Benchmark solution
=====================

The reference solution comes from the experimental results of Slowik and Saouma [:ref:`2 <2>`]


Bibliography
-------------


1. Brühwiler, E., Witmann, F.H., The wedge splitting test, a new method of performing stable fracture mechanics tests, *Engineering Fracture Mechanics* ,1990,35,1/,1/1/2/3,117-125


2. Slowik, V., Saouma, V.E., Water Pressure in Propagating Concrete Cracks, *Journal of Structural Engineering* ,2000,126,2,2,235-242


3. Segura, J.M., Carol, I., Numerical Modelling of pressurized fracture evolution in concrete using zero-thickness interface elements, *Engineering Fracture Mechanics* ,2010,77,9,1386-1399