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INVESTIGATION OF AGENTS OF PRACTICAL USE TO STABILIZE SLOPES AND EROSION ALONG THE I-55 CORRIDOR SOUTH OF SIKESTON, MISSOURI

16. Abstract Disturbed, remolded and undisturbed samples of Mississippi River embayment soils were tested for the use of agents to improve their behavior, to reduce their erosion and to overcome their problematic tendencies for slope failures along the I-55 corridor south of Sikeston, Missouri. Both a mixture of 50% quicklime-50% class C fly ash from Sikeston, and lime kiln dust (Code L) were found effective when added to the soils at the 12% by dry weight of soil level. The addition of these agents, because the treatments are believed to be permanent, is economical because of the elimination of almost yearly rebuilding of slopes in the area. 17. ACKNOWLEDGEMENTS The principal investigator wished to thank the Missouri Department of Transportation for their support of this project. The Research, Development and Technology Division was instrumental in providing this support. The Material Division, especially the Geotechnical Branch, was instrumental in approving the project concept and providing support. The principal investigator wishes to recognize the many fine efforts of Tom Fennessey, senior materials research engineer for MoDOT during this project. His coordination and assistance were instrumental in its success. The principal investigator wishes to thank the personnel of District 10 of MoDOT who assisted in this project. Mike Myers, District Geologist was involved in initially finding slopes, providing the Fly Ash used, and coordinating sampling efforts. William Chasteen and Ron Underwood, Operations Engineers, were helpful in identifying the problem and slopes where failures had occurred. The maintenance personnel at Hayti provided sampling sites and the equipment and labor to obtain the large bulk samples. The success of this project was dependent on the efforts of all these individuals. The principal investigator wishes to thank the Civil Engineering Department at UMR for the facilities to conduct this research and the student research assistants who worked on the project. Mr. Bob Myers, Graduate Research Assistant, conducted most of the preparation and testing of soils, supervised an undergraduate research assistant and coordinated and managed the laboratory. He coordinated equipment and procedures being used, and provided valuable input for this report. Mr. Bryan Gregory, Undergraduate Research Assistant, joined the team on this project for the summer 2000 semester. He earned upper level credit for his participation. He assisted in preparation of soil samples, manufacturing of specimens for test and accomplishment of standard soil mechanics testing. EXECUTIVE SUMMARY The incidents of shallow to moderately deep slope failures in …