Monitoring and modeling of pavement response and performance task B : New York volume 2, I86 PCC.
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2012-05-01
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Alternative Title:Monitoring and modeling of pavement response and performance task B : New York Pooled Fund Project TPF-5 (121) volume 2, I86 PCC
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Edition:Technical report.
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Abstract:In Cattaraugus County, New York State, Interstate 86 exhibited major distresses, and the jointed reinforced ; portland cement concrete pavement (JRCP) and was in need of rehabilitation by 2004. Three experimental sections ; were constructed in June 2006 using an unbonded overlay of jointed plain concrete pavement (JPCP). In one section ; the existing JRCP was untreated, in another it was rubblized, and in the third section it was broken and seated (B&S). ; Embedded sensors monitored strain, temperature, and displacement responses. The research effort included periodic ; monitoring of stress and strains due to environmental loads and measurement of responses induced by a falling weight ; deflectometer (FWD) to account for dynamic loads. ; Results of this study suggest that thermal gradients in the concrete slabs induce highest vertical displacements ; (curling), strains, and stresses in the untreated section. From dynamic loads, the largest deflections and strains are ; induced in the rubblized and B&S sections, while the untreated section exhibits the least severe dynamic response. ; Environmental strain responses were typically more critical near the top surface of the concrete, often in tension, ; suggesting probable top-down cracking mechanisms. This research improves the understanding of the physical effects ; of these fracturing techniques on unbonded overlays through a fully monitored investigation using in-situ ; instrumentation.
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Main Document Checksum:urn:sha-512:a7d9e7fc9b719fa7a6c9391c05aa2113742b36c01e904fc742c50635846580dddf13d27f046f26c7d219016b10951d73c6792c382ba7d38a23f83002fc66be65