In a previous study performed at Virginia Tech, a fixture was developed to evaluate the performance of joint sealants. This fixture simulates the movement of vehicles over a rigid pavement joint by applying cyclic shear loading. Slab expansion and contraction is simulated by applying a horizontal deflection to the sealant specimen. In the current study at Virginia Tech, the effect of the environment on the performance of joint sealants is investigated. Environmental factors, including exposure to UV light, exposure to moisture, and exposure to jet fuel are considered.
Environmental effects are to be included in a service life prediction model for sealants.
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