Physical and Chemical Properties of Glass

What is glass: Glass is made from liquid sand. You can make glass by heating ordinary sand (which is mostly made of silicon dioxide) until it melts and turns into a liquid :glass a solid... or a liquid

The answer is both—and neither! There are widely differing opinions on how to refer to materials such as glass that seem to be a bit like liquids in some ways and a bit like solids in others Physical and chemical Properties of :Glass Glass is made up of sand, soda ash and limestone substances. 1 It is a hard material that is normally breakable and transparent Foamed or cellular glass is used as rigid. Glass fibers are used intertitles and for material reinforcenent.Also, used for acoustical and thermal insulation. Glass block is used to control light transmission , glare and solar radiation . Glass , however, is used most commonly to glaze the window, sash, and sky light .openings of building THE THREE MAJOR TYPES OF FLAT :GLASS float glass: It is vested in making canopies, shop fronts, glass blocks, railing partitions

Plate glass: Is used for display cases

Is used in glazing:. Sheet glass

:OTHER TYPES OF GLASS

Annealed glass Heat- strengthened glass Tempered glass Laminated glass Wi Patterned glass red glass

Patterned glass and Spandrel glass .Patterned glass and Obscure glass :Insulating glass .Is a glass unit consisting of two or more sheets of glass

.Tinted or heat- absorbing glass

Has a chemical a admixture to absorb a portion of the .radiant heat and visible light that strike it :Reflective glass has a thin Translucent metallic coating to reflect a portion of the ..light and radiant hat that stick it

Low emissivity(low-a) glass

Transmits visible light while celectively reflecting the .longer wave lengths of radiant heat

:SPECIAL USES FOR GLASS Glass has many applications both internal and external that play a vital role in the function .and design of a building Below is a list of some of the many uses of how glass is applied in the building

.:Important Properties of Glass

It absorbs, refracts or transmits light. It can .1 .be made transparent or translucent .It can take excellent polish .2 .It is an excellent electrical insulator .3 .It is strong and brittle .4 .It can be blown, drawn or pressed .5 .It is not affected by atmosphere .6 .It has excellent resistance to chemicals .7 .It is available in various beautiful colors .8 With the advancement in technology, it is .9 possible to make glass lighter than cork or .stronger than steel .Glass panes can be cleaned easily .10 . SOLAR ENERGY TRANSMISSION REDUCED ((35% TO 75% VISIBLE LIGHT TRANSMISSION REDUCED .(( 32% TO 72% The type of material: GLASS

Name: Nada and Nasra. Spandrel glass

Spandrel glass

Wired glass

Annealed glass Laminated glass Tempered glass

Float glass Patterned glass Obscure glass

Spandrel glass

Heat-Strengthened glass

Obscure glass