The development of concrete creep during and after stressing was investigated, based on the monitored data of Xiao Langdi prestressed sediment tunnel liner. It demonstrates that the concrete creep developed during stressing is linearly related to the existing stress σ and the loading time t. The percentage of concrete creep in the total strain is relatively large and can't be ignorable. For the engineering structures that several days will be needed to complete the stressing. According to the stressing prog...