Comparison of boundary and size effect models based on new developments

Hoover, Bazant and colleagues have published a number of papers in recent years (Bazant and Yu, 2009; Yu, 2010; Hoover and Bazant, 2013a, 2013b, 2014) on comparisons between Bazant size effect model (SEM) and Hu-Duan boundary effect model (BEM) for quasi-brittle fracture of concrete. With the recent developments of BEM (Wang et al., 2016; Guan et al., 2016; Wang and Hu, 2017) on irregular and discrete crack growth in concrete shaped by coarse...