ConcreteP1F

- Concrete (in its simplest form) is made from aggregates, sand, and water. Aggregates are used for the paste, sand for texture, and water holds everything together.
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- Concrete today is composed of a variety of dry materials such as cement, fly ash and sand. These are then mixed with water to form a hardened paste mixture, which is used to form a variety of shapes and forms.

- Cement, which is the main component of modern concrete, is made up of materials such as limestone, clay, gypsum, chemical additives and gravel. The sand used in concrete is course sand made from ground glass. []

Concrete solidifies and hardens after mixing with water and placement due to a chemical process known as hydration. The water reacts with the cement, which bonds the other components together, eventually creating a stone-like material

Concrete is strong in compression, as the aggregate efficiently carries the compression load. However, it is weak in tension as the cement holding the aggregate in place can crack, allowing the structure to fail. Reinforced concrete solves these problems by adding either steel reinforcing bars, steel fibers, glass fiber, or plastic fiber to carry tensile loads. http://en.wikipedia.org/wiki/Concrete cement mixers: http://www2.northerntool.com/construction/cement-mixers.htm how cement is made??: http://www.mine-engineer.com/mining/cement.htm concrete ingredients: http://www.tpub.com/content/construction/14043/css/14043_150.htm  Although the terms cement and concrete often are used interchangeably, cement is actually an ingredient of concrete. Concrete is basically a mixture of aggregates and paste. The aggregates are sand and gravel or crushed stone; the paste is water and portland cement. Concrete gets stronger as it gets older. Portland cement is not a brand name, but the generic term for the type of cement used in virtually all concrete, just as stainless is a type of steel and sterling a type of silver. Cement comprises from 10 to 15 percent of the concrete mix, by volume. Through a process called hydration, the cement and water harden and bind the aggregates into a rocklike mass. This hardening process continues for years meaning that concrete gets stronger as it gets older. http://www.cement.org/basics/concretebasics_faqs.asp
 * //What is the difference between cement and concrete?//**

//Why does concrete crack?// Concrete, like all other materials, will slightly change in volume when it dries out. In typical concrete this change amounts to about 500 millionths. Translated into dimensions-this is about 1/16 of an inch in 10 feet (.4 cm in 3 meters). The reason that contractors put joints in concrete pavements and floors is to allow the concrete to crack in a neat, straight line at the joint when the volume of the concrete changes due to shrinkage http://www.cement.org/basics/concretebasics_faqs.asp


 * ~ Cement Compound ||~ Weight Percentage ||~ Chemical Formula ||
 * ~ Tricalcium silicate ||~ 50 % ||~ Ca3SiO5 or 3CaO.SiO2 ||
 * ~ Dicalcium silicate ||~ 25 % ||~ Ca2SiO4 or 2CaO.SiO2 ||
 * ~ Tricalcium aluminate ||~ 10 % ||~ Ca3Al2O6 or 3CaO .Al2O3 ||
 * ~ Tetracalcium aluminoferrite ||~ 10 % ||~ Ca4Al2Fe2O10 or 4CaO.Al2O3.Fe2O3 ||
 * ~ Gypsum ||~ 5 % ||~ CaSO4.2H2O ||

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proportions: http://www.cement.org/basics/concretebasics_concretebasics.asp Brand Name ideas: Cemensational Slogan Ideas: We never crack under pressure Logo Ideas:

Introduction: ====Our company has been assigned a project, that was to make, inexpensive, concrete for Haiti so their homes can be sable without having to pay a high price for it. Concrete is mostly used to make any type of architectural structures. You may ask, what is the difference between concrete and cement? Well, the two terms are used interchangeably but cement is actually one of the many elements used to make concrete. Portland cement is not a brand name, but the overall name for the kind of cement used in concrete====

Concrete Mix -->http://www.cement.ca/images/stories/concrete_mix.jpg 