1、Designation:C132805 Designation: C1328/C1328M 12Standard Specification forPlastic (Stucco) Cement1This standard is issued under the fixed designation C1328/C1328M; the number immediately following the designation indicates theyear of original adoption or, in the case of revision, the year of last re
2、vision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers two types of plastic cement for use in portland cement-based plasters for exterior (stucco) andinte
3、rior application.1.2The values stated in SI units are to be regarded as the standard. Values in SI units shall be obtained by measurement in SIunits or by appropriate conversion, using the Rules for Conversion and Rounding given in1.2 UnitsThe values stated in either SI units or inch-pound units are
4、 to be regarded separately as standard. The values statedin each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining valuesfrom the two systems may result in non-conformance with the standard. Values in SI units shall be obtained by measure
5、ment inSI units or by appropriate conversion, using the Rules for Conversion and Rounding given in Standard IEEE/ASTM SI 10, ofmeasurements made in other units. , of measurements made in other units. Values are stated in only SI units when inch-pound unitsare not used in practice.1.3 The text of thi
6、s standard refers to notes and footnotes that provide explanatory material. These notes and footnotes(excluding those in tables and figures) shall not be considered as requirements of the standard.1.4 The following safety hazards caveat pertains only to Sections 14 and 15. This standard does not pur
7、port to address all ofthe safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safetyand health practices and determine the applicability of regulatory limitations prior to use. (Warning Fresh hydrauliccementitious mixtures
8、are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.)22. Referenced Documents2.1 ASTM Standards:3C109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or 50-mm Cube Specimens)C151 Test Method for Autoclave Expansion of Hydraulic Ceme
9、ntC183 Practice for Sampling and the Amount of Testing of Hydraulic CementC185 Test Method for Air Content of Hydraulic Cement MortarC187 Test Method for Amount of Water Required for Normal Consistency of Hydraulic Cement PasteC188 Test Method for Density of Hydraulic CementC219 Terminology Relating
10、 to Hydraulic CementC266 Test Method for Time of Setting of Hydraulic-Cement Paste by Gillmore NeedlesC305 Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic ConsistencyC430 Test Method for Fineness of Hydraulic Cement by the 45-m (No. 325) SieveC511 Specification for M
11、ixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing ofHydraulic Cements and ConcretesC778 Specification for SandC926 Specification for Application of Portland Cement-Based PlasterC1506 Test Method for Water Retention of Hydraulic Cement-Based Mortars and PlastersIEE
12、E/ASTM SI 10 Standard for Use of the International System of Units (SI) (the Modernized Metric System)1This specification is under the jurisdiction of ASTM Committee C01 on Cement and is the direct responsibility of Subcommittee C01.11 on Masonry Cement.Current edition approved Sept. 15, 2005. Publi
13、shed October 2005. Originally approved in 1996. Last previous edition approved in 2003 as C132803a. DOI:10.1520/C1328-05.Current edition approved April 1, 2012. Published May 2012. Originally approved in 1996. Last previous edition approved in 2005 as C1328 05. DOI:10.1520/C1328_C1328M-12.2Annual Bo
14、ok of ASTM Standards, Vol 04.01. See the section on Safety Precautions in the Manual of Cement Testing.3For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standard
15、s Document Summary page on the ASTM website.1This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately,
16、 ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.
17、Terminology3.1 DefinitionsTerms used in this specification are defined in Terminology C219 and Specification C926.3.2 Definition of Term Specific to This Standard:3.2.1 plastic cementa hydraulic cement, primarily used in portland cement-based plastering construction, consisting of amixture of portla
18、nd or blended hydraulic cement and plasticizing materials (such as limestone or hydrated or hydraulic lime),together with other materials introduced to enhance one or more properties such as setting time, workability, water retention, anddurability.3.2.1.1 DiscussionThe term “plastic” does not refer
19、 to the inclusion of one or more organic components in the cement. Thecement is predominantly inorganic in chemical composition. The term “plastic” refers to the ability of the cement to impart to theplaster a high degree of workability, and for the plaster to remain workable or plastic for a period
20、 of time so that, after initialapplication and floating on the wall, it can be reworked to obtain both densification and desired texture.4. Physical Properties4.1 Plastic cement shall conform to the applicable requirements prescribed in Table 1.5. Sampling5.1 At the option of the purchaser, the ceme
21、nt shall be sampled and tested to verify compliance with this specification, samplingand testing shall be performed in accordance with Practice C183.5.2 Practice C183 is not designed for manufacturing quality control and is not required for manufacturers certification.6. Temperature and Humidity6.1
22、The temperature and relative humidity of the air in the vicinity of the mixing slab and dry materials, molds, base plates, andmixing bowl shall conform to the requirements of Test Method C109/C109M.6.2 The moist cabinet or moist room shall conform to the requirements of Specification C511.7. Finenes
23、s7.1 Determine the residue on the 45-m (No. 325) sieve in accordance with Test Method C430.8. Normal Consistency8.1 Determine normal consistency by the Vicat apparatus in accordance with Test Method C187.9. Autoclave Expansion9.1 Determine the autoclave expansion in accordance with Test Method C151.
24、After molding, store the bars in the moist cabinetor room for 48 h 6 30 min before removal from the molds for measurement and testing in the autoclave. Calculate the differencein length of the test specimen before and after autoclaving to the nearest 0.01 % of the effective gage length, and report a
25、s theautoclave expansion of the plastic cement.10. Time of Setting10.1 Determine the time of setting by the Gillmore needle method in accordance with Test Method C266.TABLE 1 Physical RequirementsPlastic Cement Type SMFineness, residue on a 45-m (No. 325) sieve, max,% 24 24Autoclave expansion, max,
26、% 1.0 1.0Time of setting, Gillmore method:Initial set, minutes, not less than 90 90Initial set, minutes, not more than 1000 1000Compressive strength (average of three cubes):The compressive strength of mortar cubes, composed of 1 part cement and 3 parts blended sand(half graded standard sand and hal
27、f standard 2030 sand) by volume, prepared and tested in accordancewith this specification, shall be equal to or higher than the values specified for the ages indicated below:7 days, MPa (psi) 9.0 (1300) 12.4(1800)7 days, MPa psi 9.0 1300 12.4180028 days, MPa (psi) 14.5(2100)20.0(2900)28 days, MPa ps
28、i 14.5210020.02900Air content of mortar:Min, volume% 88Max, volume % 20 20Water retention value, min, %, of original flow 70 70C1328/C1328M 12211. Density11.1 Determine the density of the plastic cement in accordance with Test Method C188, using kerosine as the liquid. Use thedensity so determined i
29、n the calculation of the air content of the plaster.12. Blended Sand12.1 The sand shall be a blend of equal parts by weight of graded standard sand and standard 2030 sand conforming toSpecification C778.13. Preparation of Plaster13.1 Proportions for PlasterPlaster for air entrainment, compressive st
30、rength, and water retention tests shall be proportionedto contain 1620 g of sand and a mass of plastic (stucco) cement, in grams, as indicated in Table 2. The sand shall consist of 810g of graded standard sand and 810 g of 2030 standard sand (Note 1).sand. The quantity of water, measured in millilit
31、res, shallbe such as to produce a flow of 110 6 5, as determined by Test Method C109/C109M.NOTE1Historically, field-mixed plaster has been proportioned by volume measured in increments or fractions of 1 ft3. The comparable whole SI-unitvolume to 1 ft3is 28 L. The specified plaster proportions approx
32、imate the 1:3 nominal proportions by volume, commonly specified for construction, onthe basis of the following assumed mass and volume relationships:The mass of dry sand in 28 L of loose damp sand is 36 k.28 L of Type S Plastic (Stucco) cement has a mass of 35 kg.28 L of Type M Plastic (Stucco) ceme
33、nt has a mass of 42 kg. For example, the amount of cement needed to provide a 1:3 volume proportion of cementto sand using a Type S Plastic (Stucco) cement is:A516203C/B!51620335/108!5525C1328-05_1 (1)where:A = number of grams of cement to be used in the mortar with 1620 g of sand,B = 3336=108 kg, t
34、he mass of dry sand in 84 (or 3328) L of loose damp sand, andC = mass of Type S Plastic (Stucco) cement per 28 L.13.2 Mixing of PlastersMix the plaster in accordance with Practice C305.13.3 Determination of FlowDetermine the flow in accordance with Test Method C109/C109M.14. Air Entrainment14.1 Proc
35、edureIf the plaster has the correct flow, use a separate portion of the plaster for the determination of entrained air.Determine the mass of 400 mL of plaster in accordance with Test Method C185.14.2 CalculationCalculate the air content of the plaster, and report it to the nearest 1 % as follows:D 5
36、 W11 W21 Vw!/W1/S1! 1 W2/S2! 1 Vw#(1)C1328_C1328M-12_1C1328_C1328M-12_1where:D = density of air-free plaster, g/cm3,W1= mass of cement, g,W2= mass of sand, g,Vw= mL-g of water used,S1= density of cement, g/cm3,S2= density of standard sand, 2.65 g/cm3,A = volume percent of entrained air, andWm= mass
37、of 400 mL of plaster, g.15. Compressive Strength15.1 Test Specimens:15.1.1 MoldingImmediately after determining the flow and mass of 400 mL of plaster, return all of the plaster to the mixingbowl and remix for 15 s at the medium speed. Then mold the test specimens in accordance with Test Method C109
38、/C109M, exceptthat the elapsed time for mixing plaster, determining flow, determining air entrainment, and starting the molding of cubes shall bewithin 8 min.TABLE 2 Cement in Laboratory Batch of PlasticerPlastic (Stucco) Cement Type Mass of Cement, gS 525S 510M 630M 540C1328/C1328M 12315.1.2 Storag
39、eImmediately after molding, store all test specimens in the molds on plane plates in a moist cabinet or moistroom for 48 to 52 h in such a manner that the upper surfaces shall be exposed to the moist air. Then remove the cubes from themolds, and place them in the moist cabinet or moist room for 5 da
40、ys in such a manner as to allow free circulation of air aroundat least five faces of the specimens. At the age of 7 days, immerse the cubes for the 28-day tests in saturated lime water in storagetanks of noncorrodible materials.15.2 Procedure:15.2.1 Test the cube specimens immediately after their re
41、moval from the moist cabinet or moist room for 7-day specimens, andimmediately after their removal from storage water for all other specimens. If more than one specimen at a time is removed fromthe moist cabinet or moist room for 7-day tests, cover these cubes with a damp cloth until the time of tes
42、ting.15.2.2 The remainder of the testing procedure shall conform to Test Method C109/C109M.16. Water Retention16.1 Water retention shall be determined in accordance with the procedures in Test Method C1506, except wherever the term“mortar” is used, read “plaster.”17. Storage17.1 The cement shall be
43、stored in such a manner as to permit easy access for the proper inspection and identification of eachshipment, and in a suitable weathertight building that will protect the cement from dampness and minimize warehouse set.18. Inspection18.1 Adequate facilities shall be provided to the purchaser for t
44、he necessary inspection and sampling.18.2 All packages shall be in good condition at the time of inspection.19. Rejection19.1 At the option of the purchaser, the cement shall be rejected if it fails to meet any of the requirements of this specification.19.2 At the option of the purchaser, packages m
45、ore than 2 % below the mass marked thereon shall be rejected. At the optionof the purchaser, the entire shipment represented shall be rejected if the average mass of packages in any shipment as shown byweighing 50 packages taken at random is less than that marked on the packages.19.3 At the option o
46、f the purchaser, cement remaining in storage prior to shipment for a period greater than six months aftertesting shall be retested and, at the option of the purchaser, shall be rejected if it fails to meet any of the requirements of thisspecification.20. Manufacturers Certification20.1 Upon request
47、of the purchaser in the contract or order, a manufacturers report shall be furnished at the time of shipmentstating the results of the tests made on samples of the material taken during production or transfer and certifying that the applicablerequirements of this specification have been met.21. Pack
48、aging and Package Marking21.1When plastic cement is delivered in packages, the brand, name of the manufacturer, net mass of the package in kg (see Note2) shall be indicated plainly thereon. Similar information shall be provided in the shipping documents accompanying the shipmentof plastic cement in
49、bulk.NOTE2To facilitate the change to SI units, a standard SI package size of 35 Kg for Type S and 42 Kg for Type M will provide convenient massincrements reasonably similar to the traditional 77- and 94-lb packages.21.1 When plastic cement is delivered in packages, the brand, name of the manufacturer, and net mass of the package inkilograms shall be indicated plainly thereon. Similar information shall be provided in the shipping documents accompanying theshipment of plastic cement in bulk.22. Keywords22.1 plaster; plastic cement; portl
