1、*USACE / NAVFAC / AFCESA / NASA UFGS-32 01 25 (August 2008)-Preparing Activity: USACE SupersedingUFGS-32 01 25 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated July 2008*SECTION TABLE OF CONTENTSDIVISION 32 - EXTERIOR IMPROVEMENTSSECTION 32 01 25HEATER S
2、CARIFYING OF BITUMINOUS PAVEMENTS08/08PART 1 GENERAL1.1 MEASUREMENT AND PAYMENT PROCEDURES1.1.1 Methods of Measurement1.1.1.1 Bituminous Material and Recycling Agent1.1.1.2 Treated Pavement1.1.1.3 Heater Scarifying1.1.2 Payment1.2 REFERENCES1.3 SYSTEM DESCRIPTION1.3.1 Heater Scarifier1.3.2 Bituminou
3、s Distributor1.3.3 Cleaning Equipment1.4 SUBMITTALS1.5 QUALITY ASSURANCE1.5.1 Sampling1.5.2 Testing1.6 ENVIRONMENTAL REQUIREMENTSPART 2 PRODUCTS2.1 BITUMINOUS MATERIAL2.2 RECYCLING AGENTSPART 3 EXECUTION3.1 PREPARATION OF SURFACE3.2 SCARIFYING OPERATION3.3 APPLICATION OF BITUMINOUS EMULSION AND RECY
4、CLING AGENTS3.4 COMPLETION OF PAVEMENT- End of Section Table of Contents -SECTION 32 01 25 Page 1Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-*USACE / NAVFAC / AFCESA / NASA UFGS-32 01 25 (August 2008)-Preparing Activity: USACE SupersedingUFGS-32
5、01 25 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated July 2008*SECTION 32 01 25HEATER SCARIFYING OF BITUMINOUS PAVEMENTS08/08*NOTE: This guide specification covers the requirements for heater scarifier procedures for bituminous pavements in connection
6、with surface treatments or asphalt overlays.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,
7、 whether or not brackets 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.Recommend
8、ed changes to a UFGS should be submitted as a Criteria Change Request (CCR).*PART 1 GENERAL*NOTE: Experience and data indicate that scarifying is feasible only on existing asphalt concrete pavements which are structurally sound but in need of surface leveling or sealing, for example, pavements distu
9、rbed for utility trenches or other openings or where patches have settled and surface deterioration exists. This specification covers the use of heater scarifiers for the maintenance of bituminous pavements. Heater scarifying is to be used in conjunction with surface treatments and asphalt overlays;
10、 therefore, a surface treatment or asphalt overlay section should be included in the project specifications.SECTION 32 01 25 Page 2Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-*1.1 MEASUREMENT AND PAYMENT PROCEDURES*NOTE: When other methods of mea
11、surement are desired or are necessary, this paragraph will be modified accordingly.*1.1.1 Methods of MeasurementDetermine quantities of bituminous material recycling agent applied and area of pavement treated in the accepted work by the following methods.1.1.1.1 Bituminous Material and Recycling Age
12、ntThe quantity of bituminous material recycling agent to be paid for will be the number of liters gallons used in the accepted work as determined by the Contracting Officer, corrected to liters at 15.6 degrees C gallons at 60 degrees F in accordance with ASTM D 1250 and using a coefficient of expans
13、ion of 0.00045 per degree C 0.00025 per degree F for asphalt emulsion.1.1.1.2 Treated PavementThe quantity of pavement treated with bituminous material recycling agent is the number of square meters yards completed and accepted as determined by the Contracting Officer. Determine the number of square
14、 meters yards of treated pavement by measuring the length and width of the specified work area. Take measurements to determine the number of square meters yards along the surface of the pavement and to the closest mm inch for width and the closest meter foot for length.1.1.1.3 Heater ScarifyingThe q
15、uantity of heater scarifying of bituminous concrete surfaces is the number of square meters yards completed and accepted, as determined by the Contracting Officer. Determine the number of square meters yards of scarified pavement by measuring the length and width of the specified work area. Take mea
16、surements along the surface of the pavement to the closest mminch for width and the closest meter foot for length.1.1.2 PaymentQuantities of heater scarifying, treated pavement and bituminous material recycling agent will be paid for at respective contract unit prices.1.2 REFERENCES*NOTE: This parag
17、raph 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 when you add a RID o
18、utside of the Sections SECTION 32 01 25 Page 3Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Reference Article to automatically place the reference in the Reference Article. Also use the Reference Wizards Check Reference feature to update the issue
19、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 publish print process.*The publications listed below form a part of this specification to the extent referenced. The publications are refe
20、rred 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 MaterialsASTM INTERNATIONAL (ASTM)ASTM D 1250 (2007) Standard Guide for Use of the Petroleum Measurement TablesASTM D 14
21、0 (2001; R 2007) Sampling Bituminous MaterialsASTM D 2170 (2007) Kinematic Viscosity of Asphalts (Bitumens)ASTM D 2397 (2005) Standard Specification for Cationic Emulsified AsphaltASTM D 244 (2004) Emulsified AsphaltsASTM D 92 (2005a) Standard Test Method for Flash and Fire Points by Cleveland Open
22、Cup TesterASTM D 977 (2005) Emulsified Asphalt1.3 SYSTEM DESCRIPTIONMaintain equipment, tools, and machines used in the performance of the work in a satisfactory working condition at all times and conforming to applicable governing regulations for local air pollution controls.1.3.1 Heater ScarifierP
23、rovide a heater scarifier that is: 1) a self-propelled machine having, in combination, the means of heating and scarifying the existing asphaltic concrete surface and spreading the scarified material in a uniform layer. 2) capable of producing a minimum thickness of 19 mm 3/4 inch of uncompacted rec
24、laimed mix without damaging the asphalt binder or violating pollution standards of the area. 3) capable of working at a rate of speed that allows heating and scarifying the pavement to meet the specified requirements. The heating, scarifying, and spreading widths of the machine shall be equal.SECTIO
25、N 32 01 25 Page 4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1.3.2 Bituminous DistributorProvide a bituminous distributor mounted on pneumatic tires of such size and number to prevent rutting, shoving, or other damage to the base, surface, or oth
26、er layers in the pavement structure. Design and equip the distributor to spray the bituminous or recycling material in a uniform coverage at the specified temperature, and at readily determined and controlled rates with an allowable variation from the specified rate of not more than plus or minus 5
27、percent. The distributor shall be capable of being operated at variable widths. Include with the distributor equipment a separate power unit for the bitumen pump, full circulation spray bars, tachometer, pressure gauges, volume measuring devices, a thermometer for reading the temperature of tank con
28、tents, and a hose attachment suitable for applying bituminous material to inaccessible areas and patches. Equip the distributor for circulation and agitation of the bituminous material during the heating process.1.3.3 Cleaning EquipmentUse power brooms and power blowers suitable for cleaning the sur
29、face and cracks in the existing pavement prior to treatment.1.4 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 requir
30、ed 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 syst
31、em. 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 authority.
32、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“ typi
33、cally 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.*SECTION 32 01 25 Page 5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS
34、-,-,-Government approval is required for submittals with a “G“ designation; submittals not having a “G“ designation are for Contractor Quality Control approval.information only. When used, a designation following the “G“ designation identifies the office that will review the submittal for the Govern
35、ment. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:SD-04 SamplesMaterials; G; G, _Samples of proper size for approval, not less than _ days before commencing the work. Furnish additional samples of materials as required during construction.SD-06 Test ReportsTestingBe
36、fore delivery of materials, certified copies of the test reports establishing compliance with specifications detailed herein and in referenced publications. Submit test results on materials prior to and during construction.1.5 QUALITY ASSURANCE1.5.1 SamplingTake all samples of bituminous material re
37、cycling agent in accordance with the requirements of ASTM D 140, unless otherwise specified. All materials will be subject to approval before use.1.5.2 TestingTesting will be the Governments responsibility is the responsibility of the Contractor, performed by an approved commercial testing laborator
38、y or by Contractors testing laboratory, subject to the approval of the Contracting Officer. Test the materials to establish compliance with the specified requirements.1.6 ENVIRONMENTAL REQUIREMENTSPerform heater scarifying procedures only when the existing pavement is dry and the pavement surface te
39、mperature is above 15 degrees C 60 degrees F.PART 2 PRODUCTS*NOTE: Designer will specify either bituminous material or recycling agent to be used for treating the scarified surface, and will delete the inapplicable paragraph and renumber all subsequent paragraphs accordingly. When bituminous materia
40、l is to be used, grade SS-1 or CSS-1 asphalt emulsion should be specified in moderate or cold climates and grade SS-1h or CSS-1h should be specified in hotter climates such as the southern or southwestern areas of the United States.*SECTION 32 01 25 Page 6Provided by IHSNot for ResaleNo reproduction
41、 or networking permitted without license from IHS-,-,-2.1 BITUMINOUS MATERIALProvide bituminous material which is an emulsified asphalt, Grade _, conforming to ASTM D 977 ASTM D 2397. The asphalt from which emulsion is made shall have a negative spot when tested in accordance with AASHTO T 102.2.2 R
42、ECYCLING AGENTSProvide recycling agents composed of a petroleum base oil uniformly emulsified with water, conforming to the requirements of the table below, and having a proven record of satisfactory service for at least two years prior to use in this contract.RECYCLING AGENTProperty Requirement Tes
43、t Method_ _ _Residue, percent 55 minimum ASTM D 244 (1)Viscosity at 60 degrees C, 80-500 ASTM D 2170sq mm/sec (2) Flash Point (3) Cleveland 350 minimum ASTM D 92Open Cup (COC), degrees CRECYCLING AGENTProperty Requirement Test Method_ _ _Residue, percent 55 minimum ASTM D 244 (1)Viscosity at 140 deg
44、rees F, 80-500 ASTM D 2170centistokes (2)Flash Point (3) Cleveland 350 minimum ASTM D 92Open Cup (COC), degrees F(1) Modify ASTM D 244 evaporation test for percent residue by heating 50-gram samples to 148 degrees C 300 degrees F until foaming ceases; then cool immediately and calculate results.(2) Viscosity on the residue obtained from evaporation test.(3) Flash point on residue from evaporation test.PART 3 EXECUT
