{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/78516"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/78516","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Pavement sustainability optimization using quarry by-products and geosynthetics","abstract":"Sustainability has become a major concern in the construction industry, especially highway construction. In the U.S, significant effort is being exerted to quantify the environmental emissions associated with construction and production of materials used in pavement construction. The increased aggregate demand by the construction industry has resulted in increased production of quarry by-products (QB) and overall energy consumption because of the production of aggregates. The use of geosynthetics and QB in unbound material pavement applications can mitigate the high demand for natural aggregates, thus reducing the depletion of natural aggregates, environmental emissions, and energy consumption caused by stockpiling of QB and aggregate production. The use of geosynthetics at the subgrade/base interface has been adopted by many states in the U.S, and design standards have shown that this particular application results in a reduction of aggregate base thickness or increase the pavement service life; however, limited studies have been conducted to assess the environmental impacts caused by the production and use of geosynthetics in pavement applications. While the use of QB in pavement applications can reduce the consumption of natural aggregates and, consequently, all associated environmental burdens, there are no developed guidelines and specifications on using QB in these applications. A pilot study intended to develop specifications and guidelines for the use of QB and assess the environmental impacts of pavement materials was conducted at the University of Illinois at Urbana-Champaign (UIUC). A detailed laboratory study was conducted to characterize the engineering properties of QB materials, produced in the primary, secondary, and tertiary aggregate production stages. The results show that the unconfined compressive strength of QB materials is very low, and chemical admixtures, such as Portland cement and Class “C” fly ash, were used to improve the strength properties of QB materials. In general, treated QB materials were 10 to 30 times stronger than the virgin QB samples. Such significant increases in the strength of stabilized QB materials may indicate suitability of QB for sustainable pavement applications. Under a similar study, the environmental impacts of using geosynthetics in pavement were assessed. The results show that that the use of geosynthetics in pavement may reduce environmental emissions by 6.5%, and total energy by 2.7% compared with conventional pavements.","abstract_html":"Sustainability has become a major concern in the construction industry, especially highway construction. In the U.S, significant effort is being exerted to quantify the environmental emissions associated with construction and production of materials used in pavement construction. The increased aggregate demand by the construction industry has resulted in increased production of quarry by-products (QB) and overall energy consumption because of the production of aggregates. The use of geosynthetics and QB in unbound material pavement applications can mitigate the high demand for natural aggregates, thus reducing the depletion of natural aggregates, environmental emissions, and energy consumption caused by stockpiling of QB and aggregate production. The use of geosynthetics at the subgrade/base interface has been adopted by many states in the U.S, and design standards have shown that this particular application results in a reduction of aggregate base thickness or increase the pavement service life; however, limited studies have been conducted to assess the environmental impacts caused by the production and use of geosynthetics in pavement applications. While the use of QB in pavement applications can reduce the consumption of natural aggregates and, consequently, all associated environmental burdens, there are no developed guidelines and specifications on using QB in these applications. A pilot study intended to develop specifications and guidelines for the use of QB and assess the environmental impacts of pavement materials was conducted at the University of Illinois at Urbana-Champaign (UIUC). A detailed laboratory study was conducted to characterize the engineering properties of QB materials, produced in the primary, secondary, and tertiary aggregate production stages. The results show that the unconfined compressive strength of QB materials is very low, and chemical admixtures, such as Portland cement and Class “C” fly ash, were used to improve the strength properties of QB materials. In general, treated QB materials were 10 to 30 times stronger than the virgin QB samples. Such significant increases in the strength of stabilized QB materials may indicate suitability of QB for sustainable pavement applications. Under a similar study, the environmental impacts of using geosynthetics in pavement were assessed. The results show that that the use of geosynthetics in pavement may reduce environmental emissions by 6.5%, and total energy by 2.7% compared with conventional pavements.","abstract_has_math":false,"creators":["Mwumvaneza, Vincent"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Civil Engineering","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-07-22T22:17:53Z","date_published":"2015-07-22T22:17:53Z","updated_at":"2026-07-22T22:26:11Z","subjects":["Sustainability","Pavement","Quarry By-Products","Geosynthetics","Geotextile"],"languages":["en"],"rights":["Copyright 2015 Vincent Mwumvaneza"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/78516","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Mwumvaneza, Vincent"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-07-22T22:17:53Z","2015-05","2015-04-29","2015-5"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Civil Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Sustainability","Pavement","Quarry By-Products","Geosynthetics","Geotextile"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2015 Vincent Mwumvaneza"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/78516"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Sustainability has become a major concern in the construction industry, especially highway construction. In the U.S, significant effort is being exerted to quantify the environmental emissions associated with construction and production of materials used in pavement construction. The increased aggregate demand by the construction industry has resulted in increased production of quarry by-products (QB) and overall energy consumption because of the production of aggregates. The use of geosynthetics and QB in unbound material pavement applications can mitigate the high demand for natural aggregates, thus reducing the depletion of natural aggregates, environmental emissions, and energy consumption caused by stockpiling of QB and aggregate production. The use of geosynthetics at the subgrade/base interface has been adopted by many states in the U.S, and design standards have shown that this particular application results in a reduction of aggregate base thickness or increase the pavement service life; however, limited studies have been conducted to assess the environmental impacts caused by the production and use of geosynthetics in pavement applications. While the use of QB in pavement applications can reduce the consumption of natural aggregates and, consequently, all associated environmental burdens, there are no developed guidelines and specifications on using QB in these applications. A pilot study intended to develop specifications and guidelines for the use of QB and assess the environmental impacts of pavement materials was conducted at the University of Illinois at Urbana-Champaign (UIUC). A detailed laboratory study was conducted to characterize the engineering properties of QB materials, produced in the primary, secondary, and tertiary aggregate production stages. The results show that the unconfined compressive strength of QB materials is very low, and chemical admixtures, such as Portland cement and Class “C” fly ash, were used to improve the strength properties of QB materials. In general, treated QB materials were 10 to 30 times stronger than the virgin QB samples. Such significant increases in the strength of stabilized QB materials may indicate suitability of QB for sustainable pavement applications. Under a similar study, the environmental impacts of using geosynthetics in pavement were assessed. The results show that that the use of geosynthetics in pavement may reduce environmental emissions by 6.5%, and total energy by 2.7% compared with conventional pavements.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2015-07-22 without embargo terms","The student, Vincent Mwumvaneza, accepted the attached license on 2015-04-27 at 17:16.","The student, Vincent Mwumvaneza, submitted this Thesis for approval on 2015-04-27 at 17:25.","This Thesis was approved for publication on 2015-04-29 at 16:13.","DSpace SAF Submission Ingestion Package generated from Vireo submission #8134 on 2015-07-22 at 10:34:21","Made available in DSpace on 2015-07-22T22:17:53Z (GMT). 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The increased aggregate demand by the construction industry has resulted in increased production of quarry by-products (QB) and overall energy consumption because of the production of aggregates. The use of geosynthetics and QB in unbound material pavement applications can mitigate the high demand for natural aggregates, thus reducing the depletion of natural aggregates, environmental emissions, and energy consumption caused by stockpiling of QB and aggregate production. The use of geosynthetics at the subgrade/base interface has been adopted by many states in the U.S, and design standards have shown that this particular application results in a reduction of aggregate base thickness or increase the pavement service life; however, limited studies have been conducted to assess the environmental impacts caused by the production and use of geosynthetics in pavement applications. While the use of QB in pavement applications can reduce the consumption of natural aggregates and, consequently, all associated environmental burdens, there are no developed guidelines and specifications on using QB in these applications. A pilot study intended to develop specifications and guidelines for the use of QB and assess the environmental impacts of pavement materials was conducted at the University of Illinois at Urbana-Champaign (UIUC). A detailed laboratory study was conducted to characterize the engineering properties of QB materials, produced in the primary, secondary, and tertiary aggregate production stages. The results show that the unconfined compressive strength of QB materials is very low, and chemical admixtures, such as Portland cement and Class “C” fly ash, were used to improve the strength properties of QB materials. In general, treated QB materials were 10 to 30 times stronger than the virgin QB samples. Such significant increases in the strength of stabilized QB materials may indicate suitability of QB for sustainable pavement applications. Under a similar study, the environmental impacts of using geosynthetics in pavement were assessed. The results show that that the use of geosynthetics in pavement may reduce environmental emissions by 6.5%, and total energy by 2.7% compared with conventional pavements.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2015-07-22 without embargo terms","The student, Vincent Mwumvaneza, accepted the attached license on 2015-04-27 at 17:16.","The student, Vincent Mwumvaneza, submitted this Thesis for approval on 2015-04-27 at 17:25.","This Thesis was approved for publication on 2015-04-29 at 16:13.","DSpace SAF Submission Ingestion Package generated from Vireo submission #8134 on 2015-07-22 at 10:34:21","Made available in DSpace on 2015-07-22T22:17:53Z (GMT). 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