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Effect of Thickness and Addition of Fly Ash and Rice Husk Ash on Temperature Differential and Warping Stresses in Rigid Pavements


Affiliations
1 Ph.D. Research Scholar, Department of Civil Engineering, National Institute of Technology, Trichy-620015, India
2 Assistant Professor, Department of Civil Engineering, N.I.T., Trichy-620015, India
3 Associate Professor, Department of Civil Engineering, N.I.T., Trichy-620015, India
     

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Temperature is an important factor of influencing the functioning of concrete pavements. Pavement temperature differential causes thermal stresses in concrete pavements. The effects of the following factors on temperature differential and warping stresses in concrete pavement are studied: (a) Slab thickness, (b) Replacing the cement by 10% of fly ash and 5% of rice husk ash. Four slabs were cast, three without any addition of poyzalonic admixture, but with different thickness. The fourth slab was cast with the addition of 10% of fly ash and 5% of rice husk ash. The temperature is measured by using LM- 35 sensors and temperature indicator. The temperature data is analyzed by Quadratic equation i.e. linear temperature profile, non-linear temperature profile and axial temperature profile for all the slabs. Computation of warping stresses in the concrete pavement due to the pavement slab in a warped state because of linear and non-linear temperature gradients is evaluated by using Westergaard analysis with Bradbury coefficient. The results of Westergaard analysis with Bradbury coefficient and Quadratic equation analysis are compared.

Keywords

Pavement Thermal Stresses, Fly Ash, Rice Husk Ash, LM-35 Sensors, Temperature Indicator
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  • A.U Ravisnkar, CH.Nageshwar Rao, S.V.Rajeeva, Chandrashekhar.A and Bharath Kumar(2007). Fly ash and Rice husk ash concrete for rigid pavement. Indian High way.

  • Chou bane, B. and Tia, M. (1995). Analysis and Verification of Thermal- Gradient Effects on Concrete Pavement. Journal of Transportation Engineering, ASCE, Vol. 121, No. 1, pp. 75 – 81.

  • IRC: 58-2002 “Guidelines for design of plain jointed rigid pavements for highways’, Indian Roads Congress, New Delhi.

  • Tien Fang FWA and Wei LIU (2003) “Effect of Non linear Temperature distribution on thermal stresses in concrete pavements”, Journal of the Eastern Asia Society for Transportation Studies, Vol.5.

  • Westergaard, H. M. (1926). “Analysis of stresses in concrete pavements due to variations of temperature.” Proc., 6th Annual Meeting, Highway Research Board, Washington, D.C., pp.201-215.

  • X. P. Shi, T. F. Fwa and Y. Hu J. Zhang (2000) “Thick-Plate Model for Warping Stresses in Concrete Pavements”, International Journal of Pavement Engineering, Volume 1, Issue 2, Pages 107-117.


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  • Effect of Thickness and Addition of Fly Ash and Rice Husk Ash on Temperature Differential and Warping Stresses in Rigid Pavements

Abstract Views: 333  |  PDF Views: 0

Authors

S. Sreenivasulu
Ph.D. Research Scholar, Department of Civil Engineering, National Institute of Technology, Trichy-620015, India
S. Jayalekshmi
Assistant Professor, Department of Civil Engineering, N.I.T., Trichy-620015, India
R. Jayasankar
Associate Professor, Department of Civil Engineering, N.I.T., Trichy-620015, India

Abstract


Temperature is an important factor of influencing the functioning of concrete pavements. Pavement temperature differential causes thermal stresses in concrete pavements. The effects of the following factors on temperature differential and warping stresses in concrete pavement are studied: (a) Slab thickness, (b) Replacing the cement by 10% of fly ash and 5% of rice husk ash. Four slabs were cast, three without any addition of poyzalonic admixture, but with different thickness. The fourth slab was cast with the addition of 10% of fly ash and 5% of rice husk ash. The temperature is measured by using LM- 35 sensors and temperature indicator. The temperature data is analyzed by Quadratic equation i.e. linear temperature profile, non-linear temperature profile and axial temperature profile for all the slabs. Computation of warping stresses in the concrete pavement due to the pavement slab in a warped state because of linear and non-linear temperature gradients is evaluated by using Westergaard analysis with Bradbury coefficient. The results of Westergaard analysis with Bradbury coefficient and Quadratic equation analysis are compared.

Keywords


Pavement Thermal Stresses, Fly Ash, Rice Husk Ash, LM-35 Sensors, Temperature Indicator

References