Water is one of the most important elements in construction and is required for the preparation of mortar, mixing of cement concrete and for curing work in construction. The quality of water used has a direct impact on the strength of the motor and cement concrete in the construction work. The water used for curing and mixing must be free from high quantities of alkalis, acids, oils, salt, sugar, organic materials, vegetable growth, etc. that might be deleterious to bricks, concrete or iron.
Impurities in water can cause metal corrosion. There is a rusting problem in the steel provided in the RCC. It can introduce unwanted silt and clay into the concrete, adversely affecting the hardening process of concrete and also reducing its strength by an even 25%. Thus, the need to ensure the quality of water used during construction is vital.
Many a times, in spite of using the best raw materials, cement and tested water, concrete does not deliver the required results in the process of construction. This is basically because the water-cement-sand ratio used was either less or more. Since it’s a chemical process when the water is mixed in mortar, it reacts with cement and forms a binding paste. The water actually helps in filling the small spaces in the sand creating a close cohesion of sand particles and cement.
Water is the very foundation of the construction process and its importance is undeniable. IS 456:2000 standards lay certain parameters for which quality of construction of plain and reinforced concrete must be tested.
It has been observed that certain common impurities in water affect the quality of mortar or concrete. Quite often, in spite of using the best materials i.e. cement, coarse sand, coarse aggregate etc. in cement concrete, required results are not achieved. Most Engineers/Contractors think that there is something wrong in the cement, but they do not consider the quality of water being used.
When water is surfaced with impurities, then it can result in the following ill effects in construction:
Points to be noted with respect to the quality of construction water:
Limits of Alkalinity and Acidity:
There are various tests on water to check its quality for suitability of concrete construction. Quality of water for construction use is determined in the laboratory. This test is done as per clause 3.1.1 of IS 3025.
In civil engineering projects, large quantities of different materials are used and it is necessary to test these materials according to certain set patterns within desirable frequency of testing in order to ensure that the quality of the final product is maintained. Water is one such important material that is tested.
Water from each source shall be tested before the commencement of work and thereafter once in every three months till the completion of the work. Water from municipal sources needs to be tested only once in six months. Number of tests for each source shall be three.
Water is obtained from various sources; therefore, the water should be tested before the construction work progresses. We check the essential parameters for the construction water analysis, this includes:
Other major parameters as per the IS 456:2000 standards are:
At Atlas Lab, we conduct various tests on the construction water to check its quality for the suitability of concrete construction. We are a state-of-the-art laboratory carrying out various tests and provide its analysis services to large national and international clients on a global scale.
For any further technical or commercial inquiry one can contact us on our website: www.atlaslab.in
Or on our email: email@example.com
Or call on : +91 93214 24026
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