Availability
of blended cements
Ecological and economical reasons initiated
a change in the development of different types of cement throughout
Europe. CEM I cements are being increasingly replaced by CEM II
cements which contain other main constituents in addition to clinker.
Figure 1 gives a survey of the European cement sales for
the year 2003 according to CEMBUREAU statistics. Portland cement
continues to play the dominant role in the 52,5 strength class,
but in the 32,5 and 42,5 cement strength classes there have been
substantial moves towards CEM II cements. Overall the amount of
Portland cement in the CEMBUREAU countries in the year 2003 represent
32 %, whereas the amount of cements with several main constituents
was about 64 % (Figure 1A). In the strength class 32,5 the
amount of Portland cement in the CEMBUREAU countries in the year
2003 represent only 10 %, whereas the amount of cements with several
main constituents was about 90 % (Figure 1B). Unspecified
cements are not shown in the figures.
A
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B
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C
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Figure 1: Domestic market share
of cement in CEMBUREAU countries in % (2003) - Source: CEMBUREAU
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A: Reference to all strength classes
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B: Reference to strength class 32,5
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C: Reference to CEM II of the strength
class 32,5
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Portland limestone cements are most frequently
used as Portland-composite cement CEM II, followed in second place
by Portland-composite cements CEM II-M with more than two main constituents
(Figure 1C). CEM II-M cements have shown the greatest increase
in recent years.
However there are partly considerable differences regarding cement
types in various European countries. Besides regional selling conditions
this also has to be attributed to restrictions in view of the application
of some of the Portland-composite cements and blended cements respectively.
Following examples are given in comparison to the pan-European situation:
Data for the different European countries
will be compiled during the course of the network.
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