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How much portland cement to sand mixture for a strong concrete mix?
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What can i use to make strong mortar while camping?
It would be difficult to make morter while camping unless a person has hydrated lime or Portland cement to add to the morter mixture. This is what makes the mixture very strong.
What is the function of cement in making concrete?
Cement, or more correctly, Portland cement, named after the person who perfected making it, is essentially limestone that is burned in a kiln, then pulverized to a fine, fine dust. Think of Portland cement as 'Instant limestone', because when you mix it with water, the water chemically combines with the cement to form a hard, hard product that is durable, has high compressive strength, and resembles limestone. After the Portland cement dust is made, it is mixed with a large proportion of clay -- just plain, ordinary potter's clay -- and also a bit of gypsum and other trace ingredients that all work to make the cement set up harder and faster. In concrete, Portland cement makes the concrete "cure", to set up, that is, to chemically combine with the water. The product is a very durable, very strong, very fast-curing aggregate, using sand and stones to fill in between each other and the cement particles.
Why is a chemical reaction in cement so important to concrete?
to make it strong
The difference between setting and hardening in cement?
SettingSetting begins to occur after the concrete is mixed and even before pouring. The cement in the concrete begins to stiffen after mixed with water. The concrete is beginning to change from liquid form to solid form. During the setting process, the concrete does gain strength, which is the beginning of the hardening process. When the water ingredient is added to the concrete mix, the concrete is still pliable and flexible, sort of a paste. There is two stages of setting: initial and final setting. Initial setting is when the concrete loses it flexibility and begins to harden. Final setting is when the concrete can sustain some load, but still has some moisture within the mixture.HardeningHardening of the concrete is the stage when the mixture gains strength. The cement ingredient begins to attach itself to the aggregate as the water dries off the mixture. The hydration of water is what starts the hardening process. It generally takes five to seven days for the concrete to complete the hardening process. The easiest way to increase the strength of concrete is to add cement to the mixture. The more water used in the mixture, the weaker the concrete and it will also delay the hardening process. Once the concrete has hydrated all the water from the mixture, the hardening process is complete and the concrete is as strong as it will get.
What is reinforced concrete?
Reinforced concrete is concrete reinforced with steel bars because although concrete is very strong in compression (depending on its components) it is very weak in tension and the steel bars make up for the required tensile strength.
Why is strength of concrete so important in construction?
The strength of concrete depends on the mix used to make it- ratio of cement, sand, gravel and water. If the mix does not produce a concrete that is strong enough, the concrete will break.
How do you know if your stairs are cement or concrete?
um, they'll be hard. duh. ----------------- concrete is made of cement, sand and aggregate (stone, gravel, etc) so its a redundant question. Cement by itself is not very strong, its is a binder used to make concrete. In some cases sand is also the aggregate (QuickCrete is one product name)
What stronger brick or cement?
http://simscience.org/cracks/advanced/concrete2.html A common mistake people make is to use the words cement and concrete interchangably. It is important to remember that cement is only a component of concrete and concrete is the structural material. The cement used in concrete is not used as a building material because it would be too expensive and not as strong as concrete. So when you see a parking garage, a driveway, a sidewalk or a road remember it is made of concrete, not cement. And, by the way, that funny looking truck is a concrete mixer, not a cement mixer! But, if cement is not concrete, then what is it? Cement is a general name for a material that binds other materials together. Yes, it is another name for glue. There are many materials which we would classify as cements and they are usually identified with certain uses, and can produce different types of "concrete". The type of cement used to make the riding surface of some of our roads (blacktop!) is called asphalt cement. It is a petroleum bi-product, and it binds rock into the road material we call asphaltic concrete.
What are houses in Dubai made of?
People who are from UAE have houses made from strong cement but rest bricks.
What is a concrete reinforcer?
Concrete reinforcer increases the strength of a concrete. It is designed to bond, strengthen, prime and seal concrete cement, plaster, stucco and masonry. It can be used to permanently bond new concrete to old concrete, or other surfaces such as wood, hardboard, brick, ceramic tile, concrete block and metal.It is used to prevent cement and group from cracking.Attach new concrete to old concrete and other surfaces.It can be used inside and outside of the housesSupport for concrete to strong foundation
What home does India have?
In India the houses are built accordingly ... Each and every room has 4 concrete cement pillars built on Strong Iron Rods.. the walls are made from stone bricks which are plastered with cement outside to give it a flat look ,then painted ,the Roofs are made with Concrete Cement, with iron rods laid inside..
What is Reinforced cement concrete-RCC?
Concrete is very strong in compression but weak in tension. RCC is concrete with reinforcing steel bars in it. Steel is a really good material in tension. Steel carries the tensile load and thus RCC is strong in tension too. However, designers still try to ensure concrete is in compression wherever possible.
