Evaluation of enhanced autogenous self-healing ability of UHPC mixtures
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Date
2021
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Sci Ltd
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 -400% 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. (C) 2021 Elsevier Ltd. All rights reserved.
Description
YAZICI, HALİT/0000-0002-0921-9709; Tutkun, Bayram/0000-0002-5528-1247; Beglarigale, Ahsanollah/0000-0002-4842-4289
Keywords
Self-healing, UHPC, Cementitious materials, Concrete
Turkish CoHE Thesis Center URL
Citation
30
WoS Q
Q1
Scopus Q
Q1
Source
Volume
280