A02.DOR-Asphalt Extraction-rev 08MAR2022.pdf

DESCRIPTION OF REQUIREMENTS (DOR)

Automatic Asphalt Binder Extraction Unit

Purpose and Scope The Airfields and Pavements Branch (APB) of the U.S. Army Engineer Research and Development Center (ERDC), Vicksburg, MS, frequently performs laboratory testing and analysis of asphalt binders to characterize their engineering properties. During normal research activities or during forensic investigations, it is often necessary to extract and recover asphalt binder from existing asphalt pavement mixtures. APB requires an automatic extraction system that is capable of completing the extraction process in a completely closed cycle for operator safety (eliminate exposure to toxic fumes and contact with harmful solvents). An automatic system is also needed in order to increase testing productivity. The automatic extraction system must be compatible with standard non-flammable solvents and should meet requirements of ASTM D8159, “Standard Test Method for Automated Extraction of Asphalt Binder from Asphalt Mixtures.”

Description of Requirements

1. Automatic Asphalt Binder Extraction Unit that meets the following requirements:

a. Dimensions: 1400 x 800 x 1500 mm maximum

b. Electrical requirements: cannot exceed 480 V, 60 Hz, 3 Ph

c. Maximum sample weight: 3.5 kg

d. Centrifuge rotation speed: 6000-8000 rpm

e. Max filler capacity: 300 g approx.

f. Extraction time: 45-60 min approx. (including drying time)

g. Unit shall meet all requirements of ASTM D8159 Section 5.1.

h. Unit shall utilize trichlorethylene solvent.

i. Unit shall have an integrated balance for weighing samples.

2. Washing Drum

a. Drum shall meet all requirements of ASTM D8159 Section 5.2.

b. Drum mesh shall have apertures of 0.075 mm.

c. Drum shall have a lid.

d. 2 drums and 1 lid shall be supplied.

3. Centrifuge Cup

a. Centrifuge cup shall meet all requirements of ASTM D8159 Section 5.3.

b. Diameter shall be 120 mm.

c. 2 centrifuge cups shall be supplied.

d. 1 centrifuge cup extraction tool shall be supplied.

e. 3,000 insert papers shall be supplied for the cup.

4. Solvent and Solvent Management

a. Min. 32 L Trichloroethylene, reagent grade meeting ASTM D8159 Section 6.2.2.

b. Solvent pH Test Kit (Qty: 1).

c. Solvent Stabilizer, 1000 mL bottle (Qty: 1).

d. Solvent Transfer Pump (Qty: 1).

e. Quick-connect coupling for rotary evaporator flask (Qty: 1).

f. 5 gallon waste drum.

5. Water cooling chiller system to provide chilled water from 10 to 25 °C.

6. Freight and training should be included in pricing.

Delivery By July 1, 2022.

Engineer Research and Development Center (ERDC) Airfields and Pavements Branch

CEERD-GMA

3909 Halls Ferry Road Vicksburg, MS 39180

DESCRIPTION OF REQUIREMENTS (DOR)