Automated Testing of Concrete Compressive Properties

Abstract

Material properties of concrete are normally determined by standard testing methods according to the code procedures. These testing methods were developed namely for the requirements of quality control. The test for each material parameter is typically performed on a special test specimen. For example, the concrete strength is tested on cubes or cylinders, the modulus of elasticity on prismatic specimens, etc. The measuring devices are often not quite efficient and do not allow automation of the testing process. The use of resistance wire strain gagues glued on the specimen surface has also many disadvantages, such as short measuring base, limited range, etc. Therefore a question is often raised about the reproducibility of such tests.