Cemento Fondu

General characteristics
• A rapid hardening cement allowing concrete to be put into service between
6 and 24 hours after placing
• Excellent resistance to chemical attack
• Ideal for high temperature applications
• Used as a Portland cement accelerator in non-structural applications
• Particularly suited to areas subject to abrasion
Typical Properties
Ciment Fondu Lafarge is a cementbased on calcium aluminates, rather than calcium silicates which are the basis of Portland cement. This difference gives Ciment Fondu Lafarge properties ideally suited to specific applications which compliment the traditional uses of Portland cement.
Ciment Fondu Lafarge has a setting time similar to that of Portland cement, but is very rapid hardening. Concretes and mortars achieve a high earlystrength allowing fast stripping of formwork, and a return to service normally between 6 and 24 hours after placing.

Unlike Portland cement, Ciment Fondu Lafarge does not release free lime during hydration. This means that concretes with low porosities have an excellent resistance to chemical attack, from a wide range of aggressive substances.
Furthermore Ciment Fondu Lafarge is ideally suited forheat resistant and refractory concretes.
Concretes and mortars based upon Ciment Fondu Lafarge, having high mechanical performance and low porosity, are particularly suited to those applications where the concrete is subject to abrasion. For example; industrial floors, flume linings, spillways, etc.

Ciment Fondu Lafarge is an accelerator for Portland cement. Applications include renders,screeds and grouting materials. Ciment Fondu Lafarge/Portland cement mixes should not be used for structural concrete.
Specification
The properties of Ciment Fondu Lafarge conform to the standards of the country in which it is manufactured.

• French norm: NF P 15-315 - April 1991 Hydraulic binder; Melted Aluminous Cement - France.
• British Standards Institution: BS 915: Part 2
1972 - UnitedKingdom.
The specification limits indicated are determined with an acceptable quality level (AQL) of 2.5% in
accordance with the sampling standard ISO 3951. The strict specification limits define the absolute limit of product conformity. The usual range represents typical values of our production.

CIMENT FONDU LAFARGE®
Construction Applications
Commercial Data Sheet

ReferenceAN-GE-LAC-02/98
Main contituents (%)
Minor constituents (%)
The chemical characteristics of Ciment Fondu Lafarge have been determined according to the following :

• EN 196-2: Methods of testing cement – Chemical analysis of cement
• EN 196-21: Methods of testing cement -Measurement of the chloride, carbon dioxide and
alkali content of cement.
• Determined in accordance with EN 196-6: Methods oftesting cements - Measurement of fineness.
Workability
The flow test ASTM C230 has been chosen to evaluate the workability of Ciment Fondu Lafarge. The test is carried out using a standard siliceous sand mortar.

• Composition of mortar according to NF P15-315 (except water/cement ratio): Cement/Sand
ratio = 1/2.7; water/cement ratio 0.45.

• Preparation according to EN196-1.
• Test carried outwith 25 shocks after 15 mins retained in cone mould, d1 (diameter of
base)=100mm.

• Spread(%) = d2 (mm) - d1(mm).

Mortar setting time
1 Chemical analysis
Al2O3
CaO
SiO2
Fe2O3 + FeO3
MgO
TiO2
Usual range
37,5 - 41,5
36,5 - 39,5
2,5 - 5,0
14,0 - 18,0
-
-
Specification limit
> 37,0
< 41,0
< 6,0
< 18,5
< 1,5
< 4,0
S ( as sulphide ions )
Cl ( as chlorideions )
Na2O + 0,659 K2O
Strict specification limit
< 0,1
< 0,1
< 0,4

2 Finesse
Specific Surface
Blaine (cm2/g)
Usual range
2850 - 3450
Specification limit
> 2700
Spread after 15 mins (%)
Specification limit
> 30
Hydraulic properties – French production in accordance with the standard NF P 15-315
3
Initial set (minutes)
Final set (minutes)
Usual range
130 -...