{"id":{"repo_id":"sherbrooke","oai_identifier":"oai:usherbrooke.scholaris.ca:11143/1380"},"canonical_url":"https://search.dev.ndltd.org/etd/sherbrooke/oai:usherbrooke.scholaris.ca:11143/1380","repository":{"repo_id":"sherbrooke","name":"Université de Sherbrooke","base_url":"https://usherbrooke.scholaris.ca/server/oai/request"},"display":{"title":"Étude des recouvrements avec effet de barrière capillaire pour minimiser les infiltrations d'eau dans les sites d'enfouissement de matières résiduelles","abstract":"This thesis concerns the performance of an alternative low hydraulic conductivity cover for landfills, i.e. covers with capillary barrier effect (CCBE). The use of recycled materials, such as DBP, as parts of such covers has the advantage of reducing the quantity of waste to be disposed of (DBP used to be landfilled as waste), while offering an efficient control to the infiltration of water into the landfill, thereby reducing the amount of leachate produced. Given its water retention characteristics, DBP can also help to control biogas emissions. An experimental cell at Saint-Tite-des-Caps landfill, Québec, was designed to be a low permeability cover and to increase the effectiveness of biogas collection. The design procedure of the cover is based on the capillary barrier principle. As a consequence, the water retention curve (WRC) and the hydraulic conductivity functions (HCF) of materials are fundamental. The design procedure included optimization of the thicknesses of the several layers composing the barrier and determination of the transfer length (TL) using an appropriate model. The latter had to be shorter than the total length of the cell (30 m), in order to allow for verification of the design hypothesis. The objective of this project was to evaluate the performance of the CCBE, infiltration was measured by means of lysimeters. The quantities of water recovered in these lysimeters were frequently obtained. In addition, the temporal evolutions of the matric suction and the volumetric water content of the various layers were monitored using dataloggers. Water content data made it possible to determine both the infiltration rate through the DBP layer, which eventually reached the capillary barrier, and the hydraulic conductivity of the material. The latter varies between 7,0 × 10 -9 m/s and 5,0 × 10-11 m/s, in the field. Another important result of this study was the determination transfer length, that is to say the length beyond which water infiltrates in the waste.This length is about 23 m for the cover at Saint-Tite-des-Capes. The total flow rate that could reach the wastes, 4,7 10 × -10 m/s, was estimated based on lysimeter data from 134 days of monitoring. The DCB of Saint-Tite-des-Caps was modelled using SEEP/W, a saturated/unsaturated flow software.This study made it possible to evaluate the performance of the capillary barrier, and the additional layer forming the DCB. The repercussions of this project are numerous. For example, it made it possible to continue to advance in the study of the behaviour of the capillary barriers, to verify analytical approaches used to evaluate its performance (transfer length, hydraulic conductivity, quantity of water which infiltrates). Moreover, one could evaluate the performance of the lysimeters installed.","abstract_html":"This thesis concerns the performance of an alternative low hydraulic conductivity cover for landfills, i.e. covers with capillary barrier effect (CCBE). The use of recycled materials, such as DBP, as parts of such covers has the advantage of reducing the quantity of waste to be disposed of (DBP used to be landfilled as waste), while offering an efficient control to the infiltration of water into the landfill, thereby reducing the amount of leachate produced. Given its water retention characteristics, DBP can also help to control biogas emissions. An experimental cell at Saint-Tite-des-Caps landfill, Québec, was designed to be a low permeability cover and to increase the effectiveness of biogas collection. The design procedure of the cover is based on the capillary barrier principle. As a consequence, the water retention curve (WRC) and the hydraulic conductivity functions (HCF) of materials are fundamental. The design procedure included optimization of the thicknesses of the several layers composing the barrier and determination of the transfer length (TL) using an appropriate model. The latter had to be shorter than the total length of the cell (30 m), in order to allow for verification of the design hypothesis. The objective of this project was to evaluate the performance of the CCBE, infiltration was measured by means of lysimeters. The quantities of water recovered in these lysimeters were frequently obtained. In addition, the temporal evolutions of the matric suction and the volumetric water content of the various layers were monitored using dataloggers. Water content data made it possible to determine both the infiltration rate through the DBP layer, which eventually reached the capillary barrier, and the hydraulic conductivity of the material. The latter varies between 7,0 × 10 -9 m/s and 5,0 × 10-11 m/s, in the field. Another important result of this study was the determination transfer length, that is to say the length beyond which water infiltrates in the waste.This length is about 23 m for the cover at Saint-Tite-des-Capes. The total flow rate that could reach the wastes, 4,7 10 × -10 m/s, was estimated based on lysimeter data from 134 days of monitoring. The DCB of Saint-Tite-des-Caps was modelled using SEEP/W, a saturated/unsaturated flow software.This study made it possible to evaluate the performance of the capillary barrier, and the additional layer forming the DCB. The repercussions of this project are numerous. For example, it made it possible to continue to advance in the study of the behaviour of the capillary barriers, to verify analytical approaches used to evaluate its performance (transfer length, hydraulic conductivity, quantity of water which infiltrates). Moreover, one could evaluate the performance of the lysimeters installed.","abstract_has_math":false,"creators":["El Ghabi, Baligh"],"institution":"Université de Sherbrooke","degree_name":"M. Sc. A.","degree_level":"Maîtrise","degree_discipline":"Génie civil","degree_department":null,"school":null,"contributors":[],"advisors":["Cabral, Alexandre"],"committee_chairs":[],"committee_members":[],"year":2007,"date_issued":"2007","date_published":"2007","updated_at":"2026-07-27T21:07:51Z","subjects":[],"languages":["fr"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/11143/1380","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Cabral, Alexandre"]},{"key":"dc:creator","label":"Author","values":["El Ghabi, Baligh"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2014-05-14T19:51:43Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2014-05-14T19:51:43Z"]},{"key":"dc:date.issued","label":"Date","values":["2007"]},{"key":"dc:publisher","label":"Institution","values":["Université de Sherbrooke"]},{"key":"dc:type","label":"Dc Type","values":["Mémoire de maîtrise"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Génie civil"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Maîtrise"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M. Sc. A."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Université de Sherbrooke"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["fr"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/11143/1380"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["This thesis concerns the performance of an alternative low hydraulic conductivity cover for landfills, i.e. covers with capillary barrier effect (CCBE). The use of recycled materials, such as DBP, as parts of such covers has the advantage of reducing the quantity of waste to be disposed of (DBP used to be landfilled as waste), while offering an efficient control to the infiltration of water into the landfill, thereby reducing the amount of leachate produced. Given its water retention characteristics, DBP can also help to control biogas emissions. An experimental cell at Saint-Tite-des-Caps landfill, Québec, was designed to be a low permeability cover and to increase the effectiveness of biogas collection. The design procedure of the cover is based on the capillary barrier principle. As a consequence, the water retention curve (WRC) and the hydraulic conductivity functions (HCF) of materials are fundamental. The design procedure included optimization of the thicknesses of the several layers composing the barrier and determination of the transfer length (TL) using an appropriate model. The latter had to be shorter than the total length of the cell (30 m), in order to allow for verification of the design hypothesis. The objective of this project was to evaluate the performance of the CCBE, infiltration was measured by means of lysimeters. The quantities of water recovered in these lysimeters were frequently obtained. In addition, the temporal evolutions of the matric suction and the volumetric water content of the various layers were monitored using dataloggers. Water content data made it possible to determine both the infiltration rate through the DBP layer, which eventually reached the capillary barrier, and the hydraulic conductivity of the material. The latter varies between 7,0 × 10 -9 m/s and 5,0 × 10-11 m/s, in the field. Another important result of this study was the determination transfer length, that is to say the length beyond which water infiltrates in the waste.This length is about 23 m for the cover at Saint-Tite-des-Capes. The total flow rate that could reach the wastes, 4,7 10 × -10 m/s, was estimated based on lysimeter data from 134 days of monitoring. The DCB of Saint-Tite-des-Caps was modelled using SEEP/W, a saturated/unsaturated flow software.This study made it possible to evaluate the performance of the capillary barrier, and the additional layer forming the DCB. The repercussions of this project are numerous. For example, it made it possible to continue to advance in the study of the behaviour of the capillary barriers, to verify analytical approaches used to evaluate its performance (transfer length, hydraulic conductivity, quantity of water which infiltrates). Moreover, one could evaluate the performance of the lysimeters installed.","Ce mémoire traite la performance d'un type de couverture à faible perméabilité, soit les couvertures avec effet de barrière capillaire (CEBC). L'utilisation de matériaux recyclés, comme composante de ce type de recouvrement, tels les sous-produits de désencrage (SPD), matériau issu du recyclage du papier, a l'avantage d'une part de réduire la quantité de déchets à enfouir et, d'autre part, de mieux contrôler l'infiltration des eaux dans un site d'enfouissement et ainsi minimiser la génération de lixiviat. De par ses caractéristiques de rétention d'eau, les SPD peuvent aider aussi à contrôler les émissions de biogaz. Une cellule expérimentale sur le lieu d'enfouissement de Saint-Tite-des-Caps a été conçue pour le but d'imperméabiliser d'avantage le site, de diminuer la production de déchets en valorisant les SPD et d'augmenter l'efficacité de collecte de biogaz. La procédure de conception de la couverture est basée sur le principe de barrière capillaire, si bien que les courbes de rétention d'eau (CRE) et les fonctions de conductivités hydrauliques (FCH) des matériaux sont fondamentales. La conception vise à optimiser les épaisseurs des couches de la barrière capillaire de façon d'obtenir une longueur de transfert (L T) un peu inférieur à celle de la cellule expérimentale (30 m). L'objectif de ce projet de maîtrise était d'évaluer la performance de la CEBC. Pour ce faire, les infiltrations ont été mesurées au moyen de lysimètres. Les quantités d'eau récupérées dans ces lysimètres et les évolutions temporelles de la succion matricielle et la teneur en eau volumique des différentes couches ont été suivies. Le suivi de ces paramètres a permis de déterminer le débit d'infiltration à travers le système de recouvrement, la conductivité hydraulique non saturée de la couche des SPD - laquelle varie entre 7.0 x 10-9 mis et 5 x 10-11 mis. Un autre résultat important de cette étude a été la détermination de la longueur de transfert, soit la longueur avant laquelle l'eau est dévié et ne s'infiltre pas dans les déchets. Cette longueur est de l'ordre de 23 m pour le site de St-Tite-des-Caps. Une estimation du débit d'infiltration susceptible de s'infiltrer dans les déchets considérant l'hypothèse d'une longueur de transfert de 23 m donne un débit de 4.7 x 10-10 m/s pour une période de 134 jours. La CEDBC de Saint-Tite-des-Caps a été modélisée à l'aide du logiciel SEEP/W, cette étude de modélisation a permis d'évaluer la pertinence de la barrière capillaire comme couche additionnel formant une couverture avec double effet de barrière capillaire. Les retombées de ce projet sont nombreuses. Entre autres, il a permis de continuer à avancer dans les études du comportement/réponse des barrières capillaires, de vérifier des approches analytiques pour évaluer sa performance (longueur de transfert, conductivité hydraulique, quantité d'eau qui s'infiltre). De plus, on a pu évaluer la performance des lysimètres installés. 11"]},{"key":"dc:title","label":"Title","values":["Étude des recouvrements avec effet de barrière capillaire pour minimiser les infiltrations d'eau dans les sites d'enfouissement de matières résiduelles"]}]}],"canonical_facts":{"dc:contributor.advisor":["Cabral, Alexandre"],"dc:creator":["El Ghabi, Baligh"],"dc:date.accessioned":["2014-05-14T19:51:43Z"],"dc:date.available":["2014-05-14T19:51:43Z"],"dc:date.issued":["2007"],"dc:description.abstract":["This thesis concerns the performance of an alternative low hydraulic conductivity cover for landfills, i.e. covers with capillary barrier effect (CCBE). The use of recycled materials, such as DBP, as parts of such covers has the advantage of reducing the quantity of waste to be disposed of (DBP used to be landfilled as waste), while offering an efficient control to the infiltration of water into the landfill, thereby reducing the amount of leachate produced. Given its water retention characteristics, DBP can also help to control biogas emissions. An experimental cell at Saint-Tite-des-Caps landfill, Québec, was designed to be a low permeability cover and to increase the effectiveness of biogas collection. The design procedure of the cover is based on the capillary barrier principle. As a consequence, the water retention curve (WRC) and the hydraulic conductivity functions (HCF) of materials are fundamental. The design procedure included optimization of the thicknesses of the several layers composing the barrier and determination of the transfer length (TL) using an appropriate model. The latter had to be shorter than the total length of the cell (30 m), in order to allow for verification of the design hypothesis. The objective of this project was to evaluate the performance of the CCBE, infiltration was measured by means of lysimeters. The quantities of water recovered in these lysimeters were frequently obtained. In addition, the temporal evolutions of the matric suction and the volumetric water content of the various layers were monitored using dataloggers. Water content data made it possible to determine both the infiltration rate through the DBP layer, which eventually reached the capillary barrier, and the hydraulic conductivity of the material. The latter varies between 7,0 × 10 -9 m/s and 5,0 × 10-11 m/s, in the field. Another important result of this study was the determination transfer length, that is to say the length beyond which water infiltrates in the waste.This length is about 23 m for the cover at Saint-Tite-des-Capes. The total flow rate that could reach the wastes, 4,7 10 × -10 m/s, was estimated based on lysimeter data from 134 days of monitoring. The DCB of Saint-Tite-des-Caps was modelled using SEEP/W, a saturated/unsaturated flow software.This study made it possible to evaluate the performance of the capillary barrier, and the additional layer forming the DCB. The repercussions of this project are numerous. For example, it made it possible to continue to advance in the study of the behaviour of the capillary barriers, to verify analytical approaches used to evaluate its performance (transfer length, hydraulic conductivity, quantity of water which infiltrates). Moreover, one could evaluate the performance of the lysimeters installed.","Ce mémoire traite la performance d'un type de couverture à faible perméabilité, soit les couvertures avec effet de barrière capillaire (CEBC). L'utilisation de matériaux recyclés, comme composante de ce type de recouvrement, tels les sous-produits de désencrage (SPD), matériau issu du recyclage du papier, a l'avantage d'une part de réduire la quantité de déchets à enfouir et, d'autre part, de mieux contrôler l'infiltration des eaux dans un site d'enfouissement et ainsi minimiser la génération de lixiviat. De par ses caractéristiques de rétention d'eau, les SPD peuvent aider aussi à contrôler les émissions de biogaz. Une cellule expérimentale sur le lieu d'enfouissement de Saint-Tite-des-Caps a été conçue pour le but d'imperméabiliser d'avantage le site, de diminuer la production de déchets en valorisant les SPD et d'augmenter l'efficacité de collecte de biogaz. La procédure de conception de la couverture est basée sur le principe de barrière capillaire, si bien que les courbes de rétention d'eau (CRE) et les fonctions de conductivités hydrauliques (FCH) des matériaux sont fondamentales. La conception vise à optimiser les épaisseurs des couches de la barrière capillaire de façon d'obtenir une longueur de transfert (L T) un peu inférieur à celle de la cellule expérimentale (30 m). L'objectif de ce projet de maîtrise était d'évaluer la performance de la CEBC. Pour ce faire, les infiltrations ont été mesurées au moyen de lysimètres. Les quantités d'eau récupérées dans ces lysimètres et les évolutions temporelles de la succion matricielle et la teneur en eau volumique des différentes couches ont été suivies. Le suivi de ces paramètres a permis de déterminer le débit d'infiltration à travers le système de recouvrement, la conductivité hydraulique non saturée de la couche des SPD - laquelle varie entre 7.0 x 10-9 mis et 5 x 10-11 mis. Un autre résultat important de cette étude a été la détermination de la longueur de transfert, soit la longueur avant laquelle l'eau est dévié et ne s'infiltre pas dans les déchets. Cette longueur est de l'ordre de 23 m pour le site de St-Tite-des-Caps. Une estimation du débit d'infiltration susceptible de s'infiltrer dans les déchets considérant l'hypothèse d'une longueur de transfert de 23 m donne un débit de 4.7 x 10-10 m/s pour une période de 134 jours. La CEDBC de Saint-Tite-des-Caps a été modélisée à l'aide du logiciel SEEP/W, cette étude de modélisation a permis d'évaluer la pertinence de la barrière capillaire comme couche additionnel formant une couverture avec double effet de barrière capillaire. Les retombées de ce projet sont nombreuses. Entre autres, il a permis de continuer à avancer dans les études du comportement/réponse des barrières capillaires, de vérifier des approches analytiques pour évaluer sa performance (longueur de transfert, conductivité hydraulique, quantité d'eau qui s'infiltre). De plus, on a pu évaluer la performance des lysimètres installés. 11"],"dc:identifier.uri":["https://hdl.handle.net/11143/1380"],"dc:language.iso":["fr"],"dc:publisher":["Université de Sherbrooke"],"dc:title":["Étude des recouvrements avec effet de barrière capillaire pour minimiser les infiltrations d'eau dans les sites d'enfouissement de matières résiduelles"],"dc:type":["Mémoire de maîtrise"],"thesis:degree_discipline":["Génie civil"],"thesis:degree_level":["Maîtrise"],"thesis:degree_name":["M. Sc. A."],"thesis:institution_name":["Université de Sherbrooke"]},"updated_at":"2026-07-27T21:07:51Z"}