Excogitated Composite Multifunctional Layer for Pavement Systems

摘要

The study evaluated a three-dimensional excogitated composite multifunctional(ECM) layer design for pavement construction. Research was conducted in the design and selection of materials that would satisfy the geometry and multi-functional requirements of the ECM layer in a pavement system. Major emphasis was placed in the development of lightweight and strong materials that can easily be deployed into rapid and economical pavement construction using available construction equipment. Both natural and synthetic materials were investigated for the ECM layer. The layer strength increased signficantly by changing the polymer blend in the polythylene structure and by using a stiffer geotextile. The load-deflection relationship and shear stress for ECM layer also showed improvements. Results of large-scale laboratory tests showed satisfactory and improved performance of the composite layer.