Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Repeatability and Pervasiveness of Self-Healing in Engineered Cementitious Composites
This paper investigates the intrinsic self-healing ability of engineered cementitious composites (ECC) coupled with multiple microcrack formation under mechanical loading based on two robustness criteria: repeatability and pervasiveness. To this end, two different composites containing Class F fly ash and slag were investigated. To generate microcracks, specimens were repeatedly preloaded up to 70% of their deformation capacities under mechanical loading at the end of each specified cyclic wet/dry conditioning period. Resonant frequency (RF) and rapid chloride permeability tests were used to assess the extent of damage and self-healing, and final results were supported by microscope observations. Results of the experimental study show that depending on the type of mineral admixture used and the duration of initial curing before deterioration, ECC specimens can recover up to 85% of their initial RF measurements, even after six repetitive preloading applications. The recovery rates observed in the middle portion are similar to those in the top portion for both ECC mixtures, which implies that self-healing is quite pervasive.
Repeatability and Pervasiveness of Self-Healing in Engineered Cementitious Composites
This paper investigates the intrinsic self-healing ability of engineered cementitious composites (ECC) coupled with multiple microcrack formation under mechanical loading based on two robustness criteria: repeatability and pervasiveness. To this end, two different composites containing Class F fly ash and slag were investigated. To generate microcracks, specimens were repeatedly preloaded up to 70% of their deformation capacities under mechanical loading at the end of each specified cyclic wet/dry conditioning period. Resonant frequency (RF) and rapid chloride permeability tests were used to assess the extent of damage and self-healing, and final results were supported by microscope observations. Results of the experimental study show that depending on the type of mineral admixture used and the duration of initial curing before deterioration, ECC specimens can recover up to 85% of their initial RF measurements, even after six repetitive preloading applications. The recovery rates observed in the middle portion are similar to those in the top portion for both ECC mixtures, which implies that self-healing is quite pervasive.
Repeatability and Pervasiveness of Self-Healing in Engineered Cementitious Composites
Mustafa Sahmaran (Autor:in) / Gürkan Yildirim / Rezhin Noori / Erdogan Ozbay / Mohamed Lachemi
ACI materials journal ; 112
2014
Aufsatz (Zeitschrift)
Englisch
Repeatability and Pervasiveness of Self-Healing in Engineered Cementitious Composites
| British Library Online Contents | 2015
Self-healing capability of large-scale engineered cementitious composites beams
| BASE | 2016
Self-healing capability of large-scale engineered cementitious composites beams
| BASE | 2016
Self-healing capability of large-scale engineered cementitious composites beams
| British Library Online Contents | 2016