Temperature and chemical resistance of repair composite and microstructure monitoring depending on different type of binder and filler

25th International Conference and Meeting of Departments, CONSTRUMAT 2019

Hodul, J.^1 ; Mészárosová, L.^1 ; lebek, T.^1 ; Drochytka, R.^1

Brno University of Technology, Faculty of Civil Engineering, Veveí 331/95, Brno

602 00, Czech Republic^1

关键词: Aggressive environment;    Chemical stress;    Effects of temperature;    Industrial production;    Mechanical stress;    Polymer composite;    Secondary Raw Materials;    Temperature resistances;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/549/1/012029/pdf
DOI  :  10.1088/1757-899X/549/1/012029

来源: IOP

【 摘 要 】

Currently, we are carrying out several repairs to concrete structures that are permanently exposed to chemically aggressive environments and the effects of temperature and cyclic mechanical stress. It is therefore necessary to develop a highly resistant patching composite that would return the damaged objects to their original state or improve resistance to external attack. In this paper, results of the research, in which monitoring of the temperature was performed and chemical resistance of the polymer composites of repair, specifically with the epoxy matrix and a different type of filler, is presented. As a filler, we use secondary raw materials that are currently produced largely as a by-product of industrial production in the Czech Republic and abroad. It has been found that the type of filler used has not an impact on temperature resistance. but in chemical resistance plays a considerable role also used filler. The microstructure was also monitored before and after chemical stress.