详情

原文传递 PERFORMANCE PROBLEMS OF OPEN-GRADED DRAINAGE LAYERS UNDER CONTINUOUSLY REINFORCED CONCRETE PAVEMENTS IN ILLINOIS.

题名：	PERFORMANCE PROBLEMS OF OPEN-GRADED DRAINAGE LAYERS UNDER CONTINUOUSLY REINFORCED CONCRETE PAVEMENTS IN ILLINOIS.
作者：	Heckel-L
关键词：	ILLINOIS-; OPEN-GRADED-DRAINAGE-LAYERS; CONTINUOUSLY-REINFORCED-CONCRETE-PVMTS; PAVEMENT-DISTRESS; VISUAL-SURVEYS; CORE-ANALYSIS; DEFLECTION-TESTS; SLABS-; INSPECTIONS-; CAUSES-; COMPATIBILITY-; SEPARATION-LAYERS; CEMENT-CONTENT; REINFORCING-STEELS; EPOXY-COATINGS; PAVEMENT-DESIGN; PATCHING-MAINTENANCE; UNDERSEALING-
摘要：	Illinois has constructed 14 pavements that contain open-graded drainage layers (OGDLs). The pavement types include continuously reinforced concrete pavements (CRCPs), jointed pavements, and full-depth asphalt concrete pavements. Three of the CRCPs have begun to show a higher level of distress than would be expected from pavements of that cross section and age. An in-depth investigation into the cause of the distress has begun and is expected to be completed early in 1997. The investigation includes visual distress surveys, core analysis, analysis of Shelby tube samples, deflection tests, and inspection of slabs removed in patching operations. The state has placed a moratorium on the construction of new OGDLs pending the outcome of the investigation. The investigation indicates that possible causes of the problems are the incompatibility of the OGDL and CRCP, the lack of a separation layer on two of the three sections, the cement content in the OGDL, the percentage of reinforcing steel and epoxy-coating of the steel in the slab, and the design of the CRCP and shoulders. The current maintenance plan includes patching and undersealing of problem areas. No recommendations for the future use of OGDLs can be made until the investigation narrows the possible causes.
总页数：	Transportation Research Record. 1997. (1596) pp51-57 (3 Fig., 9 Tab., 15 Ref.)
报告类型：	科技报告