Dynamic Behavior of Textile Reinforced Polymer Concrete Using Split Hopkinson Pressure Bar
Textile reinforced concrete (TRC) and textile reinforced mortar (TRM) have been introduced to the construction industry due to their relatively high tensile strength, high ductility, and ease of installation compared to other types of ordinary cementitious materials. A typical thin TRC plate consists of multidirectional fiber fabric reinforcement embedded in fine-grained cementitious concrete or mortar. One of the disadvantages of the TRC system is the potential early debonding that could occur between the fibers and the cementitious matrix. This paper discusses the possible use of textile fabric embedded in polymer matrix to form textile reinforced polymer concrete (TRPC) as an alternative material system to the conventional polymer concrete (PC) and TRC materials. The dynamic behavior of the new textile reinforced polymer concrete (TRPC) is quantified using modified split Hopkinson pressure bar (SHPB) system. Circular plates were prepared from TRPC with different number of fabric layers and centrally loaded using SHPB. In addition, the performance of TRPC specimens was compared to PC control specimen with no fiber fabric. The results show the ability of TRPC to withstand higher dynamic loads than the traditional PC. Such improvements in the dynamic behavior of the TRPC can benefit the design and construction of concrete panels against extreme loading scenarios.
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