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JCI-RILEM International Workshop on "Control of Cracking of Mass Concrete and Related Issues Concerning Early Age Cracking of Concrete Structures"

ConCrack5 24-26 April 2017 | Institute of Industrial Science, the University of Tokyo



Program

Program of JCI-RILEM International Workshop on "Control of Cracking of Mass Concrete and Related Issues Concerning Early Age Cracking of Concrete Structures"

23-Apr-17
Start Finish Time Contents Participants
1700 1900 120 Reception

24-Apr-17
Start Finish Time Contents Speaker
900 910 10 Opening address from chair of organizing committee Ryoichi SATO
910 920 10 Welcome address from JCI president Kyuichi MARUYAMA
920 925 5 Encouragement message from French embasy in Japan Sébastien CODINA
Keynote lecture (5 min. for discussion )
930 1010 40 Experience of Vinci Construction Company in addressing early age issues in large concrete projects Laurent BOUTILLON
Invited lecture (5 min. for discussion of each presentation))
1010 1040 30 Cracking due to restrained shrinkage of massive concrete structures: Results of the CEOS.fr experiments Jean-Michel TORRENTI
1040 1110 30 DEF coupled to thermal history: Recent advances François TOUTLEMONDE
1110 1140 30 The revision of the French recommendations for the prevention of delayed ettringite formation Bruno GODART
1140 1330 110 Lunch / Technical exhibition
JCI Guidelines for control of cracking of mass concrete 2016
1330 1345 15 Outline Ryoichi SATO
1345 1405 20 Chapter 1 General and Chapter 2 Basis of Control and Prevention of Cracking Due to Heat of Hydration of Cement Takafumi NOGUCHI
1405 1435 30 Chapter 3 Planning for Control and Prevention of Cracking Due to Heat of Hydration Tsutomu KANAZU
1435 1500 25 Chapter 4 Verification of Cracking Due to Heat of Hydration of Cement; Design values of concrete Shingo MIYAZAWA
1500 1520 20 Discussions for Outlines and Chaper 1 - Chaper 4
1520 1540 20 Break
1540 1620 40 Chapter 4 Verification of Cracking Due to Heat of Hydration of Cement; Analysis  Toshiaki MIZOBUCHI
1620 1645 25 Chapter 5 Construction Works Toshiharu KISHI
1645 1700 15 Chapter 6 Inspection of Cracks Due to Heat of Hydration of Cement Hiroshi WATANABE
1700 1730 30 Background of provisions related to DEF cracking Shunsuke HANEHARA
1730 1750 20 Discussions for Chaper 4 - Chaper 6 and Background of provisions related to DEF cracking
1810 2010 120 Banquet All participants

25-Apr-17
Start Finish Time Contents Speaker
Keynote lecture (5 min. for discussion )
930 1010 40 Chemical expansion effect in concrete and its numerical simulation based on the mechanical energy conservation hypothesis Tadaaki TANABE
Invited lecture (5 min. for discussion of each presentation))
1010 1040 30 Current developments of RILEM TC 254-CMS ‘Thermal cracking of massive concrete structures’ Miguel AZENHA
1040 1110 30 Modeling of concrete at early age, benchmark carried out within COST TU 1404 Farid BENBOUDJEMA
1110 1140 30 Further works on concrete at early age coordinated within COST TU 1404 European project Stéphanie STAQUET
1140 1330 110 Lunch / Technical exhibition
General presentation (3 min. for discussion of each presentation))
Control of thermal effects at early age : Materials approach
1330 1350 20 Effect of metakaolin on strength and heat of hydration of concrete Thomas HARMON
1350 1410 20 Evaluation of novel concrete mixtures for use in residential basement walls for reducing shrinkage and cracking potential Mi G. CHORZEPA
1410 1430 20 Evaluation of thermal stress behavior and DEF risk of concrete using Fly Ash cement Takuya OHNO
Thermal effects at early age : Creep evaluation
1435 1455 20 Early age deformation, its resultant stress and creep properties of concrete with and without internal curing subjected to high temperature history at an early age Yuko OGAWA
1455 1515 20 Evaluation on apparent instantaneous stiffness decrease considering the effect of creep of mass concrete based on measurement results of actual structures Ryoichi ASHIZAWA
1515 1535 20 Break
Control of thermal effects at early age :prediction of stress and crack width
1535 1555 20 Numerical prediction of crack width in massive concrete member due to heat of hydration Siming LIANG
1555 1615 20 Study of thermal cracks in concrete structures using probability theory Masami ISHIKAWA
Control of thermal effects at early age : Implementation in real structures
1620 1640 20 Investigation of stresses generated in second lining concrete of NATM Tunnels in early age Chamila K. RANKOTH
1640 1700 20 Provisions against thermal and drying shrinkage cracking in construction of prestressed concrete bridge Kengo KOROYASU
1700 1720 20 Early age thermal cracking control in mass concrete shearwalls using high strength selfconsolidating concrete Des GUO
1720 1740 20 Criteria for the maximal admissible thermal differential within a mass concrete element Alain JEANPIERRE
1740 1750 10 Break
 1750  1800  10 Closing address from co-chair of organizing committee François TOUTLEMONDE

*Technical exhibition will be held in parallel with lectures and oral presentations at the place close to the Convention Hall.

Third day

The technical program is arranged by the Workshop committee. In this program, a one-day technical program will be provided for attendees to visit two construction sites of civil engineering concrete structures under construction. The summaries of the structures are shown as follows.

Minimum number of participants required: 10 persons,  Maximum capacity: 40 persons

Tokyo-Gaikan Expressway JCT North Ramp Project

Tokyo-Gaikan Expressway which is a ring road of approximately 85km is under construction to ease the traffic jam and improve the environment in and around Tokyo. In this project, JCT North Ramp of the expressway which is 260m in length, 80m in width and 20-40m in depth is being built using pneumatic caisson method and open cut method.  

Liquefied Natural Gas Inground Tanks

Tokyo Electric Power Company has been building two 125,000-kl LNG (Liquefied Natural Gas) inground tanks at Futtsu Thermal Power Stations for expanding the introduction of LNG.  In these tanks, a rigid junction structure for the coupling method of wall and slab has been adopted. These are cylindrical shapes, the inner diameter and depth are 69m and 41.7m respectively, and the thicknesses of the slab and the wall are 4.5m and 1.5m.


Technical Exhibition

The Workshop will provide an opportunity for companies/organizations to display their new technology, products and services in the field related to the workshop themes during the workshop. 

The charge for exhibition is JPY 150,000 including tax for one booth with an area of 1.8 x 1.8 m,  with exhibition panels (0.9 wide x 1.5 m high) and a table (0.6 x 1.8 m), and includes the full workshop registration fee for one person.

Scheduled Companies and Groups
Name of Company or Group
Taiheiyo Cement Corporation 太平洋セメント株式会社
The University of Tokyo & Kodama, Inc
東京大学大学院 工学系研究科 建築材料研究室 & 児玉 株式会社
Central Nippon Expressway Company Limited 中日本高速道路株式会社
JCI Committee on the Computer Code Promotion and Development for Crack Control in Massive Concrete
JCIマスコンクリートソフト普及委員会
Total Service Planning Co. Ltd 株式会社 ティ・エス・プランニング
Tokyo Sokki Kenkyujo Co.,Ltd. 株式会社東京測器研究所
Taisei Corporation 大成建設株式会社
Denka Company Limited デンカ株式会社
JIP Techno Science Corporation JIPテクノサイエンス株式会社
Kajima Technical Research Institute 鹿島建設技術研究所

Welcome party & Banquet

 1.    Welcome Party
Welcome party will be held on April 23, 2017 at the presentation room of Institute of Industrial Science, the University of Tokyo (see access map). It will start at 5:00PM.

2.     Banquet

Banquet will be held on April 24, 2017 at “Lever son Verre Komaba” in The University of Tokyo, KomabaⅠCampus. It will start at 6:10PM (http://www.u-tokyo.ac.jp/content/400020146.pdf.  No. 17 Komaba Faculty House)