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Oral presentations:

Oral presentations:. GLASS. Da Silva_Maldonado_Melendez. R eally think you know everything about glass?. W hich is the glass?. What are their properties?. Applications which are more common in the construction?. Da Silva_Maldonado_Melendez.

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Oral presentations:

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  1. Oral presentations: GLASS Da Silva_Maldonado_Melendez

  2. Really think you know everything about glass? Which is the glass? What are their properties? Applications which are more common in the construction? Da Silva_Maldonado_Melendez

  3. Don't worry, In this presentation you can find the answers to these questions Da Silva_Maldonado_Melendez

  4. Da Silva_Maldonado_Melendez

  5. Glass, amorphous substance made from silica (SiO2) melted at high temperatures with borates or phosphates. Also found in nature, for example in the "obsidian", a volcanic material, or the enigmatic "tektite". Glass is an amorphous substance because it is neither a solid nor a liquid but is in a glassy state in which the molecular units are arranged haphazardly, but have sufficient cohesion to present mechanical rigidity. The glass cools into a solid without causing crystallization, warming can recover a liquid form. It is usually transparent, but can also be translucent or opaque. The color varies depending on the ingredients used in their manufacture Da Silva_Maldonado_Melendez

  6.  know when they invented glass? Da Silva_Maldonado_Melendez

  7. The invention of glass took place, it seems, almost by accident, around 4000 years ago in the eastern Mediterranean Da Silva_Maldonado_Melendez

  8. Properties of Glass • Optical properties: common glasses are colorless, transparent and translucent. color can be added to glass without losing its transparency. • Mechanical properties: glass is hard but fragile, so it’s not easily scratched but cannot resist strong impact. • Thermal properties: When heated at its melting temperature, it passes in to a liquid state. • Chemical properties: the glass resist the action of chemical reagents. Only hydrofluoric acid. Affects them • . Da Silva_Maldonado_Melendez

  9. know what are the advantages and disadvantages of glass? Da Silva_Maldonado_Melendez

  10. Advantages Isolate the soundsAllows create internal climatesControls the solar radiation Disadvantages FragileDon't have big sizesNeeds structures Da Silva_Maldonado_Melendez

  11. Glass in Construction While the use of glass in construction was previously quite limited to grand designs and office buildings it is starting to become a core structural and design element in many homes. Glass facilitates natural light and opens up rooms allowing smaller spaces to look bigger as well as facilitating a natural indoor/outdoor flow which often enhances the tranquility as well as the value of your home. Glass is also relatively inexpensive and fully recyclable, an important consideration in the current era of heightened environmental consciousness. Glass use in construction has increased dramatically due to the rapid changes in glass production and technology. Previously glass was thought to be quite a fragile building material and many steered away from it because of this. Modern glass, however, is not only spectacular to look through but it is safer, stronger and energy efficient. Da Silva_Maldonado_Melendez

  12. Glass in Construction The different types of glass used in construction have many different applications and features according to the destination that has Along with concrete and steel, glass makes up one of the most used materials in construction today. Glass used in construction: • Tempered Glass • Etched glass • Laminated Glass • Glass Firewall • Curved Glass • Thermo-hardened glass • Anti-reflective glass • Molded Glass • Flat Glass • Stained Glass • glass blocks. Da Silva_Maldonado_Melendez

  13. know which types of glass is more used in construction? Da Silva_Maldonado_Melendez

  14. Most often used in the construction of buildings is flat glass, laminated glass and glass blocks. Da Silva_Maldonado_Melendez

  15. Glass in Construction • Flat glass is a glass sheet, manufactured doing floating molten glass on a layer of molten tin. This method gives uniform thickness and a very flat surface. This is the most common glass used in construction • Laminated glass, made up of two sheets of glass that are coupled by a sheet that stands between them, this is usually a resin sheet. The sheet can be both transparent and translucent. • Glass blocks, are hollow construction blocks, with nerves on the sides, which can be joined with mortar and used in exterior walls or internal partitions. Da Silva_Maldonado_Melendez

  16. Glass in the home In the past glass was mainly utilized for windows to allow some air and light in to rooms. Today glass is utilized in the construction of several elements of exterior and interior architecture. Exterior glass architecture includes facades, display windows' skylights, skywalks, entrances, revolving doors, canopies, winter gardens and conservatories. All of which allow homes to be bathed in natural sunlight with gorgeous outdoor views. Interior glassarchitecture can beusedforstaircases, elevatedwalkways and even as traditionalwalls. There are somehouses in whichall of thewalls are actuallyglass. Suchhighquantities of glasspreviouslycompromisedotheraspectssuch as theheating and coolingrequirements. Oftenglassarchitecturewouldincurhighheatingcosts in winter and coolingcosts in summer. Da Silva_Maldonado_Melendez

  17. Glass in the home Fortunatelysuchgreatprogress has beenmade in theglassindustrythatwenowhaveaccess a variety of differentkinds of glasseachwithfantasticbenefits. Onesuchexampleisglasswithspectrally-selectivequalities, whichallows light tostreamintothehousewithoutbeingharmfulordegenerativetooccupants and theirbelongings. Da Silva_Maldonado_Melendez

  18. Conclusions. We can conclude that glass is a material that has different and very useful properties, having great significance in construction Da Silva_Maldonado_Melendez

  19. Bibliography. • http://www.monografias.com/trabajos11/vidrio/vidrio.shtml • http://www.scribd.com/doc/15628856/El-Vidrio-en-la-construccion • http://en.wikipedia.org/wiki/Glass • http://en.wikipedia.org/wiki/Calculation_of_glass_properties • http://www.lenntech.com/glass.htm • . Da Silva_Maldonado_Melendez

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