{"id":43594,"date":"2025-11-25T11:54:43","date_gmt":"2025-11-25T10:54:43","guid":{"rendered":"https:\/\/www.uni.lu\/fstm-en\/?post_type=core-researches&#038;p=43594"},"modified":"2025-11-28T15:51:51","modified_gmt":"2025-11-28T14:51:51","slug":"restart-resource-efficient-steel-recycled-aggregate-concrete-timber-hybrid-slim-floor-systems","status":"publish","type":"core-researches","link":"https:\/\/www.uni.lu\/fstm-en\/core-researches\/restart-resource-efficient-steel-recycled-aggregate-concrete-timber-hybrid-slim-floor-systems\/","title":{"rendered":"Resource Efficient Steel &#8211; recycled aggregate concrete &#8211; timber Hybrid Slim Floor Systems (ReStart)"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<p>ReStart develops an eco-friendly floor system that combines steel, RAC and timber, aiming to reduce material use, minimise waste, and lower carbon emissions.<\/p>\n","protected":false},"author":325,"featured_media":43595,"template":"","meta":{"featured_image_focal_point":{"x":0.53,"y":0.45},"show_featured_caption":false,"ulux_newsletter_groups":"","uluxPostTitle":"ReStart ","uluxPrePostTitle":"Research project","_trash_the_other_posts":false,"_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"rp_acronym":"ReStart ","rp_abstract":"The construction industry is a major contributor to global resource consumption and CO\u2082 emissions, making it a prime target for circular economy strategies. This project, ReStart, introduces a novel hybrid slim floor system integrating steel, recycled aggregate concrete (RAC), and timber to enhance resource efficiency and reduce carbon emissions. The system utilizes puzzle-shaped composite dowels to connect RAC slabs with steel beams and incorporates timber as both permanent formwork and part of timber-concrete composite slabs. The overarching aim is to enable a reliable and cost-effective nonlinear design of slim composite beams using RAC, with particular attention to time-dependent effects due to creep and shrinkage. The research is structured into three main objectives: (1) characterizing the shear behaviour of steel-RAC composite dowels and developing a mechanics-based resistance model; (2) investigating the impacts of RAC creep on dowel performance and ultimate shear resistance under varying stress levels and loading sequences; and (3) assessing the strain-limited plastic resistance of composite beams using steel-RAC composite dowels at the cross-section and member levels, considering the influence of compact cross-sections with a steel T-profile and long-term effects. The project will deliver new knowledge and analytical tools \u2014 including a shear resistance model for steel-RAC composite dowels, reduction factor for long-term effects, a moment reduction factor at the cross-section level \u2014 along with design recommendations for strain-limited plastic (nonlinear) design of composite beams using composite dowels.","rp_start_date":"2026-01-01 11:49:00","rp_duration":30,"rp_main_funder":"Fonds National de la Recherche (FNR), CORE (Junior)","rp_other_funders":[],"rp_external_partners":[],"rp_keywords":[],"rp_members":[{"name":"Qiuni FU","isPI":true,"isExternal":false,"featuredImageUrl":"https:\/\/www.uni.lu\/en\/person-image\/NTAwNzI4MTFfX1FpdW5pIEZV","detailsPageUrl":"https:\/\/www.uni.lu\/fstm-en\/people\/qiuni-fu\/","id":"50072811"},{"name":"Markus SCH\u00c4FER","isPI":false,"isExternal":false,"featuredImageUrl":"https:\/\/www.uni.lu\/en\/person-image\/NTAwMDI5OTFfX01hcmt1cyBTQ0jDhEZFUg==","detailsPageUrl":"https:\/\/www.uni.lu\/fstm-en\/people\/markus-schafer\/","id":"50002991"}]},"research-project-status":[],"research-project-type":[267],"field-of-interest":[287],"organisation":[47,29,64],"authorship":[325],"acf":[],"_links":{"self":[{"href":"https:\/\/www.uni.lu\/fstm-en\/wp-json\/wp\/v2\/core-researches\/43594"}],"collection":[{"href":"https:\/\/www.uni.lu\/fstm-en\/wp-json\/wp\/v2\/core-researches"}],"about":[{"href":"https:\/\/www.uni.lu\/fstm-en\/wp-json\/wp\/v2\/types\/core-researches"}],"author":[{"embeddable":true,"href":"https:\/\/www.uni.lu\/fstm-en\/wp-json\/wp\/v2\/users\/325"}],"version-history":[{"count":2,"href":"https:\/\/www.uni.lu\/fstm-en\/wp-json\/wp\/v2\/core-researches\/43594\/revisions"}],"predecessor-version":[{"id":43597,"href":"https:\/\/www.uni.lu\/fstm-en\/wp-json\/wp\/v2\/core-researches\/43594\/revisions\/43597"}],"wp:authorship":[{"embeddable":true,"href":"https:\/\/www.uni.lu\/fstm-en\/wp-json\/wp\/v2\/users\/325"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.uni.lu\/fstm-en\/wp-json\/wp\/v2\/media\/43595"}],"wp:attachment":[{"href":"https:\/\/www.uni.lu\/fstm-en\/wp-json\/wp\/v2\/media?parent=43594"}],"wp:term":[{"taxonomy":"research-project-status","embeddable":true,"href":"https:\/\/www.uni.lu\/fstm-en\/wp-json\/wp\/v2\/research-project-status?post=43594"},{"taxonomy":"research-project-type","embeddable":true,"href":"https:\/\/www.uni.lu\/fstm-en\/wp-json\/wp\/v2\/research-project-type?post=43594"},{"taxonomy":"field-of-interest","embeddable":true,"href":"https:\/\/www.uni.lu\/fstm-en\/wp-json\/wp\/v2\/field-of-interest?post=43594"},{"taxonomy":"organisation","embeddable":true,"href":"https:\/\/www.uni.lu\/fstm-en\/wp-json\/wp\/v2\/organisation?post=43594"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}