AASHTO T 334-08（2020）涵盖了约束混凝土试样开裂趋势的测定。该程序确定了与约束时混凝土开裂时间相关的混凝土性能变化的影响。该程序是比较性的，不用于确定特定类型结构中浇筑的混凝土的初始开裂时间。

AASHTO T 334-08 (2020) covers the determination of the cracking tendency of restrained concrete specimens. The procedure determines the effects of variations in the properties of concrete as related to the time-to-cracking of concrete when restrained. The procedure is comparative and not intended to determine the time of initial cracking of concrete cast in a specific type of structure.