Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evaluation of enhanced autogenous self-healing ability of UHPC mixtures
https://orcid.org/0000-0002-4842-4289
https://orcid.org/0000-0002-5528-1247
Highlights A correct point of view is a must to determine a realistic ratio of self-healing. Over-optimistic results may be obtained by ignoring undergoing pozzolanic reactions. SCMs can enhance the self-healing ability of UHPC even after 90 days water curing. Novel techniques were introduced for assessing the self-healing mechanisms of cracks.
Abstract Enhancing and characterization of self-healing ability of ultra high performance concrete (UHPC) is the main aim of this study. The self-healing mechanisms of macro/micro cracks were investigated through different techniques with some novel procedures. Two different mix designs have been considered to increase the amount of unreacted particles in the matrix. In spite of the positive effect of supplementary cementitious materials (SCM) on self-healing ability of UHPC, it was observed that the detected self-healing ratios depend on critical parameters such as damage type/level and the methods used to verify the phenomenon of self-healing. Depending on the composition of the UHPC mixtures, the age of specimens and the assessing method, up to 70–76% recoveries were obtained in the compressive strength and permeability of specimens pre-loaded up to ~100% of their corresponding compressive strength. In addition, up to 88–100% crack sealing was observed in the pre-cracked UHPC specimens assessed via various methods.
Evaluation of enhanced autogenous self-healing ability of UHPC mixtures
https://orcid.org/0000-0002-4842-4289
https://orcid.org/0000-0002-5528-1247
Highlights A correct point of view is a must to determine a realistic ratio of self-healing. Over-optimistic results may be obtained by ignoring undergoing pozzolanic reactions. SCMs can enhance the self-healing ability of UHPC even after 90 days water curing. Novel techniques were introduced for assessing the self-healing mechanisms of cracks.
Abstract Enhancing and characterization of self-healing ability of ultra high performance concrete (UHPC) is the main aim of this study. The self-healing mechanisms of macro/micro cracks were investigated through different techniques with some novel procedures. Two different mix designs have been considered to increase the amount of unreacted particles in the matrix. In spite of the positive effect of supplementary cementitious materials (SCM) on self-healing ability of UHPC, it was observed that the detected self-healing ratios depend on critical parameters such as damage type/level and the methods used to verify the phenomenon of self-healing. Depending on the composition of the UHPC mixtures, the age of specimens and the assessing method, up to 70–76% recoveries were obtained in the compressive strength and permeability of specimens pre-loaded up to ~100% of their corresponding compressive strength. In addition, up to 88–100% crack sealing was observed in the pre-cracked UHPC specimens assessed via various methods.
Evaluation of enhanced autogenous self-healing ability of UHPC mixtures
https://orcid.org/0000-0002-4842-4289
https://orcid.org/0000-0002-5528-1247
Highlights A correct point of view is a must to determine a realistic ratio of self-healing. Over-optimistic results may be obtained by ignoring undergoing pozzolanic reactions. SCMs can enhance the self-healing ability of UHPC even after 90 days water curing. Novel techniques were introduced for assessing the self-healing mechanisms of cracks.
Abstract Enhancing and characterization of self-healing ability of ultra high performance concrete (UHPC) is the main aim of this study. The self-healing mechanisms of macro/micro cracks were investigated through different techniques with some novel procedures. Two different mix designs have been considered to increase the amount of unreacted particles in the matrix. In spite of the positive effect of supplementary cementitious materials (SCM) on self-healing ability of UHPC, it was observed that the detected self-healing ratios depend on critical parameters such as damage type/level and the methods used to verify the phenomenon of self-healing. Depending on the composition of the UHPC mixtures, the age of specimens and the assessing method, up to 70–76% recoveries were obtained in the compressive strength and permeability of specimens pre-loaded up to ~100% of their corresponding compressive strength. In addition, up to 88–100% crack sealing was observed in the pre-cracked UHPC specimens assessed via various methods.
Evaluation of enhanced autogenous self-healing ability of UHPC mixtures
Beglarigale, Ahsanollah (Autor:in) / Eyice, Doğa (Autor:in) / Tutkun, Bayram (Autor:in) / Yazıcı, Halit (Autor:in)
23.01.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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