Abstract
This paper discusses the main non-destructive quality control methods that are used in the inspection of both under construction and already existing concrete structures. Purpose of the work: to conduct a comparative analysis of non-destructive testing methods, to consider a practical example of their application in the survey of a building being reconstructed, to identify the essential points of the organization of non-destructive quality control, which must be taken into account when developing a site work execution program. Materials and methods: the application of methods of non-destructive testing, separation with spalling and the ultrasonic method of surface sounding, is considered in detail. Results: the results of the inspection of structures by the methods separation with spalling and the ultrasonic method of surface sounding are presented, the test conditions, basic requirements for correct data interpretation, and the necessary calculations are given. Recommendations are given for planning the quality control of concrete structures at the stage of organizational and technological preparation of construction. Conclusions: non-destructive quality control finds its application both in the construction of new facilities and in the inspection of existing buildings. The choice of the survey method is made at the stage of development of a site work execution program, while it is necessary to take into account the features and scope of application of a particular method, probable measurement error, it is also possible to use several methods in combination.
Highlights
One of the main tasks in construction is to ensure the trouble-free operation of monolithic structures and buildings throughout the entire design period, which largely depends on the quality of concrete work [1, 2]
Their main task is to determine the strength characteristics of concrete. Such methods can be applied both in the early stages of concrete hardening when assessing stripping strength and during curing, and when monitoring the strength parameters of concrete of the most critical monolithic structures, until they reach the design values
Recommendations are given for planning quality control of concrete structures at the stage of organizational and technological preparation of construction
Summary
One of the main tasks in construction is to ensure the trouble-free operation of monolithic structures and buildings throughout the entire design period, which largely depends on the quality of concrete work [1, 2]. Non-destructive testing methods have a wide range of application They are used in the construction of monolithic. Their main task is to determine the strength characteristics of concrete. No less important is the role of non-destructive testing in the survey of buildings and structures in operation, especially those operated under dynamic loads, the impact of unfavorable factors, as well as when performing work related to the reconstruction of the object [6]
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