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Behavior and Performance of Continuously Reinforced Concrete Pavement



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.


Ketersediaan

0000020410625.8(063) Won bMy LibraryTersedia

Informasi Detail

Judul Seri
9th International Conference On Concrete Pavements, San Francisco, California, August 17-21, 2008.
No. Panggil
625.8(063) Won b
Penerbit San Francisco : .,
Deskripsi Fisik
-
Bahasa
Indonesia
ISBN/ISSN
-
Klasifikasi
625.8(063)
Tipe Isi
-
Tipe Media
-
Tipe Pembawa
-
Edisi
-
Subjek
Info Detail Spesifik
-
Pernyataan Tanggungjawab

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