The evaluation and diagnosis of the structures and materials that compose them is perhaps the most important step, since with its definition will come the decision about the rehabilitation procedure and / or structural reinforcement. Succeeding in the diagnosis represents the success of the investment, and of course, in the solution of the pathologies that cause the structural problems.
- Rebound hammer test ASTM C-805
- Pulse velocity test ASTM C-597
- Crack depth determination
- Reinforcement detection BS 1881, Part 204
- Half-Cell electrical potential method ASTM C 876-09
- Measurement of surface moisture
- Strength of Concrete Surfaces (Pull – off method) ASTM C-1583
- Carbonation depth measurement test UNE 112-011-94
- Chloride content in concrete ASTM C-114
- Concrete cores ASTM C-42
- Pulse velocity test in concrete cores ASTM C-597
- Resistivity in concrete cores UNE 83899-2
- Measurement of rate of absorption of water by hydraulic-cement concretes ASTM C-1585
- Voids in hardened concrete ASTM C-642
- Compressive strength of concrete cores ASTM C-42
- Tensile strength of concrete cores ASTM C-496
- Like the medical diagnoses on the human body, the non-destructive tests in civil structures aim to know the "health" of them, thus emerging a new field within the engineering known as "Structural Health Monitoring". The measurement of vibrations has been a great tool for the knowledge of structural health in the aeronautical field and recently adequate methods have been developed for civil structures, which consist of measuring vibrations by means of accelerometers. Through these methods you can know:
- The state of conservation of a structure
- The advance of the deterioration of a structure over time
- Natural frequencies and mode shapes of structures (calibration of computational models)
- Soil period and Vs30
