How Engineering Companies Identify The Quality Of Cement?
Cement is the key requirement for every type of building project. Among the rest of materials that are used together with cement, they are considered far more significant for a lasting durability. They act as a binder material to bind other material, including sand in a concrete. However, they must meet some particular standards during the manufacturing process.
They are supplied in a massive amount for building construction if they exist in a highly competitive construction sector such as the UAE. Despite the amount of cement to be acquired, engineering companies in UAE perform quality tests before using them to identify and match its quality with the project specification.
It is quite challenging to check every single property of cerement during the test. The best approach that most of the companies perform is a set of preliminary field tests that identify its quality. The outcome of these preliminary tests gives a rough estimation of its quality. Some of the common preliminary tests that are normally performed are as follows.
Packing Date:
The best way to check out cement quality is to look for the packing date on the bag. The more recently they are packed, the stronger their quality will be. Cement strength is normally reduces with the passage of time.
Color:
Quality cement has a uniform color. The general appearance of quality cement is of grey color together with greenish shade. This color indicates the quality of cement and signifies the amount of lime or clay together with the degree of burning.
Rubbing:
The rubbing test is quite common in the construction sector. A small amount of cement is taken in the fingers for rubbing. A smooth feeling of the material indicates its quality. If the fingers feel rough while rubbing it, they will be of poor quality due to contamination with sand.
Hand Insertion:
Often, a hydration reaction within the bag reduces the quality of cement. Engineering consultants in UAE recommend putting hand into the bag and look for a cool feeling within it. Such a feeling specify that none of a hydration reaction is caused within the bag.
Strength Test:
To perform a strength test for identifying the quality of cement, a block of cement is prepared having 25 x 25 x 200 mm width, height and length respectively. The block is kept in deep water for 7 days. Later, it is kept on supports and is loaded with 340N of weight. Tolerating the weight indicates that its strength quality.
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