1、Standard Practice for Certifying Suppliers of Performance-Graded Asphalt Binders AASHTO Designation: R 26-01 (2013) American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite 249 Washington, D.C. 20001 TS-2b R 26-1 AASHTO Standard Practice for Certifying
2、Suppliers of Performance- Graded Asphalt Binders AASHTO Designation: R 26-01 (2013) 1. SCOPE 1.1. This standard specifies requirements and procedures for a certification system that shall be applicable to all suppliers of performance-graded asphalt binder (PGAB). The requirements and procedures shal
3、l apply to materials that meet the requirements of M 320, Section 5, Materials and Manufacture, and that are manufactured at refineries, mixed at terminals, in-line blended, or modified at the hot mix asphalt (HMA) plant. 1.2. This standard may involve hazardous materials, operations, and equipment.
4、 It does not purport to address all of the safety problems associated with this use. The user of this standard shall be responsible for appropriate safety and health practices. 2. REFERENCED DOCUMENTS 2.1. AASHTO Standards: M 320, Performance-Graded Asphalt Binder R 28, Accelerated Aging of Asphalt
5、Binder Using a Pressurized Aging Vessel (PAV) R 29, Grading or Verifying the Performance Grade (PG) of an Asphalt Binder R 66, Sampling Asphalt Materials T 48, Flash and Fire Points by Cleveland Open Cup T 313, Determining the Flexural Creep Stiffness of Asphalt Binder Using the Bending Beam Rheomet
6、er (BBR) T 315, Determining the Rheological Properties of Asphalt Binder Using a Dynamic Shear Rheometer (DSR) T 316, Viscosity Determination of Asphalt Binder Using Rotational Viscometer 2.2. ASTM Standards: D8, Standard Terminology Relating to Materials for Roads and Pavements D3665, Standard Prac
7、tice for Random Sampling of Construction Materials 3. TERMINOLOGY 3.1. AAPAASHTO accreditation program. 3.2. agencyshall be defined as a state highway agency or other agency responsible for the final acceptance of the PGAB. 3.3. ASapproved supplier. 2015 by the American Association of State Highway
8、and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-2b R 26-2 AASHTO 3.4. ASCapproved supplier certification. 3.5. asphalt binderan asphalt-based cement that is produced from petroleum residue either with or without the addition of nonparticulate organic
9、 modifiers. 3.6. PGABperformance-graded asphalt binder. 3.7. quality control testingthe quality control testing shall be described in the suppliers quality control plan. The suppliers quality control plan shall be approved by the agency. 3.8. specification compliance testingcomplete testing in accor
10、dance with the M 320 specification requirements. The procedure for verification of PGAB as described in R 29 shall be followed. 3.9. suppliershall be defined as one who produces the final product or who makes the blend or modification that alters the properties of the PGAB specified in M 320. A supp
11、lier shall be a refinery, a terminal, or an HMA producer. If no modification is made to the PGAB after its initial production at the refinery, the refinery shall be the supplier and must provide the certification. If any modifications are made to the PGAB at the terminal, the terminal shall be the s
12、upplier and must provide certification. If any modification, blending, or blending of PGAB from different sources is made at the HMA plant, the HMA producer shall be the supplier and must provide the certification. Note 1Various refining techniques can produce equivalent PGAB; however, these asphalt
13、s may be incompatible with each other. Users shall consider compatibility before combining asphalts from different sources. Note 2Definitions for many terms common to asphalt binder are found in ASTM D8. 4. SIGNIFICANCE AND USE 4.1. This standard specifies procedures for minimizing disruption of PGA
14、B shipments. This is accomplished by a certification system that evaluates quality control and specification compliance tests performed by the supplier on samples obtained prior to shipment. 4.2. The number of PGAB available under M 320 may require construction of additional storage facilities if th
15、e procedure of “sample and hold while testing” is followed exclusively. The addition of new storage capacity at a facility may be infeasible at some locations. Standardization of procedures that allow shipment under an approved supplier certification provides the flexibility needed to use existing f
16、acilities and to limit the shipment disruptions. 4.3. This standard provides information on the following activities: 4.3.1. General requirements that the supplier shall satisfy to be given approved-supplier status; 4.3.2. Minimum requirements that shall be included in a suppliers quality control pl
17、an; 4.3.3. General requirements that the agency shall satisfy before certification; 4.3.4. Procedure for shipping PGAB under an ASC system; 4.3.5. Procedure for agency monitoring of an ASC system at the shipping facility; and 4.3.6. Procedure for field sampling and testing of PGAB shipped under an A
18、SC system. 2015 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-2b R 26-3 AASHTO 5. HAZARDS 5.1. The safety requirements of the field and/or laboratory organization and/or OSHA shall be observed. 6. SAMPLI
19、NG 6.1. All test samples required by this standard shall be obtained in accordance with R 66 and ASTM D3665. The use of a random sampling procedure is mandatory to the establishment of a valid certification program. 7. TESTING REQUIREMENTS 7.1. Testing required for this standard shall be performed b
20、y a laboratory currently accredited by the AAP. Any satellite laboratory of a supplier that performs required testing under this standard shall be identified in the AS quality control plan (Section 9) and shall be approved by the agency. Note 3Cost of this inspection shall be borne by the source of
21、data. Satellite laboratories may be inspected by the sources primary AMRL inspected laboratory staff. A copy of the report of the satellite laboratory inspection shall be provided with the test report, if requested. 8. SUPPLIER REQUIREMENTS 8.1. The supplier shall submit a written request to the age
22、ncy for authorization to ship PGAB under the ASC system and shall list the PGAB to which the request applies. 8.2. The supplier shall allow the agency to visit the production and/or shipping site to observe the suppliers quality control activities, to inspect the facilities, and to obtain samples fo
23、r test. 8.3. The supplier shall submit to the agency for approval a complete quality control plan, which complies with the requirements of Section 9. 8.4. The supplier shall follow the procedures described in the approved quality control plan. 8.5. The supplier shall establish a continuing test reco
24、rd for each test required on each PGAB included in the written request prepared to satisfy the requirements of Section 8.1. 8.6. The supplier shall forward to the agency the initial series of test data for each performance grade included in the written request prepared to satisfy the requirements of
25、 Section 8.1. The supplier shall also obtain and provide a split sample for the agency, if requested. 8.7. The supplier shall submit to the agency all reports required by this standard in a form approved by the agency. A sample of an acceptable worksheet and standard report form is shown in Figures
26、1 and 2. 2015 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-2b R 26-4 AASHTO SAMPLE ID: _ Rotational Viscosity: Test Temperature: 135C C Spindle #: _ Speed: 20 RPM Three Readings/1-min intervals: _, _, _
27、 Average: cP X 0.001 = Pas Note: 1cP = 0.001 Pas Rolling Thin-Film Oven Residue: Time in oven: (+85 min) Time out of oven: Bottle number Weight of bottle and asphalt: G g Weight of bottle: G g Weight of asphalt before heating: G g Asphalt and bottle after heating: G g Mass loss () or gain (+): G g P
28、ercent loss () or gain (+): % % Average percent loss or gain % Pressure Aging Vessel Residue: Time in: (+20 h) Time out: Aging test temperature, nearest 0.1C: Maximum and minimum aging temperature recorded, nearest 0.1C: Max: Min: Total time during aging that temperature was outside the specified ra
29、nge, nearest 0.1 min: N/A Total aging time, hours and minutes: Bending Beam Rheometer: Sample ID: Time poured: Time trimmed: Time in bath: Time tested: Direct Tension Time: Sample ID: Time poured: Time trimmed: Time in chamber: Time tested: Figure 1Sample Worksheet 2015 by the American Association o
30、f State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-2b R 26-5 AASHTO Project: Supplier: Sample: Comments/requests: Tech: Date: Performance grade: Original Binder Flash Point Temp (T 48): Min 230C C Rotational Viscosity (T 316): Max 3 Pas
31、135C Pas Dynamic Shear (T 315): G*/sin (delta), min 1.00 kPa: kPa Test temp 10 rad/s, C: C RTFO Residue Percent Change, (1.00% max loss): % Dynamic Shear (T 315): G*/sin (delta), min 2.20 kPa: kPa Test temp 10 rad/s, C: C PAV Residue (R 28), 20 h 2.07 MPa Dynamic Shear (T 315): G*/sin (delta), Max 5
32、000 kPa: kPa Test temp 10 rad/s, C: C Creep Stiffness (T 313): S, Max 300 Mpa MPa Test temp 60 s, C C m-value, Min 0.300 Direct Tension (T 314): Failure strain, Min 1.0%: % Test temp 1.0 mm/min, C C Figure 2Performance-Graded Binder Test Results According to M 320 2015 by the American Association of
33、 State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-2b R 26-6 AASHTO 8.8. The supplier shall have a satisfactory record of compliance with governing specifications. Judgments by the agency concerning this requirement shall be based on the
34、test results furnished by the supplier and satisfactory results when the monitoring and field tests are compared with supplier tests. 9. SUPPLIER QUALITY CONTROL PLANMINIMUM REQUIREMENTS 9.1. The suppliers quality control plan shall identify the following: 9.1.1. Facility type (refinery, terminal, i
35、n-line blending, or HMA plant); 9.1.2. Facility location; 9.1.3. Name and telephone number of the person responsible for quality control at the facility; 9.1.4. The quality control tests to be performed on each PGAB; and 9.1.5. Name and location of the laboratory performing quality control tests on
36、the PGAB that is shipped. 9.2. The suppliers quality control plan shall include a declaration stating that if a test result indicates that a shipment of PGAB is not in compliance with the purchase specifications, the supplier shall (1) immediately notify the agency of the shipment in question; (2) i
37、dentify the material; (3) cease shipment until material complies with the specification; (4) notify the agency prior to resuming shipment; and (5) implement any mutually agreed-upon procedures for the disposition of the material. In the event a mutual agreement is not obtained, the specifying agency
38、 shall have final authority in the decision on specification compliance. 9.3. The suppliers quality control plan shall describe method and frequency for initial testing, quality control testing, and specification compliance testing. 9.3.1. Initial TestingFor each grade of PGAB to be supplied, specif
39、ication compliance testing (complete M 320 testing) shall be performed for at least three consecutive lots. A lot may be a fixed batch of material or a specified quantity in a continuous operation (see Note 4). The supplier and the agency shall agree on a lot size. The agency must approve any change
40、 to a lot size. Note 4If a batch operation is used to manufacture the PGAB, a tank may be defined as a lot. Lot size would be the amount of material batched into the tank. If a continuous process (in-line blending or a shipment from “live” tanks) is used to manufacture the PGAB, lot size may be obta
41、ined at random during the production for continuous operations. Lot size shall depend on the production method used and the quantity of the PGAB produced. 9.3.2. Reduced Frequency of Testing for Specification ComplianceIf approved by the agency, the frequency of testing for specification compliance
42、may be decreased if the individual M 320 test result for every sample of the initial testing is within specification by at least the tolerance of the test method for each of the required test methods. With the approval of the agency, the frequency of testing may be further reduced as long as the ind
43、ividual test results continue to meet the tolerance criterion. If the tolerance criterion is not met, every lot will continue to be tested for the individual M 320 property until three consecutive lots comply with the tolerance criterion. 9.3.3. Minimum FrequencySpecification compliance testing shal
44、l be run at the minimum frequency required by the agency for each PGAB that is supplied. 9.3.4. Quality Control Testing for Guiding ManufacturerAt least two M 320 tests shall be used for monitoring high- and low-temperature properties of the PGAB. Non-M 320 tests may be used for guiding manufacturer
45、, if approved by the agency. The use of non-M 320 tests does not preclude 2015 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-2b R 26-7 AASHTO the need to meet M 320 specifications or to run complete M 32
46、0 tests according to the guidelines in Section 9.3. 9.4. The suppliers quality control plan shall include a statement that the supplier will prepare monthly summary reports for all quality control and specification compliance tests performed during that period and will submit them to the agency on r
47、equest. 9.5. The supplier quality control plan shall provide an outline of the procedure to be followed for checking transport vehicles before loading to prevent contamination of shipments. The outline shall include a statement that the transport vehicle inspection report, signed by the responsible
48、inspector, shall be maintained in the suppliers records, and will be made available to the agency on request. 9.6. The supplier shall submit a written request to the agency for authorization to use in-line blending of additives that meet Section 5 of M 320 at the HMA plant to produce PGAB. With the request, the supplier shall submit (1) a sample of the additives; (2) a sample of the base binder materials; (3) a notice of the proportions that will be used; and (4) the M 320 test results for the base binder material and
