Characteristics of Crack Spacing and Crack Width of Continuously Reinforced Concrete Pavement Based on Long-Term Field Surveys

장기간 현장조사를 통한 연속철근 콘크리트 포장의 균열간격과 균열폭 특성 분석

Oh, Han Jin;Cho, Young Kyo;Kim, Seong-Min

  • Received : 2016.03.17
  • Accepted : 2016.06.07
  • Published : 2016.06.15


PURPOSES : The purpose of this study is to investigate characteristics of crack spacing and crack width and their relationship in continuously reinforced concrete pavement (CRCP) based on the data obtained from long-term field observations. METHODS : The crack spacings and crack widths are measured periodically over 10 years at two different CRCP sections: one with asphalt bond breaker beneath concrete slab, and the other with bonded lean concrete base beneath concrete slab. The effects of steel ratio, type of underlying layer, terminal treatment method, and seasonal temperature change on the crack characteristics are evaluated by analyzing the measured data. RESULTS : The CRCP with lean concrete base shows smaller crack spacings than those of the CRCP with asphalt bond breaker. As the steel ratio increases, both the crack spacing and crack width tend to decrease. The crack width becomes larger as the crack age increases, but once the crack age is over a certain value the crack width tends to converge. When the terminal anchor lug system is not used and the expansion joints are employed at the terminals, the crack spacings and crack widths increase near the terminal sections. The crack spacing and crack width seem to be proportional each other, but not necessarily linearly, and their relationship is more distinguished in the summer when the crack widths become smaller. CONCLUSIONS : The steel ratio, underlying layer type, terminal treatment method, and seasonal temperature change affect the characteristics of cracks and the crack spacing and crack width are related to each other.


continuously reinforced concrete pavement;crack spacing;crack width;field survey;steel ratio;terminal;underlying layer


  1. Ahn, S. S. (2006). "A comparative study of CRCP and JCP performance with 20-year field data in Jung-bu Expressway," Doctoral Dissertation, Hanyang University.
  2. FHWA (1993). "Report on the 1992 U.S. tour of European concrete highways," Report No. FHWA-SA-93-012, Federal Highway Administration.
  3. FHWA (2007). "Long-life concrete pavements in Europe and Canada," Report No. FHWA-PL-07-027, Federal Highway Administration.
  4. Ha, S. J., Yeon, J. H. and Won, M. C., (2012a). "CRCP ME Design Guide,"Research Report 0-5832, Texas Tech University.
  5. Ha, S. J., Yeon, J., H., Choi, B., H., Jumg. Y., S., Zollinger, D., G., Wimsatt, A., and Won., M., C. (2012b). "Development mechanistic-empirical design for CRCP," Research Report 0-5832-1, Texas Tech University.
  6. Kim, S. M., Cho, B. H. and Kwon, S. M. (2006). "Behavior of continuously reinforced concrete pavement under moving vehicle loads and effect of steel ratio,"International Journal of Highway Engineering, Vol. 8, No. 1, pp. 119-130.
  7. McCullough, B. F. and Dossey, T. (1999a). "Considerations for high-performance concrete paving: recommendations from 20 years of field experience in Texas," Transportation Research Record, No. 1684, pp. 17-24.
  8. McCullough, B. F. and Dossey, T. (1999b). "Controlling early-age cracking in continuously reinforced concrete pavement observations from 12 years of monitoring experimental test sections in Houston, Texas," Transportation Research Record, No. 1684, pp. 35-43.
  9. Mokarem, D. W., Galal, K. A. and Sprinkel, M. M. (2007). "Performance evaluation of bonded concrete pavement overlays after eleven years," Transportation Research Record, No. 2005, pp. 1-16.
  10. Nam, J. H., Kim, D. H., Choi, S. and Won, M. C. (2007). "Variation of crack width over time in continuously reinforced concrete pavement," Transportation Research Record, No. 2037, pp. 3-11.
  11. Plessis, L., Strauss, P. and Kilian, A. (2011). "Monitoring the behaviour of thin reinforced concrete pavements through accelerated pavement testing," Geotechnical Special Publication, pp. 43-50.
  12. Roesler, J. R., Popovics, J. S., Ranchero, J. L., Mueller, M. and Lippert, D. (2005). "Longitudinal cracking distress on continuously reinforced concrete pavements in illinois,"Journal of Performance of Constructed Facilities, Vol. 19, No. 4, pp. 331-338.
  13. Ryu, S. W., Park M. Y., Nam J. H., An Z. O., Bae J. O., Cho Y. H. and Lee S. W. (2009). "Initial behavior of thin-bonded continuously reinforced concrete overlay CRCO on aged jointed concrete pavement," GeoHunan International Conference, Geotechnical Special Publication, pp. 101-106.
  14. Ryu, S. W., Saraf, S. and Won, M. C. (2012). "Project level performance database for rigid pavements in Texas, II," Research Report 0-6274-1, Texas Tech University.
  15. Suh, Y. C., Hankins, K., and McCullough, B. F. (1992). "Early-age behavior of continuously reinforced concrete pavement and calibrationof the failure prediction model in CRCP-7 program," Research Report 1244-3, Center for Transportation Research, The University of Texas at Austin.
  16. Sun, R. J., Cobos, L. and Won, M. C. (2011a). "Behavior of the longitudinal construction joint of continuously reinforced concrete pavement," Geotechnical Special Publication, No. 212, ASCE, pp. 200-207.
  17. Sun, R. J., Won, H. and Won, M. C. (2011b) "The application and early-age behaviors of continuously reinforced bonded concrete overlay of distressed jointed concrete pavements," Geotechnical Special Publication, No. 212, pp. 208-215.
  18. Volle, T. H. (2001). "Thin bonded concrete overlays in illinois:preliminary report on performance," Transportation Research Record, No. 1778, pp. 156-163.


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