This study explored the economics of replacing chip sealing and thin hot-mix asphalt overlays for highways with surface retexturing with the same shotblasting technology that is used on airport pavements. This technology can restore both the microtexture and macrotexture on pavements that have skid resistance due to polishing. An economic analysis of a typical highway lane is conducted to determine life-cycle costs of various options for the hypothetical project. The study uses FHWA pavement life-cycle cost methodology and reports the results on a net present value basis to compare each skid restoration alternative. The analysis is conducted on two levels. First, a traditional deterministic life-cycle cost analysis is completed; and second, a stochastic analysis of life-cycle cost follows, using a Monte Carlo simulation. The conclusion is that shot-blasting is an economically viable alternative to traditional methods for restoring lost skid resistance. Shotblasting also allows achievement of the desired engineering objective without consumption of additional asphalt binder or aggregate, thus making it an environmentally sustainable alternative as well.
Life-Cycle Cost Analysis of Surface Retexturing with Shotblasting as an Asphalt Pavement Preservation Tool
Transportation Research Record
Transportation Research Record: Journal of the Transportation Research Board ; 2108 , 1 ; 46-52
2009-01-01
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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