TY - GEN
T1 - STRAIN MEASUREMENT AND ADHESIVE SELECTION FOR STRAIN GAUGES ON CARBON ROVING IN TEXTILE-REINFORCED CONCRETE STRUCTURES
AU - Polienko, Wladislaw
AU - Tekle, Biruk Hailu
AU - Holschemacher, Klaus
N1 - Funding Information:
This research is financed by the Saxon State government out of the State budget approved by the Saxon State Parliament. The authors would like to express their sincere gratitude to the University of Applied Sciences Leipzig (HTWK Leipzig) for the support of this research.
Publisher Copyright:
© 2024 ISEC Press.
PY - 2024/3
Y1 - 2024/3
N2 - Textile-reinforced concrete (TRC) is a promising building material that meets modern environmental protection and sustainability requirements. For the widespread use of this innovative building material, empirical models based on material properties determined by laboratory tests are needed. This study investigated the ability to measure the strain of carbon rovings with small strain gauges during standard tensile tests. The measured values were compared and validated using the digital image correlation (DIC) method. Another component of this study is the investigation of a suitable adhesive for the application of the sensors to SBR-coated (styrene-butadiene rubber) carbon roving. Three test series with three different adhesives, cyanoacrylate adhesive, epoxy resin, and polychloroprene, were produced and tested for tensile strength. The validation tests showed that a strain loss occurs in the adhesive joint of the strain gauges. It was found that cyanoacrylate adhesives, such as M-Bond 200, suffered the lowest losses and are recommended for further investigations. The epoxy resin influences the stiffness of the carbon fibers at the contact surface too strongly, while the polychloroprene adhesive could not transfer the actual roving strain due to insufficient stiffness of the bond line.
AB - Textile-reinforced concrete (TRC) is a promising building material that meets modern environmental protection and sustainability requirements. For the widespread use of this innovative building material, empirical models based on material properties determined by laboratory tests are needed. This study investigated the ability to measure the strain of carbon rovings with small strain gauges during standard tensile tests. The measured values were compared and validated using the digital image correlation (DIC) method. Another component of this study is the investigation of a suitable adhesive for the application of the sensors to SBR-coated (styrene-butadiene rubber) carbon roving. Three test series with three different adhesives, cyanoacrylate adhesive, epoxy resin, and polychloroprene, were produced and tested for tensile strength. The validation tests showed that a strain loss occurs in the adhesive joint of the strain gauges. It was found that cyanoacrylate adhesives, such as M-Bond 200, suffered the lowest losses and are recommended for further investigations. The epoxy resin influences the stiffness of the carbon fibers at the contact surface too strongly, while the polychloroprene adhesive could not transfer the actual roving strain due to insufficient stiffness of the bond line.
KW - Carbon fiber
KW - Digital image correlation
KW - Strain sensors
KW - TRC
UR - http://www.scopus.com/inward/record.url?scp=85209947512&partnerID=8YFLogxK
UR - https://www.isec-society.org/EURO_MED_SEC_05/
UR - https://www.isec-society.org/ISEC_PRESS/EURO_MED_SEC_05/html/toc.php
U2 - 10.14455/ISEC.2024.11(2).CAC-02
DO - 10.14455/ISEC.2024.11(2).CAC-02
M3 - Conference contribution
AN - SCOPUS:85209947512
VL - 11
T3 - Proceedings of International Structural Engineering and Construction
SP - 1
EP - 6
BT - Proceedings of International Structural Engineering and Construction
A2 - Gribniak, Viktor
A2 - Rimkus, Arvydas
A2 - Holschemacher, Klaus
A2 - Quapp, Ulrike
A2 - Yazdani, Siamak
A2 - Singh, Amarjit
PB - ISEC Press
T2 - 5th European and Mediterranean Structural Engineering and Construction Conference, EURO MED SEC 2024
Y2 - 13 May 2024 through 18 May 2024
ER -