Won, Moon Primary Author mixed material bibliography San Francisco 2008 id Indonesia

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Continuously reinforced concrete pavement (CRCP) allows the concrete to form cracks to relieve stresses resulting from temperature and moisture variations. The cracks are held tight by longitudinal reinforcement. CRCP performance has been quite satisfactory in Texas and the Texas Department of Transportation (TxDOT) made it a policy to use CRCP when a rigid pavement is selected for a project. To further enhance CRCP performance, TxDOT sponsored several research studies; this paper presents the findings made so far. Extensive field evaluations found (1) almost no correlations between crack spacing and crack width, (2) crack widths decreasing over time, and (3) almost no changes in load transfer efficiencies at cracks between winter and summer. These findings contradict the hypotheses widely accepted in pavement research community. Existing punchout mechanisms were evaluated for their validity. It appears that other mechanisms are more prevalent. Many seeming punchouts are not truly structural distresses; rather, they are due to horizontal cracking at the mid-depth of the slab, which can be corrected by proper selection of materials and designs. Based on these findings, efforts are underway at TxDOT to improve design, material selection, and construction practices to further enhance the performance of CRCP. CONCRETE PAVEMENTS 625.8(063) Perpustakaan Direktorat Bina Teknik Jalan dan Jembatan Direktorat Jenderal Bina Marga - Kementerian Pekerjaan Umum (NPP: 3273244A00000001) 625.8(063) Won b 0000020410 My Library 625.8(063) Won b 19676 machine generated