Problematic soil and rock conditions routinely have significant negative cost and schedule effects on transportation infrastructure projects. Many geoconstruction solutions to these problems face obstacles that prevent broader and effective utilization. SHRP 2 Project R02 investigated the state of practices of transportation project engineering, geotechnical engineering, and earthwork construction and identified and assessed methods to advance the use of these technologies. Several of the identified technologies, although underused, offer significant potential to achieve one or more SHRP 2 Renewal objectives: (1) rapid renewal of transportation facilities, (2) minimal disruption of traffic, and (3) production of long-lived facilities. Project R02 encompasses a broad spectrum of materials, processes, and technologies that are applicable to (1) new embankment and roadway construction over unstable ground, (2) roadway and embankment widening, and (3) stabilization of pavement working platforms. This report describes the work, results, and products of Phase 2 of SHRP 2 Project R02, Geotechnical Solutions for Soil Improvement, Rapid Embankment Construction, and Stabilization of the Pavement Working Platform. The selection of an appropriate geoconstruction technology to use in transportation systems is a complex undertaking that depends on the integration of available knowledge and a number of problem-specific and site-specific factors. A web-based information and guidance system, Geotechnical Solutions for Transportation Infrastructure, was developed to provide access to critical information on geoconstruction technologies and to provide a tool to assist in deciding which technologies are potentially applicable to site-specific conditions. Forty-six ground improvement and geoconstruction technologies and processes are included in the system. The system contains a technology catalogue and a technology selection assistance tool, as well as sections on design philosophy and a glossary. User products for each technology include technology fact sheets, photographs, case histories, design procedures, quality control/quality assurance procedures, cost estimating tools, specification guidance, and a bibliography. This web-based system collects, synthesizes, integrates, and organizes a vast amount of important information in a system that makes the information readily accessible. (Author/publisher)
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