Pavement performance as measured by transverse cracking was found to be more pronounced in thin AC overlays than in thick AC overlays. The testing suite included Cantabro, stability/flow, Texas overlay, Illinois Flexibility Index Test (I-FIT), fatigue, modulus, creep, and Hamburg rutting. This report provides a compilation of findings and recommendations from all stages of these projects. This report documents final material testing, performance data collection of distress and profile surveys after construction. Two interim reports that documented project construction and performance to date have been previously published. Appropriate overlay thickness calculation and estimation of optimal.
Asphalt concrete overlay pdf#
This final report is the third report on this research project. Request PDF Asphalt concrete crack propagation parameters from XFEM modelling of the Texas Overlay Test Paris’ power law is commonly used to describe transverse thermal cracking propagation. The life cycle length of pavement with asphalt concrete material (ACM) surfacing is. The study of these projects prior to construction, during construction, and for a short monitoring period after construction is intended to determine the impact of various pre-existing pavement conditions, pavement cross-section, mix design, and material properties on the ultimate performance of the asphalt concrete (AC) overlay.
The ABR varied from 15% to 60% in the experimental sections. Utilizing Lab Tests To Predict Asphalt Concrete Overlay PerformanceĪ series of five experimental projects and three demonstration projects were constructed to better understand the performance of pavement overlays using various levels of asphalt binder replacement (ABR) from reclaimed asphalt pavement (RAP), recycled asphalt shingles (RAS), and crushed concrete.
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