Complex studies of concrete by non-destructive methods.

One of the ways to save raw materials and energy resources is the introduction of non-destructive testing at precast concrete factories as an integral part of comprehensive quality control. This article discusses non-destructive methods for determining the strength of concrete, describes and presents the results and analysis of studies. Two main test methods were identified and compared - drilling and ultrasonic methods. Including used a comprehensive test method. The procedure involved a random selection of cubes for each test series. Each type of test was subjected to 10 cubes. Impact, indentation and ultrasonic tests were carried out in accordance with the existing Code. The drilling method was defined as new. According to the test results, graphs are built. Analysis of the graphs obtained gives a more complete picture of the strength properties of materials and structures. Complex tests allow us to assume the further nature of the behavior of materials and structures under the influence of loads in comparison with the case when only one test method is used. One of the ways to save raw materials and energy resources is the introduction of non-destructive testing at precast concrete factories as an integral part of comprehensive quality control. [ABSTRACT FROM AUTHOR]