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Have you ever wonder at the materials your home is made of? Well, even if it’s made of wood, most probably has structure of element that holds and made of cement. A lot of us take for granted about cement; it’s a big help to build our house or any structural. There’s a lot more to know about this humble building materials, because understanding cement and concrete can help your construction cost down and create a sturdy, well-made structure. If we ask our self what is cement really? Cement is more than just sand a bag-its actually made by clinker (type of ash or cinder), gypsum and other materials that are ground together. Cement is the most active component of concrete and becomes a powdery binder when mixed with minerals aggregate (gravel and sand) and water. Mixing cement should be done thoroughly and uniformly to produce a strong and durable concrete. In preparation of concrete, one part cement, two parts sand, and three parts aggregate is placed into a mechanical mixer. If you don’t have a mixer you can mix it using with shovel. The less water there is in relation to cement, the strong the final concrete will be. This will also prevent shrinkage and cracking. As rule of thumb, five or six gallon of water is used per 941lbs bag of cement. Since concrete has a rather low tensile strength and weakens on long spans, it is strengthened using steel rods called reinforcing bars. Air bubbles also weaken concrete so commercial concrete vibrators onto construction site to eliminate any air that has been trapped during the pouring of liquid concrete.