MECHANISTIC EVALUATION OF LIME-MODIFIED ASPHALT CONCRETE MIXTURES
محتوى المقالة الرئيسي
الملخص
Frequently, Load associated mode of failure (rutting and fatigue) as well as, occasionally, moisture damage in some sections poorly drained are the main failure types found in some of the newly constructed road within Baghdad as well as other cities in Iraq. The use of hydrated lime in pavement construction could be one of the possible steps taken in the direction of improving pavement performance and meeting the required standards. In this study, the mechanistic properties of asphalt concrete mixes modified with hydrated lime as a partial replacement of limestone dust mineral filler were evaluated. Seven replacement rates were used; 0,0.5, 1, 1.5, 2, 2.5 and 3 percent by weight of aggregate. Asphalt concrete mixes were prepared at their optimum asphalt content and then tested to evaluate their engineering properties which include moisture damage, resilient modulus, permanent deformation and fatigue characteristics. These properties have been evaluated using indirect tensile strength, uniaxial repeated loading and repeated flexural beam tests. Mixes modified with hydrated lime were found to have improved fatigue and permanent deformation characteristics, also showed lower moisture susceptibility and high resilient modulus. The use of 2 percent hydrated lime as a partial replacement of mineral filler has added to local knowledge the ability to produce more durable asphalt concrete mixtures with better serviceability.
تفاصيل المقالة
كيفية الاقتباس
تواريخ المنشور
المراجع
AI (1981), “Thickness Design-Asphalt Pavements for Highways and Streets”, Asphalt Institute, Manual Series No.1, College Park, Maryland, USA.
Albayati, A.H., (2006),"Permanent Deformation Prediction of Asphalt Concrete Under Repeated Loading" Ph.D. Thesis, Baghdad University.
Alkhashab. Y.Y.,(2009), "Development of Fatigue Prediction Model for Local Asphalt Paving Materials" Ph.D. Thesis, Baghdad University.
Al-Suhaibani, AbdulRahman, Al-Mudaiheem, Jamal, and Al-Fozan, Fahd, "Effect of Filler Type and Content on Properties of Asphalt Concrete Mixes," Effects of Aggregates and Mineral Fillers on Asphalt Mixture Performance, ASTM STP 1147, Richard C.
Meininger, Editor, American Society for Testing and Materials, Philadelphia , pp. 107-130.
Atud, T.J., Kanitpong, K., and Martono, W. 2007. “Laboratory Evaluation of Hydrated Lime Application Process in Asphalt Mixture for Moisture Damage and Rutting Resistance.” Transportation Research Board 86th Annual Meeting CD-ROM, Paper No. 1508, Washington, D.C.
Baig, M.G. and Wahhab, H.I.A. 1998. “Mechanistic Evaluation of Hedmanite and Lime Modified Asphalt Concrete Mixtures.” Journal of Materials of Civil Engineering, Vol. 10, No. 3, pp. 153-160.
Barksdale, R. (1972). “Laboratory Evaluation of Rutting in Base Course Materials”, Proceedings, Third International Conference on the Structural Design of Asphalt Pavements, London.
Epps, J., Berger, E., and Anagnos, J. N. (2003). “Treatments.” Moisture Sensitivity of Asphalt Pavements, A National Seminar, Transportation Research Board, Miscellaneous Report, Transportation Research Board, Washington D. C., pp. 117-186.
Khattak, M.J. and Kyatham, V. 2008. “Visco-Elastic Behavior of Asphalt Matrix & HMA under Moisture Damage Condition.” Transportation Research Board 87th Annual Meeting CD-ROM, Washington, D.C.
Khosla, N.P., Birdshall, B.G., Kawaguchi, S. 2000. “Evaluation of Moisture Susceptibility of Asphalt Mixtures, Conventional and New Methods.” Transportation Research Record: Journal of the Transportation Research Board, No. 1728, Transportation Research Board of the National Academies, Washington, D.C., pp.43- 51.
Little, D.N. and Petersen, J.C. 2005. “Unique Effects of Hydrated Lime Filler on the Performance- Related Properties of Asphalt Cements: Physical and Chemical Interactions Revisited.” Journal of Materials in Civil Engineering, Volume 17, No.
, pp.207-218.
McCann, M. and Sebaaly, P.E. 2003. “Evaluation of Moisture Sensitivity and Performance of Lime in Hot Mix Asphalt: Resilient Modulus, Tensile Strength, and Simple Shear Tests.” Transportation Research Record: Journal of the Transportation Research Board, No. 1832, Transportation Research Board of the National Academies, Washington, D.C., pp.9-16.
McGennis, R. B., Kennedy, T. W., and Machemehl, R. B. (1984). “Stripping and moisture damage in asphalt mixtures.” Center for Transportation Research, Bureau of Engineering Research, The University of Texas at Austin.
Mohammad, L.N., Abadie, C., Gokmen, R. and Puppala, A.J. 2000. “Mechanistic Evaluation of Hydrated Lime in Hot-Mix Asphalt mixtures” Transportation Research Record: Journal of the Transportation Research Board, No. 1723, pp.26-36.
Monismith, C., Ogawa, N. and Freeme, C. (1975). “Permanent Deformation Characteristics of Subgrade Soils due to Repeated Loadings”, TRR 537.
Paul, Harold R. 1995. “Compatibility of Aggregate, Asphalt Cement and Antistrip Materilas.” Louisiana Transportation Research Center, Report No. FHWA/LA-95-292.
Petersen, J.C., Plancher, H. and Harnsberger, P.M. 1987. “Lime Treatment of Asphalt to Reduce Age Harding and Improve Flow Properties.” Journal of the Association of Asphalt Paving Technologists, Volume 56, pp.633-653.
SCRB/R9 (2003). General Specification for Roads and Bridges, Section R/9, Hot-Mix Asphalt Concrete Pavement, Revised Edition. State Corporation of Roads and Bridges, Ministry of Housing and Construction, Republic of Iraq.
Sebaaly, P.E., Hitti, E. and Weitzel, D. 2003. “Effectiveness of Lime in Hot Mix Asphalt Pavements.” Transportation Research Record: Journal of the Transportation Research Board, No. 1832, Transportation Research Board of the National Academies, Washington, D.C., pp.34-41.
Shahrour, M.A., and Saloukeh, B.G. 1992 “Effect of Quality and Quantity of Locally Produced Filler (Passing Sieve No. 200) on Asphaltic Mixtures in Dubai,” Effects of Aggregates and Mineral Fillers on Asphalt Mixture Performance, ASTM
STP 1147, Richard C. Meininger, Editor, American Society for Testing and Materials, Philadelphia, pp.187-208.