Construction and Performance of Highway Soil Subgrades Modified with AtmosphericFluidized Bed Conbustion Residue and Multicone Kiln Dust

摘要

In an effort to increase the utilization of by-product materials in highwayconstruction projects, the Kentucky Transportation Cabinet authorized the experimental use of residue from an atmospheric fluidized bed combustion (AFBC) process and multicone kiln dust (MKD), a by-product resulting from the production of lime, as subgrade soil modifiers. The report presents information relative to preconstruction and post-construction laboratory evaluations, construction procedures, construction monitoring activities, and performance evaluations of a highway subgrade soil modified using AFBC spent lime, MKD, Type 1P cement, and hydrated lime. An untreated section served as a control for the project located on Kentucky Route 11 in Lee and Wolfe Counties.