DOCSLIB.ORG

Steel Fibre Reinforced Concrete for Tunnel Lining – Verification by Extensive Laboratory Testing and Numerical Modelling

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Steel Fibre Reinforced Concrete for Tunnel Lining – Verification by Extensive Laboratory Testing and Numerical Modelling Acta Polytechnica –(–):1–9, 2013 © Czech Technical University in Prague, 2013 available online at http://ctn.cvut.cz/ap/ STEEL FIBRE REINFORCED CONCRETE FOR TUNNEL LINING – VERIFICATION BY EXTENSIVE LABORATORY TESTING AND NUMERICAL MODELLING Jaroslav Beňoa,b,∗, Matouš Hilara,c a Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29 Prague, Czech Republic b Metrostav a.s., Koželužská 2246, 180 00 Prague, Czech Republic c 3G Consulting Engineers s.r.o., Na Usedlosti 16, 147 00 Prague, Czech Republic ∗ corresponding author: [email protected] Abstract. The use of precast steel fibre reinforced concrete (SFRC) for tunnel segments is a relatively new application of this material. It was first applied in Italy in the 1980s. However, it did not begin to be widely applied until after 2000. The Czech Technical University in Prague (CTU), together with Metrostav, carried out a study to evaluate the use of this new technology for tunnels in the Czech Republic. The first tests were carried out on small samples (beams and cubes) produced from SFRC to find an appropriate type and an appropriate dosage of fibres. The tests were also used to verify other factors affecting the final product (e.g. production technology). Afterwards, SFRC segments were produced and then tested at the Klokner Institute of CTU. Successful test results confirmed that it was possible to use SFRC segments for Czech transport tunnels. Consequently a 15 m-long section of segmental lining generated from SFRC without steel rebars was constructed as part of line A of the Prague metro. Keywords: Steel fibre reinforced concrete, segmental tunnel lining, mechanical excavation, laboratory testing. 1. Introduction are influenced by several factors: the material of the Steel fibre reinforced concrete (SFRC) is a relatively fibres, the shape of the fibres (especially adjustment new structural material. In the past, it was used of the ends), the amount of added fibres, and the mainly for construction of industrial floors. Nowadays, composition of the concrete mixture. It is necessary SFRC often replaces steel bar reinforced concrete; the to ensure uniform distribution of fibres in the con- tunnel lining from precast segments is one of many crete, and to ensure that they are well coated with examples. In tunnelling SFRC is used in three basic cement mortar. SFRC cannot be generated just by modifications – sprayed concrete for primary outer adding fibres to a standard concrete mix. The com- lining, in situ cast concrete for the secondary inner position of the SFRC mix has to be designed taking lining, and precast segments for tunnels constructed into account the increased volume of the aggregate with tunnelling shields. The main advantages of SFRC caused by fibres. The dosage of fibres is determined over widely-used steel bar reinforced concrete (RC) by McKee’s theory. The minimum amount of fibres segments are as follows: simple production, higher depends on their length and thickness. Some types of durability, lower consumption of steel, lower number of fibres can generate conglomerates during the mixing defects, etc. A major disadvantage of SFRC segments process; they should therefore be added to the mix without steel rebars is their lower bending capacity. using dosing and dispersing equipment before mixing. Uniformly distributed and randomly oriented fibres The length of the fibres length should be approxi- transform brittle plain concrete into ductile SFRC. mately three times the maximum aggregate size. This SFRC can be used to replace plain concrete or re- will bridge cracks located on the border of the grains, inforced concrete. The steel fibres improve the me- and avoiding pulling out of fibres during the develop- chanical properties of the concrete. The fibres carry ment of these cracks. The strength of SFRC parame- local tensions caused by three-dimensional stress be- ters depend mainly on the aspect ratio of the fibres tween aggregate particles. Fibres in concrete enhance (length to diameter) and on the dosage of fibres (when its compressive strength, but especially SFRC tensile there is the same concrete matrix). A higher aspect strength is higher. SFRC has high resistance against ratio (or a higher fibre content) generally means better the development of microcracks. This feature is re- performance of the SFRC. lated to SFRC’s high resistance against dynamic load SFRC is especially suitable for structures loaded and resistance against sudden temperature changes. in more than one direction, where traditional bar re- The physical and mechanical properties of SFRC inforcement is problematic. This means that SFRC 1 J. Beňo, M. Hilar Acta Polytechnica Figure 1. Spalling of unreinforced edges of traditionally reinforced segments [1] is not appropriate for unidirectionally loaded struc- tor (a hydraulic arm at the rear part of the shield). tures, because the randomly oriented fibres would One ring usually has dimensionally identical segments; be largely unloaded. SFRC is therefore suitable for the final segment (the key segment) has a different tunnel segments loaded in various directions during shape and is smaller in size. Individual segments are their production, installation and permanent func- connected by bolts. The space between the lining and tion. Polypropylene (PP) fibres cannot be used as a the ground is grouted. reinforcement for concrete structures, because they Segments are loaded by a wide range of loading have a low modulus of elasticity (lower than concrete), conditions during their lifetime. Similarly to other which means big deformations. Moreover, PP fibres precast structures, the segments have to endure de- lose their mechanical properties at 50°C and melt at moulding, manipulation, storage and transportation 165°C. PP fibres can be used in SFRC structures or to the construction site. They also have to carry loads in reinforced concrete structures to increase their fire during their installation, namely they should be able resistance. to carry the axial forces generated by the hydraulic rams that push the shield into the ground. The load 2. Segmental tunnel lining generated by shield rams is often decisive for the de- sign of the segments. All load cases mentioned here Tunnel linings constructed from precast reinforced are only temporary. The segments are loaded only concrete segments started to be used in the 1950s, by ground pressure and hydrostatic pressure during when they gradually replaced steel and cast-iron seg- tunnel operation. This load case should correspond ments. Reinforced concrete linings from precast seg- with the reinforcement of the segments. ments were widely used in the construction of the metro in Prague, where the lining was not waterproof due to the manufacturing tolerances. Water-tightness 3. A comparison of traditionally of the lining was reached by additional grouting of reinforced segments and SFRC the joints between segments, but the risk of leakage was relatively high. Modern segmental linings have segments manufacturing tolerances of ±0.5 mm, and water tight- SFRC segments are suitable for structures without ness is guaranteed by impermeable concrete together high bending moments. A tunnel lining constructed with EPMD (ethylene propylene diene monomer) gas- by tunnelling shields is circular in shape, which is kets between the segments. SFRC segments can have advantageous due to the low bending moments. In complicated details, as every part of the segment is standard geotechnical conditions, the segments are uniformly reinforced by fibres (Fig. 1). There is there- loaded mainly by compression with relatively small fore less damage of segments during transportation eccentricity (i.e. without bending and without tensile and installation, which means that there is a lower stress). risk of leakage and fewer repairs are required. After reaching tensile strength, the deformation of Nowadays segmental lining is used only in mechani- SFRC does not increase abruptly, but thanks to the cal tunnelling with tunnelling shields (Tunnel Boring uniformly distributed fibre deformations it increases Machine technology – TBM). A permanent lining is gradually and causes a greater number of small cracks. installed directly behind the tunnel face under the This is because the fibres are activated and are contin- shield protection. The lining has a circular shape uously pulled out from the concrete. The cracks are composed of several precast concrete segments. Each relatively small, and the crack openings remain small. segment is placed in the required position by the erec- The total value of the tensile strength of the segments 2 vol. -- no. --/2013 Steel Fibre Reinforced Concrete for Tunnel Lining is significantly lower than in the case of bar-reinforced uniformity in the design methods and required tests. concrete segments. A European standard for the design of SFRC struc- The behaviour of reinforced concrete is different. tures is currently being prepared. The standard will After reaching tensile strength, the increment of the be based on EC 2 for concrete structures; parts fo- deformation develops until full activation of the bar cused on SFRC will be amended. reinforcement. This results in wider cracks than in the case of SFRC, and one main crack usually appears. 4. Tests on SFRC samples Afterwards, however, the deformation stabilizes and Laboratory tests on SFRC are similar to plain con- grows approximately linearly, until it reaches the yield crete tests. In contrast to plain concrete, the tensile strength of steel bars. This is significantly higher strength or the equivalent tensile strength after crack- than the strength of steel fibre reinforced concrete ing of SFRC structures can be taken into consideration. in tension. Destruction of the structure occurs after The effect of added fibres on increasing of the cube reaching the ultimate strength of steel in tension or compressive strength, the tensile splitting strength crushing of concrete in compression. and the equivalent flexural strength is not identical. SFCR structures are better protected against cor- Due to the added steel fibres, the tensile strength rosion. This is mainly because there are lower crack usually increases more than the compressive strength.
Load more

Recommended publications
  • The Overview of Green Building Sector in Slovakia
    EAI Endorsed Transactions on Energy Web Research Article The overview of green building sector in Slovakia Julius Golej1,* and Andrej Adamuscin1 1 Slovak University of Technology in Bratislava, Institute of Management, Slovakia Abstract Green buildings have become a global trend in recent years, reflecting a social order for sustainable development from the sides of all stakeholders. This is confirmed by the fact that the global construction of green buildings comprises for almost a quarter of the total production of all buildings. Buildings generally represent a huge sector of energy consumers, so it is now necessary to reduce this consumption through smart design solutions and an appropriate building management system that will ensure efforts to achieve sustainable and smart urban requirements for the use of intelligent technologies. Regarding to the development of green buildings, Slovakia belongs to developing countries. The term "green building" is slowly becoming familiar in Slovakia, although it should be noted that the green building certification systems are only at the beginning. Also, the legislative and other financial support instruments for green buildings in Slovakia are under the phase of consideration and do not exist in practice. In the following paper, the authors explore green building sector in Slovakia. They present their development and overview, rating systems and analyses the most important investors and key local companies related to green buildings in Slovakia. Keywords: green building, Slovakia, rating systems, LEED, BREEAM. Received on 12 February 2019, accepted on 07 May 2019 , published on 13 May 2019 Copyright © 2019 Julius Golej et al., licensed to EAI. This is an open access article distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/3.0/), which permits unlimited use, distribution and reproduction in any medium so long as the original work is properly cited.
    [Show full text]
  • Traťové Tunely Metra a Stanice Espoonlahti, Finsko
    28. ročník - č. 2/2019 TTRAŤOVÉRAŤOVÉ TTUNELYUNELY MMETRAETRA A SSTANICETANICE EESPOONLAHTI,SPOONLAHTI, FFINSKOINSKO UUNDERGROUNDNDERGROUND RRAILWAYAILWAY TTUNNELSUNNELS AANDND SSTATIONTATION OOFF EESPOONLAHTI,SPOONLAHTI, FFINLANDINLAND AALEŠLEŠ GGOTHARD,OTHARD, PPAVELAVEL HHERMANERMAN ABSTRAKT Příspěvek obecně popisuje jeden z největších, v současnosti realizovaných, infrastrukturních projektů v Evropě. Jedná se o prodloužení stávající trasy metra z Helsinek do sousedního města Espoo ve Finsku. Detailní zaměření příspěvku se týká jedné z jeho částí, úseku ra- žené stanice Espoonlahti a k ní příslušející části traťových tunelů metra, které v období 2016–2018 realizovala společnost Metrostav a.s. ve spolupráci se svým fi nským partnerem, společností Destia Oy. Zaměřuje se na specifi ka provádění ražeb v žulových horninách v husté rezidenční zástavbě a z toho vyplývající nutnosti limitace účinků trhacích prací na okolní zástavbu. Dále řeší problematiku provádění předstihových a následných injektážních prací, které byly projektem vyžadovány ve velké míře. Obecně popisuje použitou metodu ražby Drill and Blast a k ní odpovídající použitou strojní sestavu. Součástí příspěvku je také vyjmenování nejzásadnějších problémů zastižených během provádění prací s popisem jejich řešení. ABSTRACT The paper describes one of the largest infrastructural projects currently under construction in Europe. It is the extension of the existing metro line from Helsinki to the neighbouring city of Espoo in Finland. The detailed focus of the paper relates to one of project’s lots, which is the mined station of Espoonlahti and related metro tunnels, which was built by Metrostav a.s. in cooperation with its Finnish partner Destia Oy during 2016–2018. It focuses on the specifi cs of excavation in granite rocks in a dense residential area and the consequent necessity of limiting the effects of blasting works on the surrounding buildings.
    [Show full text]
  • Company Participant Position Profile Looking for Web 1 AERO
    Business mission accompanying the Prime Minister of the Czech Republic, H.E. Mr. Andrej Babiš, to Turkey Company Participant Position Profile Looking for Web Aero is the biggest manufacturer of aviation technology in the Czech Republic. It is engaged in the development, production, sale and servicing of military and civil aviation technology. It focuses on the Cooperation with Turkish Aircraft Industries in the development of their new 1 AERO Vodochody AEROSPACE a.s. Jakub Hoda Sales Vicepresident development, production and maintenance of its own aircraft and on cooperation with leading aerospace training aircraft Hurier. AERO Vodochody offers cooperation due to our www.aero.cz/en manufacturers in international cooperative projects. As part of the military program, it has been a longtime successful development of the L-39NG. partner of the armed forces of several countries, in particular the Armed Forces of the Czech Republic. CPIA was established in September 2015 as a non-exclusive partnership of companies, who are active in design, manufacturing, deliveries and installations in nuclear power plant projects. Czech industry has a long 2 Peter Bodnár Committee Chairman record of activities in nuclear sector, in history 90% of NPP equipment were produced domestically. The know- how and craftsmanship remained, so the companies are capable of deliveries of various commodities for NPP worldwide. CPIA is lead by ŠKODA PRAHA, a leader with unique experience of being the EPC contractor of all domestic nuclear units. CPIA is also supported by Czech government as it meets the official requirements from National Action Plan for development of nuclear power. REGULAR MEMBERS • Partners for joint ventures – focusing on nuclear energy, mainly Akkuyu ŠKODA PRAHA project DOOSAN ŠKODA POWER • Cooperation with local companies in design, manufacturing, production and Aliance české energetiky z.s.
    [Show full text]
  • CZECH Building Industry Supplement of Czech Business and Trade
    6/ 2006 Supplement of Czech Business and Trade CZECH Building Industry CZECH BUILDING INDUSTRY CZECH BUILDING INDUSTRY Building Industry Supplement of: Czech Business and Trade 11-12/2006 – Sector with CONTENTS: INTRODUCTION 3 Building Industry – Sector with Good Prospects Good Prospects ANALYSIS 4 Building Industry Is Recording a High Performance 4 Trends in Building Materials Production Václav Knor, Ministry of Industry and Trade, INVESTMENT e-mail: [email protected], www.mpo.cz 6 TOP INVEST – Competition for the 2005 Best Investment Plan 7 Building in the Czech Republic Will Be Simpler EDUCATION Building production creates works which have a long life 8 Foreign Cooperation at the Faculty of Civil Engineering and represent not only material rendering but also cultural of the Czech Technical University in Prague and architectural values. The character of the building WE ARE INTRODUCING industry is largely national, it is mostly self-reliant 10 High Standard of Czech Concrete nationally, and as a sector is considerably diversified. In ENTERPRISE factual terms, it is the main creator of buildings and 12 Universal Building Company Enjoying its Many Successes structures which are a major part of gross fixed assets. CZECH TOP 14 Modern Face of the Constuction Industry Changes in Construction Development 16 Skanska – Global Construction Group in the Czech Republic 18 Leading Player in the Construction of Tunnels The establishment of a National Technology Platform has 20 Traditional Brand for Buildings of the 21st Century been initiated in the Czech Republic within the European 22 The Most Prestigious Award for Czech Builders and Architects Construction Technology Platform (ECTP), and with it RESEARCH & DEVELOPMENT comes the participation of representatives of the Czech 24 Four Basic Trends in Building Materials Research building industry in the specification and implementation of the tasks and instruments of research, development and SURVEY 26 Poll of Successful Companies Operating in the Building Industry innovation (within the so-called High Level Group (HLG).
    [Show full text]
  • Annual Report 2014 Contents
    Annual Report 2014 Contents Highlighting green certification Group overview Throughout this Annual Report the relevant logos are used to indicate 2014 in brief 2 when projects are, or are in the process of being, certified to a green Comments by the President and CEO 4 certification scheme. Green certification provides voluntary third-party Mission, goals and strategy 6 validation of the environmental design and/or performance of build- Financial targets 8 ings and infrastructure. Skanska has expertise around a number of the Business model 10 schemes most relevant to its home markets. Today over 600 Skanska Risk management 12 employees are accredited by external agencies for their expertise in this area – expertise which is used to execute projects for clients and Sustainable development 16 for Skanska’s own development units. –Environmental agenda 17 –Social agenda 23 Employees 32 Share data 36 Business streams 40 Construction 42 Leadership in Energy BRE Environmental Civil Engineering – Nordics 46 and Environmental Assessment Method, Environmental Quality – Other European countries 50 Design, LEED BREEAM Assessment and Award Scheme, CEEQUAL – North America 54 Residential Development 58 – Nordics 62 – Central Europe 64 Commercial Property Development 66 Strong year for Skanska in London – Nordics 70 – Central Europe 72 – North America 74 Infrastructure Development 76 – Project portfolio 79 30 St Mary Axe Heron Tower (The Gherkin) Financial information Bevis Marks Dashwood Report of the Directors 85 House Corporate governance report 93 Consolidated income statement 103 Consolidated statement of comprehensive income 104 Consolidated statement of financial position 105 Consolidated statement of changes in equity 107 Consolidated cash flow statement 108 Parent Company income statement 110 London is a major construction market for Skanska, and in 2014 the company had Parent Company balance sheet 111 10 office projects in progress covering an overall area of 237,000 sq m with a total Parent Company statement of changes in equity 112 contract value of GBP 684 M.
    [Show full text]
  • 2019 Annual Report Annual 2019
    a force for good. 2019 ANNUAL REPORT ANNUAL 2019 1, cours Ferdinand de Lesseps 92851 Rueil Malmaison Cedex – France Tel.: +33 1 47 16 35 00 Fax: +33 1 47 51 91 02 www.vinci.com VINCI.Group 2019 ANNUAL REPORT VINCI @VINCI CONTENTS 1 P r o l e 2 Album 10 Interview with the Chairman and CEO 12 Corporate governance 14 Direction and strategy 18 Stock market and shareholder base 22 Sustainable development 32 CONCESSIONS 34 VINCI Autoroutes 48 VINCI Airports 62 Other concessions 64 – VINCI Highways 68 – VINCI Railways 70 – VINCI Stadium 72 CONTRACTING 74 VINCI Energies 88 Eurovia 102 VINCI Construction 118 VINCI Immobilier 121 GENERAL & FINANCIAL ELEMENTS 122 Report of the Board of Directors 270 Report of the Lead Director and the Vice-Chairman of the Board of Directors 272 Consolidated nancial statements This universal registration document was filed on 2 March 2020 with the Autorité des Marchés Financiers (AMF, the French securities regulator), as competent authority 349 Parent company nancial statements under Regulation (EU) 2017/1129, without prior approval pursuant to Article 9 of the 367 Special report of the Statutory Auditors on said regulation. The universal registration document may be used for the purposes of an offer to the regulated agreements public of securities or the admission of securities to trading on a regulated market if accompanied by a prospectus or securities note as well as a summary of all 368 Persons responsible for the universal registration document amendments, if any, made to the universal registration document. The set of documents thus formed is approved by the AMF in accordance with Regulation (EU) 2017/1129.
    [Show full text]
  • Economy of Belarus Magazine
    CONTENTS: FOUNDER: MODERNIZATION Council of Ministers of the Republic of Belarus MEMBERS: Alexei DAINEKO Ministry of Economy of the Republic of Belarus, Modernization: Ministry of Finance of the Republic of Belarus, Priorities and Essence Ministry of Foreign Affairs of the Republic of Belarus, Belarusian Telegraph Agency BelTA A country’s prosperity hinges on the pace of its economic modernization 4 EDITORIAL BOARD: Tatyana IVANYUK Mikhail Prime Minister of Belarus, MYASNIKOVICH Corresponding Member of the National Academy Learning of Sciences of Belarus (NASB), Doctor of Economics, from Mistakes Professor (Chairman of the Editorial Board) Total investment spent on the upgrade of Belarus’ wood processing industry Boris BATURA Chairman of the Minsk Oblast is estimated at €801.9 million 9 Executive Committee Olga BELYAVSKAYA Igor VOITOV Chairman of the State Committee for Science and Technology, Doctor of Technical Sciences, A New Lease on Life Professor Belarus is set to upgrade about 3,000 enterprises in 2013 13 Igor VOLOTOVSKY Academic Secretary of the Department of Biological Sciences, NASB, Doctor of Biology, Professor Dmitry ZHUK Director General of Belarusian Telegraph Agency BelTA Vladimir ZINOVSKY Chairman of the National Statistics Committee Alexander Director General of the NASB Powder Metallurgy ILYUSHCHENKO Association, NASB Corresponding Member, Doctor of Technical Sciences, Professor Yekaterina NECHAYEVA Viktor KAMENKOV Chairman of the Supreme Economic Court, Ingredients of Success Doctor of Law, Professor Belarusian companies can rival many world-famous producers 16 Dmitry KATERINICH Industry Minister IN THE SPOTLIGHT Sergei KILIN NASB сhief academic secretary, NASB Corresponding Member, Doctor of Physics and Mathematics, Tatyana POLEZHAI Professor Business Plan Nikolai LUZGIN First Deputy Chairman of the Board of the National for the Country Bank of the Republic of Belarus, Ph.D.
    [Show full text]
  • Yearly Report Metrostav A.S. 2015
    Yearly Report Metrostav a.s. 2015 Contents 4 Company profile 6 Introduction of the Chairman of the Board of Directors 8 2015 in figures and pictures 10 Highlights of 2015 12 Strategic targets of the Company 18 Business development of Metrostav Group 24 Social responsibility priorities 30 Corporate governance 32 Metrostav Group chart 33 Key consolidated figures of Metrostav Group in 2011–2015 34 Contact information Company profile Metrostav, the leading company of the Metrostav Group, in 2015 reaffirmed its position of number one on the Czech construction market and maintained the second place in this field among the countries of Central and Eastern Europe. The Company bores tunnels, builds the metro, bridges, motorways and roads, as well as residential houses and industrial buildings, power plants and wastewater treatment plants. In addition, it renovates historical structures. Its activities 4 account for almost half of domestic underground construction; Metrostav is one of the few companies in the Czech Republic that employ highly specialized, traditional mining methods of construction. Metrostav is well aware that evidence of genuine stability and sustainable business of each company is not just financial results, but also corporate conduct demonstrating their social responsibility. 5 Introduction of the Chairman of the Board of Directors 2015 was another successful year railway tunnels in Ejpovice and we would like The Environmental Impact Assessment (EIA) to use it abroad as well. Act may bury not only new projects under for the Metrostav Group. The preparation, but also the project that are ready Group’s external turnover and Construction of the Blanka tunnel was difficult for tenders.
    [Show full text]
  • REFERENCES Power Industry
    REFERENCES Power industry YEAR NAME OF THE PROJECT DESTINATION 2019 P2018205822 - Oulun Energia Oy, valves S43 DN 80 - 350 PN 250 for OY Konwell AB Finland 2019 P2019204096 - JE Temelín, valves L32.61 DN 2600 PN 6 for ČEZ a.s. Czech Republic 2019 P2019204096 - JE Temelín, valves M20.31 DN 2600 PN 6 for ČEZ a.s. Czech Republic 2019 P2019202382 - TEC22, valves S33 DN 1400 PN 6 for COATECH EUROPE LLP Russia 2019 P2019202078 - TEC22, valves S33 DN 1600 PN 6 for COATECH EUROPE LLP Russia 2019 PN110000660 - valves S43.55 DN 300 PN 250 for DOOSAN ŠKODA POWER s.r.o. Turkey 2019 7000868689 LOMBOK - Valves C09.65 DN 100 - 300 PN 6 - 63 for Siemens s.r.o Indonesia 2019 P2018204215 - NUVOCO VISTAS (25MW), valves C09.65 for Siemens LTD India 2019 P2018204104 - Valves L32.88 DN 450 PN 16 for ShangHai Boilers Works China 2019 P2019200260 - Supply of valves S33.48 DN 700 for Metrostav a.s. Czech Republic 2019 P2019200213 - Supply of valves C61.4 DN 1300 for Danieli Corus B.V. Holland 2019 P2019200260 - Supply of valves S33.48 DN 700 for Metrostav a.s. Czech Republic 2019 P2019204150 - RCHS 9, 10 ETB, valves S43.55 DN 150/110 PN 250 for ENEZA, s.r.o. Czech Republic 2019 P2019200455 - Valves K92.24 NPS 48" class 600 for Armatury Group GmbH Austria 2018 Supply of ball valves K92, K91 for Danieli Corus Holland 2018 Changing of the gate valves in Nuclear power plant Temelín, ČEZ a.s. Czech Republic 2018 Supply of valves L32.71 DN 1100, 1500 for Brodrene Dahl a.s.
    [Show full text]
  • Metrostav Group Diagram. Situation As of 1 November 2020 Kkkkkkkkkkkkkkkkkkkkkkkk Code of Ethics Contacts
    profile. 01 UNDERGROUND 02 TUNNEL CONSTRUCTION 03 ROAD CONSTRUCTION 04 BRIDGES 05 RAILWAY CONSTRUCTION 06 CONSTRUCTION FOR THE ENERGY INDUSTRY c o 07 HYDROPOWER PLANTS AND RENEWABLE SOURCES 08 CONSTRUCTION FOR INDUSTRY AND LOGISTICS 09 TRUNKS, PIPELINES AND WWTPS 10 WATER ECONOMY CONSTRUCTION 11 OFFICE BUILDINGS 12 BUSINESS AND SHOPPING CENTRES 13 HOTELS AND APARTMENT HOUSES 14 CONSTRUCTION FOR MEDICAL PURPOSES 15 CONSTRUCTION FOR THE EDUCATION SYSTEM 16 CONSTRUCTION FOR SPORTS 17 SCIENCE AND RESEARCH 18 RESIDENTIAL HOUSING 19 RECONSTRUCTION OF HISTORICAL AND CULTURAL BUILDINGS TECHNOLOGIES BUILDING INFORMATION MANAGEMENT – BIM DIVISIONS ORGANIZATIONAL STRUCTURE OF THE COMPANY METROSTAV GROUP DIAGRAM CODE OF ETHICS AND ETHICAL LINE CONTACTS n t e n t 1 3000 Metrostav a.s. leader in the Czech employees construction market Fifty years of good work. Hundreds of successfully Our history of success has taught completed projects for both private and public us to look to the future. This is investors. Financial stability. This is Metrostav. why we continue to modernize The largest Czech building company and the leading and improve our skills while placing 800 member of Metrostav Group, comprising over great emphasis on respect for the 50 entities operating in 16 countries worldwide. environment. In addition, our history has taught us something else: to value We specialize in: everyone who has participated in it. million EUR turnover Therefore, we are increasingly investing in underground construction including urban the professional development of our people, metros, in our company culture, and in the care of transport construction, our former colleagues. industrial projects, 50 250 civic construction, ecological construction.
    [Show full text]
  • STRABAG SE Investor Presentation (November 2020)
    STRABAG SE INVESTOR PRESENTATION NOVEMBER 2020 DISCLAIMER This presentation is made by STRABAG SE (the "Company") solely for identified by words such as "believes“, "expects”, "predicts”, "intends”, use at investor meetings and is furnished to you solely for your "projects”, "plans”, "estimates”, "aims”, "foresees”, "anticipates”, "targets”, information. and similar expressions. The forward-looking statements, including but not limited to assumptions, opinions and views of the Company or information This presentation speaks as of November 2020. The facts and information from third party sources, contained in this presentation are based on contained herein might be subject to revision in the future. Neither the current plans, estimates, assumptions and projections and involve delivery of this presentation nor any further discussions of the Company uncertainties and risks. Various factors could cause actual future results, with any of the recipients shall, under any circumstances, create any performance or events to differ materially from those described in these implication that there has been no change in the affairs of the Company statements. The Company does not represent or guarantee that the since such date. None of the Company or any of its parents or subsidiaries assumptions underlying such forward-looking statements are free from or any of such person's directors, officers, employees or advisors nor any errors nor do they accept any responsibility for the future accuracy of the other person (i) accepts any obligation to update any information opinions expressed in this presentation. No obligation is assumed to contained herein or to adjust it to future events or developments or (ii) update any forward-looking statements.
    [Show full text]
  • Integration Into the World Economy: Companies in Transition in the Czech Republic, Slovakia, and Hungary
    INTEGRATION INTO THE WORLD ECONOMY: COMPANIES IN TRANSITION IN THE CZECH REPUBLIC, SLOVAKIA, AND HUNGARY Leslie E. Grayson The Isidore Horween Research Professor of International Business Samuel E. Bodily John Tyler Professor of Business Administration Darden Graduate School of Business Administration University of Virginia Charlottesville, Virginia, USA RR–96–19 December 1996 INTERNATIONAL INSTITUTE FOR APPLIED SYSTEMS ANALYSIS Laxenburg, Austria International Standard Book Number 3-7045-0130-1 Research Reports, which record research conducted at IIASA, are independently reviewed before publication. Views and opinions expressed herein do not necessarily represent those of the Institute, its National Member Organizations, or other organizations supporting the work. Copyright c 1996 International Institute for Applied Systems Analysis. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage or retrieval system, without permission in writing from the publisher. Cover design by Anka James. Printed by Novographic, Vienna, Austria. Contents Acknowledgments v PART I: DISCUSSION Introduction 3 The Macroeconomic and Political Environment in Mid-1995 4 Financial Sectors 6 Marketing 9 Operations Management 11 Financial Management 13 Strategy 14 Managerial Behavior 15 Summary and Conclusions 21 PART II: CASE STUDIES Biotika, A.S., Slovakia 27 Botana, A.S., Czech Republic 32 Elektromontaˇzn´ıZ´avody, A.S., Czech
    [Show full text]