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FHWA > Engineering > Pavements > Research > LTPP > FHWA-HRT-07-052 > Protocol 04 |
Long Term Pavement Performance Project Laboratory Materials Testing And Handling GuideProtocol P04
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Nominal Maximum Aggregate Size | Recommended Test Sample Size |
---|---|
½ inch (12.5 mm) | 3.0 - 3.5 lbs. (1.4 - 1.6 kg) |
¾ inch (19.0 mm) | 4.0 - 4.5 lbs. (1.8 - 2.0 kg) |
1 inch (25.0 mm) | 6.5 - 7.0 lbs (2.9 - 3.2 kg) |
1 ½ inch (37.5 mm) | 8.5 - 9.0 lbs (3.9 - 4.1 kg) |
In any event, if the available material does not provide an adequate size test specimen and is 25 percent less than the recommended minimum size, then this size deficiency can be made up by taking more material from one of the other cores from the same sampling area (and same testable layer) after it has been tested using the specified nondestructive test (such as LTPP test AC02).
8.2.3 In addition, a test specimen is required for the determination of moisture (Section 9) in the mixtures. Take this test specimen from the remaining portion of the layer immediately after obtaining the extraction test specimen.
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12.2 Calculate the percent asphalt content (BC) using the following:
Where W1, W2, W3, and W4 are the same as defined in 12.1 of the AASHTO Standard.
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31.1 Sample Identification shall include: Laboratory Identification Code, Region, State, State Code, SHRP ID, Layer Number, Field Set Number, Sample Area Number, Sample Location Number, LTPP Sample Number.
31.2 Test Identification shall include: Laboratory Test Number, Test Date, LTPP Test Designation, LTPP Protocol Number.
31.3 Test Results
Asphalt content, in percentage form, to one decimal place (BC).
31.4 Comments shall include LTPP standard comment code(s) as shown in Section 4.3 and any other note as needed.
31.5 Use Form T04 (Test Sheet T04) to report the above information (Items 31.1 to 31.4).
LTPP LABORATORY MATERIAL HANDLING AND TESTING
LABORATORY MATERIAL TEST DATA
ASPHALT CONTENT (QUANTITATIVE EXTRACTION)
LAB DATA SHEET T04
ASPHALTIC CONCRETE LAYER (ASPHALTIC CONCRETE PROPERTIES)
LTPP TEST DESIGNATION AC04/LTPP PROTOCOL P04
LABORATORY PERFORMING TEST:______________________________________________________________
LABORATORY IDENTIFICATION CODE:__ __ __ __
REGION _________________ STATE ___________________ STATE CODE __ __
EXPERIMENT NO _____
SAMPLED BY: ______________________________________________ FIELD SET NO. __
DATE SAMPLED: __ __-__ __-__ __ __ __
1. LAYER NUMBER (FROM LAB SHEET L04 AND FORM T01B) __
2. SHRP ID | __ __ __ __ | __ __ __ __ | __ __ __ __ |
3. SAMPLING AREA NO. (SA-) | __ __ | __ __ | __ __ |
4. LABORATORY TEST NUMBER | __ | __ | __ |
5. LOCATION NUMBER | __ __ __ | __ __ __ | __ __ __ |
6. LTPP SAMPLE NUMBER | __ __ __ __ | __ __ __ __ | __ __ __ __ |
7. ASPHALT CONTENT (BC) | __ __ . __ % | __ __ . __ % | __ __ . __ % |
8. COMMENTS | |||
(a) CODE | __ __ __ __ __ ____ __ __ __ __ __ | __ __ __ __ __ ____ __ __ __ __ __ | __ __ __ __ __ ____ __ __ __ __ __ |
(b) NOTE | __________________________________ | __________________________________ | __________________________________ |
9. TEST DATE |
__ __ - __ __ - __ __ __ __ |
__ __ - __ __ - __ __ __ __ |
__ __ - __ __ - __ __ __ __ |
GENERAL REMARKS:___________________________________________________________________________ | |
SUBMITTED BY, DATE | CHECKED AND APPROVED, DATE |
______________________________ | ______________________________ |
LABORATORY CHIEF Affiliation______________________ | Affiliation______________________ |
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