Ductility of bituminous materials measures elongation before breaking of a formed briquet specimen. The ends are pulled apart in a liquid-filled trough at specified speed and temperature. Gilson offers mechanical and electronic speed control testing machines, and complete temperature controlled consoles incorporating the mechanical testing machine.Ductility Testing Machines have 3 speed selections of 2.5,10 and 50mm/min. and can test up to 3 briquets simultaneously. A single bronze lead screw mounted above water level prevents agitation of water and premature rupture of specimens. A travelling pointer indicates exact position of the carriage on a scale attached to the edge of the trough until automatic stop at 1500mm maximum travel. The polished stainless steel trough has a liquid overflow connection. Gears are bronze; other parts are brass. Outside dimensions of trough are 74x11-3/4x6-3/8" (1880x298x162mm), LxWxH.
LP-1 Mechanical Ductility Tester maintains vibration-free constant speed via DC direct motor drive and gear box with shift lever.
LP-4 Electronic Ductility Tester uses a solid state speed controller with feedback to continually adjust the DC motor. Both units meet ASTM, AASHTO and other specifications when used with LP-12 temperature console or other means of maintaining liquid temperature within ±0.5°C (0.9°F).
LP-12 Controlled Temperature Console is a self-contained unit incorporating the LP-1 machine along with liquid heating, cooling, and circulation capability for ductility testing over a temperature range of 0-49°C (32-120°F) ±0.1°F. The system includes 1/2-hp refrigeration unit and two 750-watt incoloy immersion heaters with high liquid circulating capacity. Flow is regulated in three directions by valves with cutoff once temperature equilibrium is reached. Model LP-12 has 1/4" (6.4 mm) interior of white polypropylene and 3/8" (9.55mm) thick exterior are suitable for studies using sodium chloride solutions. Console is fully insulated with 2" (50.8mm) thick foam. Overall dimensions: 90x23x41" (2286x584x104mm), WxDxH including casters.
All Ductility Testers include three LPA-20 Ductility Mold and LPA-24 Base Plates. Larger LPA-26 Base Plate is for forming three molds on same base. Each 4-part machined brass mold consists of two end clips with mounting holes and two sides that are removable for testing of briquets. The 10mm thick precision parts are interchangeable among molds and meet all dimensional requirements. The 3mm thick brass base plates are flat and level for even contact with bottom of molds. LPA-24 is 5.5x2" (140x51mm); LPA-26 is 5x8" (127x203mm).
Accessories for Compression Machines Selection Guide
