Interpretation of aggregate volume fraction effects on fracture behavior of concrete

Failure characteristics of self-compacting concretes made with recycled aggregates

“…All the beams were loaded at a constant rate of 0.02 mm/minute. In accordance with literature, the net flexural strength, f flex , was calculated by the following formula (P max is the ultimate load) assuming no notch sensitivity [37,38]:…”

Artificial neural network approach to predict the fracture parameters of the size effect model for concrete

“…Experimental studies 9,[18][19][20][21]30,22,[31][32][33]23 demonstrated that the fracture parameters of concrete were closely related to several material properties such as aggregate type, maximum aggregate size (d max ), 28 day cylindrical compressive strength (f ′ c ), test age (t) and water-cement ratio (w/c). Considering this knowledge, these five material properties could be selected to construct the input variables for ANN.…”

Experimental Research on Fracture Behavior of Concrete after High Temperature

“…n today's construction industry, concrete as the most important engineering material has been widely used; high-rise buildings, bridges, channels will use a lot of concrete materials and there will be some small cracks in the use process of concrete. These cracks may be formed in the process of concrete forming, or may be formed by the external environment (high temperature, man-made) [1][2][3]. Cracks will expand in a very strong pressure state, leading to gradual increase of crack width and length and decrease of bearing capacity, which will ultimately cause the breakage of structure, and crack is one of the main factors leading to the decrease of bearing capacity of concrete structures [4,5].…”