12th EUROPEAN READY MIXED CONCRETE CONGRESS

1 2 th E U R O P E A N

LISBON 2 3 / 2 6 JUNE

Proceedings of the

12th EUROPEAN READY MIXED CONCRETE CONGRESS Volume 1 TECHMiSCHE

2 3 - 2 6 June 1998 LISBON - PORTUGAL

rr-'.ir-K

i

VII

TABLE OF CONTENTS Preface Committees Table of Contents

v vi vii

VOLUME 1 Session 1 - ERMCO IN ACTION Serving the Industry Francesco Biasioli (Italy)

3

The ERMCO Technical Committee Wolfgang Zaschke (Germany)

7

The ERMCO Environmental Committee Jim O'Brien (Ireland)

14

Liaison with EFCA Bayhass El-Jazairi (UK)

20

Survey on the European standards under preparation for concrete and special items and developments of the concrete standard EN 206. Hans-Gerd Meyer (Germany)

24

Session 2 - CONCRETE: THE COMPETITIVE MATERIAL Ready-mixed concrete/ Site-mixed concrete: End users should benefit from the same quality standards for all concrete structures Alain Boisselon, Remi Garcia, Dominique Hoestlandt, Herve Peuportier (France)

37

Concrete is concrete and ready mixed concrete is concrete Francisco J M de Eulate (Spain)

43

Concrete P 18-305 Standard. We share your requirements for quality Alain T Gauteur (France)

50

In situ concrete frameworks VS prefabricated frameworks Frank Johansson (Sweden)

55

Education on different levels in the Norwegian ready mixed concrete industry Malvin Sandvik (Norway)

60

A survey on the effect of concrete quality on cost of buildings Cengiz Koca, Coskun Erkay Erhan Karaesmen (Turkey)

65

VIII

Session 3 - CONCRETE: THE GREEN MATERIAL I A comparison of environmental techniques used in the European ready mixed concrete industry Tim Pinder (UK)

77

Recycling and reuse of concrete - Present situation and future trends in processing and concrete production: Part I - Fresh concrete; Part II - Hardened concrete Olaf Assbrock, Joachim Budnik (Germany)

85

Concrete production without waste Reinhold Scheiber (Austria)

99

Recycled concrete obtained of waste concrete produced in ready mixed concrete plant of Betopal - Betoes Preparados, SA, in Oporto Joaquim Sampaio (Portugal) 107 Innovative computer applications for pollution prevention planning and environmental management Paul A Beauchemin (Canada)

112

An economic solution to the protection of the environment from concrete washwater wastes Bayhass El-Jazairi (UK)

119

Guide for the labour risks prevention in a plant for the ready-mixed concrete production - The Spanish experience Nicolas B Calvo (Spain)

129

A novel method of recycling returned concrete using extended life admixtures. A Japanese experience Seiji Nakamura, Lawrence R Roberts (Japan/USA)

142

Session 4A - ENSURING QUALITY The mandates for the harmonised European Standards and the concrete M J Esteves Ferreira (Portugal)

155

EN 206 The European Standard for Concrete J D Dewar (UK)

169

European standards for admixtures - An update John Buekett, Bayhass El-Jaiziri (UK)

179

Assurance of quality- Comparison of reliability and consumer's risk of conformity control of certified ready mixed concrete and acceptance control Cees Souwerbren (Netherlands)

186

IX

Modernisation of Danish standards for concrete production - Experience with certification Freddie Larsen (Denmark)

194

Planning, preparing and implementing a quality system in a Portuguese ready mixed concrete Company Joao C Duarte (Portugal)

201

Establishment and practice of a quality assurance system in the Turkish ready mixed concrete Industry Necip N Dogru, Ata G Doven (Turkey)

210

Session 4B - CONCRETE: THE GREEN MATERIAL II Eco labelling of fresh concrete in the Nordic countries Ola Johansson (Sweden)

223

LCA - Life cycle assessment Evert Sandahl (Sweden)

228

Environmental compatibility of cement-based building materials Peter Schiessl, Inga Hohberg (Germany)

236

Small ready mix concrete plants located in sensitive nature areas. Recommended environmental practice in Norway Bjorn Vik (Norway) 246 Environmental challenges faced by the French ready mixed concrete industry by European and French regulations Philippe Annebicque, Herve Peuportier (France)

252

Assessment of the environmental compatibility of concrete admixtures Rene Galli, Michael Ochs, Urs Mader (Switzerland)

258

Concrete admixtures and the environment Hans G Hauck (Germany)

267

Session 5A - PRODUCTION AND CONFORMITY CONTROL Compressive strength of concrete - Conformity and safety according to EN 206 and Eurocodes Gert Konig, Dimitri Soukhov, Frank Jungwirth (Germany)

283

Statistical criteria for acceptance of materials. Performance of existing concrete standards ENV 206:1993 and prEN 206:1997 Jose M R Catarino (Portugal)

294

Risks associated to the compressive strength conformity criteria resulting from the application of the Portuguese Standard NP ENV 206 (1993) Madalena Teles, Paula Milheiro (Portugal)

304

The use of concrete families for the production and conformity control of concrete Thomas A Harrison (UK)

312

Discussion of the factors that control the form of the cement content to strength relationship PM Barber (UK)

322

Compressive strength of young concrete obtained in drilled cores Madalena Teles, Juliano Barbosa (Portugal)

329

Evaluation of in-place concrete strength by near-to-surface tests Sergio M R Lopes, Miguel C S Nepomuceno (Portugal)

338

Session 5B - MARKETING OF CONCRETE Markets and sales of ready mixed concrete Michele Valente (Italy)

351

Concept marketing for RMC - consumer orientation focusing on costs versus price and costumer satisfaction Roger Johansen (Norway)

362

"We have a - business - dream" 'But how about commitment...' - The story of the Dutch marketing of ready mixed concrete Robert J A M Woltering (Netherlands)

368

On the delay in payments in the commercial transactions Felix R Massa (Spain)

381

Experiences in technical marketing in Finland Seppo Petrow (Finland)

388

Quality for durability - Driving force for rmc in India Ajoy K Mullick, Christopher Rajkumar (India)

394

Brief presentation on the production of ready mixed concrete in Mozambique Antonio EAIves (Mozambique)

404

Session 6A - NEW TECHNOLOGIES I The fantastic input of information technologies in rmc activities: Challenge or illusion? Pierre E Richelle (Belgium)

411

XI

Optimised design of concrete and its component materials

JDDewar(UK)

418

A modern way to design and develop machinery and equipment for concrete production, transport, pumping and distribution Giorgio Moretti, Aldo Fumi (Italy)

429

Producing durable concrete structures with CPF J de Sousa Coutinho (Portugal)

439

Industrialised site-casted concrete Jan Byfors (Sweden)

450

The use of water induced magnetically in the physical and mechanical properties of ready mixed concretes Abdias M Gomes, Rubens de Sant'ana, Bernadete Trifilo (Brazil) 455 Workability of concrete with high cement content Tomas Kutti (Sweden)

462

Session 6B - SPECIAL CONCRETE I High-performance concrete for precast concrete girders - Safe design and delivery by ready mixed concrete Joachim Budnik, Kerstin Wassmann (Germany)

469

Low cost high performance concrete using low quality fly ash Aires Camoes, Patrfcio Rocha, J C Pereira, J B de Aguiar, Said Jalali (Portugal)

478

High performance concrete- A bridge to the future HJC Oud, H Ouwerkerk (Netherlands)

487

Influence of five types of coarse aggregate on some high strength concrete properties Jose RA Gongalves, Ivan R de Almeida, Lidia C D Shehata (Brazil)

493

Concrete admixtures: From traditional to innovative approach Jose David (Portugal)

502

New generation of superplasticizer for long slump retention in ready-mixed concrete Ivana Torresan, Rabinder Khurana, Sabatino Passacantando (Italy)

511

Admixtures for ready mixed high strength and durable concrete Rabinder Khurana, Sandro Scabini (Italy)

522