Testing equipment for Asphalt and Bitumen Bitumen is the liquid binder that holds asphalt together. A bitumen-sealed surface is a layer of bitumen sprayed and then covered with an aggregate. This is then repeated to give a two-coat seal. Asphalt is produced in a plant that heats, dries and mixes aggregate, bitumen and sand into a composite. Both asphalt and bituminous mixture are basic paving materials for highway, road, airport runway and bridge. Mixing different quality and quantity of above materials will form various mixing ratios, under proper temperature the ratios lead to different material structures with different mechanical properties. Through laboratory actual tests upon various specimen, users can choose the most suitable one, then it is possible to improve materials selection and mixture design for sturdy and durable pavement building.
TBT company offers all series of instruments and machines to test bitumen To test bitumen consistency and viscosity: Bitumen Viscometer, Penetrometer, Asphalt Tenacity Testers. To test bitumen plasticity: Ductimeter, which detects bitumen deformation under certain temperature and tensile force without any cracking. To test bitumen temperature stability: Softening point apparatus (Ring and ball apparatus), Penetrometer (PIVOT), Fraas breaking point apparatus, Rolling thin film oven, Saybolt viscometer. To test bitumen atmospheric stability: Pressure Ageing Vessel (PAV) To test bitumen safety: Flash & Fire point tester
TBT provides below laboratory instruments for fundamental properties determination of Asphalt / Bituminous Mixture Asphalt mixture analyzer: Automatic Binder Extraction unit, Centrifugal Binder Extractor, Asphalt binder analyzer by Ignition Method. Mixture density: Gravity Tester Vacuum Pyknometer (Theoretical maximum specific gravity tester), Asphalt concrete bulk density tester. Compression stability, flow value & splitting stiffness: Marshall Compression Machine,Digital multipurpose loading frame, Multifunctional Automatic Asphalt pressure tester Anti-rutting ability: Automatic wheel-tracker, splitting device Low-temperature cracking resistance: Bending beam creep apparatus Wearing resistance: wet wheel wearing meter Water Sensitivity: Immersed Marshall test, vacuum water-saturated Marshall test, freeze-thaw splitting test, Immersed wheel-tracking test. Structure depth & porosity: manual or electric sanding device Specimen preparation: Asphalt Mixture blender, laboratory mixer, Marshall electrical compactor, Gyratory compactor, wheel-tracking Compactor, Vibrating roller compactor, Constant Temperature Water Bath, core drilling machine, Asphalt saw.
Regarding the quality control of highway, bridge, airport, etc., TBT company also provides following outdoor on site testing equipment To test deflection: Falling Weight Deflectometer (FWD), Light weight deflectometer(LWD), Heavy weight deflectometer(HWD----specially for airport runway); To test eflection coefficient: Road marking retroreflectometer, Traffic Sign Retroreflectometer. To test skid resistance & friction: Skid resistance and friction tester, Continuous Friction Coefficient Tester. To test pavement quality: Road Surface Profilometer, Networkd Survey Vehicle(NSV) To test overload: axle weight pad
