ASTM C977-2003 Standard Specification for Quicklime and Hydrated Lime for Soil Stabilization《土壤保持稳定用生石灰和熟石灰的标准规范》.pdf

1、Designation: C 977 03Standard Specification forQuicklime and Hydrated Lime for Soil Stabilization1This standard is issued under the fixed designation C 977; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.

2、 A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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. Scope1.1 This specification pertains to quicklime and hydra

3、tedlime, either high calcium, dolomitic, or magnesian lime, for usein stabilization of soils (See Note 2).NOTE 1Quicklime and hydrated lime act upon clay soils and mayrender such soils suitable for highway construction and for other load-bearing applications. In most cases, lime causes finely divide

4、d clayparticles to agglomerate into coarser particles which improves load-bearing properties and subsequently the lime-treated soil hardens bychemical reaction.NOTE 2No attempt is made to present requirements for by-productlime, commercial lime slurry, etc. Specification requirements for thesemateri

5、als could be better determined on a local basis.1.2 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of reg

6、ulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:C 25 Test Methods for Chemical Analysis of Limestone,Quicklime, and Hydrated Lime2C 50 Practice for Sampling, Sample Preparation, Packag-ing, and Marking of Lime and Limestone Products2C 51 Terminology Relating to Lime and Li

7、mestone (asUsed by the Industry)2C 110 Test Methods for Physical Testing of Quicklime,Hydrated Lime, and Limestone2D 6276 Test Method for Using pH to Estimate the Soil-Lime Proportion Requirement for Soil Stabilization33. Chemical Composition3.1 Unless otherwise specified, for definitions of terms u

8、sedin this specification, refer to Terminology C 51.3.2 Quicklime and hydrated lime for soil stabilization shallconform to the following chemical composition:Calcium and Magnesium Oxides (on a non-volatile basis,minimum %)90.0Carbon Dioxide (taken at point of manufacture, maximum %) 5.0Free Moisture

9、 (taken at point of manufacture, maximum %) 2.04. Physical Properties4.1 Hydrated Lime, shall have not more than 3 % retainedon a No. 30 (590-m) sieve and not more than 25 % retainedon a No. 200 (75-m) sieve.4.2 Quicklime:4.2.1 Particle Size of QuicklimeQuicklime shall all pass a1.0-in. (24.4-mm) si

10、eve.4.2.2 Quicklime for soil stabilization shall have a tempera-ture rise of a minimum of 30C in 20 min as measured by TestMethods C 110.4.2.3 Residue of QuicklimeQuicklime for soil stabiliza-tion shall have not more than 10 % residue as measured by TestMethods C 110.5. Field Applications5.1 When qu

11、icklimes are used, ensure that thorough mixingof the lime and soil is accomplished and all lime pebbles havebeen hydrated with additional water and distributed uniformlythroughout the soil. There shall be no lime pebbles presentbefore the compaction operation starts. Check by turning soilwith a spad

12、e at representative intervals and inspect for visiblelime pebbles. Care should be exercised on initial dry applica-tions to minimize environmental dusting.5.2 For hydrated limes, additional water shall be added tothe lime-soil mixture to facilitate mixing and uniform distri-bution of the hydrated li

13、me in the soil layer. There shall be nolime clumps present before the compaction operation starts.Check by turning soil with a spade at representative intervalsand inspect for visible lime clumps. Care should be exercisedon initial dry applications to minimize environmental dusting.41This specificat

14、ion is under the jurisdiction of ASTM Committee C07 on Limeand is the direct responsibility of Subcommittee C07.03 on Industrial Uses.Current edition approved May 10, 2003. Published July 2003. Originallyapproved in 1983. Last previous edition approved in 2002 as C 977 02.2Annual Book of ASTM Standa

15、rds, Vol 04.01.3Annual Book of ASTM Standards, Vol 04.09.4Further information on soil stabilization construction technique is availablefrom National Lime Association Bulletin No. 326, 200 N. Glebe Rd., Arlington, VA,222033728. This information can be accessed online at www.lime.org.1Copyright ASTM I

16、nternational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6. Test Method6.1 The chemical analysis of quicklime and hydrated limeshall be conducted in accordance with Test Methods C 25.6.2 The particle size of hydrated lime shall be determined inaccordance with

17、 the sieve analysis of hydrated lime in TestMethods C 110.6.3 The appendix of this specification contains a non-mandatory test to approximate the lime-soil proportion forstabilization. A more detailed version of this test appears inTest Method D 6276.7. Sampling, Inspection, Packaging, and Marking7.

18、1 The sampling, inspection, rejection, retesting, packag-ing, and marking shall be done in accordance with PracticeC 50.8. Keywords8.1 highway construction; hydrated lime; lime treated soils;load-bearing; quicklime; soil; stabilizationAPPENDIX(Nonmandatory Information)X1. EADES AND GRIM TEST METHOD

19、FORDETERMINING THE APPROXIMATE LIME/SOIL PROPORTION FOR STABILIZATIONX1.1 This test method usually provides a lime-soil propor-tion for stabilization. It gives an indication whether the soil inquestion can be stabilized. For most stabilization work, theresults of this test should be verified by perf

20、ormance tests in asoil laboratory.X1.2 Air dry a sufficient quantity of the soil to be tested andscreen through a No. 40 (425-m) sieve. Store in a closedcontainer to maintain uniform moisture. Weigh to the nearest0.1 g a series of 20-g samples of soil and place in separate150-mL plastic containers w

21、ith water-tight lids.X1.3 In the case of quicklime, rapidly crush the lime to passa No. 6 (3.35-mm) sieve.X1.4 Weigh, to the nearest 0.01 g, a series of quantities oflime equivalent to 2, 3, 4, 5, and 6 % of the soil sample.X1.5 Add the lime quantity to the soil sample, mark thecontainer with the ap

22、propriate percentage, and mix the drycontents thoroughly.X1.6 Add the 100 mL of 70F carbon dioxide-free distilledwater or, if possible, 70F actual water to be used on the job toeach container of soil and lime. Seal with screw-cap lid andmix the three components by shaking the bottles. Shake eachbott

23、le for 30 s every ten min for 1 h. After 1 h, shake vigorouslyand transfer part of the slurry into a beaker. Measure the pHwith a low-sodium error glass electrode (previously standard-ized to pH 12.45 with an agitated calcium hydroxide slurry).Record the pH reading for each mixture.X1.7 If the pH re

24、adings are 12.40 or higher, the lowestpercentage that gives a pH of 12.40 is the % required tostabilize the soil. If the pH readings do not go beyond pH of12.30 and two percentages give this reading, the lowest % togive a pH of 12.30 is the % required to stabilize the soil. If thehighest pH reading

25、is a pH of 12.30 and only the highestpercentage lime used gives a pH of 12.30, additional testing isrequired using higher percentages of lime.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of thi

26、s 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 subject to revision at any time by the responsible technical committee and must be reviewed every five yea

27、rs 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 Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical commit

28、tee, 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 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).C977032