Asphalt Pavement Analyzer.

Asphalt Pavement Analyzer Manual Asphalt Pavement Analyzer PLC Control System Location Maps for APA

Asphalt Pavement Analyzer with PLC PC based control system.	The Asphalt Pavement Analyzer (APA) is a multifunctional Loaded Wheel Tester (LWT) used for evaluating permanent deformation (rutting), fatigue cracking and moisture susceptibility of both hot and cold asphalt mixes. Testing time for a complete permanent deformation evaluation is 2 hours and 15 minutes (8,000 cycles). The testing time for fatigue cracking evaluation is dependent upon the fatigue behavior of the mix being evaluated. Permanent deformation (rutting) susceptibility of mixes is assessed by placing beam or cylindrical samples under repetitive wheel loads and measuring the amount of permanent deformation under the wheel path. The APA features an Automated Data Acquisition System, which obtains rutting measurements and displays these measurements in a numeric and graphical format. Five measurements can be taken during a single pass over a beam specimen and two measurements can be taken during a single pass over a cylindrical specimen. The APA features controllable wheel load and contact pressure that are representative of actual field conditions. Each sample can be subjected to a different load level (up to 113 kg/250 Ibs) resulting in Contact Pressures up to 200 psi (1378 kpa). Triplicate beam samples, or six cylindrical (gyratory, vibratory, marshall pills, roadway cores) samples in three specially designed sample molds can be tested under controllable temperature and in dry or submerged-in water environments. Fatigue cracking resistance of asphalt concrete can be determined by subjecting beam samples to a repeated wheel load of controllable magnitude and contact pressure in a low temperature environment. Triplicate beam samples can be tested under dry or submerged-in water environments.
The Automated Data Acquisition System features a computer, monitor, and software for measuring rutting and fatigue. The software obtains all measurements and then plots them in a numeric and graphical format. The graphs display stroke vs. deformation (mm) and stroke vs. time.
Beam Fatigue Samples in Chamber Hamburg Type Mold with Gyratory Specimens

Specifications Dimensions Width: 88.90 cm (35 in) Length: 177.80 cm (70 in) Height: 203.20 cm (80 in) Weight: 1357.47 kg (3000 lbs.) Requirements Electrical: 230 VAC, 60 HZ, 40 Amp., 1 Ph Plug Type: 4 wire, NEMA#14-50P Compressed Air: 8 SUM C 827 Kpa (120 psi minimum) Capacity Water: 35 gallons Samples: 3 Beam Specimens or 6 Cylindrical Specimens Components Wheel Tracking / Loading System Pneumatic cylinders (by use of beveled aluminum wheels) apply a repetitive load through high pressure hoses to generate contact pressure. The system is capable of 200 psi contact pressure. Sample Holding Assembly Holds the High Density Polyethylene sample molds under the Loading System. Tray slides in and out for easy loading. Temperature Control System Testing chamber temperature is microprocessor controlled and has a range of 4° to 72°C, (39° to 162°F). Water Submersion System. Submerges samples completely under water during testing. Tank is automatically raised and lowered as needed. Rut Depth Measurement Device A micrometer is used to take deformation measurements (Manual APA). Automated Data Aquisition Software is used to take Rutting and Fatigue measurements (Automated APA) Operating Controls All controls for operation are mounted on the front of the unit. The panel can be opened for access to wiring. Pre Conditioning Shelves Used to bring samples to desired temperature. Room for 3 Beam Samples or 6 cylindrical samples.

Pavement Technology Inc.
9126-A Industrial Blvd.
Covington, GA 30014

Telephone:
Fax: