{"id":{"repo_id":"carleton","oai_identifier":"oai:carleton.scholaris.ca:20.500.14718/32699"},"canonical_url":"https://search.dev.ndltd.org/etd/carleton/oai:carleton.scholaris.ca:20.500.14718/32699","repository":{"repo_id":"carleton","name":"Carleton University","base_url":"https://carleton.scholaris.ca/server/oai/request"},"display":{"title":"Enhancement of Shaft Capacity of Cast-in-Place Piles Using a Hook System","abstract":"This research investigates an innovative approach to improve the shaft bearing capacity of cast-in-place pile foundations by utilizing passive inclusions (Hooks) that will be mobilized if movement occurs in pile system. An extensive experimental program was developed to study the shaft bearing capacity of cast-in-place piles with and without hook system in soft clay and sand. First phase of the experiment was developed to investigate the effect of passive inclusion on pile-soil interface shear strength behaviour, employing a modified direct shear test apparatus. The interface strength obtained for pile-soil specimens was found to significantly increase when passive inclusions were implemented. Residual friction angle for concrete-sand interface increased from 22 degrees to 29.5 degrees when two hook elements were used at the pile-soil interface. The pile-clay adhesion was also increased from 19 kPa to 34 kPa.","abstract_html":"This research investigates an innovative approach to improve the shaft bearing capacity of cast-in-place pile foundations by utilizing passive inclusions (Hooks) that will be mobilized if movement occurs in pile system. An extensive experimental program was developed to study the shaft bearing capacity of cast-in-place piles with and without hook system in soft clay and sand. First phase of the experiment was developed to investigate the effect of passive inclusion on pile-soil interface shear strength behaviour, employing a modified direct shear test apparatus. The interface strength obtained for pile-soil specimens was found to significantly increase when passive inclusions were implemented. Residual friction angle for concrete-sand interface increased from 22 degrees to 29.5 degrees when two hook elements were used at the pile-soil interface. The pile-clay adhesion was also increased from 19 kPa to 34 kPa.","abstract_has_math":false,"creators":["Abou El Hosn, Ghazi"],"institution":"Carleton University","degree_name":"Master of Applied Science (M.App.Sc.)","degree_level":"Master's","degree_discipline":"Engineering, Civil","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015","date_published":"2015","updated_at":"2026-07-24T01:34:20Z","subjects":[],"languages":["en"],"rights":["Copyright © 2015 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner."],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.doi","label":"DOI","values":["10.22215/etd/2015-11030"],"render_values":[{"text":"10.22215/etd/2015-11030","href":"https://doi.org/10.22215/etd/2015-11030","code":true}]}]},"links":{"outbound_url":"https://hdl.handle.net/20.500.14718/32699","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Abou El Hosn, Ghazi"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2025-04-08T17:48:56Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2025-04-08T17:48:56Z"]},{"key":"dc:date.issued","label":"Date","values":["2015"]},{"key":"dc:publisher","label":"Institution","values":["Carleton University"]},{"key":"dc:type","label":"Dc Type","values":["thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Engineering, Civil"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Master's"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Applied Science (M.App.Sc.)"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright © 2015 the author(s). 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First phase of the experiment was developed to investigate the effect of passive inclusion on pile-soil interface shear strength behaviour, employing a modified direct shear test apparatus. The interface strength obtained for pile-soil specimens was found to significantly increase when passive inclusions were implemented. Residual friction angle for concrete-sand interface increased from 22 degrees to 29.5 degrees when two hook elements were used at the pile-soil interface. The pile-clay adhesion was also increased from 19 kPa to 34 kPa."]},{"key":"dc:title","label":"Title","values":["Enhancement of Shaft Capacity of Cast-in-Place Piles Using a Hook System"]}]}],"canonical_facts":{"dc:creator":["Abou El Hosn, Ghazi"],"dc:date.accessioned":["2025-04-08T17:48:56Z"],"dc:date.available":["2025-04-08T17:48:56Z"],"dc:date.issued":["2015"],"dc:description.abstract":["This research investigates an innovative approach to improve the shaft bearing capacity of cast-in-place pile foundations by utilizing passive inclusions (Hooks) that will be mobilized if movement occurs in pile system. An extensive experimental program was developed to study the shaft bearing capacity of cast-in-place piles with and without hook system in soft clay and sand. First phase of the experiment was developed to investigate the effect of passive inclusion on pile-soil interface shear strength behaviour, employing a modified direct shear test apparatus. The interface strength obtained for pile-soil specimens was found to significantly increase when passive inclusions were implemented. Residual friction angle for concrete-sand interface increased from 22 degrees to 29.5 degrees when two hook elements were used at the pile-soil interface. The pile-clay adhesion was also increased from 19 kPa to 34 kPa."],"dc:identifier.doi":["10.22215/etd/2015-11030"],"dc:identifier.uri":["https://hdl.handle.net/20.500.14718/32699"],"dc:language.iso":["en"],"dc:publisher":["Carleton University"],"dc:rights":["Copyright © 2015 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. 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