1、Designation: C989/C989M 12aC989/C989M 13Standard Specification forSlag Cement for Use in Concrete and Mortars1This standard is issued under the fixed designation C989/C989M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year
2、of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This specification covers th
3、ree strength grades of slag cement for use as a cementitious material in concrete and mortar.NOTE 1The material described in this specification may be used for blending with portland cement to produce a cement meeting the requirementsof Specification C595 or as a separate ingredient in concrete or m
4、ortar mixtures. The material may also be useful in a variety of special grouts and mortars,and when used with an appropriate activator, as the principal cementitious material in some applications.NOTE 2Information on technical aspects of the use of the material described in this specification is con
5、tained in Appendix X1, Appendix X2, andAppendix X3. More detailed information on that subject is contained in ACI 233R-03.21.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, theinch-pound units are shown in brackets.The values sta
6、ted in each system may not be exact equivalents; therefore, each system shallbe used independently of the other. Combining values from the two systems may result in non-conformance with the standard.Values are stated in only SI units when inch-pound units are not used in practice.1.3 The following s
7、afety hazards caveat pertains only to the test methods described in this specification. This standard does notpurport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard toestablish appropriate safety and health practices and
8、determine the applicability of regulatory limitations prior to use.1.4 The text of this standard references notes and footnotes that provide explanatory information. These notes and footnotes(excluding those in tables) shall not be considered as requirements of this standard.2. Referenced Documents2
9、.1 ASTM Standards:3C109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or 50-mm Cube Specimens)C114 Test Methods for Chemical Analysis of Hydraulic CementC125 Terminology Relating to Concrete and Concrete AggregatesC150 Specification for Portland CementC185 Test
10、Method for Air Content of Hydraulic Cement MortarC188 Test Method for Density of Hydraulic CementC227 Test Method for Potential Alkali Reactivity of Cement-Aggregate Combinations (Mortar-Bar Method)C204 Test Methods for Fineness of Hydraulic Cement by Air-Permeability ApparatusC430 Test Method for F
11、ineness of Hydraulic Cement by the 45-m (No. 325) SieveC441 Test Method for Effectiveness of Pozzolans or Ground Blast-Furnace Slag in Preventing Excessive Expansion of ConcreteDue to the Alkali-Silica ReactionC452 Test Method for Potential Expansion of Portland-Cement Mortars Exposed to SulfateC465
12、 Specification for Processing Additions for Use in the Manufacture of Hydraulic CementsC595 Specification for Blended Hydraulic CementsC1012 Test Method for Length Change of Hydraulic-Cement Mortars Exposed to a Sulfate SolutionC1038 Test Method for Expansion of Hydraulic Cement Mortar Bars Stored i
13、n WaterC1260 Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)1 This specification is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregatesand is the direct responsibility of Subcommittee C09.27 onGround Slag.Current edition approved July 15, 20
14、12Dec. 15, 2013. Published October 2012January 2014. Originally approved in 1982. Last previous edition approved in 2012 asC989/C989M12.12a. DOI: 10.1520/C0989_C0989M-12a.10.1520/C0989_C0989M-13.2 ACI 233R-03 Slag Cement in Concrete and Mortar. Available from American Concrete Institute (ACI), P.O.
15、Box 9094, Farmington Hills, MI 48333.3 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an
16、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, ASTM recommends that users consult prior editions as appropriate. In
17、 all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1C1293 T
18、est Method for Determination of Length Change of Concrete Due to Alkali-Silica ReactionC1567 Test Method for Determining the Potential Alkali-Silica Reactivity of Combinations of Cementitious Materials andAggregate (Accelerated Mortar-Bar Method)D3665 Practice for Random Sampling of Construction Mat
19、erials3. Terminology3.1 For definitions of terms used in this test method, refer to Terminology C125.4. Classification4.1 Slag cement is classified by performance in the slag activity test in three grades: Grade 80, Grade 100, and Grade 120 (seeTable 1).5. Ordering Information5.1 The purchaser shall
20、 specify the grade of slag cement desired and the optional chemical or physical data to be reported.6. Additions6.1 Slag cement covered by this specification shall contain no additions except as follows:6.1.1 It is permissible to add calcium sulfate to slag cement provided it has been demonstrated b
21、y Test Method C1038 that atest mixture will not develop expansion in water exceeding 0.020 % at 14 days. In the test mixture, 50 % of the mass of portlandcement shall be replaced by an equal mass of slag cement. The portland cement used in the test mixture shall meet the requirementsof Specification
22、 C150. When the manufacturer supplies cement under this provision, upon request, supporting data shall besupplied to the purchaser.6.1.2 When processing additions are used in the manufacture of slag cement, the maximum amount used shall comply with therequirements of Specification C465 when tested u
23、sing a blend that is 50 % slag cement and 50 % portland cement by mass.7. Chemical Composition7.1 Slag cement shall conform to the chemical requirements prescribed in Table 2.8. Physical Properties8.1 Slag cement shall conform to the physical requirements of Table 1.9. Sampling9.1 The following samp
24、ling and testing procedures shall be used by the purchaser to verify compliance with this specification.NOTE 3Sulfur in granulated blast-furnace slag is present predominantly as sulfide sulfur. In most cases, instrumental analyses, such as x-rayfluorescence, cannot differentiate sulfide sulfur from
25、sulfate. Determine and report the sulfide sulfur content separately, and do not include it in the SO3calculations.TABLE 1 Physical RequirementsItemFineness:amount retained when wet screened on a 45-m (No. 325)sieve, max %20Specific surface by air permeability, Test Methods C204 shallbe determined an
26、d reported although no limits are re-quired.Air Content of Slag Mortar, max % 12Average ofLast 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 110C989/C989M 1329.2 Take ra
27、ndom grab samples either from a delivery unit or at some point in the loading or unloading process so that no samplerepresents more than 115 Mg 125 tons (Note 4). If samples are taken from rail cars or trucks, take at least two separate 2-kg 5-lbportions and thoroughly mix them to obtain a test samp
28、le (Note 5). Sample by removing approximately a 300-mm 12-in. layerof slag cement. Make a hole before obtaining a sample to avoid dust collector material that has discharged into the delivery unitafter the predominant slag cement flow has ceased. Sample at a rate of one sample per month or one sampl
29、e for each 2300 Mg2500 tons of shipments, whichever is more frequent.NOTE 4Standard statistical procedures are recommended for ensuring that samples are selected by a random procedure; see Practice D3665. Theseprocedures can be used to select the days within a month or within a week that samples wil
30、l be taken. The delivery unit or time of day then should bechosen randomly.NOTE 5The quantity of sample specified is more than adequate for the testing required.A2-kg 5-lb portion should be retained in a sealed containerfor retesting if that is considered necessary to verify compliance.10. Test Meth
31、ods10.1 Slag-Activity Tests with Portland Cement:10.1.1 Slag activity shall be evaluated by determining the compressive strength of portland-cement mortars and thecorresponding mortars made with the same mass of a blend that is 50 % slag cement and 50 % portland cement by mass.NOTE 6Appendix X1 disc
32、usses 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 the slag activity tests shall comply be the common reference cementsupplied by CCRL4 that complies with the standard chemical and physical r
33、equirements of Specification C150, Type I or Type II,and with the additional requirements of total alkali content and compressive strength limits as shown in Table 3. Alternatively, aportland cement source meeting the standard chemical and physical requirements for a C150, Type I or Type II, includi
34、ng theadditional limits in Table 3, is permitted to be used. Sufficient cement shall be reserved to avoid changing reference cement moreoften than every two months.After the initial testing to determine compliance with the compressive strength requirement of Table3, the reference cement shall be re-
35、qualified at least every six months.NOTE 7Different reference cements may produce different SlagActivity Index results. Reference portland cement meeting the requirements of 10.1.2is available from CCRL.510.1.3 Preparation of SpecimensPrepare mortars in accordance with Test Method C109/C109M, except
36、 that sufficient watershall be used in each batch to produce a flow of 1106 5 %. 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 stan
37、dard sand10.1.3.1 Mix a reference cement batch each day that a slag cement-reference cement batch is mixed until at least five batcheshave been mixed with the reference cement. Thereafter, reference cement batches need not be mixed more often than once a weekwhenever slag cement is being produced or
38、 shipped.4 The sole source of supply of the apparatus known to the committee at this time is CCRL, 4441 Buckeystown Pike, Suite C; Frederick, Maryland 21704; www.CCRL.us.If you are aware of alternative suppliers, please provide this information toASTM International Headquarters. Your comments will r
39、eceive careful consideration at a meetingof the responsible technical committee,1 which you may attend.5 The sole source of commercially available reference portland cement known to the committee at this time is CCRL, 4441 Buckeystown Pike, Suite C; Frederick,Maryland 21704; www.CCRL.us. If you are
40、aware of alternative suppliers, please provide this information toASTM International Headquarters. Your comments will receivecareful consideration at a meeting of the responsible technical committee,1 which you may attend.TABLE 2 Chemical RequirementsSulfide sulfur (S), max, % 2.5TABLE 3 Alkali and
41、Strength Limits of Reference PortlandCement for Slag Activity TestsTotal Alkalies (Na2O + 0.658 K2O) min % 0.60max % 0.90Compressive Strength, MPa, min, 28 daysA 35 5000 psiAThe minimum strength limit is based solely on the strength of the Test MethodC109/C109M mortar cubes, as required in Specifica
42、tion C150, regardless of thestrength of the flow-controlled Specification C989 mortar cubes.C989/C989M 13310.1.4 Test AgesDetermine the compressive strength of mortar specimens at 7 and 28 days age in accordance with TestMethod C109/C109M.10.1.5 CalculationCalculate the slag activity index to the ne
43、arest percent for both 7 days and 28 days as follows:Slag activity index,%5SP/P! 3100 (1)SP = average compressive strength of slag cement-reference cement mortar cubes at designated ages, MPa psi, andP = average compressive strength of reference cement mortar cubes at designated age, MPa psi.The ref
44、erence cement-mortar strength used to calculate a slag activity index shall, when a reference cement mortar is mixed onthe same day as a slag cement-reference cement mortar, be the result for that batch. Otherwise, the average of tests of the five mostrecent reference cement-mortar batches shall be
45、used.10.1.6 ReportThe report should include the following:10.1.6.1 Slag activity index, %,10.1.6.2 Compressive strength at 7 and 28 days, of slag cement-reference cement mortar,10.1.6.3 Compressive strength at 7 and 28 days, of portland cement mortar,10.1.6.4 Total alkalies of the reference cement (
46、Na2O + 0.658 K2O),10.1.6.5 Fineness of reference cement, and10.1.6.6 Potential compound composition of the reference portland cement.10.1.7 PrecisionThe following precision statements are applicable when the slag activity index with portland cement is basedon results of tests of two cubes from singl
47、e batches of reference cement and 50-50 slag cement-reference cement mortars mixedon the same day. They are applicable to the slag activity index determined at 7 or 28 days.10.1.7.1 The single-laboratory coefficient of variation has been found to be 4.1 %. Therefore, the slag activity indices ofprop
48、erly conducted tests based on single batches of mortar mixed on the same day should not differ by more than 11.6 % of theiraverage.10.1.7.2 The multilaboratory coefficient of variation has been found to be 5.7 %. Therefore, the slag activity indices of properlyconducted tests of single batches by di
49、fferent laboratories should not differ by more than 16.1 %.10.2 Slag Cement DensityDetermine in accordance with Test Method 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 Test Methods C114, exceptthe sample need not be completely decomposed by acid.10.6 Sulfide Sulfur in Slag CementDetermine
