Outside temperatures will affect the time that you will need to allow for full depth penetration. This will vary slightly from season to season, but you can conduct repair operations on a year round basis. The outside temperatures will not compromise your ability to create thermally bonded surfaces, or full depth repairs.
If an inadequate support causes the reflective cracking, then the answer is no. The key to a successful infrared application relies on having a quality base. If your base lacks proper drainage, or is of a material that causes the surface to shift, the infrared process will dress up the area, but the reflective crack will work back through.
YES, if done in steps. If you had a single course of asphalt 3 inches thick, the rays would penetrate through the entire course. If you were to have 1″ overlay on top of that 3″ course, the rays would penetrate only the overlay, or one course at a time. The solution is to rake back the softened course, exposing the next course to heat. The rays then penetrate the exposed course. Utilizing the proper steps, you can achieve full depth penetration. Full depth penetration is not called for in certain situations. In the case of many potholes, the multiple layers will be exposed to the infrared rays already.
NO, infrared rays are unable to penetrate standing water such as you might find in a bird bath. Any standing pools of water should be swept away prior to heating otherwise the asphalt underneath will not properly heat. Moisture or dampness will have no effect on penetration.
Very slightly, we have received results from our lab tests that indicate no differences in physical properties or characteristics of the pavement. Please keep in mind that pavement characteristics vary from different geographic locations. Remember true infrared is a ray and does not require excessive amounts of heat to accomplish its task.
Infrared and conventional repair are similar in the respect that you only achieve good results from taking the time and proper steps to insure a quality job. This includes preparation, proper luting, and correct compaction. If any of these elements are missing then the result will suffer. We feel that infrared excels in the areas of application, seasonable usage, and the permanence of the repairs.
Infrared heating rays are created by pre-mixed gas, and air delivered under pressure to a series of energy converters. The converters composed of the following: A manifold formed in such a way as to create a rigid array of holes, which ensures a consistent, even flow of fuel-air mixture. The manifolds are 30″ and/or 36″ segments, in order to accommodate the proper expansion and contraction of the arrangement throughout the temperature range encountered, and we use stainless steel reflectors in order to ensure the proper deflection of the infrared rays toward the asphalt pavement.
An orifice strip which feeds the air-gas mixture, from the manifold, into the combustion area. The orifice strips are a welded, laminated array ensuring uniformity of apertures and long-term durability under intensive use. The assembly of the manifold and orifice strip is designed for rigidity and safety throughout the repeated heating and cooling cycles, intrinsic to infrared equipment. Our manifold and orifice strip are held together using heliarc welding, in order to ensure security and strength of the union.
A grid made from high-temperature nickel alloy material serves both to limit the combustion area and as the body that emits the infrared rays.
Asphalt reclaiming is the process of taking waste asphalt or stockpiled plant mix and slowly heating it up to working temperature where the asphalt can then be used as new pavement or patch material to repair existing pavement.
Performing the process of recovering ensures a better bond between the existing, surrounding asphalt and the now warm fill asphalt.
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