Annulus Void Fill Material for Rehabilitated Sliplined Culverts
Date
2023-03
Journal Title
Journal ISSN
Volume Title
Publisher
The University of Akron
Abstract
Sliplining is a method used by transportation agencies to rehabilitate deteriorated culverts. In recent years, ODOT discovered a number of sliplined culverts that did not have their annulus
void spaces completely filled. Such culverts experience distortion and settlement as well as reduced structural capacity. Field inspections of several sliplined culverts in Ohio in this study confirmed that the lack of complete annulus void filling is a prevalent problem. Filler grout properties, particularly poor flow characteristics, would prevent the grout from completely filling annulus voids. This led to the investigation of grout properties that are most important to achieve good flow and fillability. New mixture proportions of a controlled low-strength material (CLSM) and cellular grout C40 were developed based on extensive laboratory testing. These improved grouts were also mixed in a batching plant at a larger scale and were pumped over a 200-ft length at an upslope of 2.5% to determine the suitability of these grouts in practical applications. Grouting of the annulus voids of 20-foot-long sections was verified using a 36-inch liner pipe sliplined within a 48-inch host pipe. A suggested basis for changes to the relevant ODOT specifications in SS 837 is recommended.
Description
Report No.: FHWA/OH-2022-38
Performing Organization Name and Address: The University of Akron 302 Buchtel Commons Akron, OH 44325
Distribution Statement: No restrictions. This document is available to the public through the National Technical Information Service, Springfield, Virginia 22161
The version of record is available at: https://www.dot.state.oh.us/Divisions/Planning/SPR/Research/reportsandplans/Reports/Final%20Reports/Final%20Report%20SJN%20135965%20With%20all%20Appendices.pdf
Keywords
Citation
Patnaik, Anil, Abdullah Alzlfawi, and Shagata Das. “Annulus Void Fill Material for Rehabilitated Sliplined Culverts,” March 2023. https://www.dot.state.oh.us/Divisions/Planning/SPR/Research/reportsandplans/Reports/Final%20Reports/Final%20Report%20SJN%20135965%20With%20all%20Appendices.pdf.