A gorgeous building isn’t enough to make your dream of owning a long-lasting home a reality. More than showy features, you should concentrate on items that will stay a long time in your home.
Cement is one of the most important things that affect the building’s strength. As a result, you must guarantee that high-quality cement is utilized in the construction of your home. You may also judge your builder’s quality by looking at the type of cement he uses.
Don’t be concerned if you do not even know how to inspect cement quality. Read on to learn about the characteristics of high-quality best cement.
Which is the best cement for home construction?
The type of cement used in construction differs depending on the application. The selection of cement for a suitable application is influenced by elements such as the structure’s functional requirements, design specifications, durability qualities, and environmental circumstances.
Features of Best Cement for house construction
Its physical properties
The physical parameters of various cement mixtures used in the building are described. Cement quality is controlled by a few critical criteria. Good cement has the following physical properties:
Read: Step By Step Guide To Build Your Dream House
The fineness of the cement is determined by the particle size. The needed fineness of good cement is achieved in the final phase of the cement manufacturing process by grinding the clinker. Cement fineness is critical because cement hydration rate is directly proportional to cement particle size.
The capacity of cement to not shrink when hardened is referred to as soundness. Excessive free lime and magnesia cause delayed expansion, which is why good quality cement holds its volume after setting.
Cement strength is tested in three ways: compressive, tensile, and flexural. The water-cement ratio, cement-fine aggregate ratio, curing circumstances, specimen size and shape, molding and mixing methods, loading conditions, and age are all elements that affect the strength.
The most common strength test is compressive strength. A 50mm test specimen is obtained and subjected to a compressive load till it breaks. The loading sequence should last between 20 and 80 seconds.
While this test was once frequent in the early days of cement manufacture, it no longer provides any relevant information on the qualities of the material.
Cement Setting Time:
When water is added to cement, it sets and hardens. The amount of time it takes for cement to set depends on a number of parameters, including the fineness of the cement, the cement-water ratio, chemical content, and admixtures. The initial setting time of construction cement should not be too short, and the ultimate setting time should not be too long. As a result, two setting times are recorded:
- When the paste begins to stiffen visibly, this is the initial set (typically occurs within 30-45 minutes)
- When the cement hardens to the point that it can support some weight (less than 10 hours).
The Heat of Hydration:
Hydration is the chemical reaction that occurs when water is added to the cement. Hydration generates heat, which can alter the cement’s quality and can also help keep the curing temperature stable in cold weather.
On the other side, excessive heat generation, particularly in huge structures, might result in unwanted stress.
The presence of C3S and C3A in cement, as well as the water-cement ratio, fineness, and curing temperature, all, influence the heat of hydration.
When you mix cement with water, the water fills in the spaces where air would normally be. As a result, the bulk density of cement isn’t as critical as it once was. The density of cement varies based on the cement composition percentage.
Even if you buy the highest-quality best cement, you must store it properly to prevent the quality from deteriorating. To prevent air circulation, the cement bags should be stacked close together. At the construction site, they must be kept away from moist and damp regions. They should be covered with polythene during the monsoon season. Make sure the cement bag isn’t opened until you’re ready to utilize it for mixing.
Read: Which cement is best for house construction in your region: OPC or PPC?
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