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It is essential to verify the quality of cement on-the-spot at the instance of initial check. It is not feasible to verify all the engineering qualities of cement on-the-spot however there is certain field test which will provide us with an approximate idea with regard to the quality of cement.
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Guidelines for Consumers to Pick the most Excellent and Quality Cement
Pick the most Excellent and Quality Cement It is essential to verify the quality of cement on-the-spot at the instance of initial check. It is not feasible to verify all the engineering qualities of cement on-the-spot however there is certain field test which will provide us with an approximate idea with regard to the quality of cement. You have to be assured that the cement comes from top cement companies in India.
Apart from having awareness of different grades of cement, a customer ought to also take note of a handful of things. Look for cement suppliers who are capable of offering quality cement that too from all cement companies in India. Ensure that you purchase from a reputed manufacturer. • Check whether the cement bag has BIS (Bureau of Indian Standards) mark on it. • The bag should contain the name of the manufacturer, trademark, plus date of manufacture.
Field tests to check the quality of the cement To evaluate the quality of cement on site, we can carry out the below-mentioned field tests:
Guidelines for Consumers • Manufacturing date The cement bag should contain the date of manufacture since it is significant as the power of cement decreases with age. • Colour The color of the cement should be uniform and it is normally grey with a tinge of greenish shade. The color of cement indicates whether it contains excess lime or clay as well as the level of burning. • Test by rubbing Rub a pinch of cement between fingers. The feel should be smooth while rasping. If it is coarse, then it means that sand has been used as an adulterant. • Test by inserting hand When you thrust your hand inside the cement bag then you should get a cool feeling. It signifies hydration reaction has not taken place inside the bag. • Drift test Add a small quantity of cement to a bucket of water. The cement should not float to the surface but it should sink and this shows the quality of the cement.
Guidelines for Consumers • Smell test Smell a pinch of cement. If you get an earthly smell then it comprises of pounded clay and silt as an adulterant. • Test existence of chunks Open the cement bag and see that there are no lumps. It will guarantee that no setting has occurred. • Shape test Take 100g of cement and make a hard paste. Set up a cake with sharp edges and put on the glass plate. This plate should be immersed in water. Watch that the shape should not be disturbed while settling. It ought to have the capacity to set and get strengthened. Cement is fit for setting under water likewise and that is the reason it is additionally called ' Hydraulic Cement'. • Strength test A chunk of cement 25 mm X 25 mm and 200 mm long is made and it is soaked in water for seven days. It is then supported on 15000 mm apart and it is stacked with a weight of 340 N, and when checked the chunk of cement should not show any signs of failure.
