Assessing the status of existing reinforced concrete structures is generally done when there is integrity of a structure or if there are concerns that meet the safety requirements of the structure. For example, strength assessment studies (load tests) are carried out in order to determine whether the structure is damaged after an earthquake or to determine whether the structure will be used for a different purpose.
Two separate standards have been developed by the American Concrete Institute (ACI): ACI 318 Building code requirements standard for structural concrete and ACI 437 Code requirements standard for load testing of existing concrete structures.
Load strength tests include the application of a predetermined load along with the response measurements of the structure. In these tests, deviation measurements are mainly performed. However, rotation, stress, crack width, acoustic emission and other measurements can also be made.
Load strength tests commonly used in the assessment of the strength of structures are carried out mainly for the following purposes: if a structure is integrity, after overloads applied to the structure, if the structure is to be used for a different purpose and a structure needs to be strengthened.
During load tests, the behavior and strength of the structure are evaluated in different ways. Therefore, it is very important to standardize the load test protocols and to set certain acceptance limits. This is the only way to ensure that the structure is safe for the intended use. In this respect, the ACI standards mentioned above are important and have been used extensively for many years. This method is simple and easy to implement.
Strength evaluation of concrete structures is made using physical load test method. The physical load test is more suitable to ensure shear or bond strength, but is also used to check for problems with flexibility or axial capability of the structure.
Static and dynamic loads on structures can cause stresses, deformations and displacements that may cause structural problems. For this reason, load resistance tests are an important part of building designs and structures such as bridges and tunnels.
The application is received, the contract and then the product, vehicle and vehicles for which, what kind of service is determined exactly.
The necessary laboratory environment is prepared and the products, tools and instruments requested by the organization are tested by experts with the reference of the existing standards and measurements are made.
The data obtained as a result of meticulously completed tests, measurements and analyzes are evaluated and accredited approved reports are submitted by expert engineers.
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