A Concrete Creep, Shrinkage, and Cracking Law for Frame Structures.

A mathematical model is developed to emulate the strain-stress and fracture behavior of concrete in a planar structural frame. The strain-stress and fracture law is formulated to account for creep, shrinkage, and cracking in the concrete. A linear relation in integral equation form is used to relate stress to creep strain. A step-forward integration technique is devised to evaluate the integral equa-tion. Three examples are studied to demonstrate the accuracy of the integration method. An additional example is presented to show the need for a law which accounts for creep, shrinkage, and cracking in the concrete. [ABSTRACT FROM AUTHOR]