1、Designation:C98910 Designation: C989/C989M 11Standard 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
2、year 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 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-03.21.2The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.2 The values stated in either SI units or inch-pou
6、nd units are to be regarded separately as standard. Within the text, theinch-pound units are shown in brackets. The values stated 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-confo
7、rmance with the standard.Values are stated in only SI units when inch-pound units are not used in practice.1.3 The following safety 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, associate
8、d with its use. It is the responsibility of the user of this standard toestablish appropriate safety and health practices and 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 no
9、tes and footnotes(excluding those in tables) shall not be considered as requirements of this standard.2. Referenced Documents2.1 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
10、 Hydraulic CementC125 Terminology Relating to Concrete and Concrete AggregatesC150 Specification for Portland CementC185 Test Method for Air Content of Hydraulic Cement MortarC188 Test Method for Density of Hydraulic CementC204 Test Methods for Fineness of Hydraulic Cement by Air-Permeability Appara
11、tusC430 Test Method for Fineness 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 Morta
12、rs Exposed to SulfateC465 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 Ce
13、ment Mortar Bars Stored in WaterD3665 Practice for Random Sampling of Construction Materials1This specification is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C09.27 onGround Slag.Current edition approved Dec. 15,
14、2010.2011. Published January 2011.2012. Originally approved in 1982. Last previous edition approved in 20092010 asC98909a.C98910. DOI: 10.1520/C0989_C0989M-101.2ACI 233R-03 Slag Cement in Concrete and Mortar. Available from American Concrete Institute (ACI), P.O. Box 9094, Farmington Hills, MI 48333
15、.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 standards Document Summary page on the ASTM website.1This document is not an ASTM standard and is intended onl
16、y 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 all cases only the current versi
17、onof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3. Terminology3.1 For definitions of te
18、rms 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 specify the grade of slag cement desired and
19、 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:6.1.1It6.1.1 It is permissible to add calcium sulfate to slag cement provided it has been demonstrated by Test Method C1038that a test mixture
20、 will not develop expansion in water exceeding 0.020 % at 14 days. In the test mixture, 50 % of the mass ofportland cement shall be replaced by an equal mass of slag cement. The portland cement used in the test mixture shall meet therequirements of Specification C150. When the manufacturer supplies
21、cement under this provision, upon request, supporting datashall be supplied 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 using a blend that is 50 % slag cement
22、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 sampling and testing procedures shall be u
23、sed 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 sulfate. Determine and report the sulf
24、ide sulfur content separately, and do not include it in theSO3calculations.9.2 Take random 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)125 tons (Note 4). If samples are taken from rail cars or tr
25、ucks, take at least two separate2-kg (5-lb)5-lb portions and thoroughly mix them to obtain a test sample (Note 5). Sample by removing approximately a 300-mm(12-in.)12-in. layer of slag cement. Make a hole before obtaining a sample to avoid dust collector material that has dischargedinto the delivery
26、 unit after the predominant slag cement flow has ceased. Sample at a rate of one sample per month or one samplefor each 2300 Mg (2500 tons)2500 tons of shipments, whichever is more frequent.TABLE 1 Physical RequirementsItemFineness:amount retained when wet screened on a 45-m (No. 325)sieve, max %20S
27、pecific 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 Activity Index, min, %7-Day IndexGrade 80 . .Grade 100 75 70Grade 120 95 9028-Day In
28、dexGrade 80 75 70Grade 100 95 90Grade 120 115 110C989/C989M 112NOTE 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 will be t
29、aken. 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. A 2-kg (5-lb)5-lb portion should be retained in a sealedcontainer for retesting if that is considered necessary to verify compliance.10. Test Me
30、thods10.1 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 di
31、scusses 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 with the standard chemical andphysical requirements of Specification C150, Type 1 or Type II, and wit
32、h the additional requirements of total alkali content andcompressive strength limits as shown in Table 3. Sufficient cement shall be reserved to avoid changing reference cement more oftenthan every two months. After the initial testing to determine compliance with the compressive strength requiremen
33、t of Table 3, thereference cement shall be re-qualified at least every six months.NOTE 7Different reference cements may produce different Slag Activity Index results.10.1.3 Preparation of SpecimensPrepare mortars in accordance with Test Method C109/C109M, except that sufficient watershall be used in
34、 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 standard sand10.1.3.1 Mix a reference ceme
35、nt 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 shipped.10.1.4 Test AgesDetermine the
36、 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 nearest percent for both 7 days and 28 days as follows:Slag activity index, % 5 SP/P! 3 100 (1)SP = average compressive strength of slag
37、cement-reference cement mortar cubes at designated ages, MPa (psi),psi, andP = average compressive strength of reference cement mortar cubes at designated age, MPa (psi).psi.The reference cement-mortar strength used to calculate a slag activity index shall, when a reference cement mortar is mixed on
38、the 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 used.10.1.6 ReportThe report should include the following:10.1.6.1 Slag activity index, %,10.1.6.2 Compressive strength
39、 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,TABLE 2 Chemical RequirementsSulfide sulfur (S), max, % 2.5TABLE 3 Alkali and Strength Limits of Reference PortlandCement for Slag Activity TestsTotal Alkalies (Na2O+0.
40、658K2O) min % 0.60max % 0.90Compressive Strength, MPa, min, 28 daysA35 (5000 psi)Compressive Strength, MPa, min, 28 daysA35 5000 psiAThe 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 t
41、he flow-controlled Specification C989 mortar cubes.C989/C989M 11310.1.6.4 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 reference portland cement.10.1.7 PrecisionThe following precision statements ar
42、e applicable when the slag activity index with portland cement is basedon results of tests of two cubes from single 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
43、single-laboratory coefficient of variation has been found to be 4.1 %. Therefore, the slag activity indices ofproperly 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 h
44、as been found to be 5.7 %. Therefore, the slag activity indices of properlyconducted tests of single batches by different 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) S
45、ieveDetermine 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 deco
46、mposed by acid.10.6 Sulfide Sulfur in Slag CementDetermine in accordance with Test Methods C114.10.7 Chloride Content of SlagDetermine in accordance with Test Methods C114.10.8 Air Content of Slag Cement MortarDetermine in accordance with Test Method C185, except use 350 g of slag cementin the stand
47、ard 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 fails to conform to the requirements of this specification. Rejection shallbe reported to the producer or supplier promptly and in writing.
48、 In case of dissatisfaction with the results of the tests, the produceror supplier is not prohibited from making a claim for retesting.NOTE 8In the event of a Slag Activity Index dispute, the purchaser should request a sample of the producers reference cement for retest.12. Certification12.1When spe
49、cified in the purchase order or contract, the purchaser shall be furnished certification that samples representingeach lot have been tested as directed in this specification and the specified requirements have been met. When specified in thepurchase order or contract, a report of the test results shall be furnished.12.1 Upon request of the purchaser in the contract or order, a manufacturers report shall be furnished at the time of shipmentstating the results of tests made on samples of the material taken during production or transfer a
