Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Exploring Bacteria-Based Self-healing Potential in Cement-Lime Mortar Masonry
https://orcid.org/http://orcid.org/0000-0003-0420-2817
https://orcid.org/http://orcid.org/0000-0002-2587-7808
https://orcid.org/http://orcid.org/0000-0002-8519-5999
The integration of bacteria-based self-healing mortars has emerged as a promising solution to address repair due to recurring cracks and preserving masonry durability. Building upon a recent pilot study demonstrating the efficacy of a self-healing agent in the repair of masonry made with cement-based mortar, this follow-up study explores the potential of integrating the added-in healing agent in a pre-bagged cement-lime mortar - more commonly used in masonry applications. Through bond wrench tests and a 30-day healing period involving wet-dry cycles, the study evaluates aesthetic and flexural bond strength recovery of couplets built with solid clay bricks. Results showed that the addition of the agent altered the initial flexural bond strength, with bacteria-based masonry couplets four times stronger than the plain reference ones - without containing the agent. The mortar’s color was also affected. Additionally, bacteria-based specimens demonstrated automatic repair, restoring up to 33% of the original flexural bond strength, while reference masonry couplets showed no evidence of autonomous healing. However, instances of leaching, possibly attributed to the agent's substrate, prompted a revision of the strategy employed for the healing environment. Further research will specifically target the observed leaching issue by exploring the effects of multiple healing environments.
Exploring Bacteria-Based Self-healing Potential in Cement-Lime Mortar Masonry
https://orcid.org/http://orcid.org/0000-0003-0420-2817
https://orcid.org/http://orcid.org/0000-0002-2587-7808
https://orcid.org/http://orcid.org/0000-0002-8519-5999
The integration of bacteria-based self-healing mortars has emerged as a promising solution to address repair due to recurring cracks and preserving masonry durability. Building upon a recent pilot study demonstrating the efficacy of a self-healing agent in the repair of masonry made with cement-based mortar, this follow-up study explores the potential of integrating the added-in healing agent in a pre-bagged cement-lime mortar - more commonly used in masonry applications. Through bond wrench tests and a 30-day healing period involving wet-dry cycles, the study evaluates aesthetic and flexural bond strength recovery of couplets built with solid clay bricks. Results showed that the addition of the agent altered the initial flexural bond strength, with bacteria-based masonry couplets four times stronger than the plain reference ones - without containing the agent. The mortar’s color was also affected. Additionally, bacteria-based specimens demonstrated automatic repair, restoring up to 33% of the original flexural bond strength, while reference masonry couplets showed no evidence of autonomous healing. However, instances of leaching, possibly attributed to the agent's substrate, prompted a revision of the strategy employed for the healing environment. Further research will specifically target the observed leaching issue by exploring the effects of multiple healing environments.
Exploring Bacteria-Based Self-healing Potential in Cement-Lime Mortar Masonry
https://orcid.org/http://orcid.org/0000-0003-0420-2817
https://orcid.org/http://orcid.org/0000-0002-2587-7808
https://orcid.org/http://orcid.org/0000-0002-8519-5999
The integration of bacteria-based self-healing mortars has emerged as a promising solution to address repair due to recurring cracks and preserving masonry durability. Building upon a recent pilot study demonstrating the efficacy of a self-healing agent in the repair of masonry made with cement-based mortar, this follow-up study explores the potential of integrating the added-in healing agent in a pre-bagged cement-lime mortar - more commonly used in masonry applications. Through bond wrench tests and a 30-day healing period involving wet-dry cycles, the study evaluates aesthetic and flexural bond strength recovery of couplets built with solid clay bricks. Results showed that the addition of the agent altered the initial flexural bond strength, with bacteria-based masonry couplets four times stronger than the plain reference ones - without containing the agent. The mortar’s color was also affected. Additionally, bacteria-based specimens demonstrated automatic repair, restoring up to 33% of the original flexural bond strength, while reference masonry couplets showed no evidence of autonomous healing. However, instances of leaching, possibly attributed to the agent's substrate, prompted a revision of the strategy employed for the healing environment. Further research will specifically target the observed leaching issue by exploring the effects of multiple healing environments.
Exploring Bacteria-Based Self-healing Potential in Cement-Lime Mortar Masonry
Lecture Notes in Civil Engineering
Milani, Gabriele (Herausgeber:in) / Ghiassi, Bahman (Herausgeber:in) / Gaggero, Maria B. (Autor:in) / Korswagen, Paul A. (Autor:in) / Esposito, Rita (Autor:in) / Rots, Jan G. (Autor:in)
International Brick and Block Masonry Conference ; 2024 ; Birmingham, United Kingdom
21.01.2025
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Engineering Index Backfile | 1891
Development of masonry mortar using lime stone polished slurry and cement
| British Library Conference Proceedings | 2000
Effect of Adding Hydrated Lime to Masonry Cement Mortar on Physical Properties
| British Library Conference Proceedings | 2003
| Trans Tech Publications | 2017