Chapter 10, CH. 11 Materials
Which of the following statments is true in relation to the physucal properties of ceramics? 1. Ceramincs have a high thermal and a high electrical conductivity 2. Ceramics have a low thermal and high electrical conductivity. 3. Ceramics have a low thermal and a low electrical conductivity
3
Hoover Dam is ___________feet high, __________ feet thick at the top and ____________ feet at the bottom,
726, 45, 660
A mold must be __________% larger when forming ceramics?
8
A mold has to be ____________ larger than the final product.
8%
Cement manufacturing requires _________ separate steps.
80
Almina Silicates are made of
Al2O3 and SiO3 Aluminum oxide and Silicon oxide
__________________is a finely pulverized material consisting of lime, silica, alumina and iron.
Cement
A hard Brittle compound , can be matallic and non-metallic -
Ceramics
____________________ are marble sized pieces of the cement mix after drying.
Clinkers
Ceramics have much higher______________strength than other mechanical streghts
Compressive
______________________ strength is the most important property of concrete and its best property.
Compressive
__________________ is a monolithic ceramic product of aggregates bonded with cement.
Concrete
________________________ is when a crack tends to grow in concrete.
Crack propagation
_______________-is reducing the porosity of a ceramic body and is a three step process.
Densification
Fusing ceramic particales together by high temperature is the basis of ________________.
Die Pressing
Forcing material through a pre-determined shape(think play dough machine)
Extrusion
Heating clay to cure/harden it-
Firing
The specially preppared finely ground glass powder used in producing porcelain is called____________.
Frit
The Art of working with Glass.
Glazing
Ceramics before it is fired is called ______?
Green
The Primary Post processing method for ceramics is _________?
Grinding
The use of high pressure and high heat to make ceramics more dense.
Hot Isostatic Pressing
_______________ cement is a cement that hardens while submerged in water.
Hydraulic
Ceramics are force into a pre-determined shape under pressure that is much like a plastic process
Injection molding
Portland cement gets its name from?
Isle of Portland in the UK
Uncured clay spunin rotating molds
Jiggering
A furnace that bakes or cures clay
Kiln
The three types of fiber reinforced cement are:
Low fiber, higher fiber, and high fiber
Ceramic that contains only one element
Monophase
The principal elements of naturally occurring clay are
O2,Al,Si
______________________ also called porous concrete has high porosity for applications that need storm water and runoff management.
Pervious concrete
Ceramics than contain two or more elements
Polyphase
Silicon Carbide and aluminum oxide are examples of _____________________ ceramics
Polyphase
__________________ cement is made from finely pulverized materials of lime, silica, alumina, and iron.
Portland
__________________________ Concrete accounts for 75% of all concrete made.
Ready Mixed
_______________ is typically solid bar stock used to overcome the brittle nature of concrete.
Rebar(reinforcement bar)
A high melting point ceramic used for Crucibles and Kilns
Refactory Ceramics
The primary ingredient in glass is ______________.
Silica
Which of the following is NOT an advanced ceramic-- -Silicon carbide -Silica -Silicon nitride -Alumina
Silica
The 1st Step in Firing or Densifacation
Sintering
Ceramic poured in a mold and allow to dry partially then the excess poured out.
Slip Casting
The manufacturing process used to form hallow ceramic products (vases and sinks) is
Slip casting
________________ test involves filling a slump cone and puddling it 25 times with a rod then striking off the top of the cone.
Slump
The test used to determine consistency of concrete is best known as a ______________.
Slump test
The most common type of glass is ________________which is the type most people are amiluar with.
Soda-lime
Ceramics made from solid blocks of clay like on a pottery wheel is _______________casting?
Solid
Bricks, drain tile and flues are ceramic products classified as
Structural clay
Ceramics are known for their excellent
Thermal stability
Which of the following ceramic compond would commonly be used for blades and cutting tools?
Tungsten carbide
Portland cement __________ is a general purpose used in residential applications
Type 1
Portland cement ____________ is minimal heat and used in such applications as building dams.
Type 4
When Ceramics are heat to a melting point and cooled quickly this is known as __________________
Vitrification
White Ceramics such as plates and Bake ware
Whiteware
An ____________________ (sand, gravel or slag) is used as a reinforcement material.
aggregate
A finely pulverized material consisting principally of compaounds of lime, silica, alumina and iron is _____________?
cement
In Stage 1 of cement hydration, rapid heat occurs for 15 minutes this is called ____________, takes 2 hours
set
