Civil Engineering

10763 Words Feb 1st, 2013 44 Pages
Civil Construction Materials. | |
The material used for construction or the materials used to produce other materials which may be used in construction is called construction material. construction material are: Cement,sand ,water. Concrete, Lime, Stones, Paints and Varnishes, Wood and Timber, Engineering Metals, Bituminous materials and Plastics, Rubber and Glass, Miscelleneous materials, http://www.aboutcivil.org/engineering-materials.html Cement
Bricklayer Joseph Asp din of Leeds, England first made portland cement early in the 19th century by burning powdered limestone and clay in his kitchen stove.
Portland cement, the basic ingredient of concrete, is a closely controlled chemical combination of calcium,
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* For brick work fine sand used must not be less than 1.2 to 1.5 and silt is preferred is 4 percent generally. * Concreting work require coarse sand in modulus of 2.5 to 3.5 with not less than 4 percent silt content. * http://www.sereneinteriors.com/building-construction/types-of-sand-construction.html water Pure and hygienic water is not only important for our life but also needed for quality construction. From the foundation till the completion of construction we must ensure the quality of water used. Here are few tips to know about water.
Water is one of the most important elements in construction but people still ignore quality aspect of this element. The water is required for preparation of mortar, mixing of cement concrete and for curing work etc during construction work. The quality and quantity of water has much effect on the strength of mortar and cement concrete in construction work. Quality of Water
The water used for mixing and curing should be clean and free from injurious quantities of alkalis, acid, oils, salt, sugar, organic materials, vegetable growth and other substances that may be deleterious to bricks, stone, concrete or steel. Potable water is generally considered satisfactory for mixing. The pH value of water should be not less than 6.
Effects of Bad Quality Water on Cement Concrete
It has been observed that certain common impurities in water affect the
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