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Consideration of moisture effect on load bearing capacity in texas flexible pavements KSCE Journal of Civil Engineering July 2010, Volume 14, Issue 4, pp 493–501 | Cite as Jeong Ho Oh (1) E. G. Fernando (1) Woojin Lee (2) 1. Texas Transportation Institute, College Station, Texas, USA 2. Dept. of Civil and Environmental Engineering, Korea University, Seoul, Korea Article First Online: 03 June 2010 Received: 24 November 2008 Revised: 24 November 2009 Accepted: 04 December 2009 535 Downloads 5 Citations
Abstract Variation of moisture content within substructures of pavements plays a key role in controlling load bearing capacity tied to adjust strength parameter and resilient modulus of subsoil layers to corresponding moisture level. This paper presents efforts to develop the LoadGage computer program for estimating pavement load bearing capacity accounting for in-situ moisture condition. From results of plate bearing tests, it was observed that the current modified triaxial design method which has been adopted by the Texas Department of Transportation (TxDOT) as a design check procedure relatively underestimates pavement load bearing capacity. In view of the moisture conditioning that samples undergo in the existing triaxial test method, the adjustment of subgrade strength parameters based on the soil-water characteristic curve provided a rational approach for considering the difference in moisture conditions between laboratory tests conducted to characterize strength parameters for pavement design and the field conditions expected in-service. Validating the LoadGage program was achieved via a series of plate bearing tests, and it revealed reasonable estimations compared to field observations especially in pavements built with stabilized layers.
Keywords moisture content load bearing capacity soil-water characteristic
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References Bulut, R., Lytton, R. L., and Wray, W. K. (2001). “Suction measurements by filter paper.” Expansive Clay Soils and Vegetative Influence on Shallow Foundations, ASCE Geotechnical Special Publication No. 115 (eds. C. Vipulanandan, M.B. Addison, and M. Hasen), ASCE, Reston, VA, pp. 243– 261. Google Scholar (http://scholar.google.com/scholar_lookup? title=Suction%20measurements%20by%20filter%20paper&author=R..%20Bulut&author=R.%20L..%20Lytton&author=W.%20K..%20Wray&pages =243-261&publication_year=2001) Fernando, E. G., Oh, J., and Liu, W. (2007). LoadGage user’s guide, Product 0-4519-P3, Texas Transportation Institute, Texas A&M University, College Station, TX. Google Scholar (http://scholar.google.com/scholar_lookup? title=LoadGage%20user%E2%80%99s%20guide&author=E.%20G..%20Fernando&author=J..%20Oh&author=W..%20Liu&publication_year=2007) Ferando, E. G.., Liu, W., Lee, T., and Scullion, T. (2001). The Texas modified triaxial design program, Research Report 1869-3, Texas Transportation Institute, Texas A&M University, College Station, TX. Google Scholar (http://scholar.google.com/scholar_lookup? title=The%20Texas%20modified%20triaxial%20design%20program&author=E.%20G...%20Ferando&author=W..%20Liu&author=T..%20Lee&auth or=T..%20Scullion&publication_year=2001) Fernando, E. G., Oh, J., Estakhri, C., and Nazarian, S. (2007). Verification of the load-thickness design curves in the modified triaxial design method, Research Report 0-4519-1, Texas Transportation Institute, Texas A&M University, College Station, TX. Google Scholar (http://scholar.google.com/scholar_lookup?title=Verification%20of%20the%20loadthickness%20design%20curves%20in%20the%20modified%20triaxial%20design%20method&author=E.%20G..%20Fernando&author=J..%20Oh& author=C..%20Estakhri&author=S..%20Nazarian&publication_year=2007) Fredlund, D. G. and Rahardjo, H. (1993). Soil mechanics for unsaturated soils, John Wiley & Sons, Inc., N.Y. Google Scholar (http://scholar.google.com/scholar_lookup? title=Soil%20mechanics%20for%20unsaturated%20soils&author=D.%20G..%20Fredlund&author=H..%20Rahardjo&publication_year=1993) Gardner, W. R. (1958). “Some steady state solutions of the unsaturated moisture flow equation with application of evaporation from a water table.” Soil Science, Vol. 85,Issue 4, pp. 228–232. CrossRef (https://doi.org/10.1097/00010694-195804000-00006) Google Scholar (http://scholar.google.com/scholar_lookup? title=Some%20steady%20state%20solutions%20of%20the%20unsaturated%20moisture%20flow%20equation%20with%20application%20of%20e vaporation%20from%20a%20water%20table&author=W.%20R..%20Gardner&journal=Soil%20Science&volume=85&issue=Issue4&pages=228232&publication_year=1958) McDowell, C. (1955). “Wheel-load stress computations related to flexible pavement design.” Bulletin 114, Highway Research Board, Washington, D.C., pp. 1–20. Google Scholar (https://scholar.google.com/scholar?q=McDowell%2C%20C.%20%281955%29.%20%E2%80%9CWheelload%20stress%20computations%20related%20to%20flexible%20pavement%20design.%E2%80%9D%20Bulletin%20114%2C%20Highway%20 Research%20Board%2C%20Washington%2C%20D.C.%2C%20pp.%201%E2%80%9320.) Oh, J., Ryu, D., Fernando, E. G., and Lytton, R. L. (2006). “Estimation of expected moisture contents for pavements by environmental and soil characteristics.” Transportation Research Record, Journal of the Transportation Research Board, No. 1967, Transportation Research Board, Washington, D.C., pp. 135–147. Google Scholar (http://scholar.google.com/scholar_lookup? title=Estimation%20of%20expected%20moisture%20contents%20for%20pavements%20by%20environmental%20and%20soil%20characteristics& author=J..%20Oh&author=D..%20Ryu&author=E.%20G..%20Fernando&author=R.%20L..%20Lytton&pages=135-147&publication_year=2006) Titus-Glover, L. and Fernando, E. G. (1995). Evaluation of pavement base and subgrade material properties and test procedures, Research Report 1335-2, Texas Transportation Institute, Texas A&M University, College Station, TX. 503–511 Google Scholar (http://scholar.google.com/scholar_lookup? title=Evaluation%20of%20pavement%20base%20and%20subgrade%20material%20properties%20and%20test%20procedures&author=L..%20Titu s-Glover&author=E.%20G..%20Fernando&publication_year=1995)
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About this article Cite this article as: Oh, J.H., Fernando, E.G. & Lee, W. KSCE J Civ Eng (2010) 14: 493. https://doi.org/10.1007/s12205-010-0493-x DOI (Digital Object Identifier) https://doi.org/10.1007/s12205-010-0493-x Publisher Name Korean Society of Civil Engineers Print ISSN 1226-7988 Online ISSN 1976-3808 About this journal Reprints and Permissions
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