ARMY UFGS-32 11 29-2009 LIME-[STABILIZED][MODIFIED] SUBGRADE《[稳定][改性]石灰路基》.pdf

1、*USACE / NAVFAC / AFCESA / NASA UFGS-32 11 29 (November 2009)-Preparing Activity: USACE SupersedingUFGS-32 11 29 (May 2009)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated October 2009*SECTION TABLE OF CONTENTSDIVISION 32 - EXTERIOR IMPROVEMENTSSECTION 32 11 29LIME-

2、STABILIZEDMODIFIED SUBGRADE11/09PART 1 GENERAL1.1 UNIT PRICES1.1.1 Measurement for Payment1.1.1.1 Lime Stabilization Modification1.1.1.2 Lime1.1.1.3 Bituminous Material1.1.2 Basis for Payment1.1.3 Waybills and Delivery Tickets1.2 REFERENCES1.3 DEFINITIONS1.3.1 Lime-StabilizedModified Course1.3.2 Deg

3、ree of Compaction1.4 SYSTEM DESCRIPTION1.4.1 Stockpiling Materials1.4.2 Plant, Equipment, Machines, and Tools1.4.2.1 General Requisites1.4.2.2 Steel-Wheeled Rollers1.4.2.3 Pneumatic-Tired Rollers1.4.2.4 Tamping-Type Roller1.4.2.5 Mechanical Spreader1.4.2.6 Pulvimixer1.4.2.7 Slurry Mixer/Distributor1

4、.4.2.8 Central Mixing Plant1.4.2.9 Sprinkling Equipment1.4.2.10 Tampers1.4.2.11 Straightedge1.5 SUBMITTALS1.6 ENVIRONMENTAL REQUIREMENTSPART 2 PRODUCTS2.1 MATERIALS2.1.1 Lime2.1.2 Bituminous Material2.1.2.1 Cutback AsphaltSECTION 32 11 29 Page 1Provided by IHSNot for ResaleNo reproduction or network

5、ing permitted without license from IHS-,-,-2.1.2.2 Emulsified Asphalt2.1.3 Material to be Stabilized Modified2.1.4 Water2.2 MIX DESIGNPART 3 EXECUTION3.1 LIME STABILIZATION MODIFICATION MIXTURE3.2 OPERATION OF BORROW PITS3.3 PREPARATION OF AREA TO BE STABILIZED MODIFIED3.3.1 In-Place Material to be

6、Stabilized Modified3.3.2 In-Place Material to Receive Stabilized Modified Course3.3.3 Grade Control3.4 INSTALLATION3.4.1 Mixed In-Place Method3.4.1.1 Scarifying and Pulverizing of Soil3.4.1.2 Application of Lime3.4.1.3 Initial Mixing3.4.1.4 Water Application and Moist Mixing3.4.1.5 Confined Areas3.4

7、.2 Edges of Stabilized Modified Course3.4.3 Central-Plant Method3.4.4 Traveling-Plant Method3.4.5 Layer Thickness3.4.6 Compaction3.4.7 Finishing3.4.8 Construction Joints3.4.9 Curing and Protection3.5 SAMPLING AND TESTING3.5.1 General Requirements3.5.2 Results3.5.3 Sampling3.5.4 Sieve Analysis3.5.5 L

8、iquid Limit and Plasticity Index3.5.6 Chemical Analysis3.6 FIELD QUALITY CONTROL3.6.1 Treatment Depth Checks3.6.2 Thickness Control3.6.3 Field Density3.6.4 Smoothness Test3.7 TRAFFIC3.8 MAINTENANCE3.9 DISPOSAL OF UNSATISFACTORY MATERIALS- End of Section Table of Contents -SECTION 32 11 29 Page 2Prov

9、ided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-*USACE / NAVFAC / AFCESA / NASA UFGS-32 11 29 (November 2009)-Preparing Activity: USACE SupersedingUFGS-32 11 29 (May 2009)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated

10、October 2009*SECTION 32 11 29LIME-STABILIZEDMODIFIED SUBGRADE11/09*NOTE: This guide specification covers the requirements for lime stabilization or modification of subgrades airfield pavements and for roads, streets, and parking areas.Edit this guide specification for project specific requirements b

11、y adding, deleting, or revising text. For bracketed items, choose applicable items(s) or insert appropriate information.Remove information and requirements not required in respective project, whether or not brackets are present.Comments and suggestions on this guide specification are welcome and sho

12、uld be directed to the technical proponent of the specification. A listing of technical proponents, including their organization designation and telephone number, is on the Internet.Recommended changes to a UFGS should be submitted as a Criteria Change Request (CCR).*PART 1 GENERAL*NOTE: The Designe

13、r should refer to UFC 3-250-11 or TM 5-822-14 for guidance on modification or stabilization of materials with lime.Sulfate reaction with either the soil to be stabilized or mixing water used in the stabilization process may be detrimental to the finished product due to the expansive nature of the su

14、lfate reaction. Soluble sulfate contents as low as 0.5% have resulted in excessive expansion of the soil due to the formation of ettringite and thaumasite. During the design phase soils and water anticipated to be included in the stabilized material should be SECTION 32 11 29 Page 3Provided by IHSNo

15、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-tested for potential to cause an adverse expansion reaction. The contractor should be required to test any off site borrow sources for sulfates.If Lime stabilization or modification is considered where sulfates are pres

16、ent, the USACE Transportation Systems Center (CENWO-ED-TX), appropriate Air Force MAJCOM pavements engineer, or Naval Facilities Engineering Service Center should be consulted for up-to-date guidance.*1.1 UNIT PRICES*NOTE: This paragraph will be deleted when lump-sum payment is desired.*1.1.1 Measur

17、ement for Payment*NOTE: Method of measurement not applicable to the job conditions will be deleted. If it is desirable for material to be paid for separately, select the desired method of measurement.*1.1.1.1 Lime Stabilization ModificationMeasurement will be by the square meter yard of work complet

18、ed and accepted.1.1.1.2 LimeMeasurement will be by the number of metric 2000 pound tons of lime used in the completed and accepted work. No measurement will be made for wasted lime or lime used in work determined defective.1.1.1.3 Bituminous MaterialBituminous material to be paid for will be measure

19、d in the number of litersgallons of the material used in the accepted work, corrected to liters at 16 degrees C gallons at 60 degrees F in accordance with ASTM D 633 ASTM D 1250. A coefficient of 0.000139 per degree C 0.00025 per degree F shall be used for asphalt emulsion. metric 2000 pound tons of

20、 the material used in the accepted work.1.1.2 Basis for Payment*NOTE: Method of measurement not applicable to the job conditions will be deleted. If it is desirable for material to be paid for separately, select the desired method of measurement.*Lime stabilization modification, constructed and acce

21、pted, including lime, bituminous material and all other materials, labor and equipment required to provide a product meeting the requirements of this SECTION 32 11 29 Page 4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-specification will be paid fo

22、r at the respective contract unit prices in the bidding schedule. No payment will be made for any material wasted, used for the convenience of the Contractor, unused or rejected, or for water used. No separate payment will be made for sanding or dusting the bituminous prime-coated surfaces, and all

23、costs for sanding or dusting shall be included in the contract unit price for bituminous material.1.1.3 Waybills and Delivery TicketsSubmit copies of waybills or delivery tickets during the progress of the work. Before the final payment is allowed, waybills and certified delivery tickets shall be fu

24、rnished for all lime and bituminous materials used in the construction.1.2 REFERENCES*NOTE: This paragraph is used to list the publications cited in the text of the guide specification. The publications are referred to in the text by basic designation only and listed in this paragraph by organizatio

25、n, designation, date, and title.Use the Reference Wizards Check Reference feature when you add a RID outside of the Sections Reference Article to automatically place the reference in the Reference Article. Also use the Reference Wizards Check Reference feature to update the issue dates.References no

26、t used in the text will automatically be deleted from this section of the project specification when you choose to reconcile references in the publish print process.*The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the

27、text by the basic designation only.AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS (AASHTO)AASHTO M 81 (1992; R 2008) Cut-Back Asphalt (Rapid-Curing Type)AASHTO M 82 (1975; R 2008) Cut-Back Asphalt (Medium-Curing Type)AASHTO T 135 (1997; R 2005) Wetting-and-Drying Test of Compacte

28、d Soil-Cement MixturesAASHTO T 136 (1997; R 2005) Freezing-and-Thawing Tests of Compacted Soil-Cement MixturesASTM INTERNATIONAL (ASTM)ASTM C 136 (2006) Standard Test Method for Sieve SECTION 32 11 29 Page 5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS

29、-,-,-Analysis of Fine and Coarse AggregatesASTM C 1602/C 1602M (2006) Standard Specification for Mixing Water Used in Production of Hydraulic Cement ConcreteASTM C 25 (2006) Standard Test Method for Chemical Analysis of Limestone, Quicklime, and Hydrated LimeASTM C 50 (2000; R 2006) Sampling, Sample

30、 Preparation, Packaging, and Marking of Lime and Limestone ProductsASTM C 977 (2003) Quicklime and Hydrated Lime for Soil StabilizationASTM D 1250 (2008) Standard Guide for Use of the Petroleum Measurement TablesASTM D 1556 (2007) Density and Unit Weight of Soil in Place by the Sand-Cone MethodASTM

31、D 1557 (2007) Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000 ft-lbf/ft3) (2700 kN-m/m3)ASTM D 1632 (2007) Making and Curing Soil-Cement Compression and Flexure Test Specimens in the LaboratoryASTM D 2027 (1997; R 2004) Cutback Asphalt (Medium-Cu

32、ring Type)ASTM D 2028 (1997; R 2004) Cutback Asphalt (Rapid-Curing Type)ASTM D 2167 (2008) Density and Unit Weight of Soil in Place by the Rubber Balloon MethodASTM D 3551 (2008) Laboratory Preparation of Soil-Lime Mixtures Using a Mechanical MixerASTM D 3740 (2008) Minimum Requirements for Agencies

33、 Engaged in the Testing and/or Inspection of Soil and Rock as Used in Engineering Design and ConstructionASTM D 422 (1963; R 2007) Particle-Size Analysis of SoilsASTM D 4318 (2005) Liquid Limit, Plastic Limit, and Plasticity Index of SoilsASTM D 5102 (2004) Standard Test Method for Unconfined Compre

34、ssive Strength of Compacted Soil-Lime MixturesSECTION 32 11 29 Page 6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASTM D 559 (2003) Wetting and Drying Compacted Soil-Cement MixturesASTM D 560 (2003) Freezing and Thawing Compacted Soil-Cement Mixtu

35、resASTM D 633 (1997; R 2005) Volume Correction Table for Road TarASTM D 6938 (2007a) Standard Test Method for In-Place Density and Water Content of Soil and Soil-Aggregate by Nuclear Methods (Shallow Depth)ASTM D 75/D 75M (2009) Standard Practice for Sampling AggregatesASTM D 977 (2005) Emulsified A

36、sphaltASTM E 11 (2009) Wire Cloth and Sieves for Testing Purposes1.3 DEFINITIONS1.3.1 Lime-StabilizedModified CourseLime-stabilizedmodified course, as used in this specification, is a mixture of lime and in-place or borrow material uniformly blended, wetted, and thoroughly compacted to produce a pav

37、ement course which meets the criteria set forth in the plans and this specification.1.3.2 Degree of CompactionDegree of compaction required is expressed as a percentage of the maximum density obtained by the test procedure presented in ASTM D 1557abbreviated as percent laboratory maximum density.1.4

38、 SYSTEM DESCRIPTIONThe work specified consists of the construction of a lime-stabilizedmodified subgrade course. Perform the work in accordance with this specification conforming to the lines, grades, notes, and typical sections shown in the drawings. Select sources of materials well in advance of t

39、he time when materials will be required in the work.1.4.1 Stockpiling MaterialsStockpile borrow material, including approved material available from excavation and grading, in the manner and at the locations designated. Before stockpiling material, storage sites shall be cleared and sloped to drain.

40、 Stockpile separately materials obtained from different sources.1.4.2 Plant, Equipment, Machines, and Tools*NOTE: Types of equipment specified but not required for the work will be deleted, and other items of equipment not listed will be added as appropriate.*SECTION 32 11 29 Page 7Provided by IHSNo

41、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-1.4.2.1 General RequisitesPlant, equipment, machines, and tools used in the work shall be subject to approval and maintained in satisfactory working condition at all times. Other compacting equipment may be used in lieu

42、 of that specified, where it can be demonstrated that the results are equivalent. Provide protective equipment, apparel, and barriers to protect the eyes, respiratory system, and the skin of workers exposed to contact with lime dust or slurry.1.4.2.2 Steel-Wheeled RollersSteel wheeled rollers shall

43、be the self propelled type. Unless otherwise provided, non-vibratory steel-wheel rollers shall be of the tandem or 3-wheel self-propelled type or steel-wheel trailer type weighing not less than 4.5 metric tons 5 tons. When drive rolls or trailer type rolls produce a compressive force of not less tha

44、n 3.6 kg/mm 200 pounds per linear inch of contact area, a roller weighing less than 4.5 metric tons 5 tons may be used. Equip wheels of the rollers with adjustable scrapers. The use of vibratory rollers is optional.1.4.2.3 Pneumatic-Tired RollersPneumatic-tired rollers shall have 4 or more tires, inflated to a minimum pressu