Week_02 Materials

 Before and after application of bump maps to my building

1.       Concrete

·         Coarse granular material, aggregate particles, glue together

·         Used twice as much as steel in buildings

·         Aggregate: Mixed with coarse gravel, crushed rocks ie limestone or granite along with sand

·         Cement: binds the aggregate

·         Water mixed with dry composite, makes a semi liquid mix, solidifies and bonds other components together

·         Has a high compressive strength, low tensile strength and thus needs to be reinforced with materials with high tensile strength, like steel.

·         Elasticity is constant at low stress levels,  it shrinks as it matures, and it cracks due to shrinkage and tension

·         Long duration forces on concrete make sit prone to creep (deformation)

·         Expansion, corrosion, freezing of trapped water, fire or radiant heart effect the structure and the concrete.  Reinforcement bars can also crack the cement due to expansion with heat pushing the cement outwards

2.       Glass

·         Made by melting sand, soda ash, dolomite and limestone together,

·         Mix raw materials into a batch, melting furnace, molten glass at 1550 degrees Celsius

·         Float baths, 1100 degrees Celsius, makes a flat sheet of glass,

·         Cooling room 600 degrees C

·         Enters washing machine at 70 degrees c, then is cut to size

·         recyclable,

·         prone to shattering and cracking if enough force is applied, and

3.       Steel

·         Carbon and iron alloy

·         Iron is smelted from its ore in commercial processes, and the liquid is continually cast into long slabs or ingots, then heated in a soaking pit and hot rolled into slabs, blooms or billets (poles, rods, wire)

·         Used in construction of roads, railways, other infrastructure, appliances and buildings.

·         Long steel is used as reinforcing bars and mesh in reinforced concrete

·         If subjected to intense hear, reinforcing steel bars in concrete can expand and crack the concrete

·         Steel is prone to rust if subjected to sunlight and salt attack, water and oxygen

4.       Marble

·         Is a non foliated metamorphic rock composed of recrystallised carbonate minerals, Is metamorphosed limestone

·         Artificial marble is made by combining marble dust and cement or synthetic resins to make “cultured” marble and faux marbling

·         Weather has a degrading effect on it:

·         Rain water, with the help of atmospheric gases results in dissolution of marble and creates salt movement in  the microstructure

·         Polishing and detail is lost when weathered, not smooth and crisp edges are lost

·         Low temperatures cause freeze thaw properties and stresses the material

·         It deteriorates due to weathering, but is extremely durable so it doesn’t allow absorption of a lot of water, is highly reactive when exposed to acids or even mildly acidic rain water

·         The pores of marble allows greater dissolution than typical round pores, and is coupled with marble’s inherent soluability 

This lesson saw the use of diffuse, specular and bump maps to apply to our building. It was a bit tedious with the changing between layers and the placement of the plugin of the cry engine tiff into the right folder was annoying. Crazy bump was very easy to use and it was interesting to see the texture become 3d on the program. It is an interesting tool and i plan to make very interesting textures with it in the future