Gypcrete Testing Gypcrete Testing taiman (Materials) (OP) 13 May 16 16:33 How would Gypcrete be tested after placement? It is believed that this product is failing in an application. RE: Gypcrete Testing Ron (Structural) 13 May 16 23:43 You can core the material and do compressive strength and petrographic examination. What is the failure mode? Is is dusting at the surface? Is it cracking more than anticipated? Is it crumbly or friable? All of these will help determine the probably cause of the failure. RE: Gypcrete Testing taiman (Materials) (OP) 16 May 16 15:35 The hallways are crumbly and friable. Classrooms are cracking more than anticipated.