1、Designation: C 1329 05Standard Specification forMortar Cement1This standard is issued under the fixed designation C 1329; 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
2、the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers three types of mortar cementfor use where mortar for masonry is required.1.2 The values stated in SI units are to be regarded as thestandard
3、. Values in SI units shall be obtained by measurementin SI units or by appropriate conversion, using the Rules forConversion and Rounding given in IEEE/ASTM SI 10,ofmeasurements made in other units.1.3 The text of this standard refers to notes and footnoteswhich provide explanatory material. These n
4、otes and footnotes(excluding those in tables and figures) shall not be consideredas requirements of the standard.1.4 The following safety hazards caveat pertains only toSection 16. This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsi
5、bility 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. (WarningFreshhydraulic cementitious mixtures are caustic and may causechemical burns to skin and tissue upon prolonged exposure.2)2. Refe
6、renced Documents2.1 ASTM Standards:3C91 Specification for Masonry CementC 109/C 109M Test Method for Compressive Strength ofHydraulic Cement Mortars (Using 2-in. or 50-mm CubeSpecimens)C 151 Test Method for Autoclave Expansion of HydraulicCementC 183 Practice for Sampling and the Amount of Testing o
7、fHydraulic CementC 185 Test Method for Air Content of Hydraulic CementMortarC 187 Test Method for Normal Consistency of HydraulicCementC 188 Test Method for Density of Hydraulic CementC 219 Terminology Relating to Hydraulic CementC 266 Test Method for Time of Setting of Hydraulic-Cement Paste by Gil
8、lmore NeedlesC 305 Practice for Mechanical Mixing of Hydraulic CementPastes and Mortars of Plastic ConsistencyC 430 Test Method for Fineness of Hydraulic Cement bythe 45-m (No. 325) SieveC511 Specification for Mixing Rooms, Moist Cabinets,Moist Rooms, and Water Storage Tanks Used in theTesting of Hy
9、draulic Cements and ConcretesC 778 Specification for Standard SandC 1357 Test Methods for Evaluating Masonry BondStrengthC 1506 Test Method for Water Retention of HydraulicCement-Based Mortars and PlastersIEEE/ASTM SI 10 Standard for Use of the InternationalSystem of Units (SI): The Modern Metric Sy
10、stem3. Terminology3.1 DefinitionsTerms used in this specification are definedin Terminology C 219.3.2 Definition of Term Specific to This Standard:3.2.1 mortar cementa hydraulic cement, primarily used inmasonry construction, consisting of a mixture of portland orblended hydraulic cement and plastici
11、zing materials (such as1This specification is under the jurisdiction of ASTM Committee C01 onCement and is the direct responsibility of Subcommittee C01.11 on MasonryCement.Current edition approved September 15, 2005. Published October 2005. Origi-nally approved in 1996. Last previous edition approv
12、ed in 2004 as C 1329 04.2Annual Book of ASTM Standards, Vol 04.01. See the section on SafetyPrecautions in the Manual of Cement Testing.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume in
13、formation, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.limestone or hydrated or hydraulic lime), together with othermaterials introduced to enhance one or more prope
14、rties such assetting time, workability, water retention, and durability.3.2.1.1 DiscussionMortar cement is similar to masonrycement in use and function (See Specification C91). However,this specification requires lower air contents and includes aflexural bond strength requirement.4. Classification4.
15、1 Mortar cements are classified as Type N, S, or M,according to the physical requirements prescribed in Table 1.5. Physical Properties5.1 Mortar cement shall conform to the applicable require-ments prescribed in Table 1 for its classification.6. Sampling6.1 At the option of the purchaser, the cement
16、 shall besampled and tested to verify compliance with this specification,sampling and testing shall be performed in accordance withPractice C 183.6.2 Practice C 183 is not designed for manufacturing qualitycontrol and is not required for manufacturers certification.7. Temperature and Humidity7.1 The
17、 temperature and relative humidity of the air in thevicinity of the mixing slab and dry materials, molds, baseplates, and mixing bowl shall conform to the requirements ofTest Method C 109/C 109M.7.2 The moist cabinet or moist room shall conform to therequirements of Specification C511.8. Fineness8.1
18、 Determine the residue on the 45-m (No. 325) sieve inaccordance with Test Method C 430.9. Normal Consistency9.1 Determine the normal consistency by the Vicat appara-tus in accordance with Test Method C 187.10. Autoclave Expansion10.1 Determine the autoclave expansion in accordance withTest Method C
19、151. After molding, store the bars in the moistcabinet or room for 48 h 6 30 min before removal from themolds for measurement and testing in the autoclave. Calculatethe difference in length of the test specimen before and afterautoclaving to the nearest 0.01 % of the effective gage length,and report
20、 as the autoclave expansion of the mortar cement.11. Time of Setting11.1 Determine the time of setting by the Gillmore needlemethod in accordance with Test Method C 266.12. Density12.1 Determine the density of the mortar cement in accor-dance with Test Method C 188, using kerosine as the liquid.Use
21、the density so determined in the calculation of the aircontent of the mortars.13. Blended Sand13.1 The sand shall be a blend of equal parts by weight ofgraded standard sand and 2030 standard sand conforming toSpecification C 778.14. Preparation of Mortar14.1 Proportions for MortarMortar for air entr
22、ainment,compressive strength, and water retention tests shall be pro-portioned to contain 1620 g of sand and a mass of cement, ingrams, as indicated in Table 2. The sand shall consist of 810 gof graded standard sand and 810 g of 20-30 standard sand(Note 1). The quantity of water, measured in millili
23、tres, shallbe such as to produce a flow of 110 6 5 as determined by TestMethod C 109/C 109M.NOTE 1Historically, field-mixed mortar has been proportioned byvolume measured in increments or fractions of 1 ft3. The comparablewhole SI-unit volume to 1 ft3is 28 L. The specified mortar proportionsapproxim
24、ate the 1:3 nominal proportions by volume, commonly specifiedfor construction, on the basis of the following assumed mass and volumerelationships:The mass of dry sand in 28 L of loose damp sand is 36 kg.28 L of Type N mortar cement has a mass of 32 kg.28 L of Type S mortar cement has a mass of 34 kg
25、.28 L of Type M mortar cement has a mass of 36 kg.For example, the amount of cement needed to provide a 1:3 volumeproportion of cement to sand using a Type N mortar cement is calculatedas follows:TABLE 1 Physical RequirementsMortar Cement Type NSMFineness, residue on a 45-m (No. 325) sieve, max, % 2
26、4 24 24Autoclave expansion, max, % 1.0 1.0 1.0Time of setting, Gillmore method:Initial set, minutes, not less than 120 90 90Initial set, minutes, not more than 1000 1000 1000Compressive strength (average of three cubes):The compressive strength of mortar cubes, composed of 1 part cement and 3 parts
27、blended sand (half gradedstandard sand and half standard 2030 sand) by volume, prepared and tested in accordance with thisspecification, shall be equal to or higher than the values specified for the ages indicated below:7 days, MPa (psi) 3.5 (500) 9.0 (1300) 12.4 (1800)28 days, MPa (psi) 6.2 (900) 1
28、4.5 (2100) 20.0 (2900)Flexural bond strength28 days, min, MPa (psi) 0.5 (70) 0.7 (100) 0.8 (115)Air content of mortar:Min, volume % 888Max, volume % 17 15 15Water retention value, min, %, of original flow 70 70 70C1329052A 5 1620 3 C/B! 5 1620 3 32/108! 5 480 (1)where:A = number of grams of cement t
29、o be used in the mortarwith 1620 g of sand,B =33 36 = 108 kg, the mass of dry sand in 84 (or 3 328) L of loose damp sand, andC = mass of Type N mortar cement per 28 L.14.2 Mixing of MortarsMix the mortar in accordancewith Practice C 305.14.3 Determination of FlowDetermine the flow in accor-dance wit
30、h Test Method C 109/C 109M.15. Air Entrainment15.1 ProcedureIf the mortar has the correct flow, use aseparate portion of the mortar for the determination of en-trained air. Determine the mass of 400 mL of mortar inaccordance with Test Method C 185.15.2 CalculationCalculate the air content of the mor
31、tar,and report it to the nearest 1 % as follows:D 5 W11 W21 Vw!/W1/S1! 1 W2/S2!1 Vw# A5 100 2 Wm/4D! (2)where:D = density of air-free mortar, 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 percen
32、t of entrained air, andWm= mass of 400 mL of mortar, g.16. Compressive Strength16.1 Test Specimens:16.1.1 MoldingImmediately after determining the flowand mass of 400 mL of mortar, return all of the mortar to themixing bowl and remix for 15 s at the medium speed. Thenmold the test specimens in accor
33、dance with Test MethodC 109/C 109M, except that the elapsed time for mixing mortar,determining flow, determining air entrainment, and starting themolding of cubes shall be within 8 min.16.1.2 StorageImmediately after molding, store all testspecimens in the molds on plane plates in a moist cabinet or
34、moist room for 48 to 52 h in such a manner that the uppersurfaces shall be exposed to the moist air. Then remove thecubes from the molds, and place them in the moist cabinet ormoist room for 5 days in such a manner as to allow freecirculation of air around at least five faces of the specimens. Atthe
35、 age of 7 days, immerse the cubes for the 28-day tests insaturated lime water in storage tanks of noncorrodible materi-als.16.2 Procedure:16.2.1 Test the cube specimens immediately after theirremoval from the moist cabinet or moist room for 7-dayspecimens, and immediately after their removal from st
36、oragewater for all other specimens. If more than one specimen at atime is removed from the moist cabinet or moist room for7-day tests, cover these cubes with a damp cloth until the timeof testing.16.2.2 The remainder of the testing procedure shall conformto Test Method C 109/C 109M.17. Water Retenti
37、on17.1 Water retention shall be determined in accordance withthe procedures in Test Method C 1506.18. Flexural Bond Strength18.1 Flexural bond strength shall be determined in accor-dance with the test method for laboratory prepared specimensof Test Methods C 1357, except sand shall be a blend of equ
38、almass of graded and standard 20-30 sand conforming toSpecification C 778 and mortar shall be proportioned to con-tain mass of cement in kg equal to 0.20 times the net mass inkg printed on the bag and 22.0 kg of sand. The flexural bondstrength of mortar cement shall be determined as the averagegross
39、 area flexural bond strength of 30 joints minus 1.28 timesthe standard deviation of the sample.19. Storage19.1 The cement shall be stored in such a manner as topermit easy access for proper inspection and identification ofeach shipment, and in a suitable weathertight building that willprotect the ce
40、ment from dampness and minimize warehouseset.20. Inspection20.1 Adequate facilities shall be provided to the purchaserfor the necessary inspection and sampling.20.2 All packages shall be in good condition at the time ofinspection.21. Rejection21.1 At the option of the purchaser, the cement shall ber
41、ejected if it fails to meet any of the requirements of thisspecification.21.2 At the option of the purchaser, packages more than 2 %below the mass marked thereon shall be rejected. At the optionof the purchaser, the entire shipment shall be rejected if theaverage mass of packages in any shipment, as
42、 shown byweighing 50 packages taken at random, is less than that markedon the packages.21.3 At the option of the purchaser, cement remaining instorage prior to shipment for a period greater than six monthsafter testing shall be retested and, at the option of thepurchaser, shall be rejected if it fai
43、ls to meet any of therequirements of this specification.22. Manufacturers Certification22.1 Upon request of the purchaser in the contract or order,a manufacturers report shall be furnished at the time ofTABLE 2 Cement in Laboratory Batch of MortarMortar Cement Type Mass of Cement, gN 480S 510M 540C1
44、329053shipment stating the results of the tests made on samples of thematerial taken during production or transfer and certifying thatthe applicable requirements of this specification have been met.23. Packaging and Package Marking23.1 When mortar cement is delivered in packages, thebrand, name of t
45、he manufacturer, type of mortar cement, andnet mass of the package in kilograms (Note 2) shall beindicated plainly thereon. Similar information shall be pro-vided in the shipping documents accompanying the shipmentof mortar cement in bulk.NOTE 2To facilitate the change to SI units, a standard metric
46、 packagesize of 32 kg for Type N, 34 kg for Type S, and 36 kg for Type M willprovide convenient mass increments reasonably similar to the traditional70, 75, and 80lb packages.24. Keywords24.1 flexural bond strength; masonry; mortar; mortarcementASTM International takes no position respecting the val
47、idity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is sub
48、ject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headqua
49、rters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-83
