ﻫﻴﺌﺔ :ﺍﻝﻌﺭﺒﻴﺔﺍﻝﺘﻘﻴﻴﺱ ﻝﺩﻭل ﻤﺠﻠﺱ ﺍﻝﺘﻌﺎﻭﻥ ﻝﺩﻭل ﺍﻝﺨﻠﻴﺞ   
 GCC STANDARDIZATION ORGANIZATION (GSO) 
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GSO 1914/2009 (E) 
 
 
 
 
 ﺍﻷﺴﻤﻨﺕ ﺍﻝﺒﻭﺭﺘﻼﻨﺩﻱ
Portland Cement  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ICS : :91.100.00  ::
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Portland Cement 
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Date of GSO Technical Council  : 14516/2/1430h  (10512/2/2009)  
Issuing Status :  Standard::
:GSO STANDARD                                                                       GSO 1914/2009 
1:Table of Contents 
 
This:standard:contains:the:following:items::
:
Page Items 
2: ::Foreword …………………………………………………….…… :
3:: 15:Scope :………………………………………………………….….:
3: 25:Complementary:Reference …………………………… ………….…..:
3: 35:Composition:and:Way:of:Manufacture ………………………..…....….:
4: 45:Requirements:and:Acceptance:Rules ……………………….…..…..… :
4: 4.1::Chemical:Composition…………………………………… ....…… ..:
4:: ::::::::::::4.2::Physical:Composition…………………………………… ………… :
4:: 55:Sampling………………… ……………………………………………… : ….. :
5:: 65:Tests………………………………………………………………….............: :
5: 75:Conditions:of:Supply …………………………………………….….:
12 : Attachment:no.:1…………………………………………………………… ..…:
15 :: References………………………………………………………………….….. :
 GSO STANDARD                                                                       GSO 1914/2009 
2:Foreword 
:
GCC: Standardization: Organization: (GSO): is: a: regiona l: Organization: which: consists: of: the: 
National:Standards:Bodies:of:GCC:member:States.:One :of:GSO:main:functions:is:to:issue: 
Gulf:Standards:/Technical:regulations:through:speci alized:technical:committees:(TCs).:
GSO: through: the: technical: program: of: committee: TC: N o: (6): "Technical: Committee: of: 
Building: Materials: Standards": has: prepared: this: Sta ndard.: The: Draft: Standard: has: been: 
prepared:by:State:of:Kuwait:.::
The:draft:Standard:has:been:prepared:based:on:relev ant:ADMO,:International:and:National: 
foreign:Standards:and:references.:
This:standard:has:been:approved:as:a:Gulf:Standard: by:GSO:Technical:Council:in:its:meeting: 
No.(15),:held:on:14516/2/1430h:(10512/2/2009):.:
:
:GSO STANDARD                                                                       GSO 1914/2009 
3:Portland Cement 
 
1  SCOPE 
: This:GSO:standard:is:concerned:with:the:following: eight:types:of:Portland:cement::
1. : Type: I: cement: (ordinary): 5: for: use: when: the: specia l: properties: specified: for: any: 
other:type:are:not:required.:
2. : Type:IA:–:Air5entraining:cement:for:the:same:uses: as:type:I,:where:air5entrainment: 
is:desired.:
3. : Type: II: cement: 5: For: general: purposes,: more: especi ally: when: moderate: sulphate: 
resistance:or:moderate:heat:of:hydration:is:desired .:
4. : Type: IIA: –: Air5entraining: cement: for: the: same: uses : as: type: II,: where: air5
entrainment:is:desired.:
5. : Type:III:–:For:use:when:high:early:strength:is:des ired.:
6. : Type: IIIA: –: Air5entraining: cement: for: the: same: use : as: type: III,: where: air5
entrainment:is:desired.:
7. : Type:IV:–:For:use:when:a:low:heat:of:hydration:is: desired.:
8. : Type:V:–:For:use:when:high:sulphate:resistance:is: desired.:
: Common: cements: are: grouped: in: the: European: standar d: EN: 19751:2000: into: (5): 
major:types:according:to:composition.:Further:they: are:further:divided:into:(2):major: 
classes:according:to:pressure:resistance:as:stipula ted:in:tables:(1):and:(2):referred:to: 
in:Attachment:(1).:
2  COMPLEMENTARY REFERENCES 
2.1 : GSO:Standard:938:''Test:Methods:for:Chemical:Prope rties:of:Portland:Cement:''  
2.2 : GSO:Standard:1915:":Test:Methods:for:Physical:Prop erties:of:Portland:Cement:''.:  
3  COMPOSITION AND MANUFACTURING 
3.1  Portland Cement: A: hydraulic: cement: produced: by: pulverizing: (grindin g): 
Portland5cement: clinker,: that: mainly: contains: calci um: silica: and: which: often: 
contains:calcium:sulphate:in:form:of:ground:additiv es.  
3.2  Air-entraining cement: Hydraulic: cement: containing: air5entraining: addition : in: 
such:amount:as:to:cause:air:to:be:entrained:in:mort ar:within:specified:limits:when: 
measured:by:prescribed:method.  
 
 
 
Cement:can:be:classified:according:to:European:stan dards:EN:19751:2000:to:the:five:main:types:of:insta llation: 
and:then:classified:according:to:the:two:main:Compo nent:(N:&:R):and:by:resistance:to:pressure:(32.5:an d:42.5:
and:52.5:MPa),:as:indicated:in:Tables:1,:2:mentione d:in:the:annex:(1)  
 GSO STANDARD                                                                       GSO 1914/2009 
4:3.3  Composition: The: cement: covered: in: this: standard: should: contain: no: additions: 
except:as:follows:  
 
3.3.1 : Portland:Cement:Clinker  
 
3.3.2 : Water:or:calcium:sulphate:or:both,:if:added,:shall :be:in:amounts:such:that:the:limits: 
shown:in:Table:(1):for:sulphur:trioxide:and:loss:on :ignition:are:not:exceeded.  
 
3.3.3 : Cement: having: limestone: content: up: to: 5%: by: weight : is: allowed,: provided: it: 
conforms:to:the:physical:and:chemical:requirements: of:this:standard:(refer:to:note: 
1).:The:limestone:used:shall:be:natural:and:contain ing:at:least:70%:by:weight:of:the: 
mineral:compounds:of:calcium:carbonate.:
 
3.3.4 : Using: additions: during: manufacturing: shall: comply: with: the: requirements: of: 
relevant:approved:standard:as:regarding:the:appropr iate:quantity:*.  
:
3.3.5 : Air5entraining: Portland: cement: shall: contain: groun d: additives: conforming: to: the: 
requirements:of:relevant:approved:standard:**.  
:
  Note (1):  This standard allows the addition of 5% by weight of grinded natural limestone to the final 
cement product but does not necessarily require the  addition of this limestone to the cement. As 
such, cement not containing grinded limestone can b e specified in the purchase order or supply 
contract .:
:
4  REQUIREMENTS AND RULES OF ACCEPTANCE 
 
4.1  Chemical Composition: Portland:cement:of:each:of:the:eight:types:shown:in : 
Section:(1):shall:conform:to:the:respective:standar d:chemical:requirements: 
prescribed:in:Table:(1).:In:addition,:optional:chem ical:requirements:are:shown:in: 
table:(2).  
 
4.2  Physical Properties: Portland:cement:of:each:of:the:eight:types:shown:in :Section: 
(1):shall:conform:to:the:respective:standard:physic al:requirements:prescribed:in: 
Table:(3).:In:addition,:optional:physical:requireme nts:are:shown:in:Table:(4).  
 
5  SAMPLING 
: When: the: purchaser: desires: that: the: cement: be: samp led: and: tested: to: verify: 
compliance: with: this: specification,: he: must: follow: the: relevant: approved: 
Standard.***:
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*::::::: American:Standard:ASTM:C465:
**::::: American:Standard:ASTM:C226:
***:: ASTM:C183:is:not:designed:for:manufacturing:qu ality:control:and:is:not:required:for:manufacturer’ s: 
certification.:GSO STANDARD                                                                       GSO 1914/2009 
5: 
6  TESTS 
::
6.1 : Chemical:properties:shall:be:tested:according:to:t he:requirements :of:GSO:
standard:938 :on :''Test :Methods:for :Chemical :Properties :of:Portland :Cement''.  
:
6.2 : Physical: properties: shall: be: tested: according: to: t he: requirements: of: GSO:
standard: 1915: on: ''Test: Methods: for: Physical: Proper ties: of: Portland: 
Cement''.  
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7  CONDITIONS OF SUPPLY 
:
: The: supplier: shall: make: sure: that: the: Portland: cem ent,: when: delivered: to: the: 
purchaser,: conforms: to: the: applicable: requirements: of: this: specification.: When: 
required,: the: supplier: shall: provide: the: purchaser: or: his: representative: with: a: 
certificate:stating:the:conformity:of:the:Portland: cement.:In:case:the:cement:sample: 
drawn:from:the:consignment:(according:to:the:method s:stipulated:in:this:standard): 
proves: to: be: non5conforming: to: the: afore5mentioned: requirements: of: testing: and: 
analysis,:the:consignment:shall:be:regarded:as:non5 conforming:to:this:standard.:
:
 Note (2):  When inter-comparing the results of oxides and the ir compounds analysis made by 
different bodies at different times, these results should not approved under the same bases. The 
results obtained according to the requirements of t he standard on ''moistened chemical analysis'', 
phosphate and titanium may be found in form of alum inates unless the necessary correction is made. 
However, the results obtained by speedy equipment d o not need such correction. This, in turn, leads 
to a slight difference in the calculated values of compounds. This difference is often within the 
required precision limits when the two methods are adopted. 
:
 Note (3):  When cement is delivered in packages, the following  words shall be plainly marked on 
each package: 
:
1. Portland:cement:
2. Cement:type:
3. Name:of:manufacturer:and:his:trade:mark::
4. Pack:weight:
5. Date:of:manufacture:
:
: When: the: cement: is: the: air5entraining: type,: the: wo rds: ''air5entraining'': should: be: 
plainly: marked: on: each: package.: Similar: information : shall: be: provided: 
accompanying: the: shipment: of: packaged: or: bulk: cemen t.: All: packs: should: be: in: 
good:condition:when:tested:and:inspected.:
:
: In:case:of:bulk:cement:trucks,:one:sample:is:drawn :from:each:truck:from:a:depth:of: 
15:cm:or:deeper:and:not:from:the:surface.:The:sampl e:to:be:tested:is:prepared:by: 
mixing: at: least: (3): drawn: samples: identical: in: weig ht: such: that: it: is: a: true: 
representation:of:the:truck:load.:
:
: The: former: items: 1,: 2,: 3,: 4: &: 5: should: be: mentione d: in: the: certificate: that: 
accompanies:each:consignment.:
:
 Note (4): Comparison test results may be taken from the quali fications tests that the manufacturer 
had conducted during the formation of the cement fr om limestone .:GSO STANDARD                                                                       GSO 1914/2009 
6: Note (5):  In case it is desired to change the measuring unit s to SI units, it is preferable that a whole 
package of it be set specifically for Portland Ceme nt. In measurement, it is possible to make a 
package for equating a weight of 42 kgs with 92.5 l bs, as the case is in equating 94 lbs. with 42.6 
kgs. in the traditional conversion package. 
 
 Note (6):  The guideline related to the preparation of the fa ctory report is available in ASTM C150-
07, attachment 4.  
 
Table 1 – Chemical Composition Requirements 
:
 Cement Type  
 I & IA II & 
IIA III & 
IIIA IV V Remarks 
Aluminium:oxide:(Al 2O3):max.:%:55555: 6.0: 55555: 55555: 55555: :
Ferric:oxide:(Fe 2O3):max.:%: 55555: 6.0:B,C:55555: 6.5: 55555: :
Magnesium:oxide:(MgO):max.:%: 5.0: 5.0: 5.0: 5.0: 5.0: :
Sulphur:trioxide:(SO 3):Dmax.:%::::
when:(C 3A) E:≤:8%:
when:(C 3A) E:>:8%::
3.0:
3.5::
3.0:
F::
3.5:
4.5::
2.3:
F::
2.3:
F::
Loss:on:ignition:max.:%: 3.0: 3.0: 3.0: 2.5: 3.0: :
Insoluble:residue:max.:%: 1.5: 1.5: 1.5: 1.5: 1.5: :
Tricalcium:silicate:(C 3S) :E :max.:% :55555: 55555: 55555: 35 B:55555: :
Dicalcium:silicate:(C 2S) :E :min.:% :55555: 55555: 55555: 40 B:55555: :
Tricalcium:aluminate:(C 3A) E:max.:% :55555: 8: 15: 7B:5C::
Sum:of:(C 3S:+:4.75C 3A):max.:%: : 100 H:: : : :
Tetracalcium:Aluminoferrite:+:twice: 
Tricalcium:Aluminate:
(C 4AF:+:2C 3A):or:the:solid:solution:+: 
(:C 4AF+:C 2F):as:applicable,:max.:%::
:
55555:
::
:
55555::
:
55555:
::
:
55555::
:
25 C::
Equivalent:alkalines:(Na 2O:+: 
0.658K 2O):max.:%: :55555 :0.60 G: 0.60 G: 0.60 G: 55555: :
 
:
B:  Doe:not:apply:when:the:heat:of:hydration:limit:in:t able:(4):is:specified:
:
C:  Dose:not:apply:when:the:Sulphate:resistance:limit:i n:table:(4):is:specified:
:
D: There:are:cases:where:optimum:of:sulphur:trioxide:S O 3:according:to:relevant:approved: 
standards:are:close:to:or:exceed:the:limits:of:this :standard:for:special:types:of:cement.:In: 
such:cases,:the:cement:properties:can:be:improved:b y:exceeding:the:maximum:limits:of: 
sulphur:trioxide:shown:in:this:table.:Exceeding:the se:limits:is:permitted:provided:that:the: 
cement:containing:a:high:limit:of:SO 3,:would:not:lead:to:the:increase:in:water:expansion : 
by: more: than: 0.02%: on: the: 14 th : day: according: to: relevant: approved: standards.: On: GSO STANDARD                                                                       GSO 1914/2009 
7:supplying: cement: having: such: property,: the: seller: s hould: provide: the: buyer: with: the: 
information:of:this:type:of:cement.:
 
E:  Refer:to:calculations:in:ASTM:C150507,:attachment:A 1.:
 
F:  Not:applicable.:
:
G: :Refer:to:note:(8).:
 
H: The:heat:of:hydration:test:should:be:run:for:at:lea st:(7):days:once:every:(6):months.:Such: 
test:shall:not:be:used:for:acceptance:or:rejection: of:the:cement.:However,:the:results:should: 
be:reported:for:information:purposes.:
:
I: These:limits:shall:be:applied:if:the:aggregate:used :is:reactive:with:the:cement.:It:should:be: 
referred:to:the:standard:on:the:aggregate: (ASTM:C33) .:
:
Note (7): The limits allowed for the sum of (C 3S + 4.75C 3A) in table (1) determines the heat of hydration 
temperature of the cement contained in the test met hod (ASTM C186) for heat of hydration for  (7) days  at 
the rate of 335 kJoul/kg (80 Calorie/gm). 
Table 2: Optional Chemical Composition RequirementsA 
:
: Cement Type 
 I & IA II & IIA III & IIIA  IV V Remarks :
Tricalcium:aluminate: 
(C 3A) B,:max.:%: 555: 555: 8: 555: 555:For:moderate: 
sulphate: 
resistance:cement:
Tricalcium:aluminate: 
(C 3A) B,:max.:%:555: 555: 5: 555: 555:For:high:sulphate: 
resistance:cement:
Equivalent:alkalines: 
(Na 2O:+:0.658K 2O): 
max.:%: :0.60: 555: 555: 555: 0.60::
:
:
A: :These:optional:requirements:apply:only:when:specif ically:requested.:Verify:availability: 
before:ordering.::
B: :Refer:to:calculation:method:in:(ASTM:C150507,:atta chment:A1):
:
Calculation Method: :
:
15:When:expressing:phases,:C=CaO,:: S=SiO 2,: A=Al 2O3,: F=Fe 2O3:
For:example,:Tricalcium:silicate:is:expressed:as:fo llows:::C 3A=3CaO.Al 2O3:
:
Titanium:dioxide:and:phosphorus:pentoxide:(TiO 2:and:P 2O5):shall:not:be:included:with:the: 
Al 2O3:content.:
:
25:When:the:ratio:of:percentages:of:aluminium:oxide :to:ferric:oxide:is:0.64:or:more,:the: 
percentages:shall:be:calculated:from:the:chemical:a nalysis:as:follows::
:GSO STANDARD                                                                       GSO 1914/2009 
8:Tricalcium:silicate::(C 3S):=:(4.071:x:%CaO):–:(7.600:x:%SiO 2):–:(6.718:x:%Al 2O3):–:(1.430:
x:%Fe 2O3):–:(2.852:x:%SO 3)::
:
Dicalcium:aluminate::
(C 2S):=:(2.867:x:%SiO 2):–:(0.7544:x:%C 3S):
:
Tricalcium:aluminate::
(C 3A):=:(2.650:x:%Al 2O3):–:(1.692:x:%Fe 2O3):
:
Tricalcium:Aluminoferrite::
(C 4AF):=:3.043:x:%Fe 2O3:
:
35:When:the:alumina5ferric:oxide:ratio:is:less:than :0.64,:a:calcium:Aluminoferrite:solution: 
(expressed:as:(C 4AF:+:C 2F)):is:formed.:In:this:case,:no:tricalcium:aluminat e:will:be: 
present:in:cements:of:this:composition.:Dicalcium:s ilicate:shall:be:calculated:as:previously: 
shown:in:note:(1).:Contents:of:this:solid:solution: and:of:tricalcium:silicate:shall:be: 
calculated:as:follows::
:
(C 4AF:+:C 2F):=:(2.100:x:%Al 2O3):+:(1.702:x:%Fe 2O3):
:
Tricalcium:silicate::
(C 3S):=:(4.071:x:%CaO):–:(7.600:x:%SiO 2):–:(4.479:x:%Al 2O3): C::–:(2.859:x:Fe 2O3):–:(2.852:
x:%SO 3)::
:
45:In:case:limestone:is:added:to:the:cement,:the:co ntent:of:carbon:dioxide:shall:be:taken:into: 
consideration:when:calculating:the:tricalcium:silic ate:content:(C 3S).:(see:note:1:and:note:3).: 
However,:if:limestone:is:not:added:to:the:cement,:t he:value:of:carbon:dioxide:is:considered: 
within:the:calculation:of:tricalcium:silicate,:and: the:formula:for:(C 3S):becomes:as:follows::
:
i5:Case:of:addition:of:limestone:to:cement:in:note: (1)::
:
Tricalcium:silicate::
:
(C 3S):=:(4.071:x:%CaO):–:(7.600:x:%SiO 2):5:(6.718:x:%Al 2O3):5:(1.430:x:Fe 2O3):
5:(2.852:x:%SO 3):
:
ii5:Case:of:addition:of:limestone:to:cement:in:note :(3)::
:
Tricalcium:silicate::
:
(C 3S):=:(4.071:x:%CaO):–:(7.600:x:%SiO 2):5:(4.479:x:%Al 2O3):5:(2.859:x:Fe 2O3):
5:(2.852:x:%SO 3):
:
Whenever:limestone:is:added:to:the:cement,:the:supp lier:must:provide:the:testing:body:with: 
information:on:the:percent:of:limestone:added,:and, :accordingly,:the:testing:body:would:test: 
the:carbon:dioxide.:GSO STANDARD                                                                       GSO 1914/2009 
9: 
 
A:  :Cement Type  
 I IA II IIA III IIIA IV V 
Air:content:in:mortar B:
volume,:max.:%:
min.:%::
12:
5555::
22:
16::
12:
5555::
22:
16::
12:
5555::
22:
16::
12:
5555::
12:
5555:
Fineness C,:specific:surface,:m 2/kg: 
(alternative:methods):
15:Turbidimeter:test:
/square4 Average:value,:min. D:
/square4 For:one:sample,:min. E:
/square4 Average:value,:max. D:
/square4 For:one:sample,:max. E::
25:Air:permeability:test:
/square4 Average:value,:min. D:
/square4 For:one:sample,:min. E:
/square4 Average:value,:max. D:
/square4 For:one:sample,:max. E::
:
:
160:
150:
555:
555:
:
280:
260:
555:
555::
:
:
160:
150:
555:
555:
:
280:
260:
555:
555::
:
:
160:
150:
240 F:
240 F:
:
280:
260:
420 F:
430 F::
:
:
160:
150:
240 F:
240 F:
:
280:
260:
420 F:
430 :F ::
:
:
555:
555:
555:
555:
:
555:
555:
555:
555::
:
:
555:
555:
555:
555:
:
555:
555:
555:
555::
:
:
160:
150:
240:
245:
:
280:
260:
420:
430::
:
:
160:
150:
555:
555:
:
280:
260:
555:
555:
Autoclave:expansion,::max.:%: 0.80: 0.80: 0.80: 0.80: 0. 80: 0.80: 0.80: 0.80:
Compressive:strength,:not:less: 
than:the:value:shown:for:the:ages: 
indicated:as:follows: G: :::
MPa:(psi):–::1:day::
:
555::
:
555:
::
:
555::
:
555::
:
12:
(1740)::
:
10:
(1450)::
:
555::
:
555:
:
: 3:days:12:
(1740):10:
(1450):10:
(1450):
7.0 H:
1020 H:8:
(1160):
6.0 H:
870H:24:
(3480):19:
(2760):5555:
:8:
(1160):
:
:
: 7:days: 19:
(2760):16:
(2320):17:
(2470):
12 H:
(1740)H:14:
(2030):
9H:
(1310)H:555: 555: 7:
(1020):15:
(2180):
: 28:days: 28:
(4060):22:
(3190):28:
(4060):
22 I:
(3190)I:22:
(3190):
18 I:
(2610)I:555: 555: 17:
(2470):21:
(3050):
Setting:time,:Vicat:test: J:
/square4 Initial:setting:time,:min.:
/square4 Final:setting:time,:max.::
45:
375::
45:
375::
45:
375::
45:
375::
45:
375::
45:
375::
45:
375::
45:
375:Table (3) Standard Physical Requirements 
:GSO STANDARD                                                                       GSO 1914/2009 
10:B: Compliance: with: the: requirements: of: this: standard: d oes: not: necessarily: ensure: that: the: 
desired:air:content:will:be:obtained:in:concrete.:
:
C: The:testing:laboratory:shall:select:the:fineness:me thod:to:be:used.:When:the:sample:fails: 
to:meet:the:requirements:of:air:permeability:test,: the:turbidimeter:test:should:be:used,:and: 
the:requirements:in:this:table:for:the:turbidimeter ic:method:shall:govern.:
:
D: :The:average:value:is:determined:from:the:test:resu lts:of:the:last:(5):successive:samples: 
from:a:certain:source.:
:
E: ::The:test:result:of:a:sample:should:be:the:test:re sult:of:one:or:several:test:for:this:sample.:
:
F: ::The:maximum:average:value:and:the:maximum:value:f or:one:sample:do:not:apply:when: 
the:sum::of:(C 3S:+:4.75C 3A):is:less:or:equal:to:90.:
 
G: :The:strength:at:any:specified:test:age:shall:not:b e:less:than:that:attained:at:any:previous: 
specific:test:age.:
 
H: When:the:optional:heat:of:hydration:limit:listed:in :Table:(4):is:specified.:
:
I: : The:allowable:limits:for:the:sum:(C 3S:+:4.75C 3A):listed:in:Table:(1):does:not:apply:when: 
these: requirements: are: specified.: These: strength: re quirements: apply: when: the: optional: 
heat:of:hydration:requirements:are:requested.::
:
J: : The:setting:time:mentioned:here:is:the:initial:set ting:time:of:the:testing:method:specified: 
in:GSO:Standard:1915:on:“Test:Methods:for:Physical: Properties:of:Portland:Cement”.:
Table (4) - Optional Physical Requirements 
 
Cement Type A 
: I IA II IIA III IIIA IV V 
False:setting,::
final:penetration,:min.:%::
50::
50::
50::
50::
50::
50::
50::
50:
Heat:of:hydration::max.:
7:days,:max,:kJ/kg:(cal/:g):
:
28:days,:max,:kJ/kg:(cal/:g)::
5555:
:
5555::
5555:
:
5555::
290:
(70)B::
5555:
::
290:
(70)B::
5555:
::
5555:
:
5555::
5555:
:
5555::
250:
(60)C::
290:
(70)C::
5555:
:
5555:
Sulphates:resistance: D,:14:days:
max,:expansion:%::::
5555::
5555::
5555 E::
5555 E::
5555::
5555::
5555::
0.040:
Gilmore:test::
Initial:setting:time,:minute,:min:
Final:setting:time,:minute,:max::
60:
600::
60:
600::
60:
600::
60:
600::
60:
600::
60:
600::
60:
600::
60:
600:
 
 
 
 GSO STANDARD                                                                       GSO 1914/2009 
11:A: :These: optional: requirements: apply: only: when: specif ically: requested.: Verify: availability: 
before:ordering.:  
 
B: :The: allowable: limit: for: the: sum: of: (C3S:+:4.75C3A) :in:table:(1):does:not:apply:when: 
these: optional: requirements: are: specified.: These: st rength: requirements: apply: when: the: 
optional:heat:of:hydration:requirements:are:request ed.:
 
C: :When:the:heat:of:hydration:limit:is:specified,:it: shall:be:instead:of:the:limits:of:C 3S,:C 2S,: 
C3A,:SiO 2:&:Fe 2O3:.:
 
D: :When: sulphate: resistance: is: specified,: it: shall: be : instead: of: the: limits: of: C 3A,: C 4AF: +: 
2C3A,:SiO 2:&:Fe 2O3:.:
 
E: :Cement:meeting:the:requirements:of:high:sulphate:r esistance:limit:for:Type:V:is:deemed: 
to:meet:the:moderate:sulphate:resistance:requiremen t:of:type:II.:GSO STANDARD                                                                       GSO 1914/2009 
12:Attachment (1) 
 
:
In: accordance: with: the: European: Standard: EN: 19751,: the: family: of: common: cements: has: 
been:grouped:into:five:main:types:as:follows::
:
1)::CEM:I: Portland:cement:
:
2)::CEM:II: Portland5composite:cement:
:
3)::CEM:III: Blast:furnace:cement:
:
4)::CEM:IV: Pozzolanic:cement:
:
5)::CEM:V: Composite:cement:
:
The:above:(5):groups:are:divided:into:27:products,: the:composition:of:which:is:shown:in:table: 
1.: In: case: the: cement: contains: other: major: constitu ents,: they: should: be: indicated: in: the: 
designation:notation.:
:
Moreover,: cement: has: been: divided: into: (2): major: cl asses: according: to: its: compressive: 
strength:(see:Table:2)::
5 Class:N::cement:with:ordinary:early:strength,:and::
5 Class:R::cement:with:high:early:strength:
:
EXAMPLE:1::Portland:cement:conforming:to:EN:19751:w ith:a:high:early:strength:of:42.5:
MPa:is:identified:by:CEM:I:42.5:R:
:
EXAMPLE: 2:: Portland5composite: cement: containing: mor e: than: 80%: clinker: would: be: 
designated:according:to:table:1:as:CEM:II/A5M,:and, :if:it:contains:a:considerable:percentage: 
of: blast: furnace: slag: (S),: siliceous: fly: ash: (V): an d: limestone: (L),: and: has: an: ‘early’: 
compressive:strength:of:32.5:MPa,:it:would:be:ident ified:by:[CEM:II/A5M:(S5V5L):32.5:N].:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
• The: Cement’s: Early: strength: is: its: compressive: stre ngth: which: is: evaluated: in: accordance: with: the: 
European:standard:(EN:19651):at:2:days:and:at:7:day s.:GSO STANDARD                                                                       GSO 1914/2009 
13:Table 1 – The 27 products in the family of common c ements 
 
Composition [percentage by mass] 
Main constituents 
Clinker  Blast-  
furnace 
slag Silica  
fume Pozzolana Fly ash Burnt 
shale Limestone 
   natural  natural  
Calcined  siliceous  calca-
reous    Main 
Types Notation of the 27 
products (types of 
common cement) 
K S D P Q V W T L LL Minor 
additional 
constituents  
CEM:I:Portland:
Cement:CEM:I: 955100 :5: 5: 5: 5: 5: 5: 5: 5: 5: 055:
CEM:II/A5S: 80594: 6520: 5: 5: 5: 5: 5: 5: 5: 5: 055: Portland5:
Slag: 
cement: CEM:II/B5S: 65579: 21535: 5: 5: 5: 5: 5: 5: 5: 5: 055:
Portland5:
Silica:fume :
cement:CEM:II/A5D: 90594: 5: 6510: 5: 5: 5: 5: 5: 5: 5: 055:
CEM:II/A5P: 80594: 5: 5: 6520: 5: 5: 5: 5: 5: 5: 055:
CEM:II/B5P: 65579: 5: 5: 21535: 5: 5: 5: 5: 5: 5: 055:
CEM:II/A5Q: 80594: 5: 5: 5: 6520: 5: 5: 5: 5: 5: 055:Portland5:
Pozzolana:
cement:
CEM:II/B5Q: 65579: 5: 5: 5: 21535: 5: 5: 5: 5: 5: 055:
CEM:II/A5V: 80594: 5: 5: 5: 5: 6520: 5: 5: 5: 5: 055:
CEM:II/B5V: 65579: 5: 5: 5: 5: 21535: 5: 5: 5: 5: 055:
CEM:II/A5W: 80594: 5: 5: 5: 5: 5: 6520: 5: 5: 5: 055:Portland5:
Fly:ash: 
cement:
CEM:II/B5W: 65579: 5: 5: 5: 5: 5: 21535: 5: 5: 5: 055:
CEM:II/A5T: 80594: 5: 5: 5: 5: 5: 5: 6520: 5: 5: 055: Portland5:
Burnt:shale: 
cement: CEM:II/B5T: 65579: 5: 5: 5: 5: 5: 5: 21535: 5: 5: 055:
CEM:II/A5L: 80594: 5: 5: 5: 5: 5: 5: 5: 6520: 5: 055:
CEM:II/B5L: 65579: 5: 5: 5: 5: 5: 5: 5: 21535: 5: 055:
CEM:II/A5LL: 80594: 5: 5: 5: 5: 5: 5: 5: 5: 6520: 055:Portland5:
Limestone: 
cement:
CEM:II/B5LL: 65579: 5: 5: 5: 5: 5: 5: 5: 5: 21535: 055:
CEM:II/A5M: 80594: <555555555555555555555555555555555 55555565205555555555555555555555555555555555555>: 05 5:CEM:II:
Portland5:
Composite: 
cement: CEM:II/B5M: 65579: <555555555555555555555555555555555 55555215355555555555555555555555555555555555555>: 05 5:
CEM:III/A: 35564: 36565: 5: 5: 5: 5: 5: 5: 5: 5: 055:
CEM:III/B: 20534: 66580: 5: 5: 5: 5: 5: 5: 5: 5: 055: CEM:III :Blast5:
furnace: 
cement:
CEM:III/C: 5519: 81595: 5: 5: 5: 5: 5: 5: 5: 5: 055:
CEM:IV/A: 65589: 5: <555555555555555551153555555555555 5555555>: 5: 5: 5: 055:
CEM:IV :Pozzolanic :
Cement:CEM:IV/B: 45564: 5: <555555555555555553655555555555555 5555555>: 5: 5: 5: 055:
CEM:V/A: 40564: 18530: 5: <55555555518530555555555>: 5: 5 : 5: 5: 055:
CEM:V:Composite:
Cement:CEM:V/B: 20538: 31550: 5: <55555555553155055555555>: 5: 5 : 5: 5: 055:GSO STANDARD                                                                       GSO 1914/2009 
14:Table 2 – Mechanical and physical requirements 
 
Compressive strength 
MPa 
Early Strength Standard Strength Initial 
Setting 
Time Soundness 
(expansion)  Strength 
Class 
2 days 7 days 28 days min mm 
32.5:N: 5: ≥:16.0:
32.5:R: ≥:10.0: 5:≥:32.5: ≤:52.5: ≥:75:
42.5:N: ≥:10.0: 5:
42.5:R: ≥:20.0: 5:≥:42.5: ≤:62.5: ≥:60:
52.5:N: ≥:20.0: 5:
52.5:R: ≥:30.0: 5:≥:52.5: 5: ≥:45:≤:10:
:
:
: