1、Designation: C989 10Standard Specification forSlag Cement for Use in Concrete and Mortars1This standard is issued under the fixed designation C989; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number
2、 in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specification covers three strength grades of slagceme
3、nt for use as a cementitious material in concrete andmortar.NOTE 1The material described in this specification may be used forblending with portland cement to produce a cement meeting the require-ments of Specification C595 or as a separate ingredient in concrete ormortar mixtures. The material may
4、also be useful in a variety of specialgrouts and mortars, and when used with an appropriate activator, as theprincipal cementitious material in some applications.NOTE 2Information on technical aspects of the use of the materialdescribed in this specification is contained in Appendix X1, Appendix X2,
5、and Appendix X3. More detailed information on that subject is containedin ACI 233R-03.21.2 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.3 The following safety hazards caveat pertains only to thetest methods described in thi
6、s specification. This standard doesnot purport to address all of the safety concerns, if any,associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.1.4 The
7、 text of this standard references notes and footnotesthat provide explanatory information. These notes and foot-notes (excluding those in tables) shall not be considered asrequirements of this standard.2. Referenced Documents2.1 ASTM Standards:3C109/C109M Test Method for Compressive Strength ofHydra
8、ulic Cement Mortars (Using 2-in. or 50-mm CubeSpecimens)C114 Test Methods for Chemical Analysis of HydraulicCementC125 Terminology Relating to Concrete and Concrete Ag-gregatesC150 Specification for Portland CementC185 Test Method for Air Content of Hydraulic CementMortarC188 Test Method for Density
9、 of Hydraulic CementC204 Test Methods for Fineness of Hydraulic Cement byAir-Permeability ApparatusC430 Test Method for Fineness of Hydraulic Cement by the45-m (No. 325) SieveC441 Test Method for Effectiveness of Pozzolans orGround Blast-Furnace Slag in Preventing Excessive Ex-pansion of Concrete Du
10、e to the Alkali-Silica ReactionC452 Test Method for Potential Expansion of Portland-Cement Mortars Exposed to SulfateC465 Specification for Processing Additions for Use in theManufacture of Hydraulic CementsC595 Specification for Blended Hydraulic CementsC1012 Test Method for Length Change of Hydrau
11、lic-Cement Mortars Exposed to a Sulfate SolutionC1038 Test Method for Expansion of Hydraulic CementMortar Bars Stored in WaterD3665 Practice for Random Sampling of Construction Ma-terials3. Terminology3.1 For definitions of terms used in this test method, refer toTerminology C125.4. Classification4.
12、1 Slag cement is classified by performance in the slagactivity test in three grades: Grade 80, Grade 100, and Grade120 (see Table 1).1This specification is under the jurisdiction of ASTM Committee C09 onConcrete and Concrete Aggregates and is the direct responsibility of SubcommitteeC09.27 on Ground
13、 Slag.Current edition approved Dec. 15, 2010. Published January 2011. Originallyapproved in 1982. Last previous edition approved in 2009 as C98909a. DOI:10.1520/C0989-10.2ACI 233R-03 Slag Cement in Concrete and Mortar. Available from AmericanConcrete Institute (ACI), P.O. Box 9094, Farmington Hills,
14、 MI 48333.3For 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.1*A Summary of Changes section appears at the end o
15、f this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5. Ordering Information5.1 The purchaser shall specify the grade of slag cementdesired and the optional chemical or physical data to bereported.6. Additions6.1 Slag cemen
16、t covered by this specification shall containno additions except as follows:6.1.1 It is permissible to add calcium sulfate to slag cementprovided it has been demonstrated by Test Method C1038 thata test mixture will not develop expansion in water exceeding0.020 % at 14 days. In the test mixture, 50
17、% of the mass ofportland cement shall be replaced by an equal mass of slagcement. The portland cement used in the test mixture shallmeet the requirements of Specification C150. When the manu-facturer supplies cement under this provision, upon request,supporting data shall be supplied to the purchase
18、r.6.1.2 When processing additions are used in the manufac-ture of slag cement, the maximum amount used shall complywith the requirements of Specification C465 when tested usinga blend that is 50 % slag cement and 50 % portland cement bymass.7. Chemical Composition7.1 Slag cement shall conform to the
19、 chemical requirementsprescribed in Table 2.8. Physical Properties8.1 Slag cement shall conform to the physical requirementsof Table 1.9. Sampling9.1 The following sampling and testing procedures shall beused by the purchaser to verify compliance with this specifi-cation.NOTE 3Sulfur in granulated b
20、last-furnace slag is present predomi-nantly as sulfide sulfur. In most cases, instrumental analyses, such as x-rayfluorescence, cannot differentiate sulfide sulfur from sulfate. Determineand report the sulfide sulfur content separately, and do not include it in theSO3calculations.9.2 Take random gra
21、b samples either from a delivery unit orat some point in the loading or unloading process so that nosample represents more than 115 Mg (125 tons) (Note 4). Ifsamples are taken from rail cars or trucks, take at least twoseparate 2-kg (5-lb) portions and thoroughly mix them toobtain a test sample (Not
22、e 5). Sample by removing approxi-mately a 300-mm (12-in.) layer of slag cement. Make a holebefore obtaining a sample to avoid dust collector material thathas discharged into the delivery unit after the predominant slagcement flow has ceased. Sample at a rate of one sample permonth or one sample for
23、each 2300 Mg (2500 tons) ofshipments, whichever is more frequent.NOTE 4Standard statistical procedures are recommended for ensuringthat samples are selected by a random procedure; see Practice D3665.These procedures can be used to select the days within a month or withina week that samples will be t
24、aken. The delivery unit or time of day thenshould be chosen randomly.NOTE 5The quantity of sample specified is more than adequate for thetesting required. A 2-kg (5-lb) portion should be retained in a sealedcontainer for retesting if that is considered necessary to verify compliance.10. Test Methods
25、10.1 Slag-Activity Tests with Portland Cement:10.1.1 Slag activity shall be evaluated by determining thecompressive strength of portland-cement mortars and thecorresponding mortars made with the same mass of a blend thatis 50 % slag cement and 50 % portland cement by mass.NOTE 6Appendix X1 discusses
26、 the effects of cement, temperature,and amount of slag cement used on performance with portland cement.10.1.2 Reference CementThe portland cement used in theslag activity tests shall comply with the standard chemical andphysical requirements of Specification C150, Type 1 or Type II,and with the addi
27、tional requirements of total alkali content andcompressive strength limits as shown in Table 3. Sufficientcement shall be reserved to avoid changing reference cementmore often than every two months. After the initial testing todetermine compliance with the compressive strength require-ment of Table
28、3, the reference cement shall be re-qualified atleast every six months.NOTE 7Different reference cements may produce different SlagActivity Index results.10.1.3 Preparation of SpecimensPrepare mortars in ac-cordance with Test Method C109/C109M, except that sufficientTABLE 1 Physical RequirementsItem
29、Fineness:amount retained when wet screened on a 45-m (No. 325)sieve, max %20Specific surface by air permeability, Test Methods C204 shallbe determined and reported although no limits arerequired.Air Content of Slag Mortar, max % 12Average ofLast FiveConsecutiveSamplesAny IndividualSampleSlag Activit
30、y Index, min, %7-Day IndexGrade 80 . .Grade 100 75 70Grade 120 95 9028-Day IndexGrade 80 75 70Grade 100 95 90Grade 120 115 110TABLE 2 Chemical RequirementsSulfide sulfur (S), max, % 2.5TABLE 3 Alkali and Strength Limits of Reference PortlandCement for Slag Activity TestsTotal Alkalies (Na2O+0.658K2O
31、) min % 0.60max % 0.90Compressive Strength, MPa, min, 28 daysA35 (5000 psi)AThe minimum strength limit is based solely on the strength of the Test MethodC109/C109M mortar cubes, as required in Specification C150, regardless of thestrength of the flow-controlled Specification C989 mortar cubes.C989 1
32、02water shall be used in each batch to produce a flow of 11065 %. The proportions of dry ingredients shall be as follows:Reference Cement Mortar:500 g portland cement1375 g graded standard sandSlag Cement-Reference Cement Mortar:250 g portland cement250 g slag cement1375 g graded standard sand10.1.3
33、.1 Mix a reference cement batch each day that a slagcement-reference cement batch is mixed until at least fivebatches have been mixed with the reference cement. Thereaf-ter, reference cement batches need not be mixed more oftenthan once a week whenever slag cement is being produced orshipped.10.1.4
34、Test AgesDetermine the compressive strength ofmortar specimens at 7 and 28 days age in accordance with TestMethod C109/C109M.10.1.5 CalculationCalculate the slag activity index to thenearest percent for both 7 days and 28 days as follows:Slag activity index, % 5 SP/P! 3 100 (1)SP = average compressi
35、ve strength of slag cement-reference cement mortar cubes at designated ages,MPa (psi), andP = average compressive strength of reference cementmortar cubes at designated age, MPa (psi).The reference cement-mortar strength used to calculate aslag activity index shall, when a reference cement mortar is
36、mixed on the same day as a slag cement-reference cementmortar, be the result for that batch. Otherwise, the average oftests of the five most recent reference cement-mortar batchesshall be used.10.1.6 ReportThe report should include the following:10.1.6.1 Slag activity index, %,10.1.6.2 Compressive s
37、trength at 7 and 28 days, of slagcement-reference cement mortar,10.1.6.3 Compressive strength at 7 and 28 days, of portlandcement mortar,10.1.6.4 Total alkalies of the reference cement(Na2O + 0.658 K2O),10.1.6.5 Fineness of reference cement, and10.1.6.6 Potential compound composition of the referenc
38、eportland cement.10.1.7 PrecisionThe following precision statements areapplicable when the slag activity index with portland cement isbased on results of tests of two cubes from single batches ofreference cement and 50-50 slag cement-reference cementmortars mixed on the same day. They are applicable
39、 to the slagactivity index determined at 7 or 28 days.10.1.7.1 The single-laboratory coefficient of variation hasbeen found to be 4.1 %. Therefore, the slag activity indices ofproperly conducted tests based on single batches of mortarmixed on the same day should not differ by more than 11.6 %of thei
40、r average.10.1.7.2 The multilaboratory coefficient of variation hasbeen found to be 5.7 %. Therefore, the slag activity indices ofproperly conducted tests of single batches by different labora-tories should not differ by more than 16.1 %.10.2 Slag Cement DensityDetermine in accordance withTest Metho
41、d C188.10.3 Amount of Slag Cement Retained on a 45-m (No. 325)SieveDetermine in accordance with Test Method C430.10.4 Slag Cement Fineness by Air PermeabilityDetermine in accordance with Test Methods C204.10.5 Sulfate Ion in Slag Cement Reported as SO3Determine as sulfur trioxide in accordance with
42、Test MethodsC114, except the sample need not be completely decomposedby acid.10.6 Sulfide Sulfur in Slag CementDetermine in accor-dance with Test Methods C114.10.7 Chloride Content of SlagDetermine in accordancewith Test Methods C114.10.8 Air Content of Slag Cement MortarDetermine inaccordance with
43、Test Method C185, except use 350 g of slagcement in the standard mortar batch. Calculate using theappropriate density of the slag cement.11. Rejection and Rehearing11.1 The purchaser has the right to reject material that failsto conform to the requirements of this specification. Rejectionshall be re
44、ported to the producer or supplier promptly and inwriting. In case of dissatisfaction with the results of the tests,the producer or supplier is not prohibited from making a claimfor retesting.NOTE 8In the event of a Slag Activity Index dispute, the purchasershould request a sample of the producers r
45、eference cement for retest.12. Certification12.1 When specified in the purchase order or contract, thepurchaser shall be furnished certification that samples repre-senting each lot have been tested as directed in this specifica-tion and the specified requirements have been met. Whenspecified in the
46、purchase order or contract, a report of the testresults shall be furnished.12.2 When specified in the purchase order or contract, testdata shall be furnished on the chloride ion content of the slagcement.13. Manufacturers Statement13.1 At the request of the purchaser, the manufacturer shallstate in
47、writing the nature, amount, and identity of anyprocessing or other additions made to the slag cement.14. Package Marking and Shipping Information14.1 When the slag cement is delivered in packages, theclassification of the slag cement, the name and brand of themanufacturer, and the mass of the slag c
48、ement containedtherein shall be plainly marked on each package. Similarinformation shall be provided in the shipping invoices accom-panying the shipment of packaged or bulk slag cement. Allpackages shall be in good condition at the time of inspection.C989 10315. Storage15.1 The slag cement shall be
49、stored to permit easy accessfor proper inspection and identification of each shipment and ina suitable weather-tight building that will protect the slagcement from dampness and minimize quality deterioration.16. Keywords16.1 blast furnace slag; granulated blast furnace slag; slagactivity index; slag cementAPPENDIXES(Nonmandatory Information)X1. CONTRIBUTION OF SLAG CEMENT TO CONCRETE STRENGTHX1.1 When slag cement is used in concrete with portlandcement, the levels and rate of strength development willdepend importantly on the properties of the slag cem
