Category: Miscellaneous Building Materials

Glass, plastics, bitumen, asbestos, paints, distemper and varnishes are some of the miscellaneous materials used in building constructions. Their properties and uses are briefly presented in this chapter.

Category: Miscellaneous Building Materials Roofing and Flooring Tiles

These are also clay products like brick but are thin. Depending upon their use, building tiles may be further classified as 1. Roofing tiles 2. Flooring tiles and wall tiles. 1. Roofing Tiles: Roofing tiles are used to cover sloping roofs. They are supported on wooden reapers. Sometimes light gauge steel or steed rods are also used as reapers. After supporting on

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Category: Miscellaneous Building Materials Solid and Hollow Concrete Blocks

Solid and hollow concrete blocks are manufactured in factories to meet the requirements of building blocks in cities and towns. These blocks may be called as artificial stones, since they replace the stones in the masonry construction. They are manufactured with lean mixes of cement, sand and aggregates of sizes less than 12 mm. Instead of sharp edged aggregates, round

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Category: Miscellaneous Building Materials Varnishes

Varnish is the solution of resins or resinous substances like amber, copal, shellac, gum resin etc. in solvents like oil, turpentile, alcohol etc. Depending upon the solvents used varnishes are classified as, oil varnishes, turpentile varnishes, spirit varnishes and water varnishes. The desirable characteristics of an ideal varnish are 1. It should give glossy surface. 2. Should be durable. 3.

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Category: Miscellaneous Building Materials Distempers

Distempers are the cheaper variety of paints in which chalk is used as base and water is used as a carrier. The emulsifying agent which is commonly used is glue or casein. Distempers are available in powder They are to be mixed with hot water before use. The surface to be distempered should be thoroughly rubbed and cleaned. The cracks, if

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Category: Miscellaneous Building Materials Paints

Paints are applied on the surfaces of timber, metals and plastered surfaces as a protective layer and at the same time to get pleasant appearance. Paints are applied in liquid form and after sometime the volatile constituent evaporates and hardened coating acts as a protective layer. Constituents of Paint The essential constituents of paints are: 1. Base 2. A vehicle

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Category: Miscellaneous Building Materials Asbestos

Asbestos is a general name for several varieties of fibrous minerals which are available in nature. But presently, most of the commercial asbestos produced is ‘chriotile’ [Mg6SiO11(OH)6.H2O]. Properties of Asbestos 1. It is flexible, soft and non-porous. 2. It is fire proof and acid proof material. 3. It is a good insulator of heat and electricity. 4. When it is

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Category: Miscellaneous Building Materials Bitumen

Ashalt, bitumen and tar are referred as bituminous materials, which are essentially hydrocarbon materials. The asphalt is a mixture of inert mineral matter lime alumina, lime, silica etc. and a hydrocarbon known as asphaltic bitumen. In some places like Trinidad and Bermudez, asphalt is available in nature at a depth of 3 to 60 metres. It is known as natural asphalt. Common variety

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Category: Miscellaneous Building Materials Plastic

Plastic is an organic material prepared out of resin. It may or may not contain fillers, plasticisers and solvents. Plastic may be defined as a natural or synthetic organic material which are having the property of being plastic at some stage of their manufacture when they can be moulded to required size and shape. Shellac and bitumen are the natural resins used as

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Category: Miscellaneous Building Materials Glass

Silica is the main constituent of glass. But it is to be added with sodium potassium carbonate to bring down melting point. To make it durable lime or lead oxide is also added. Manganese oxide is added to nullify the adverse effects of unwanted iron present in the impure silica. The raw materials are ground and sieved. They are mixed

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