1、*USACE / NAVFAC / AFCESA / NASA UFGS-32 11 33 (August 2008)-Preparing Activity: NAVFAC SupersedingUFGS-32 11 33 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated July 2008*SECTION TABLE OF CONTENTSDIVISION 32 - EXTERIOR IMPROVEMENTSSECTION 32 11 33CEMENT
2、STABILIZED BASESUBBASE COURSE AT AIRFIELDS AND ROADS08/08PART 1 GENERAL1.1 REFERENCES1.2 SUBMITTALS1.3 DELIVERY AND STORAGE1.3.1 Cement1.3.2 Aggregates1.3.3 Curing Materials1.4 ENVIRONMENTAL CONDITIONS1.5 QUALITY ASSURANCE1.5.1 Required DataPART 2 PRODUCTS2.1 CEMENT2.2 AGGREGATE MATERIALS2.2.1 Subba
3、se Aggregate2.2.2 Base Course Aggregate2.2.2.1 Flexible Pavement Base Course2.2.2.2 Rigid Pavement Base Course2.2.2.3 Gradation of Aggregate2.3 WATER2.4 CEMENT-TREATED BASE SUBBASE2.4.1 Compressive Strength2.4.2 Cement Content2.4.3 Weight Loss of Specimens2.5 MIX DESIGN2.6 CURING MATERIALS2.6.1 Bitu
4、minous Material2.6.1.1 Liquid Asphalt2.6.1.2 Emulsified Asphalt2.6.2 Burlap2.6.3 Polyethylene Sheeting2.6.4 Polyethylene-Coated Burlap2.6.5 Waterproof PaperSECTION 32 11 33 Page 1Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHSPART 3 EXECUTION3.1 SITE PRE
5、PARATION3.1.1 Cleaning and Grading3.1.2 Grade Control3.1.3 Operation of Government Borrow Pits3.2 MIXING AND PLACING3.2.1 Mixing3.2.2 Plant Mix Materials3.2.3 Placing3.2.4 Compaction3.3 FINISHING3.3.1 Finishing3.3.2 Edges of Stabilized Course3.3.3 Thickness Control3.3.4 Construction Joints3.4 CURING
6、 AND PROTECTION3.4.1 Curing, Protection and Cover3.4.2 Bituminous Material3.4.3 Burlap or Cotton Mats3.4.4 Waterproof Paper, Blankets, or Impermeable Sheets3.4.5 Moist Curing3.5 MAINTENANCE AND TRAFFIC CONTROL3.5.1 Maintenance3.5.2 Traffic Control3.6 SAFETY REQUIREMENTS3.6.1 Additional Safety Requir
7、ements for Cutback Asphalts3.7 FIELD SAMPLING AND TESTING3.7.1 Sampling3.7.1.1 Aggregates at Source3.7.1.2 Cement-Treated Materials3.7.1.3 Sample Identification3.7.2 Testing3.7.2.1 Aggregate Testing3.7.2.2 Compressive Tests3.7.2.3 Smoothness Test3.7.2.4 Thickness Test3.7.2.5 Field Density Tests3.7.2
8、.6 Laboratory Test- End of Section Table of Contents -SECTION 32 11 33 Page 2Provided by IHSNot for Resale-,-,-*USACE / NAVFAC / AFCESA / NASA UFGS-32 11 33 (August 2008)-Preparing Activity: NAVFAC SupersedingUFGS-32 11 33 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreemen
9、t with UMRL dated July 2008*SECTION 32 11 33CEMENT STABILIZED BASESUBBASE COURSE AT AIRFIELDS AND ROADS08/08*NOTE: This guide specification covers the requirements for portland cement-stabilized base or subbase for airfields, roads and streets.Edit this guide specification for project specific requi
10、rements by 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 welcom
11、e and should 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).*NOTE: The following inf
12、ormation should be shown on the project drawings:1. Location, type and thickness of base and subbase materials.2. Location of on-site aggregate sources when applicable.*PART 1 GENERAL1.1 REFERENCES*NOTE: This paragraph is used to list the publications cited in the text of the guide SECTION 32 11 33
13、Page 3Provided by IHSNot for Resale-,-,-specification. The publications are referred to in the text by basic designation only and listed in this paragraph by organization, designation, date, and title.Use the Reference Wizards Check Reference feature when you add a RID outside of the Sections Refere
14、nce Article to automatically place the reference in the Reference Article. Also use the Reference Wizards Check Reference feature to update the issue dates.References not used in the text will automatically be deleted from this section of the project specification when you choose to reconcile refere
15、nces 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 text by the basic designation only.AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS (AASHTO)AASHTO M 140 (2003) E
16、mulsified AsphaltAASHTO M 208 (2001; R 2005) Cationic Emulsified AsphaltAASHTO M 81 (1992; R 2004) Cut-Back Asphalt (Rapid-Curing Type)AASHTO M 82 (1975; R 2004) Cut-Back Asphalt (Medium-Curing Type)ASTM INTERNATIONAL (ASTM)ASTM C 117 (2004) Standard Test Method for Materials Finer than 75-um (No. 2
17、00) Sieve in Mineral Aggregates by WashingASTM C 131 (2006)Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles MachineASTM C 136 (2006) Standard Test Method for Sieve Analysis of Fine and Coarse AggregatesASTM C 150 (2007) Stand
18、ard Specification for Portland CementASTM C 171 (2007) Standard Specification for Sheet Materials for Curing ConcreteASTM C 29/C 29M (2007) Standard Test Method for Bulk Density (“Unit Weight“) and Voids in AggregateSECTION 32 11 33 Page 4Provided by IHSNot for ResaleNo reproduction or networking pe
19、rmitted without license from IHSASTM C 595 (2008) Standard Specification for Blended Hydraulic CementsASTM D 1140 (2000; R 2006) Amount of Material in Soils Finer than the No. 200 (75-micrometer) SieveASTM D 1556 (2007) Density and Unit Weight of Soil in Place by the Sand-Cone MethodASTM D 1557 (200
20、7) 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 1633 (2000; R 2007) Compressive Strength of Molded Soil-C
21、ement CylindersASTM D 2027 (1997; R 2004) Cutback Asphalt (Medium-Curing Type)ASTM D 2028 (1997; R 2004) Cutback Asphalt (Rapid-Curing Type)ASTM D 2487 (2006) Soils for Engineering Purposes (Unified Soil Classification System)ASTM D 2922 (2005) Density of Soil and Soil-Aggregate in Place by Nuclear
22、Methods (Shallow Depth)ASTM D 3017 (2005) Water Content of Soil and Rock in Place by Nuclear Methods (Shallow Depth)ASTM D 420 (1998; R 2003) Site Characterization for Engineering Design, and Construction PurposesASTM D 4318 (2005) Liquid Limit, Plastic Limit, and Plasticity Index of SoilsASTM D 558
23、 (2004) Moisture-Density (Unit Weight) Relations of Soil-Cement MixturesASTM D 559 (2003) Wetting and Drying Compacted Soil-Cement MixturesASTM D 560 (2003) Freezing and Thawing Compacted Soil-Cement MixturesASTM D 75 (2003) Standard Practice for Sampling AggregatesASTM D 977 (2005) Emulsified Aspha
24、ltSECTION 32 11 33 Page 5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHSNATIONAL INSTITUTE FOR OCCUPATIONAL SAFETY AND HEALTH (NIOSH)NIOSH 81-123 (1981) Occupational Health Guideline for Chemical Hazards, (Vols. 1, 2, and 3)U.S. GENERAL SERVICES ADMINIST
25、RATION (GSA)FS CCC-C-467 (Rev C) Cloth, Burlap, Jute (or Kenaf)1.2 SUBMITTALS*NOTE: Review submittal description (SD) definitions in Section 01 33 00 SUBMITTAL PROCEDURES and edit the following list to reflect only the submittals required for the project. Submittals should be kept to the minimum req
26、uired for adequate quality control.A “G” following a submittal item indicates that the submittal requires Government approval. Some submittals are already marked with a “G”. Only delete an existing “G” if the submittal item is not complex and can be reviewed through the Contractors Quality Control s
27、ystem. Only add a “G” if the submittal is sufficiently important or complex in context of the project.For submittals requiring Government approval on Army projects, a code of up to three characters within the submittal tags may be used following the “G“ designation to indicate the approving authorit
28、y. Codes for Army projects using the Resident Management System (RMS) are: “AE“ for Architect-Engineer; “DO“ for District Office (Engineering Division or other organization in the District Office); “AO“ for Area Office; “RO“ for Resident Office; and “PO“ for Project Office. Codes following the “G“ t
29、ypically are not used for Navy, Air Force, and NASA projects.Choose the first bracketed item for Navy, Air Force and NASA projects, or choose the second bracketed item for Army projects.*Government approval is required for submittals with a “G“ designation; submittals not having a “G“ designation ar
30、e for Contractor Quality Control approval.for information only. When used, a designation following the “G“ designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:SD-04 Samples Subb
31、ase aggregate Base course aggregate Flexible pavement base courseSECTION 32 11 33 Page 6Provided by IHSNot for Resale-,-,- Rigid pavement base courseSubmit duplicate samples of material to be subjected to field testing, as required in paragraph entitled “Field Sampling and Testing.“ Select the sourc
32、e(s) and provide sample of the aggregate listed above before the materials are required for mix design. Submit duplicate samples for approval at least 30 days prior to start of work. Do not use aggregate prior to receiving written approval of the samples. Investigate new sources in accordance with A
33、STM D 420. Take samples from pits, borrow areas, stockpiles or other locations in conformance with ASTM D 75 and test. For determining optimum moisture content and maximum density, samples of the blended mixture(s) shall be representative of the processing area before addition of cement.*NOTE: Selec
34、t the type of base or subbase for the required construction: airfields, roads, and streets.*SD-05 Design Data*NOTE: Specify at least 28 days for approval of mix designs. Identify the type of stabilized course.*NOTE: In wet-dry and freeze-thaw conditions, cement may be added to the above composite ma
35、terials to obtain stability and load-carrying capacity as measured by the compressive strength, however:(1) If high quality granular materials are not available, the use of substandard materials fully stabilized with cement is acceptable. For such materials, the amount of cement should be determined
36、 by ASTM test methods of wetting-and-drying, and/or freezing-and-thawing. Marginal materials having high plasticity or otherwise undesirable characteristics, should be carefully evaluated based on a percent weight loss not to exceed 14 percent as determined by ASTM D 559 or ASTM D 560. Gradations sh
37、all be limited to not more than 45 percent of the material should be retained on the 4.75 mm No. 4 sieve, and the maximum size of materials limited to 25 or 19 mm one or 3/4 inch.(2) If the soil and aggregate mixture meet the requirements of the gradations given, the use of the test procedures in ac
38、cordance with ASTM D 559 and ASTM D 560 may be waived and the required amount of cement may be determined on the basis of compressive strength. Maximum size of material for base course is usually limited to 38 mm 1 1/2 inches, with between 30 and 45 percent retained on the 4.75 mm No. 4 sieve. When
39、freezing-and-thawing or SECTION 32 11 33 Page 7Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHSwetting-and-drying does not occur in a specific location, the freeze-thaw test is valuable in that the test will indicate the internal structural weakness of th
40、e soil-cement-aggregate mixture, which otherwise appears more slowly under natural-occurring temperature or moisture fluctuations above the freezing point. The freeze-thaw and wet-dry tests determine the minimum cement content required to produce a structural material that will resist damage due to
41、volume changes and are not meant to simulate specific climate environments.(3) NOTE FOR TABLE I: Use Table I and Gradation (1) as a requirement of import materials for airfield or major road or street applications. For non-critical applications, design an applicable gradation (2) dependent upon the
42、availability of local materials, or delete Table 1 in its entirety.*Mix designJob-mix formulaSubmit a contractor-furnished mix design thirty _ days prior to commencement of work. After receiving approval of the mix design, submit a job-mix formula.SD-06 Test Reports*NOTE: Specify test reports for so
43、il-cement loss if such tests are required at paragraph entitled “Weight Loss of Specimens.“*Aggregate plasticity indexSieve analysis of aggregateCompressive strength Soil-cement weight loss Aggregate percentage of wear Existing soil moisture-densityLiquid limit of aggregatesPlasticity index of aggre
44、gatesSieve analysis of combined materialCompressive strength of soil aggregate materialOptimum moisture content and maximum densitySECTION 32 11 33 Page 8Provided by IHSNot for Resale-,-,-Submit results of ASTM C 136 sieve analysis and ASTM D 1633compressive strength testing.SD-07 CertificatesPortland cementLocation of aggregate
