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<p>Rehabilitation of pavement considers a widely portion of the budget of any highway agencies. To satisfy a balance between performance and costs it needs to optimum rehabilitation and maintenance program. The effects of rehabilitation types are analysed in this paper that directly influence the long-term effectiveness of rehabilitated jointed plain concrete pavements (JPCP) and jointed reinforced concrete pavements (JRCP). The data used in the study were drawn from the Long-Term Pavement Performance Studies’ Specific Pavement Study (SPS) SPS-6 experiment that contains 162 test sections from 13 states. After data filtration from irregularity and missing data, a number of 11 states with 85 sections were used for the analysis. The mainly rehabilitation types were used are routine maintenance, minimum restoration, maximum restoration, crack and seat, and finally rubblized. The performance of several rehabilitation type options were analysed as a function of the climatic data, traffic data, subgrade type, pavement structure (overlay, slab and base thicknesses), type of pavement (plain or reinforced), distresses (Faulting, rutting and fatigue cracking) and international roughness index (IRI). The rehabilitation types include surface preparation (routine maintenance, minimum restoration and maximum restoration) with a 102&#xa0;mm (4in) design thick AC overlay or without an overlay, crack and seat with two AC overlay design thicknesses (102–203&#xa0;mm (4 or 8 inches)), and limited surface preparation with rubblized. The results and analysis showed that for all JPCP and JRCP sections the rubblized type satisfy less average value in faulting and IRI than other rehabilitation types. The average faulting values in wet climate conditions are more than dry climate conditions and the average rutting values in dry climate conditions are more than wet climate conditions. In addition, the average IRI or fatigue cracking values in dry climate conditions are more than wet climate conditions. It is noticed that the maximum restoration type satisfy less average value in fatigue cracking than other rehabilitation types. The average fatigue cracking values in dry climate conditions are more than wet climate conditions. The rehabilitation with rubblized performed better than all other rehabilitation types on the faulting and IRI, but routine maintenance performed better on the rutting and maximum restoration performed better on fatigue cracking. The trends of faulting and rutting increased with overlay and Portland Cement Concrete (PCC) thicknesses increased. Also, the trends of IRI decreased with overlay and PCC thicknesses increased and the trends of fatigue cracking decreased with overlay and PCC thicknesses increased. The results of statistical analysis of variance (ANOVA) showed that the variation in routine maintenance and rubblized types had the highest statistical effect between performance indicators as IRI prediction model is introduced, while other rehabilitation types did not have any significant effect.</p>

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Analysis on Effects of Different Rehabilitation Techniques on Performance of Jointed Plain and Reinforced Concrete Pavement

  • 期刊论文

  • 发表日期：

    2025年3月12日

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  • Ahmed Abdelghani Mahmoud

摘要

Rehabilitation of pavement considers a widely portion of the budget of any highway agencies. To satisfy a balance between performance and costs it needs to optimum rehabilitation and maintenance program. The effects of rehabilitation types are analysed in this paper that directly influence the long-term effectiveness of rehabilitated jointed plain concrete pavements (JPCP) and jointed reinforced concrete pavements (JRCP). The data used in the study were drawn from the Long-Term Pavement Performance Studies’ Specific Pavement Study (SPS) SPS-6 experiment that contains 162 test sections from 13 states. After data filtration from irregularity and missing data, a number of 11 states with 85 sections were used for the analysis. The mainly rehabilitation types were used are routine maintenance, minimum restoration, maximum restoration, crack and seat, and finally rubblized. The performance of several rehabilitation type options were analysed as a function of the climatic data, traffic data, subgrade type, pavement structure (overlay, slab and base thicknesses), type of pavement (plain or reinforced), distresses (Faulting, rutting and fatigue cracking) and international roughness index (IRI). The rehabilitation types include surface preparation (routine maintenance, minimum restoration and maximum restoration) with a 102 mm (4in) design thick AC overlay or without an overlay, crack and seat with two AC overlay design thicknesses (102–203 mm (4 or 8 inches)), and limited surface preparation with rubblized. The results and analysis showed that for all JPCP and JRCP sections the rubblized type satisfy less average value in faulting and IRI than other rehabilitation types. The average faulting values in wet climate conditions are more than dry climate conditions and the average rutting values in dry climate conditions are more than wet climate conditions. In addition, the average IRI or fatigue cracking values in dry climate conditions are more than wet climate conditions. It is noticed that the maximum restoration type satisfy less average value in fatigue cracking than other rehabilitation types. The average fatigue cracking values in dry climate conditions are more than wet climate conditions. The rehabilitation with rubblized performed better than all other rehabilitation types on the faulting and IRI, but routine maintenance performed better on the rutting and maximum restoration performed better on fatigue cracking. The trends of faulting and rutting increased with overlay and Portland Cement Concrete (PCC) thicknesses increased. Also, the trends of IRI decreased with overlay and PCC thicknesses increased and the trends of fatigue cracking decreased with overlay and PCC thicknesses increased. The results of statistical analysis of variance (ANOVA) showed that the variation in routine maintenance and rubblized types had the highest statistical effect between performance indicators as IRI prediction model is introduced, while other rehabilitation types did not have any significant effect.