Construction, Instrumentation, and Testing of Fast-Setting Hydraulic Cement Concrete in Palmdale, California
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2000-08-01
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Abstract:To minimize the lane closure time for construction, Caltrans is exploring the use of fast-setting hydraulic cement concrete (FSHCC). The principal property of the FSHCC is its high early strength gain. This accelerated strength gain would increase the lane-km productivity of urban rehabilitation projects (within a construction window of 67 hours, or 10 a.m. Friday to 5 a.m. the following Monday) and therefore allow normal traffic to resume 4 to 8 hours after maintenance or rehabilitation action had been taken. Due to the growing need for quick rehabilitation on congested freeways, Caltrans has initiated laboratory and full-scale research projects to check the viability of FSHCC in long-life pavement rehabilitation projects. The Palmdale project work includes installation of internal (embedded in the pavement) and external pavement instrumentation, construction material sampling and testing, full-scale accelerated pavement testing on the field-constructed FSHCC pavements using the Caltrans Heavy Vehicle Simulator No. 2 (HVS2), and monitoring of the loaded and unloaded test sections with respect to dynamic and environmental loading. The project work also includes a laboratory component to validate the field HVS results, and computer modeling and analysis as outlined in the Test Plan for CAL/APT Goal LLPRS - Rigid Phase III report (2). This report details the FSHCC field construction, instrumentation, and strength testing of the field HVS test site on State Route 14 near Palmdale, California, which took place from June 5-18, 1998. Due to size of document, the document has been divided into two PDF files accessed from an HTML front page. 157 p.
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