|
gptkbp:instanceOf
|
gptkb:cement
|
|
gptkbp:alternativeTo
|
gptkb:natural_cement
|
|
gptkbp:color
|
gray
white
|
|
gptkbp:component
|
gptkb:marble
concrete
stucco
grout
|
|
gptkbp:compressiveStrength
|
high
|
|
gptkbp:contains
|
aluminates
calcium silicates
ferrites
|
|
gptkbp:developedBy
|
gptkb:Joseph_Aspdin
|
|
gptkbp:environmentalImpact
|
CO2 emissions
|
|
gptkbp:mainIngredient
|
gypsum
clinker
|
|
gptkbp:namedAfter
|
Portland stone
|
|
gptkbp:patent
|
1824
|
|
gptkbp:practicedWorldwide
|
true
|
|
gptkbp:producedBy
|
calcination of limestone and clay
|
|
gptkbp:riskFactor
|
alkaline
can cause skin irritation
|
|
gptkbp:setInPeriod
|
final: 10 hours (typical)
initial: 45 minutes (typical)
|
|
gptkbp:standardizedBy
|
gptkb:ASTM_International
gptkb:EN_197-1
|
|
gptkbp:type
|
hydraulic
|
|
gptkbp:usedFor
|
construction
concrete production
mortar production
|
|
gptkbp:usedIn
|
gptkb:water
bridges
dams
reinforced concrete
roads
tunnels
buildings
foundations
plaster
marine structures
precast concrete
airport runways
industrial floors
masonry units
pavements
render
tile grout
|
|
gptkbp:bfsParent
|
gptkb:East_African_Portland_Cement_Company
gptkb:Rosendale_cement
gptkb:Semen_Andalas
gptkb:Semen_Bima
gptkb:Semen_Merah_Putih
|
|
gptkbp:bfsLayer
|
6
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Portland cement
|