Tests on concrete are performed as a part of the quality control of concrete structures. Different quality tests are used to assure the quality of the concrete that is supplied for a given specification. These tests give an idea about the properties of concrete. Each test conducted on concrete determines their respective quality result of concrete. Hence, it is not possible to conduct all the test to determine the quality of concrete; choosing the best tests that can give good judgment of the concrete quality. MEA Ltd have the knowledge and expertise to be able to advise on the correct method and conduct the tests required.
Carbonation
Carbonation of the concrete, caused by carbon dioxide in the atmosphere, which can reduce the pH of concrete which will weaken not only the concrete but any steel reinforcing within.
Carbonation testing is carried out by applying a solution to the surface and checking the pH of the concrete therefore determining the level of carbonation that as occurred.
Pull Off Testing
Pull Off testing is a strength test which measures the tensile force required to ‘pull off’ a bonded disc from the surface of the concrete. This test gives the tensile and compressive strength of the concrete.
FE Modelling of Insitu Concrete
FE (Finite Element) Modelling is used to simulate the behaviour of a structure under given conditions. This can give the client insight into how the structure will endure under changing usage or environmental conditions.
Strength Testing (Coring)
Strength testing is used to test the compressive strength of the concrete and is a process of removing a core sample of the structure – ideally twice the length of the diameter of the removed core – and compressing to a point of cracking/breaking.
Half cell testing
Half Cell Testing is used to check corrosion in the steel reinforcement in concrete structures. Steel in good quality concrete is protected by high alkaline pore water which passivates the steel and keeping it in optimal condition. However, loss in alkalinity can cause the degenerating properties and weaken the steel.
Rebar
Rebar Testing is used to examine the tensile strength of the rebar used in concrete structures. Rebar (Steel Reinforcing Bars) enhances the tensile strength concrete structures therefore complimenting the basic strength of the concrete.
Strength
Strength testing is considered as the most popular test performed on concrete during the construction process as it gives a general idea on the all the characteristics of concrete. Based on this test, one can either accept or reject a concrete work. Compressive strength as a concrete property depends on several factors related to quality of used materials, mix design and quality control during concrete production. This test uses a cube from the mix of concrete and compressed to test its strength.
For more information on Concrete Testing please do not hesitate to contact us
