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VDZ Congress 2002, Dsseldorf 23 27 Sep. 2002

Investments, raw materials and nature conservation:

sustainable development in the cement industry

Michael Basten

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Investments, raw materials and nature conservation:

sustainable development in the cement industry

Summary

For example, as survey covering all integrated

cement works in Germany shows that nature

conservation is the subsequent use to whichapprox. 55 % of all former extraction sites are put.

Their previous use, in contrast, was dominated by

intensive agriculture. Further projects pursued by

the commission pertain to biodiversity of species

and nature conservation management in quarries

as well as the geology of the raw materials incement and their potential for substitution.

The base of facts thus established constitutes an

important element of the initiative for sustainability

of the German cement industry and the Trade

Unions for Building-Agriculture-Environment and forMining, Chemical and Energy.

The model of sustainable development, which is

increasingly dominating discussions in social

politics, is interpreted as the cross-generationalbalancing of ecological, social and economic needs.

In view of the complex challenges, settling purported

clashes of interests appears to be the obvious thing

to do first. This also applies to the relationship

between investment security, the extraction of raw

materials and nature conservation.

The paper deals with corresponding projects

attended by the raw material commission of the

Federal German Association of the Cement Industry

and the German Cement Works Association. The

results confirm that the reconciliation of the interests

of economy and ecology is not just possible, but is

already implemented frequently.

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Figure 1: Raw materials and cement plants in Germany

Lbeck

SH

MV

NI

ST

SN

BB

HH

HB

BE

Rostock

Bremen

LeimenLauffen

Eisenhtten-stadt

Rders-dorf

Karsdorf

100 km

Bernburg

Hver

AhlenNeubeckum Beckum

Lgerdorf

ErwitteDortmund Geseke

Stenich

xheim

GllheimMannheim

Amne-burg

Duisburg

Neuss

Kiefersfelden

Rohrdorf

Deuna

Ws

singen

Geisingen

Dottern-hausen

Harburg

Burg-lengenfeld

Solnhofen

Lengfurt

Hartmannshof

Cement plant withoutclinker production

Cement plant withclinker production

HannoverLengerich

EnnigerlohPader-born

Hardegsen

Neuwied

Kruft

WeisenauKarlstadt

AllmendingenSchelklingen

Mergelstetten

Dorndorf

Berlin

THHENW

SLRP

BW BY

Cretaceous

Tertiary

Jurassic

Devonianmassive limestone

Triassic / Muschelkalk

KnigsWusterhausen

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Figure 2: Substitution in 2000

Input material TrendProduction stage Proportion

Clinker production

Cement grinding

Natural raw materials

Secondary raw materials / ash

Alternative fuels

Raw materials

Fuels

Fossil fuels

95 %

5 %

23 %

79 %

17 %

77 %

75 %

25 %

Cement clinker

other

Industrial calcium sulphates

Main constituents

Calcium sulphates

Gypsum / anhydrite

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Figure 3: Land use after extraction (in %)

Nature conservation

Forestry

Agriculture

Landfill

Industry

Other

Recreation / leisure

0 10 20 30 40 50 60

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Figure 4: Land use before extraction (in %)

Tillage Forestry Grassland Other

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Figure 5: Working quarries and protection areas

Protection areaswithin quarries

Protection areasadjacent to quarries

Number

Nature protection area

Landscape conservation area

Water protection area

Other

0 455 10 15 20 25 30 35 40

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Figure 6: Management Tools for Nature Conservation