Concrete is known to provide strength, durability and resilience to structures. But this means that concrete lacks the flexibility to deal with environmental changes. This can lead to cracks forming in the concrete.
These cracks can occur due to plastic shrinking, constructional movements, overloading, or even corrosion. Cracks don’t just affect the visual appearance of the structure, they also are often the first signs of distress. Assessing these cracks to check for their size, type and reason can help you limit the damage that would otherwise occur.
Given the importance of concrete cracking assessment, it is vital you make use of the best assessment services. For all concrete consulting services, including evaluation of cracks in concrete, look no further than C3S.
The Best Concrete Cracking Assessment Services
Some of the concrete cracking assessment services offered by us are:
The first step in evaluation of cracks in concrete is to look at the structure. Visual inspection can provide information about the type, cause and extent of damage. It can also tell which type of destructive or non-destructive testing techniques would be suitable for further investigation.
Ultra-Sonic Pulse Velocity (UPV) Testing
This is a non-destructive test to check the integrity and homogeneity of the concrete structure. In this test, ultra-sonic pulses of frequency between 50Khz and 54Khz are produced, using an electro-acoustical transducer. These ultra-sonic waves are then passed through the concrete structure, and the velocity and time of travel are measured.
Greater pulse velocities indicate high density, integrity, and elastic modulus of the structure. Lower velocities can indicate discontinuities in the cross sections, such as cracks and cover concrete delamination. With further calculations, the depth of surface cracks can also be measured using this method. Apart from information about cracks, UPV testing is also used for qualitative assessment of the strength of the concrete, its gradation in different locations of the structural members and plotting the same. Structures such as voids and honeycombs can also be detected inside the concrete.
A common cause of cracks in concrete structures is rebar corrosion. In fact, around 40% of concrete structures fail due to corrosion. To detect the extent of corrosion, we provide carbonation depth measurement test and soluble chloride content test.
One of the causes of rebar corrosion is that the carbonation of the structure reduces the pH level of the cement paste. When the pH drops below 11, rebar corrosion starts. In this test, a phenolphthalein indicator is used to identify the reach of the corrosive agents. In the soluble chloride test, the level of chlorides is measured. High soluble chloride content can also cause corrosion.
Apart from these, we offer other forensic investigation techniques as well, which can be used for concrete crack evaluation and repair.
Why Choose Our Services
We have a highly skilled and knowledgeable team with wide experience in the cement chemistry, concrete testing and petrographic analysis. In addition, we have experience of handling all types of projects, whether it is residential buildings, highway projects or even construction of an airport runway.
So, contact us now to work with the most trusted name in the concrete consultation service industry!