This study compares the performance of a conventional flexible pavement (bituminous surface with granular base and subbase over untreated soil) with the performance of pavement designs incorporating lime stabilized soils. Included in the project were seven experimental sections each 1/4 mile long having various thicknesses of base and subbase and percentages of lime incorporated into the embankment soil. The report describes the soils, testing, design, construction and performance of the project. The lime stabilized test
sections cost more and had more cracking and lower present serviceability indexes than the control sections.
This study was initiated to evaluate the performance of various seed mixtures, fertilizers, mulches and other products which are used in the control of vegetation and erosion on roadside areas
As will be noted from the General Introduction 16 years has passed since the project started. Formal field work was terminated in 1970. However, casual observations of the field plots, research areas, procedures and/or materials have continued until now. About 11 formal reports, published articles or formal paper presentations have resulted from the work Three revised Standards and Specification books with three supplements issued since the start of the present work reflect the findings, along with a revised construction manual.
A formal research project such as this one, formally funded by another agency, in this case the former Bureau of Public Roads (now the Federal Highway Administration) requires a formal project completion. This report is that document for this project.
