1、*USACE / NAVFAC / AFCESA / NASA UFGS-32 11 26.16 (April 2006)-Preparing Activity: NAVFAC Replacing without changeUFGS-02711 (August 2004)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated July 2008*SECTION TABLE OF CONTENTSDIVISION 32 - EXTERIOR IMPROVEMENTSSECTION 32
2、 11 26.16BITUMINOUS CONCRETE BASE COURSE04/06PART 1 GENERAL1.1 REFERENCES1.2 SUBMITTALS1.3 QUALITY ASSURANCE1.3.1 Safety Requirements1.4 DELIVERY AND STORAGE1.5 ENVIRONMENTAL CONDITIONS1.6 CONSTRUCTION EQUIPMENT1.6.1 Mixing Plant1.6.1.1 Plant Screens for Batch and Continuous Mix Plants1.6.1.2 Bins1.
3、6.1.3 Dust Control1.6.2 Paving Equipment1.6.2.1 Spreading Equipment1.6.2.2 Rolling Equipment1.6.2.3 Hand Tampers1.6.2.4 Mechanical Hand TampersPART 2 PRODUCTS2.1 MATERIALS2.1.1 Aggregates2.1.1.1 Coarse Aggregates2.1.1.2 Fine Aggregate2.1.1.3 Mineral Filler2.1.2 Asphalt Cement2.1.3 Composition of Mix
4、tures2.1.4 VariationsPART 3 EXECUTION3.1 MIXING3.2 TRANSPORTATION OF BITUMINOUS MIXTURES3.3 PLACING3.4 JOINTSSECTION 32 11 26.16 Page 1Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.4.1 Transverse3.4.2 Longitudinal3.5 COMPACTION OF MIXTURE3.6 FIEL
5、D SAMPLING AND TESTING3.6.1 Sampling3.6.1.1 Aggregates at Source3.6.1.2 Cold Feed Aggregate Sampling3.6.1.3 Coarse and Fine Aggregates3.6.1.4 Mineral Filler3.6.1.5 Pavement and Mixture3.6.1.6 Sample Identification3.6.2 Testing3.6.2.1 Aggregate3.6.2.2 Bituminous Mix3.6.2.3 Pavement Course- End of Sec
6、tion Table of Contents -SECTION 32 11 26.16 Page 2Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-*USACE / NAVFAC / AFCESA / NASA UFGS-32 11 26.16 (April 2006)-Preparing Activity: NAVFAC Replacing without changeUFGS-02711 (August 2004)UNIFIED FACILIT
7、IES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated July 2008*SECTION 32 11 26.16BITUMINOUS CONCRETE BASE COURSE04/06*NOTE: This guide specification covers the requirements for bituminous base course (central plant hot mix).Edit this guide specification for project specific requireme
8、nts 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 welcome an
9、d 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).*PART 1 GENERAL1.1 REFERENCE
10、S*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 organization, designation, date, and title.Use the Reference Wizards Check Reference feature wh
11、en 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.SECTION 32 11 26.16 Page 3Provided by IHSNot for ResaleNo reproduction or networking permitted wi
12、thout license from IHS-,-,-References not 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
13、publications are referred to within the text by the basic designation only.AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS (AASHTO)AASHTO T 102 (1983; R 2004) Spot Test of Asphaltic MaterialsAASHTO T 182 (1984; R 2002) Coating and Stripping of Bitumen-Aggregate MixturesASTM INTERN
14、ATIONAL (ASTM)ASTM 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 183 (2002) Standard Practice for Sampling an
15、d the Amount of Testing of Hydraulic CementASTM D 1073 (2007) Fine Aggregate for Bituminous Paving MixturesASTM D 1188 (2007) Bulk Specific Gravity and Density of Compacted Bituminous Mixtures Using Paraffin-Coated SpecimensASTM D 1559 (1989) Resistance to Plastic Flow of Bituminous Mixtures Using M
16、arshall ApparatusASTM D 2172 (2005) Quantitative Extraction of Bitumen from Bituminous Paving MixturesASTM D 242 (2004) Mineral Filler for Bituminous Paving MixturesASTM D 2726 (2005a) Bulk Specific Gravity and Density of Non-Absorptive Compacted Bituminous MixturesASTM D 3381 (2005) Viscosity-Grade
17、d Asphalt Cement for Use in Pavement ConstructionASTM D 546 (2005) Sieve Analysis of Mineral Filler for Bituminous Paving MixturesSECTION 32 11 26.16 Page 4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASTM D 692 (2000; R 2004) Coarse Aggregate for
18、 Bituminous Paving MixturesASTM D 75 (2003) Standard Practice for Sampling AggregatesASTM D 946 (1982; R 2005) Penetration-Graded Asphalt Cement for Use in Pavement ConstructionASTM D 979 (2001; R 2006e1) Sampling Bituminous Paving MixturesASTM D 995 (1995b; R 2002) Mixing Plants for Hot-Mixed, Hot-
19、Laid Bituminous Paving Mixtures1.2 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 required for adequate quality contr
20、ol.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 system. Only add a “G” if the sub
21、mittal 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 authority. Codes for Army projects using
22、 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“ typically are not used for Navy,
23、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 are for Contractor Quality Control
24、 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:SECTION 32 11 26.16 Page 5Provided by IHSNot for R
25、esaleNo reproduction or networking permitted without license from IHS-,-,-SD-05 Design DataBituminous material job-mix formulaSubmit a job-mix formula prior to preparing and placing bituminous mixture. Formula shall indicate definite percentage of each sieve fraction, percentage of bitumen, percenta
26、ge of each aggregate, temperature of mixture leaving mixer, number of blows of compaction per side of molded specimen, stability, flow, percent of voids total mix, percent of voids in mineral aggregate, and temperature/viscosity relationship of asphalt cement.SD-06 Test ReportsAbrasion test reports
27、on aggregateStripping test reports on aggregateBituminous mix test reportsDensity test reportsThickness test reportsSmoothness test reports1.3 QUALITY ASSURANCE1.3.1 Safety RequirementsProvide adequate and safe stairways with handrails to mixer platform and safe and protected ladders or other means
28、for accessibility to plant operations. Guard equipment and exposed steam or other high temperature lines which endanger personnel or create a fire hazard or cover with a suitable type of insulation. Provide hearing protection to Contractor employees and roller and spreader operators in vicinity of e
29、quipment which may emit hazardous noise levels.1.4 DELIVERY AND STORAGEInspect materials delivered to the site for damage and store to prevent segregation.1.5 ENVIRONMENTAL CONDITIONSConstruct bituminous courses when underlaying course is dry and do not construct when atmospheric temperature is belo
30、w 4 degrees C 40 degrees F.1.6 CONSTRUCTION EQUIPMENTCalibrated equipment, such as asphalt distributors, scales, batching equipment, spreaders and similar equipment, shall have been recalibrated by an approved calibration laboratory within 6 _ months of commencing work.1.6.1 Mixing Plant*SECTION 32
31、11 26.16 Page 6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTE: Insert the minimum acceptable capacity.*Design, coordinate, and operate mixing plant to produce a mixture within job-mix formula tolerances. The mixing plant shall meet requirements
32、 of ASTM D 995, except as specified otherwise herein. The plant shall be a batch type, continuous mixing type, or drum dryer-mixer type with a minimum capacity of 100 metric tons 100 _ tons per hour. Mixing plant and equipment shall remain accessible at all times for checking its adequacy, inspectin
33、g its operation, verifying weights, proportions, character of materials, and checking mixture temperatures. The plant and plant size shall meet the requirements of Section 01 57 19.00 20 TEMPORARY ENVIRONMENTAL CONTROLS.1.6.1.1 Plant Screens for Batch and Continuous Mix PlantsUse screens to obtain a
34、ccurate gradation. Allow no bin to contain more than 10 percent oversize or undersize. Inspect screens each day prior to commencing work for plugged, worn or broken screens. Clean plugged screens and replace worn or broken screens with new screens prior to beginning operations.1.6.1.2 BinsDivide bin
35、s into at least three compartments arranged to insure separate and adequate storage of appropriate fractions of aggregate.1.6.1.3 Dust ControlEquip plant with a dust collector designed to waste or return in a constant flow all or part of the material collected. Recover quantity as necessary to provi
36、de and maintain composition specified. Plant shall have a mixer cover and such additional housing to insure proper control of dust.1.6.2 Paving Equipment1.6.2.1 Spreading EquipmentSelf-propelled electronically controlled type, unless other equipment is authorized by the Contracting Officer. Equip sp
37、reading equipment of the self-propelled electronically controlled type with hoppers, tamping or vibrating devices, distributing screws, electronically adjustable screeds, and equalizing devices. Capable of spreading hot bituminous mixtures without tearing, shoving, or gouging and to produce a finish
38、ed surface of specified grade and smoothness. Operate spreaders, when laying mixture, at variable speeds between 0.025 and 0.23 meter per second 5 and 45 feet per minute. Design spreader with a quick and efficient steering device; a forward and reverse traveling speed; and automatic devices to adjus
39、t to grade and confine the edges of the mixture to true lines. The use of a spreader that leaves indented areas or other objectionable irregularities in the fresh laid mix during operations will not be permitted.1.6.2.2 Rolling EquipmentSelf-propelled pneumatic-tired rollers supplemented by three-wh
40、eel and tandem type steel wheel rollers. The number, type and weight of rollers shall be sufficient to compact the mixture to the required density without detrimentally affecting the compacted material. All rollers shall be suitable for rolling hot-mix bituminous pavements and capable of reversing S
41、ECTION 32 11 26.16 Page 7Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-without backlash. Pneumatic-tired rollers shall be capable of being operated both forward and backward without turning on the mat, and without loosening the surface being rolled
42、. Equip rollers with suitable devices and apparatus to keep the rolling surfaces wet and prevent adherence of bituminous mixture.a. Vibratory Rollers: At the Contractors option, vibratory rollers especially designed for bituminous concrete compaction may be used provided rollers do not impair stabil
43、ity of pavement structure and any underlying layers. Repair depressions in pavement surfaces resulting from use of vibratory rollers at no cost to the Government. Rollers shall be self-propelled, single or dual vibrating drums, and steel drive wheels, as applicable; equipped with variable amplitude
44、and separate controls for energy and propulsion.1.6.2.3 Hand TampersHand tampers shall weigh not less than 10 kilograms 25 pounds and have a tamping face of not more than 0.03 square meter 50 square inches.1.6.2.4 Mechanical Hand TampersCommercial type, operated by pneumatic pressure or by internal
45、combustion.PART 2 PRODUCTS2.1 MATERIALS2.1.1 AggregatesGrade and proportion aggregates and filler such that combined mineral aggregate conforms to grading specified herein.2.1.1.1 Coarse Aggregates*NOTE: Select slag weight of 1120 kilograms per cubic meter 70 pounds per cubic foot for base courses of airfield pavements.*NOTE: Whe
