Asphalt, also known as bituminous conglomerate, is a fundamental material of road construction. It’s primarily composed of aggregates and binder with an infinite variation of mixtures. The binder of the asphalt is called bitumen. As traffic conditions increase, there’s an ever-growing need for higher performance levels of the asphalt present in today’s roads.
Asphalt testing is important to ensure that asphalt looks like the constituent mix and has all the necessary performance characteristics. It’s also increasingly important to monitor asphalt for voids percentage, compaction levels, and characteristics such as the stiffness modulus and fatigue resistance in relation to the temperature, together with frequency of load or strain application.
Modern asphalt pavements must resist rutting, thermal variations, high load cycles, hydraulic pressures from water, and more. Creating a mix with long pavement life and low maintenance costs begins with extensive testing in the lab. Aggregates, binder types, and additives are evaluated separately before finding the correct proportions for blending. Once a suitable mix design has been established, quality control and quality assurance testing guarantees installation of a quality pavement.
Gilson's complete line of asphalt testing equipment accounts for all of this and more with an extensive selection of asphalt mix design testing, asphalt binder testing, and pavement quality testing equipment for both Marshall and Superpave mixes.
- Asphalt Mix Design – This is the process of designing a complete paving mixture to meet the needs of a specific project using popular methods such as Marshall or Superpave®. This includes determination of what aggregate to use, what asphalt binder to use and what the optimal combination of these two ingredients should be. There may be unique requirements for rut-resistance, wear-resistance, use of a particular aggregate type, or overall strength. Gilson offers a variety of items for Marshall testing, Superpave design, Asphalt Extraction, and more. Popular products include our Asphalt Binder Ignition Furnace, Hamburg Wheel Tracker, and the Gilson QuarterMaster Asphalt Sample Divider.
- Asphalt Binder Testing – Encompasses a variety of tests used to evaluate construction materials, paving mixtures and finished pavements. This type of testing determines properties of the binder product most likely to affect pavement performance of the final hot-mix product. Rolling Thin Film Ovens, Bending Beam Rheometers, Pressure Aging Vessels, are featured here, along with the Rotational Viscometer/Rheometer and Dynamic Shear Rheometer by Brookfield. Equipment for asphalt viscosity, softening point, penetration resistance, ductility, and asphalt bulk specific gravity is included here.
- Pavement Quality Testing – The final step in testing begins with laydown of the hot-mix asphalt mat. These tests are used to ensure optimal quality control requirements are met. Gilson features FLIR® Thermal Imaging Systems, making it easy to monitor and visually record asphalt properties during paving operations. Core Drilling Machines with Diamond Core Bits, NCAT Asphalt Field Permeameters, and Benkelman Beams allow complete evaluation of the finished pavement.
Gilson’s family of asphalt testing equipment offers the widest range products with the performance, features, and capacities you require. Gilson equipment meets your needs for fast, accurate, and reliable material analysis, compliant with ASTM and AASHTO standards.