The FHWA 1629 form represents a crucial document utilized by the U.S. Department of Transportation Federal Highway Administration, especially within the Federal Lands Highway division. This technical worksheet is meticulously designed to assist in calculating the maximum specific gravity of bituminous paving mixtures, following the AASHTO T 209 (Bowl Determination) standard. The form captures essential data points including project source, sampling location, quantity represented, alongside details of the sample like lot number, sample number, who collected the sample, and dates of sampling and testing. It also intricately details measurements required in both English and Metric systems, such as sample number, location/station, vacuum absolute pressure, binder percentage by mass of mix, and various weights and volumes leading to the calculation of the maximum specific gravity of the mixture and unit weight. This document is not only crucial for engineers and construction professionals working on federal lands highway projects but also serves as a standardized method for ensuring the quality and specifications of bituminous paving mixtures meet stringent federal standards, thereby ensuring the longevity and safety of roadway projects.
| Question | Answer |
|---|---|
| Form Name | Form Fhwa 1629 |
| Form Length | 1 pages |
| Fillable? | No |
| Fillable fields | 0 |
| Avg. time to fill out | 15 sec |
| Other names | WORKSHEET, PAVING, density and specific gravity worksheet, aggregate |
U.S. Department of Transportation
Federal Highway Administration
Federal Lands Highway
WORKSHEET FOR DETERMINING MAXIMUM SPECIFIC GRAVITY
OF BITUMINOUS PAVING MIXTURES
AASHTO T 209 (BOWL DETERMINATION)
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Source |
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Where sampled |
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Quantity represented |
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Sample of |
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Lot No. |
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Sample No. |
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Sampled by |
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Tested by |
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Date |
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English
Metric
Sample Number
Location/Station
Vacuum Absolute Pressure, mm Hg
(A)% Binder by mass of mix
(B)Mass of mix and bowl, g
(C)Mass of bowl, g
(D)Mass of mix (BC), g
(E)Mass of bowl and mix in
water at |
, g |
(F)Mass of bowl in water at
,g
(G)Mass of mix in water at (EF), g
(H)Mass of mix, air dried to constant mass, g
(J)Mass of water absorbed by aggregate (HD), g
(K)Volume of mix (DG+J),
mL
(L)Maximum specific gravity of mixture (D/K)
(M) Unit Weight,
Form FHWA 1629 (Rev 0207)