Concrete fracture analysis

Bažant (1983) proposed a crack band model for materials like concrete whose homogeneous nature changes randomly over a certain range.[1]

He also observed that in plain concrete, the size effect has a strong influence on the critical stress intensity factor,[3] and proposed the relation

${\displaystyle \sigma }$ = ${\displaystyle \tau }$ / √(1+{${\displaystyle d}$/${\displaystyle \lambda }$${\displaystyle \delta }$}),[3][4]

where ${\displaystyle \sigma }$ = stress intensity factor, ${\displaystyle \tau }$ = tensile strength, ${\displaystyle d}$ = size of specimen, ${\displaystyle \delta }$ = maximum aggregate size, and ${\displaystyle \lambda }$ = an empirical constant.

• Concrete cone failure – Failure mode of anchors in concrete submitted to tensile force
• Concrete degradation – Damage to concrete affecting its mechanical strength and its durability
• Material failure theory – Science of predicting if, when, and how a given material will fail under loading