TY - CHAP
T1 - Utility Trench Backfill Compaction Using Vibratory Plate Compactor Versus Excavator-Mounted Hydraulic Plate Compactor
AU - Wang, Chaoyi
AU - Qiu, Tong
AU - Xiao, Ming
AU - Wang, Jintai
N1 - Funding Information:
Support of this study was provided by the Federal Highway Administration (FHWA), Pennsylvania Department of Transportation (PennDOT), and the Thomas D. Larson Pennsylvania Transportation Institute at the Pennsylvania State University. This support is gratefully acknowledged. The authors thank Mr. Joseph Cribben, P.E. of PennDOT Bureau of Project Delivery for his assistance with the project and comments on this paper. Any opinions, findings, and conclusions or recommendations expressed in this paper are those of the authors and do not necessarily reflect the views of FHWA and PennDOT.
Publisher Copyright:
© Springer Nature Singapore Pte Ltd. 2020.
PY - 2020
Y1 - 2020
N2 - Excavator-mounted hydraulic plate compactors have been widely used in utility trench backfill compaction due to their efficiency. However, there are industry concerns on the possibility of pipe damage due to the combination of static downward earth pressure exerted by the excavator arm and dynamic earth pressure induced by the excavator-mounted hydraulic plate compactor. This paper presents the results of a field study that aims to compare the performances of utility trench compaction using a conventional walk-behind vibratory plate compactor with a lift thickness of 200 mm (8 in.) and an excavator-mounted hydraulic plate compactor with a lift thickness of 200 mm (8 in.), 300 mm (12 in.), 450 mm (18 in.), and 600 mm (24 in.). A flexible PVC pipe was used. The field test results indicate that the excavator-mounted hydraulic plate compactor delivered comparable compacted dry mass densities with a lift thickness of 200 and 300 mm as the walk-behind vibratory plate compactor did with a lift thickness of 200 mm; however, the excavator-mounted hydraulic plate compactor was not able to consistently achieve adequate compacted dry mass densities with a lift thickness of 450 and 600 mm. The excavator-mounted hydraulic plate compactor induced larger dynamic vertical earth pressures than did the walk-behind vibratory plate compactor.
AB - Excavator-mounted hydraulic plate compactors have been widely used in utility trench backfill compaction due to their efficiency. However, there are industry concerns on the possibility of pipe damage due to the combination of static downward earth pressure exerted by the excavator arm and dynamic earth pressure induced by the excavator-mounted hydraulic plate compactor. This paper presents the results of a field study that aims to compare the performances of utility trench compaction using a conventional walk-behind vibratory plate compactor with a lift thickness of 200 mm (8 in.) and an excavator-mounted hydraulic plate compactor with a lift thickness of 200 mm (8 in.), 300 mm (12 in.), 450 mm (18 in.), and 600 mm (24 in.). A flexible PVC pipe was used. The field test results indicate that the excavator-mounted hydraulic plate compactor delivered comparable compacted dry mass densities with a lift thickness of 200 and 300 mm as the walk-behind vibratory plate compactor did with a lift thickness of 200 mm; however, the excavator-mounted hydraulic plate compactor was not able to consistently achieve adequate compacted dry mass densities with a lift thickness of 450 and 600 mm. The excavator-mounted hydraulic plate compactor induced larger dynamic vertical earth pressures than did the walk-behind vibratory plate compactor.
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U2 - 10.1007/978-981-15-2349-6_17
DO - 10.1007/978-981-15-2349-6_17
M3 - Chapter
AN - SCOPUS:85085181810
T3 - Lecture Notes in Civil Engineering
SP - 285
EP - 295
BT - Lecture Notes in Civil Engineering
PB - Springer
ER -