Technical Report Documentation Page 1. Report No. FHWA/TX-08/0-5179-1 2. Government Accession No. 3. Recipient's Catalog No. 4. Title and Subtitle DEEP SOIL MIXING TECHNOLOGY FOR MITIGATION OF 5. Report Date October 2007 Published: August 2008 PAVEMENT ROUGHNESS 6. Performing Organization Code 7. Author(s) Anand J. Puppala, Raja Sekhar Madhyannapu, Soheil Nazarian, Deren Yuan, and Laureano Hoyos 8. Performing Organization Report No. Report 0-5179-1 9. Performing Organization Name and Address Department of Civil Engineering The University of Texas at Arlington, Arlington, Texas 76019-0308 Department of Civil and Environmental Engineering The University of Texas at El Paso, El Paso, Texas 79968 10. Work Unit No. (TRAIS) 11. Contract or Grant No. Project 0-5179 12. Sponsoring Agency Name and Address Texas Department of Transportation Research and Technology Implementation Office P. O. Box 5080 Austin, Texas 78763-5080 13. Type of Report and Period Covered Technical Report: September 2004 – August 2007 14. Sponsoring Agency Code 15. Supplementary Notes Project performed in cooperation with the Texas Department of Transportation and the Federal Highway Administration. Project Title: Deep Mixing Technology for Mitigation of Pavement Roughness URL: http://tti.tamu.edu/documents/0-5179-1.pdf 16. Abstract The effectiveness of Deep Soil Mixing (DSM) treatment method was evaluated in terms of reducing heave movements of underlying expansive soils. Several binder types were used to treat expansive soils and these methods are considered in a laboratory investigation to select the appropriate binders for field DSM studies. Laboratory studies indicated that a combined binder treatment approach of using lime and cement was the appropriate method for field studies. Two pilot scale test sections were then designed and installed on DSM soil columns. Anchor rods were used to fasten a biaxial geogrid to the DSM columns. Surcharge equivalent to loads from base and surface layers was placed on top of the DSM-geogrid sections through a fill placement. These treated test sections along with control sections on untreated soils were instrumented and monitored. Monitored results showed that soil shrink-swell related movements and pressures in both vertical and lateral directions were considerably less than those recorded in the untreated soil sections. Non- destructive studies using seismic methods showed the enhancements of shear strength in the treated zones. Overall, this research resulted in the development of a design methodology for stabilizing expansive clayey soils at considerable depths using DSM column treatment. 17. Key Words Deep Soil Mixing, Expansive Soils, Transverse Cracking, Longitudinal Cracking, Pavements, Cement, Lime 18. Distribution Statement No restrictions. This document is available to the public through NTIS: National Technical Information Service 5285 Port Royal Road Springfield, Virginia 22161, or http://www.ntis.gov 19. Security Classif.(of this report) Unclassified 20. Security Classif.(of this page) Unclassified 21. No. of Pages 342 22. Price Form DOT F 1700.7 (8-72) Reproduction of completed page authorized
DEEP SOIL MIXING TECHNOLOGY FOR MITIGATION OF PAVEMENT ROUGHNESS
Jun 26, 2023
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Related Documents
