The Effectiveness of the Fly-Ash Slurry Injection Method to Eliminate Depressed Transverse Cracks

摘要: One of the primary causes increasing roughness in asphalt pavements Kansas has been naturally occurring transverse cracks. Maintenance forces continually tried to seal cracks; however, cracks continued grow wider and depressions deeper. A review history cracking on I-70 western half reveals that very wide (top down) developed cold weather no suitable treatments were available from 1960s through 1980s. It was common have about 60 ft apart, 4 5 in. wide, depressed 2 3 extended across all lanes. In this study, nature extent determined. pavement investigation conducted determine effectiveness Fly Ash Slurry Injection (FASI) method (a crack stabilization procedure) eliminate or minimize depression (bump) caused by both sides The intent FASI fill subsurface voids at severely distressed delay reflective cracking, because structurally sufficient for traffic loading. initial objective study find a low-cost "maintenance" approach improve ride filling their associated depression. variety products application procedures attempted, with variable results. Most attempts re-cracked within year, soon followed.