1、*USACE / NAVFAC / AFCESA / NASA UFGS-32 11 23 (August 2008)-Preparing Activity: USACE SupersedingUFGS-32 11 23 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated July 2008*SECTION TABLE OF CONTENTSDIVISION 32 - EXTERIOR IMPROVEMENTSSECTION 32 11 23AGGREGAT
2、E AND/OR GRADED-CRUSHED AGGREGATE BASE COURSE08/08PART 1 GENERAL1.1 UNIT PRICES1.1.1 Measurement1.1.1.1 Area1.1.1.2 Volume1.1.1.3 Weight1.1.2 Payment for Quantities1.1.3 Payment for Stabilization of Underlying Course1.1.4 Waybills and Delivery Tickets1.2 REFERENCES1.3 DEFINITIONS1.3.1 Aggregate Base
3、 Course1.3.2 Graded-Crushed Aggregate Base Course1.3.3 Degree of Compaction1.4 SYSTEM DESCRIPTION1.5 SUBMITTALS1.6 QUALITY ASSURANCE1.6.1 Sampling1.6.2 Tests1.6.2.1 Sieve Analysis1.6.2.2 Liquid Limit and Plasticity Index1.6.2.3 Moisture-Density Determinations1.6.2.4 Field Density Tests1.6.2.5 Wear T
4、est1.6.2.6 Soundness1.6.2.7 Weight of Slag1.6.3 Testing Frequency1.6.3.1 Initial Tests1.6.3.2 In Place Tests1.6.4 Approval of Material1.7 ENVIROMENTAL REQUIREMENTSPART 2 PRODUCTS2.1 AGGREGATESSECTION 32 11 23 Page 1Provided by IHSNot for ResaleNo reproduction or networking permitted without license
5、from IHS-,-,-2.1.1 Coarse Aggregate2.1.1.1 Aggregate Base Course2.1.1.2 Graded-Crushed Aggregate Base Course2.1.2 Fine Aggregate2.1.2.1 Aggregate Base Course2.1.2.2 Graded-Crushed Aggregate Base Course2.1.3 Gradation Requirements2.2 LIQUID LIMIT AND PLASTICITY INDEXPART 3 EXECUTION3.1 GENERAL REQUIR
6、EMENTS3.2 OPERATION OF AGGREGATE SOURCES3.3 STOCKPILING MATERIAL3.4 PREPARATION OF UNDERLYING COURSE3.5 INSTALLATION3.5.1 Mixing the Materials3.5.2 Placing3.5.3 Grade Control3.5.4 Edges of Base Course3.5.5 Compaction3.5.6 Thickness3.5.7 Proof Rolling3.5.8 Finishing3.5.9 Smoothness3.6 TRAFFIC3.7 MAIN
7、TENANCE3.8 DISPOSAL OF UNSATISFACTORY MATERIALS- End of Section Table of Contents -SECTION 32 11 23 Page 2Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-*USACE / NAVFAC / AFCESA / NASA UFGS-32 11 23 (August 2008)-Preparing Activity: USACE Supersedin
8、gUFGS-32 11 23 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated July 2008*SECTION 32 11 23AGGREGATE AND/OR GRADED-CRUSHED AGGREGATE BASE COURSE08/08*NOTE: This guide specification covers the requirements for base course to be used directly under bitumino
9、us pavement courses.Edit this guide specification for project specific requirements 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
10、 are present.Comments and suggestions on this guide specification are welcome 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 sho
11、uld be submitted as a Criteria Change Request (CCR).Use of electronic communication is encouraged.*PART 1 GENERAL*NOTE: This guide specification is applicable to base courses placed directly beneath bituminous surface courses. The following must be taken into consideration when editing this specific
12、ation.a. The material in this specification and on the drawings should be referred to as “aggregate base course (ABC)“ whenever a base course material with a California Bearing Ratio (CBR) of 80 is required. “Aggregate Base Course“ should be retained in the title and the rest of the specification sh
13、ould be edited accordingly to retain the information SECTION 32 11 23 Page 3Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-necessary for this material.b. The material in this specification and on the drawings should be referred to as “graded-crushed
14、 aggregate base course (GCA)“ wherever a base material with a CBR of 100 is required. “Graded-Crushed Aggregate Base Course“ should be retained in the title and the rest of the specification should be edited accordingly to retain the information necessary for this material.c. When this specification
15、 is to be used in projects that require both types of materials, the title of this specification should be “Aggregate and/or Graded-Crushed Aggregate Base Course“. Care must then be taken to assure that the drawings clearly call out which material is being used in any particular place and that this
16、specification is edited to retain the information for both types of materials. If only a small amount of one of these types of materials is needed for the project, consideration should be made to determine if only one of these materials should be specified and the design adjusted.*1.1 UNIT PRICES*NO
17、TE: Delete unit price paragraphs when the work is covered by a lump-sum contract price.*1.1.1 Measurement*NOTE: Delete the method of measurement paragraph not applicable to job conditions. The provision for stockpiling should be retained or deleted, as applicable, and the brackets will be removed.*1
18、.1.1.1 AreaMeasure the quantity of ABC and GCA completed and accepted, as determined by the Contracting Officer, in square meters yards.1.1.1.2 VolumeMeasure the quantity of ABC and GCA completed and accepted, as determined by the Contracting Officer, in cubic meters yards. The volume of material in
19、-place and accepted will be determined by the average job thickness obtained in accordance with paragraph THICKNESS CONTROL and the dimensions shown.1.1.1.3 WeightThe tonnage of ABC and GCA material will be the number of metric tons tons of aggregate, placed and accepted in the completed course plus
20、 the SECTION 32 11 23 Page 4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-amount placed in authorized stockpiles, as determined by the Contracting Officer. Deductions shall be made for any material wasted, unused, rejected, or used for convenience
21、of the Contractor, and for water exceeding specified amount at time of weighing.1.1.2 Payment for QuantitiesQuantities of ABC and GCA, determined as specified above, will be paid for at the respective contract unit prices, which shall constitute full compensation for the construction and completion
22、of the ABC and GCA.1.1.3 Payment for Stabilization of Underlying CourseStabilization of cohesionless subgrade or subbase courses, as specified in paragraph PREPARATION OF UNDERLYING COURSE, will be paid for as a special item on a tonnage basis. This tonnage price will include the price of extra mani
23、pulation as required.1.1.4 Waybills and Delivery TicketsBefore the final statement is allowed, file certified waybills and certified delivery tickets for all aggregates actually used, as specified in the Submittals paragraph.1.2 REFERENCES*NOTE: This paragraph is used to list the publications cited
24、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 when you add a RID outside of the Sections Reference Article to
25、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 references in the pub
26、lish print process.*The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by basic designation only.AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS (AASHTO)AASHTO T 180 (2001; R 2004) Moisture-Density
27、 Relations of Soils Using a 4.54-kg (10-lb) Rammer and an 457-mm (18-in) DropSECTION 32 11 23 Page 5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AASHTO T 224 (2001; R 2004) Correction for Coarse Particles in the Soil Compaction TestASTM INTERNATIO
28、NAL (ASTM)ASTM C 117 (2004) Standard Test Method for Materials Finer than 75-um (No. 200) Sieve in Mineral Aggregates by WashingASTM C 1260 (2007) Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)ASTM C 127 (2007) Standard Test Method for Density, Relative Densit
29、y (Specific Gravity), and Absorption of Coarse AggregateASTM C 128 (2007a) Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Fine AggregateASTM C 131 (2006)Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact
30、in the Los Angeles MachineASTM C 136 (2006) Standard Test Method for Sieve Analysis of Fine and Coarse AggregatesASTM C 29/C 29M (2007) Standard Test Method for Bulk Density (“Unit Weight“) and Voids in AggregateASTM C 88 (2005) Standard Test Method for Soundness of Aggregates by Use of Sodium Sulfa
31、te or Magnesium SulfateASTM D 1556 (2007) Density and Unit Weight of Soil in Place by the Sand-Cone MethodASTM 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 2167 (1994; R 2001) Density and Unit Wei
32、ght of Soil in Place by the Rubber Balloon MethodASTM D 2487 (2006) Soils for Engineering Purposes (Unified Soil Classification System)ASTM D 422 (1963; R 2007) Particle-Size Analysis of SoilsASTM D 4318 (2005) Liquid Limit, Plastic Limit, and Plasticity Index of SoilsASTM D 6938 (2007a) Standard Te
33、st Method for In-Place Density and Water Content of Soil and SECTION 32 11 23 Page 6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Soil-Aggregate by Nuclear Methods (Shallow Depth)ASTM D 75 (2003) Standard Practice for Sampling AggregatesASTM E 11 (
34、2004) Wire Cloth and Sieves for Testing Purposes1.3 DEFINITIONSFor the purposes of this specification, the following definitions apply.1.3.1 Aggregate Base CourseAggregate base course (ABC) is well graded, durable aggregate uniformly moistened and mechanically stabilized by compaction.1.3.2 Graded-C
35、rushed Aggregate Base CourseGraded-crushed aggregate (GCA) base course is well graded, crushed, durable aggregate uniformly moistened and mechanically stabilized by compaction. GCA is similar to ABC, but it has more stringent requirements and it produces a base course with higher strength and stabil
36、ity.1.3.3 Degree of CompactionDegree of compaction required, except as noted in the second sentence, is expressed as a percentage of the maximum laboratory dry density obtained by the test procedure presented in ASTM D 1557 abbreviated as a percent of laboratory maximum dry density. Since ASTM D 155
37、7 applies only to soils that have 30 percent or less by weight of their particles retained on the 19.0 mm 3/4 inch sieve, the degree of compaction for material having more than 30 percent by weight of their particles retained on the 19.0 mm 3/4 inch sieve are expressed as a percentage of the laborat
38、ory maximum dry density in accordance with AASHTO T 180 Method D and corrected with AASHTO T 224.1.4 SYSTEM DESCRIPTION*NOTE: If desirable, requirements for types of equipment applicable to methods of construction based on local conditions will be included.*All plant, equipment, and tools used in th
39、e performance of the work will be subject to approval before the work is started and shall be maintained in satisfactory working condition at all times. Provide adequate equipment having the capability of producing the required compaction, meeting grade controls, thickness control, and smoothness re
40、quirements as set forth herein.1.5 SUBMITTALS*NOTE: Review submittal description (SD) definitions in Section 01 33 00 SUBMITTAL PROCEDURES and edit the following list to reflect only the submittals SECTION 32 11 23 Page 7Provided by IHSNot for ResaleNo reproduction or networking permitted without li
41、cense from IHS-,-,-required for the project. Submittals should be kept to the minimum required 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 su
42、bmittal item is not complex and can be reviewed through the Contractors Quality Control system. 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 su
43、bmittal tags may be used following the “G“ designation to indicate the approving authority. 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
44、 Office; “RO“ for Resident Office; and “PO“ for Project Office. Codes following the “G“ typically 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“ des
