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Published on: June 27, 2018
Long-Term Bonding and Tensile Strengths of Carbon Textile Reinforced Mortar
Kira Heins1, Magdalena Kimm1, Lea Olbrueck1
1Institut für Textiltechnik of RWTH Aachen University (ITA), 52074 Aachen, Germany.
Abstract:
This paper deals with the long-term bonding and tensile strengths of textile reinforced mortar (TRM) exposed to harsh environments. The objective of this study was to investigate the long-term bonding and tensile strengths of carbon TRM by an accelerated aging method. Moisture, high temperature, and freezing-thaw cycles were considered to simulate harsh environmental conditions. Grid-type textiles were surface coated to improve the bond strength with the mortar matrix. A total of 130 TRM specimens for the bonding test were fabricated and conditioned for a prolonged time up to 180 days at varying moisture conditions and temperatures. The long-term bonding strength of TRM was evaluated by a series of bonding tests. On the other hand, a total of 96 TRM specimens were fabricated and conditioned at freezing-thaw conditions and elevated temperature. The long-term tensile strength of TRM was evaluated by a series of direct tensile tests. The results of the bonding test indicated that TRM was significantly degraded by moisture. On the other hand, the influence of the freezing-thaw conditions and high temperature on the tensile strength of the TRM was insignificant.
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