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http://dx.doi.org/10.14190/JRCR.2022.10.1.92

An Experimental Study on Crack Self-Healing and Mechanical Recovery Performance of Cement Composites Materials Using Encapsulated Expandable Inorganic Materials based Solid Healing Materials  

Choi, Yun-Wang (Department of Civil Engineering, Semyung University)
Nam, Eun-Joon (Department of Civil Engineering, Semyung University)
Kim, Cheol-Gyu (Department of Civil Engineering, Semyung University)
Oh, Sung-Rok (Department of Civil Engineering, Semyung University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.10, no.1, 2022 , pp. 92-100 More about this Journal
Abstract
In this paper, to evaluate the effect of SC on the crack self-healing performance and mechanical recovery performance of cement composites, encapsulated intumescent inorganic material-based solid healing materials were prepared. SC was mixed with cement composite materials to evaluate the basic properties, permeability test, and load reload test. SC slightly improved the flow of cement composites, and the compressive strength decreased by about 10 %. Also, the flexural strength decreased by about 30 %. It was found that when SC was mixed with the cement composite material by 5 %, the crack self-healing rate of Plain was improved by about 𝜟10 %. As a result of the load reload test, it was found that the mechanical recovery rate of Plain was improved by about 𝜟20 %. In addition, as a result of analyzing the correlation between the crack self-healing rate and the mechanical recovery rate by the load reload test, it is judged that the healing area of the Plain can be increased due to SC.
Keywords
Encapsulation; Expandable inorganic materials; Solid healing materials; Crack self-healing; Mechanical recovery performance;
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