Highway 400 precast concrete inlay panel project: Instrumentation plan, installation, and preliminary results

Daniel Pickel, Susan Tighe, Warren Lee, Rico Fung
2018 Canadian journal of civil engineering (Print)  
35 The Ministry of Transportation of Ontario (MTO) was interested in a rehabilitation 36 strategy that could be used to address deep-seated rutting issues encountered on its 400-series 37 highways. A precast concrete inlay panel (PCIP) rehabilitation design was developed and 38 constructed involving the installation of precast panels into partially-milled asphalt pavement. 39 Sub-surface instrumentation was installed at the PCIP-asphalt interface including earth 40 pressure cells (EPCs) and
more » ... ells (EPCs) and moisture sensors installed in six instrumentation clusters. This 41 instrumentation has been monitored to gather information regarding the PCIP trial installation. 42 Readings from the moisture sensors indicate that water penetrates beneath the PCIPs in 43 precipitation events, though these moisture levels recede under dry conditions, indicating that the 44 water can exit the sub-slab area. 45 Static load testing using a fully-load gravel truck was used to determine the different 46 support reactions caused by different loading configurations. Higher loads were generally found 47 beneath the joints in the two loading situations studied. 48 49
doi:10.1139/cjce-2018-0044 fatcat:qgnbr54sbfaxxmlogq464kux54