Spray-on fireproof coatings are an effective method for protecting equipment and structures from fire and heat. However, these materials tend to have particular advantages and disadvantages. Read this article to learn about the properties, indications and applications for these coatings. An intumescent paint is a type of coating that is a fire retardant that also…
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 fireproof and acid proof material. 3. It is a good insulator of heat and electricity….
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…
There are variety of plastics made to suit different uses. The typical uses of plastics in buildings is listed below: 1. Corrugated and plain sheets for roofing. 2. For making jointless flooring. 3. Flooring tiles. 4. Overhead water tanks. 5. Bath and sink units. 6. Cistern hall floats. 7. Decorative laminates and mouldings. 8. Window and door frames and…
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…
The glass may be broadly classified as: 1. Soda-lime glass 2. Potash lime glass 3. Potash lead glass 4. Common glass and 5. Special glasses. 1. Soda Lime Glass: It is mainly a mixture of sodium silicate and calcium silicate. It is fusible at low temperature. In the fusion condition it can be blown or…
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…
It is a naturally available metal in the form of ores which contain small amount of iron and sulphur. After removing impurities, it is processed electrolytically to get purest metal. This metal is almost indestructible. Copper scrap can be processed to get original copper. Properties of Copper 1. It is having reddish brown colour. 2. Its structure…
A ferrous material is the one in which iron is a main constituent. Iron ore is first converted into pig iron and then pig iron is subjected to various metallurgical processes to mix different percentage of carbon and to get the following three useful ferrous materials: 1. Cast iron—carbon content 1.7% to 4.5% 2. Wrought…
The term ferro-cement implies the combination of ferrous product with cement. Generally this combination is in the form of steel wires meshes embedded in a portland cement mortar. Wire mesh is usually of 0.8 to 1.00 m diameter steel wires at 5 mm to 50 mm spacing and the cement mortar is of cement sand ratio of 1:2…