| Title |
Strength Properties and Self-Rehabilitation Function Examination of Polymer-Modified Mortars Using Bisphenol A-Type Epoxy Resin |
| Keywords |
Epoxy Resin ; Strengths ; Water Absorption ; Intelligent Material ; Self-Rehabilitation Function |
| Abstract |
Concrete materials present unresolved durability issues. Life cycle costs are high and damage can be unsightly and unpredictable. If it is developed any smart cement composites which can self-repair internal cracks due to mechanical loading, the durability of concrete materials are remarkably improved. The purpose of this study is to ascertain self-rehabilitation function of epoxy-modified mortars without hardener. The epoxy-modified mortars without hardener are prepared with various polymer-cement ratios, subjected to different curing conditions, and tested for flexural and compressive strengths. And then, the epoxy-modified mortars without hardener in standard cure condition are evaluated the self-rehabilitation function through strength test after preloading at a 90 percentage of maximum compressive load. As a result, the strengths of epoxy-modified mortars without hardener are remarkably improved at the range of 5 to 15% of polymer-cement ratios in comparison with unmodified mortar. Among 3types of the curing conditions, the standard cure are recommended as a optimal curing condition of the epoxy-modified mortars. The strengths and water absorption of epoxy-modified mortars without hardener are improved because of the self-rehabilitation function of cracks during curing after preloading. Accordingly, it is considered that the epoxy-modified mortars without hardener may be used as intelligent materials in repair work for deteriorated reinforced concrete structures. |