Use of digital image correlation technique to the ultimate load test on modular textile reinforced concrete segments
摘要
In the context of modular construction practices evolving in various countries, a textile reinforced concrete (TRC) modular segment is developed in the present study for application as tanks. Unlike conventional behaviour, which TRC exhibits compared to conventional steel reinforced concrete, the instrumentation techniques used to arrive at TRC product qualification are very important. Given this, in the present work, investigations are carried out on the TRC modular segment till the ultimate load. Firstly, the binder and textile used in TRC are experimentally characterized. Rectangular TRC tanks are investigated to determine leakage, cracking, and ultimate behaviour. The strains are measured using the conventional way of capturing strain with the strain gauges and the Digital Image Correlation technique. While strain gauges recorded strain only up to the first crack, DIC recorded the maximum strain sustained by the TRC segment till the ultimate load. Due to the multiple cracking nature of TRC, studies clearly show that DIC provides an efficient way to monitor and assess stresses in TRC. Even for full-scale level testing, the DIC approach showed promise in capturing the overall response behavior up to the maximum load.