@article { author = {Choi, Heesup and Inoue, Masumi and Sengoku, Risa and Choi, Hyeonggil}, title = {Strength recovery of concrete exposed to freezing-thawing by self-healing of cementitious materials using synthetic fiber }, journal = {Advanced Materials Letters}, volume = {8}, number = {10}, pages = {993-998}, year = {2017}, publisher = {International Association of Advanced Materials}, issn = {0976-3961}, eissn = {0976-397X}, doi = {10.5185/amlett.2017.1635}, abstract = {In this study, it is possible to disperse effectively cracked using synthetic fiber, an examination of the most suitable self-healing conditions was performed on the above crack width 0.1mm. As a result, effective crack dispersion using polyvinyl alcohol (PVA) fibers with polar OH - groups, as well as improved self-healing for cracks that are larger than 0.1 mm in width, posing concerns of CO2 gas and Cl - penetration, were observed. Also, CO3 2- reacts with Ca 2+ in the concrete crack, resulting in the precipitation of a carbonate compound, CaCO3. Based on this, it is deemed possible for the recovery of effective water tightness and strength recovery through effective freezing-thawing resistance to be made from cracks that are larger than 0.1 mm in width. In addition, it was determined that, as for the most suitable self-healing conditions in the inside and surface of the cracks, calcium hydroxide (Ca(OH)2) solution with CO2 micro-bubble was more effective in promoting the self-healing capability than water with CO2 micro-bubble. }, keywords = {freeze,thaw,Micro,crack,PVA fiber,CO2 micro,bubble,self,Healing,water tightness,strength recovery}, url = {https://aml.iaamonline.org/article_14943.html}, eprint = {https://aml.iaamonline.org/article_14943_6da7fa3abd27822f2e8388b13cf75e91.pdf} }