Bricks, Stone & Glass Flashcards
(20 cards)
What materials can bricks be made from (4)
Clay, calcium, silicate, concrete
How are clay bricks produced
By firing shaped clay units to a temperature of about 1000 degrees c
What is an important factor when determining the frost resistance of a Clay Brick.
Size distribution and degree of inter connectivity of pores
What are the three types of clay bricks
Common, Facing, Engineering
Why should allowance within the building design be made with regards to expansion in bricks
Bricks are ale to draw in moisture from the surrounding air
What materials form Calcium silicate bricks
flint, sand, lime
What is the main advantage of using calcium silicate bricks
Highly resistant to frost damage and contain hardly any soluble salts.
How are Igneous stones formed
from molten magma that cools rapidly
what are the two main types of Igneous Stone
Basalt, Granite
What forms sedimentary stone
small particles of igneous rocks such as quartz with fragments of decayed animal or vegetable matter.
In sedimentary stone, what bonds together the quartz and decayed animal matter
silica, calcium carbonate, clay, iron oxide.
Sedimentary stones have natural bedding planes which mean their bonding is…
Weak
What are the two main types of Sedimentary Stone
Sandstone and Limestone
What is Metamorphic Stone
Stone which has been changed by heat or pressure thus increasing its crystallinity.
What are the two main types of metamorphic stone
Marble, Slate
How is slate formed
by introducing high pressure to clay to form shale, and then introducing heat to form slate.
What is inorganic glass
fusion products which have failed to crystallise on cooling to room temperature.
What are the three common types of glass
soda lime silicate glass (common glass), borosilicate glass (pyrex), alumino silicate glass (fibre glass)
What is the mechanical definition of glass
it’s an elastic brittle solid which is extremely sensitive to stress concentrating effects of surface defects.
Windows are commonly made from what two types of glass
toughened glass, laminated glass
