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8/9/2019 Portland Cement, Calcium and Magnesium Compounds
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The Builders of Pillars
Portland Cements, Calcium and Magnesium Compounds
Kamyll Dawn Cocon
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Portland Cements
$utline | %uilders o&
Calcium Compounds
Magnesium Compounds
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Cement
Powder that hardenswhen reacted withwater
"ngredient o& concrete %ind the aggregates
into a roc' li'e mass
Concrete
Mi(ture o& aggregand paste
ses cement to )aggregates toget
Concrete *s+ Cement
n ro uc on u e140
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Formula Shorthand
Notation
Description Typical
Percentage
Mine
(CaO)3SiO!
CS
#ricalcium silicate
>?alite@A
0!0
yd
and stre
(CaO)!SiO!
C8S
Dicalcium silicate>?)elite@A
10!0
ydand
ter
(CaO)3"l!O3
C6
#ricalciumaluminate
>?aluminate@A
!1
ydinst
e(oCo
early
(CaO)#"l!O3Fe!O3
C465
#etracalcium
alumino&errite>?&errite@A
!1
yd6ct
m"mpa
Closer /oo'. Clin'ers
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Closer /oo'. ydration
DryCement
%y
C
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KilnDry Process
$et Process
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Closer /oo'. Dry Process Kiln
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Closer /oo'. et Process Kiln
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Clin'ering eactions
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i
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$et Process
Dry Proces Moisture content o& the slurry is
3''*
Moisture content o& the
Slurry enters into the +iln directlyat !,C
Meal enters preheaters'iln at 200GC
Dimensions o& the +iln needed to
manu&acture the cement is -igger
Dimensions o& the 'manu&acture the cemen
.ess e/cient heating process due
to sur&ace area o& slurry0
eating process is eHc*ery high sur&ace area
the siIe o& meal+ The amount o& the heat re1uiredis higher2 so the re1uired &uel
amount is higher
#he amount o& heat reso the reBuired &uel am
.ess economical More economical Original process adopted in early
times
sed in modern dayPortland cement manu&
Proides ideal mi4 &or +iln %lows raw mi( in 'iln o
e*iew. Dry *s+ et Process
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"STM C5'
Cement Type
Classi6cation "pplica
Type 7
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"ST9M C5'Cement Type
Clin+er Mineral Percent
CS C8S C6 C4
7 0!- 10!0 -!14 !77 4!- !0 8!7 10
777 !- !8 !18 !78 !4 87! !4 118 40!- 1!0 1! 10
#ypes o& Portland Cement
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%rie& istory. /ime
Disco*ery o&/ime
Caesar6ugustus
8 18 6+D
Marco Polio6rchitect
%rie& istory | /ime |
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%rie& istory | /ime |
Dugout Kiln
6merica
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Manu&acturing process
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5or high calciumlime.
CaC$L heat C$8L Ca$
5or dolomiticlime. CaC$,N MgC$,L heat 8C$8L Ca$N
Kiln reactions
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Ouic'lime
Classi;cation Description Com
igh Calcium Ouic'lime
igh Calcium Ouic'lime
ydrated /ime
Classi;cation Description Comigh Calcium ydrated
/imeDolomitic ydrated /ime
>normalADolomitic ydrated /ime
>pressureA
Deri*ed &rom limestone 0 F
4-
Produced rapidly &rom highcalcium Buic'lime
Calcium o(ide &raction hydratesunder
atmospheric hydrating conditions
8 8
!4 p1!1
Produced &rom dolomitic Buic'lime underpressure
resulting to hydration o& all Mg$ andCa$
40!48 82!0 p
8!8
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CaS$4N 88$
CaS$4N 88$ L heat CaS$4N Q 8$ L 1 Q
Plaster o& Paris:ypsum
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Manu&acturing process
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igh Speci;c Sur&ace igh ater Demand
igh Porosity /ow Mechanical Property
%eta Plaster Crystals
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/ow Speci;c Sur&ace /ower ater Demand
/ow Porosity igh Mechanical Property
6lpha Plaster Crystals
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Dry ProcessSteam *apour is inRectedduring calcination
et ProcessCalcination o& a gypsumslurry under pressure
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CaS$4N Q 8$ L 1 Q 8$ CaS$4N 88Plaster o& Paris :ypsum
ehydration
$utline | %uilders o&
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Portland Cements
Calcium Compounds
Magnesium Compounds
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$ne i& the most a)undant element in the eartcrust
9lement Percent o& total mass
O4ygen 42+8Silicon 8+
"luminum +07ron 4+1
Calcium +2Sodium 8+-Potassium 8+40Magnesium 1+2%ydrogen 0+7Titanium 0+7
Magnesium
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1717 3ohn Callen patented Magnesium ydro(ide sed &or alle*iation o& digesti*e disorders
1782
Sir 3ames Murray used his own uid magnesia &ormula to tro& "reland, MarBuis 6nglesey, o& stomach pain
6ppointed as resident physician and 'nighted
178 Charles enry Phillips &ormulated 7F wT* Sold under the )rand name Philips Mil' o& Magnesia
Magnesium ydro(ide
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Magnesium ydro(ide ses
6ntacid JeutraliIer
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Manu&acturing process
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Magnesium $(ide ses
all %oard%oo'
Preser*ationCa
Magnesium Chloride
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Production Process ses
g
Melting
5ood C
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EJD
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