A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Improved Reuse of Concrete Components
The construction industry’s demand for resources and significant contribution to global greenhouse gas emissions, particularly with the cement sector responsible for 8% of CO2 emissions, underscores the urgency for sustainable practices. In Germany, where 411 million tons of waste were produced in 2021, 222 million tons resulted from construction and demolition activities, with an impressive 89% being recycled. This study addresses the prevalent practice of demolishing and replacing buildings, which exacerbates resource consumption and emissions.
Concrete, a dominant building material, faces downcycling challenges due to specific geometries and reinforcement layouts. The focus on prefabricated elements has limitations, leading to an innovative approach involving cut concrete elements for direct reuse. This concept, demonstrated among others by C. Fivet and M. Bastien Masse (EPFL), aims to become a viable business model.
The study delves into the re-use of cut concrete elements, exploring applications such as noise barrier walls and traditional walls with steel columns. However, challenges arise, particularly in anchoring minimum reinforcement for slab elements. The proposed solution involves Ultra-High-Performance Fiber-Reinforced Concrete (UHPFRC) for post-reinforcement anchoring, exhibiting promise in initial tests.
Anchoring tests with UHPFRC were conducted, revealing promising results in developing a technical solution for reinforcement anchoring challenges in cut concrete elements. Ongoing research explores optimization of anchoring methods, shear force transfer, and reinforcement connections. Comprehensive environmental impact assessments are pending, considering emissions associated with cutting, transportation, jetting, and UHPFRC application. The study aims to contribute to sustainable construction practices and minimize resource consumption.
Improved Reuse of Concrete Components
The construction industry’s demand for resources and significant contribution to global greenhouse gas emissions, particularly with the cement sector responsible for 8% of CO2 emissions, underscores the urgency for sustainable practices. In Germany, where 411 million tons of waste were produced in 2021, 222 million tons resulted from construction and demolition activities, with an impressive 89% being recycled. This study addresses the prevalent practice of demolishing and replacing buildings, which exacerbates resource consumption and emissions.
Concrete, a dominant building material, faces downcycling challenges due to specific geometries and reinforcement layouts. The focus on prefabricated elements has limitations, leading to an innovative approach involving cut concrete elements for direct reuse. This concept, demonstrated among others by C. Fivet and M. Bastien Masse (EPFL), aims to become a viable business model.
The study delves into the re-use of cut concrete elements, exploring applications such as noise barrier walls and traditional walls with steel columns. However, challenges arise, particularly in anchoring minimum reinforcement for slab elements. The proposed solution involves Ultra-High-Performance Fiber-Reinforced Concrete (UHPFRC) for post-reinforcement anchoring, exhibiting promise in initial tests.
Anchoring tests with UHPFRC were conducted, revealing promising results in developing a technical solution for reinforcement anchoring challenges in cut concrete elements. Ongoing research explores optimization of anchoring methods, shear force transfer, and reinforcement connections. Comprehensive environmental impact assessments are pending, considering emissions associated with cutting, transportation, jetting, and UHPFRC application. The study aims to contribute to sustainable construction practices and minimize resource consumption.
Improved Reuse of Concrete Components
Lecture Notes in Civil Engineering
Barros, Joaquim A. O. (editor) / Cunha, Vítor M. C. F. (editor) / Sousa, Hélder S. (editor) / Matos, José C. (editor) / Sena-Cruz, José M. (editor) / Stürwald, Simone (author)
FIB International Conference on Concrete Sustainability ; 2024 ; Guimarães, Portugal
4th fib International Conference on Concrete Sustainability (ICCS2024) ; Chapter: 45 ; 366-370
2025-01-09
5 pages
Article/Chapter (Book)
Electronic Resource
English
UB Braunschweig | 1989
Sustainable Concrete Through Reuse of Crushed Returned Concrete
| British Library Online Contents | 2009