Cement, concrete and mortar are polymer or cement-based binders, compounds or aggregate mixtures for joining components and forming structures. Although the words concrete and cement are often used interchangeably, cement is actually an ingredient of concrete. Cement is typically made by heating limestone until it nearly fuses. The material is then ground into a fine powder. When this powder is mixed with water, the cement undergoes a chemical reaction and hardens into a mass that is resistant to water. If concrete is mixed with water and other aggregates - such as sand, stone, or gravel - the mixture is called concrete. Cement generally accounts for approximately 10 to 15% of the concrete’s total mass. Cement is, however, the essential binding agent for concrete.
Portland cement and polymer concrete are two common types of cement, concrete and mortar products. Portland cement is the most common type of cement used today. It generally contains lime, silica, alumina, and iron oxide. Gypsum is later added to the mixture during the grinding process. Portland cement is stronger and faster setting than natural cement. A polymer concrete is a combination of cement, aggregates, and polymer resins. Adding polymer resins to concrete greatly increases its performance characteristics (e.g., strength properties, creeping, shrinking, chemical stability) and number of applications. Polymer concrete is more resistant to salt, chemicals, harsh weather, and traffic wear.
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Engineering Web: Cement Concrete and Mortar
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Cement and Concrete Standards Cement and Concrete Standards List of cement and concrete standards developed by ASTM committees: See ASTM International Information |
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Concrete - Wikipedia, the free encyclopedia Concrete is a construction material composed of cement (commonly Portland cement) as well as other cementitious materials such as fly ash and slag |
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Fiber Reinforced Concrete -- Subject Index -- CARBON FIBER REINFORCED CEMENT COMPOSITES IMPROVED BY USING CHEMICAL AGENTS 4034 -- HANDBOOK OF FIBER-REINFORCED CONCRETE. PRINCIPLES, PROPERTIES, |
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