1、Designation: C 989 09aStandard Specification forSlag Cement for Use in Concrete and Mortars1This standard is issued under the fixed designation C 989; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A num
2、ber 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 slagc
3、ement 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 C 595 or as a separate ingredient in concrete ormortar mixtures. The material
4、may 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
5、 X2,and Appendix X3. More detailed information on that subject is containedin ACI 233R-03, formerly ACI 226.1R.1.2 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
6、methods described in this 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 limitat
7、ions priorto use.1.4 The 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:2C 109/C 109M Test Method for Co
8、mpressive Strength ofHydraulic Cement Mortars (Using 2-in. or 50-mm CubeSpecimens)C114 Test Methods for Chemical Analysis of HydraulicCementC 125 Terminology Relating to Concrete and ConcreteAggregatesC 150 Specification for Portland CementC 185 Test Method for Air Content of Hydraulic CementMortarC
9、 188 Test Method for Density of Hydraulic CementC 204 Test Methods for Fineness of Hydraulic Cement byAir-Permeability ApparatusC 430 Test Method for Fineness of Hydraulic Cement bythe 45-m (No. 325) SieveC 441 Test Method for Effectiveness of Pozzolans orGround Blast-Furnace Slag in Preventing Exce
10、ssive Ex-pansion of Concrete Due to the Alkali-Silica ReactionC 452 Test Method for Potential Expansion of Portland-Cement Mortars Exposed to SulfateC 465 Specification for Processing Additions for Use in theManufacture of Hydraulic CementsC 595 Specification for Blended Hydraulic CementsC 1012 Test
11、 Method for Length Change of Hydraulic-Cement Mortars Exposed to a Sulfate SolutionC 1038 Test Method for Expansion of Hydraulic CementMortar Bars Stored in WaterD 3665 Practice for Random Sampling of ConstructionMaterials2.2 American Concrete Institute Reports:226.1R Ground Granulated Blast-Furnace
12、 Slag as a Cemen-titious Constituent in Concrete3233R-03 Slag Cement in Concrete and Mortar33. Terminology3.1 Definition:3.1.1 blast-furnace slagthe nonmetallic product, consist-ing essentially of silicates and aluminosilicates of calcium andother bases that is developed in a molten condition simult
13、a-neously with iron in a blast furnace (see Terminology C 125).3.2 Definitions of Terms Specific to This Standard:3.2.1 granulated blast-furnace slagthe glassy granularmaterial formed when molten blast-furnace slag is rapidly1This specification is under the jurisdiction of ASTM Committee C09 onConcr
14、ete and Concrete Aggregates and is the direct responsibility of SubcommitteeC09.27 on Ground Slag.Current edition approved July 1, 2009. Published August 2009. Originallyapproved in 1982. Last previous edition approved in 2009 as C 989 09.2For referenced ASTM standards, visit the ASTM website, www.a
15、stm.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.3Available from American Concrete Institute (ACI), P.O. Box 9094, FarmingtonHills, MI 48333.1*A Summary of Changes section
16、 appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.chilled as by immersion in water (see Terminology C 125),with or without compositional adjustments made while theblast-furnace slag is molten.3.2.2 s
17、lag cementgranulated blast-furnace slag, as definedand described in 3.1.1 and 3.2.1, and ground to cement finenesswith or without additions meeting the requirements of thesection on additions.4. Classification4.1 Slag cement is classified by performance in the slagactivity test in three grades: Grad
18、e 80, Grade 100, and Grade120 (see Table 1).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 cement covered by this specification shall containno additions except as follows:6.1.1 It i
19、s permissible to add calcium sulfate to slag cementprovided it has been demonstrated by Test Method C 1038 thata test mixture will not develop expansion in water exceeding0.020 % at 14 days. In the test mixture, 50 % of the mass ofportland cement shall be replaced by an equal mass of slagcement. The
20、 portland cement used in the test mixture shallmeet the requirements of Specification C 150. When themanufacturer supplies cement under this provision, uponrequest, supporting data shall be supplied to the purchaser.6.1.2 When processing additions are used in the manufac-ture of slag cement, the max
21、imum amount used shall complywith the requirements of Specification C 465 when tested usinga 50-50 blend by mass and the portland cement.7. Chemical Composition7.1 Slag cement shall conform to the chemical requirementsprescribed in Table 2.8. Physical Properties8.1 Slag cement shall conform to the p
22、hysical 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 blast-furnace slag is present predomi-nantly as sulfide sulfur. In most cases, instrumental analyses, suc
23、h 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 grab samples either from a delivery unit orat some point in the loading or unloading process so that nosamp
24、le 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 (Note 5). Sample by removing approxi-mately a 300-mm (12-in.) layer of slag. Make a hole beforeobtaining a s
25、ample to avoid dust collector material that hasdischarged into the delivery unit after the predominant slagflow has ceased. Sample at a rate of one sample per month orone sample for each 2300 Mg (2500 tons) of shipments,whichever is more frequent.NOTE 4Standard statistical procedures are recommended
26、 for ensuringthat samples are selected by a random procedure; see Practice D 3665.These procedures can be used to select the days within a month or withina week that samples will be taken. The delivery unit or time of day thenshould be chosen randomly.NOTE 5The quantity of sample specified is more t
27、han 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 Methods10.1 Slag-Activity Tests with Portland Cement:10.1.1 Slag activity shall be evaluated by determining thecompressive s
28、trength of both portland-cement mortars andcorresponding mortars made with the same mass of 50-50 masscombinations of slag cement and portland cement. AppendixX1 discusses the effects of cement, temperature, and amount ofslag cement used on performance with portland cement.10.1.2 Reference CementThe
29、 portland cement used in theslag activity tests shall comply with the standard chemical andphysical requirements of Specification C 150, Type 1 or TypeII, and with the additional requirements of total alkali contentand compressive strength limits as shown in Table 3. Sufficientcement shall be reserv
30、ed to avoid changing reference cementmore often than every two months. After the initial testing todetermine compliance with the compressive strength require-ment of Table 3, the reference cement shall be re-qualified atleast every six months.NOTE 6Different reference cements may produce different S
31、lagActivity Index results.TABLE 1 Physical RequirementsItemFineness:amount retained when wet screened on a 45-m (No. 325)sieve, max %20Specific surface by air permeability, Test Methods C 204 shallbe determined and reported although no limits arerequired.Air Content of Slag Mortar, max % 12Average o
32、fLast FiveConsecutiveSamplesAny IndividualSampleSlag Activity 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, % 2.5C 989 09a210.1.3 Preparation of SpecimensPrepare mortar
33、s in ac-cordance with Test Method C 109/C 109M, except that suffi-cient water shall be used in each batch to produce a flow of1106 5 %. The proportions shall be as follows:Reference Cement Mortar:500 g portland cement1375 g graded standard sandSlag Cement-Reference Cement Mortar:250 g portland cemen
34、t250 g slag cement1375 g graded standard sand10.1.3.1 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 whene
35、ver slag cement is being produced orshipped.10.1.4 Test AgesDetermine the compressive strength ofmortar specimens at 7 and 28 days age in accordance with TestMethod C 109/C 109M.10.1.5 CalculationCalculate the slag activity index to thenearest percent for both 7 days and 28 days as follows:Slag acti
36、vity index, % 5 SP/P! 3 100 (1)SP = average compressive 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 ac
37、tivity index shall, when a reference cement mortar ismixed 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:1
38、0.1.6.1 Slag activity index, %,10.1.6.2 Compressive strength 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
39、.1.6.6 Potential compound composition of the referenceportland 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 cem
40、entmortars mixed on the same day. They are applicable 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
41、same day should not differ by more than 11.6 %of their 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
42、 Cement DensityDetermine in accordance withTest Method C 188.10.3 Amount of Slag Cement Retained on a 45-m (No. 325)SieveDetermine in accordance with Test Method C 430.10.4 Slag Cement Fineness by Air PermeabilityDetermine in accordance with Test Methods C 204.10.5 Sulfate Ion in Slag Cement Reporte
43、d as SO3Determine as sulfur trioxide in accordance with 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 C
44、ontent of Slag Cement MortarDetermine inaccordance with Test Method C 185, except use 350 g of slagcement instead of cement in the standard mortar batch.Calculate using the appropriate density of the slag cement.11. Rejection and Rehearing11.1 The purchaser has the right to reject material that fail
45、sto conform to the requirements of this specification. Rejectionshall be reported 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 7In the event of a Slag Acti
46、vity Index dispute, the purchasershould request a sample of the producers reference 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 specifi
47、ca-tion and the specified requirements have been met. Whenspecified in the 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 Sta
48、tement13.1 At the request of the purchaser, the manufacturer shallstate in writing the nature, amount, and identity of anyprocessing or other additions made to the slag cement.TABLE 3 Alkali and Strength Limits of Reference Cement forSlag Activity TestsTotal Alkalies (Na2O+0.658K2O) min % 0.60max %
49、0.90Compressive Strength, MPa, min, 28 daysA35 (5000 psi)AThe minimum strength limit is based solely on the strength of the Test MethodC 109/C 109M mortar cubes, as required in Specification C 150, regardless of thestrength of the flow-controlled Specification C 989 mortar cubes.C 989 09a314. 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 weight of the slag cement containedtherein shall be plainly marked on each package.
