TY - CONF A1 - Paul, S. C. A1 - Ebell, Gino A1 - Van Zijl, G. P. A. G. A1 - Schmidt, Wolfram ED - Schlangen, E. ED - Sierra Beltran, M.G. ED - Lukovic, M. ED - Ye, G. T1 - Cracked and uncracked SHCC specimens under different exposure conditions N2 - This paper describes the fibre-reinforced strain hardening cement-based composite (SHCC) performance under various exposure conditions. Cracked and uncracked SHCC beam specimens were subjected to cyclic wetting and drying under chloride exposure to observe the time of depassivation and corrosion potential of the imbedded reinforcement. Two reference mortars, one of the same strength class as the SHCC (Mortar 1) and the other of high strength class (Mortar 2) were used under the same conditions. Finally, tests for determining the rapid chloride migration coefficient, electrical resistivity, capillary water absorption and freezethaw were also performed to observe the corrosion probability and diffusion rate in uncracked SHCC and mortars. T2 - SHCC3 - 3rd International RILEM conference on strain hardening cementitious composites CY - Dordrecht, The Netherlands DA - 03.11.2014 KW - Depassivation KW - SHCC corrosion crack KW - Lochkorrosion KW - Betonstahl PY - 2014 SN - 978-2-35158-150-6 SN - 978-2-35158-151-3 SP - 25 EP - 32 AN - OPUS4-32462 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Paul, S.C. A1 - Pirskawetz, Stephan A1 - Van Zijl, G.P.A.G. A1 - Schmidt, Wolfram T1 - Acoustic emission for characterising the crack propagation in strain-hardening cement-based composites (SHCC) N2 - This paper presents the analysis of crack propagation in strain-hardening cement-based composite (SHCC) under tensile and flexural load by using acoustic emission (AE). AE is a non-destructive technique to monitor the development of structural damage due to external forces. The main objective of this research was to characterise the cracking behaviour in SHCC in direct tensile and flexural tests by using AE. A better understanding of the development of microcracks in SHCC will lead to a better understanding of pseudo strain-hardening behaviour of SHCC and its general performance. ARAMIS optical deformation analysis was also used in direct tensile tests to observe crack propagation in SHCC materials. For the direct tensile tests, SHCC specimens were prepared with polyvinyl alcohol (PVA) fibre with three different volume percentages (1%, 1.85% and 2.5%). For the flexural test beam specimens, only a fibre dosage of 1.85% was applied. It was found that the application of AE in SHCC can be a good option to analyse the crack growth in the specimens under increasing load, the location of the cracks and most importantly the identification of matrix cracking and fibre rupture or slippage. KW - Acoustic emission KW - Crack Detection (B) KW - Microcracking (B) KW - Fibre Reinforcement (E) KW - Tensile Properties (C) PY - 2015 DO - https://doi.org/10.1016/j.cemconres.2014.12.003 SN - 0008-8846 SN - 1873-3948 VL - 69 SP - 19 EP - 24 PB - Pergamon Press CY - New York, NY AN - OPUS4-33579 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -