Tuesday, October 23, 2012

Week 2 - Material Properties : Glass


GLASS


 What is the process of making the material:
Lightning striking sand melted it into long, thin tubes of glass, and volcanoes erupting melted rocks and sand into glass.
The earliest glass made by humans was probably a glaze on ceramic pottery made somewhere around 3000 B.C.
Today, three inexpensive ingredients, sand, soda ash, and lime, are melted together to make glass. This is done in large furnaces at high temperatures until the mixture become a syrupy mass. When this syrup cools, it is glass.

How long will the material last: Does not decompose

 

What makes the material corrode: Very few substances can corrode glass, only very specific acids can corrode and dissolve glass
 

What are the material's structural pros and cons: 
PROS: Lets light in easily, add austhetic design features to building, easily made and manipulated 
CONS: breaks easily, fragile
 

What is the material typically used for: windows and drinking vessels

What are the material's environmental impacts: Making glass  adds pollution to the environment and effects the greenhouse  

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