The report of the tests shall include the following:9.4.1 Net weight of dry, combined material in the b

40、agdetermined to 0.1 lb (0.05 kg), by subtracting the weight of theempty bag from the gross weight of the package.9.4.2 Amount of mixing water, W, calculated in pounds(kilograms) per bag based on printed weight of the bag (Note3).9.4.3 Unit weight, U, in pounds per cubic foot (kilogramsper cubic metr

41、e) in accordance with Test Method C 138 (Note3).9.4.4 Yield, Y, of surface bonding mortar calculated fromthe unit weight in cubic feet (cubic metres) per bag, based onprinted weight of bag (Note 1).NOTE 3Calculate W, U, and Y as follows:W 5 RwB (1)U 5 0.156 WmY 5 1 1 Rw! B/Uwhere:Rw= ratio of weight

42、 of mixing water to weight of dry,combined material in batch of surface bondingmortar calculated to three decimal places,B = the printed bag weight, andWm= weight in grams of surface bonding mortar in the400-mL measure.9.4.5 Water retention in percent.9.4.6 Flexural Strength at ages specified in Tab

43、le 1.9.4.7 Compressive strength at ages specified in Table 1.9.4.8 Time of setting, initial and final in hours.10. Basis of Rejection10.1 The packaged, dry, combined surface bonding mortarmay be rejected if it fails to meet any of the requirements ofthis specification.10.2 Packages varying more than

44、 2 % from the weightprinted on the bag or produce a yield less than that printed onthe bag may be rejected, and if the average weight of packagesin any shipment as shown by weighing 50 packages taken atrandom is less than that printed on the bag, the entire shipmentmay be rejected.10.3 All broken pa

45、ckages may be rejected.11. Marking and Packaging11.1 All packages shall be identified as conforming toSpecification C 887 and the net weight in each bag printedthereon.11.2 All packages shall be marked appropriately with themanufacturers code or open date of production. All containersshall have a pr

46、ominently located CAUTION STATEMENT,warning of potential hazard to handlers of materials therein.11.3 The minimum yield in cubic feet (cubic metres) or theyield in square feet per inch (square metres per millimetre) ofthickness, and the amount of water recommended for mixingshall be marked on the pa

47、ckage.NOTE 4The amount of water recommended by the manufacturershould be the amount required to produce a working consistency undernormal 73.4F (23C) climatic conditions.11.4 Container ConstructionThe material from which thecontainers are made shall have water vapor transmission notgreater than 100

48、g/m2in 24 h as determined in accordance withProcedure B of Test Methods E96.12. Keywords12.1 dry stacked; fiber reinforced; mortar; packaged; sur-face bondingC887053ANNEXES(Mandatory Information)A1. LABORATORY MECHANICAL MIXING OF SURFACE BONDING MORTARA1.1 ScopeA1.1.1 This method covers the mechani

49、cal mixing of sur-face bonding mortars of plastic consistency.A1.2 ApparatusA1.2.1 The apparatus shall be in accordance with therequirements of Practice C 305.A1.3 Temperature and HumidityA1.3.1 The temperature of the room shall be maintainedbetween 68 and 81.5F (20 and 27.5C), and the temperature ofthe dry materials, paddle, and bowl shall be within the aboverange at the time of test. The temperature of the mixing watershall not vary from 73.4F (23C) by more than 63F (1.7C).A1.3.2 The relative humidity of the laboratory shall be notless than 50 %.