Proceedings of the International rilem conference Materials, Systems and Structures in Civil Engineering 2016
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- 3. Conclusions
- Acknowledgement
- Author Index
402 International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference segment on Service Life of Cement-Based Materials and Structures 22-24 August 2016, Technical University of Denmark, Lyngby, Denmark
paste due to silica fume addition increases self-desiccation and thus shrinkage [8], [33]-[35]. In terms of autogenous shrinkage prediction, the Japan Concrete Institute underestimated the autogenous shrinkage of both the Ref and SF mixtures, taking into account water/binder ratio and considering ordinary Portland cement as the binder. When 20% and 30% of sand was replaced with ECat occurred a reduction of about 32% and 38%, respectively, in autogenous shrinkage of the mortars compared with that of SF mixture . Lower reductions were found for 10% of sand replacement by ECat (see Figure 5). But a strong increase of shrinkage deformations was observed for 40% sand replacement with ECat. This might be due to the strong reduction of aggregate, it means sand which was replaced by ECat, phase volume or increase of binder phase. This might be due to the strong reduction in the inert materials present in the aggregates and, concomitantly, to a significant increase in the reactive materials present both in the binder phase and the ECat incorporated as a surrogate for sand. In addition, one can expect that after a given replacement level the dispersion of ECat particles in the matrix becomes less uniform and its effect as internal water reservoirs to mitigate autogenous shrinkage is less efficient.
This paper studied the efficiency of ECat for mitigating the autogenous shrinkage of UHPC, when used as a partial surrogate for sand. The results revealed that ECat particles act as internal reservoirs in UHPC matrix, feeding the capillary pores or a source of curing water to the paste volume in its vicinity. Among the replacement levels studied, 20% and 30% sand replacement by ECat was found to perform better in terms of autogenous shrinkage reduction without impairing the workability, and even improving the compressive strength at both the 7 and 28 days. Thus, further improvements of UHPC mixtures can be envisaged by replacing, simultaneously, part of the binder (cement+SF) and part of the fine aggregate by ECat, without impairing other properties like workability, compressive strength and durability. It should be mentioned also that a decrease of shrinkage deformations is also expected after the inclusion of fibres. Finally, the incorporation of ECat in UHPFRC saves landfill usage, turning an otherwise polluting waste into a value-added by-product.
Acknowledgement
The first author wishes to thank the financial support of the Portuguese Foundation for Science and Technology (FCT) through the PhD scholarship PD/BD/113636/2015, attributed within the Doctoral Program in Eco-Efficient Construction and Rehabilitation (EcoCoRe). The authors are also grateful to Dr. Eng. Lino Maia and CONSTRUCT. Acknowledgements are also due to Secil, GALP and Sika for supplying, respectively, cement, ECat and admixtures.
References
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404 International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference segment on Service Life of Cement-Based Materials and Structures 22-24 August 2016, Technical University of Denmark, Lyngby, Denmark
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Author Index
Kamilia Abahri 385 Lucas Adelaide 95 Yilmaz Akkaya 453 Marcos G. Alberti 287 Hartmann Alberts 39 Ouali Amiri 221 Ali Amiri 493 Armen Amirkhanian 211 José J. Anaya 755 Sofia Aparicio 755 Paul Archbold 513 Miguel Azenha XIII 297 651
Jesus Miguel Bairan 145 Diana Bajare 435 Luis Baquerizo 463 Zeynep Basaran Bundur 493 Muhammed Basheer 307 Farid Benboudjema 59 325 675 715 725 Ahmed Zakarya Bendimerad 407 Rachid Bennacer 385 Shashank Bishnoi 573 Dubravka Bjegovi 553 Edgar Bohner 165 Stéphanie Bonnet 533 Elia Boonen 735 Xavier Bourbon 95 425 Véronique Bouteiller 95 Rok Bregar 503 Matthieu Briffaut 125 Eric Brouard 483 Laurie Buffo-Lacarrière 425 Vesna Bulatovi 523 Girts Bumanis 435 Paulo Cachim 195 Yin Cao 579 695 Jérôme Carette 377 385 Pietro Carrara 543 Thierry Chaussadent 95 Jiayi Chen 745 Özlem Cizer 317 573 Utkan Corbacioglu 453 Manuel Corbin 79 Pedro Costa 195 Carla Costa 395 Alex Coyle 211 Maria D. Crespo 145 Wilson Ricardo Leal Da Silva 463 Aveline Darquennes 325 385 725
Gheorghe-Alexandru David 503
Nele De Belie 177 José de Frutos 621 Laura De Lorenzis 543 Caroline De Sa 325 Geert De Schutter 203 Ákos Debreczeni 415 Arnaud Delaplace 483 Brice Delsaute 407 Fuat Demir 443 Dries Devisscher 177 Joris Dockx 317 Hua Dong 355 Wei Dong 685 Peter Dubruel 177 Cyrille Dunant 345 Youssef El Bitouri 425 Mats Emborg 609 Alejandro Enfedaque 287 Oskar Esping 155 Rui Faria 641 Emanuel Felisberto 641 Ignasi Fernandez Perez 231 Denise Ferreira 145 Miguel Ferreira 165 John Flattery 513 José Vicente Fuente 755 Ivan Gabrijel XIII 553 705 Erez Gal 789 Jaime C. Galvez 287 Peng Gao 789 Ricardo García-Rovés 621 Paolo Gardoni 631 Fabrice Gatuingt 675 Carlos Gil Berrocal 231 Zehra Canan Girgin 365 Margarita González 755 Jorge Gosalbez 755 Joan Govaerts 259 José Granja 297 Viktor Gribniak 279 Eugenijus Gudonis 279 Alex-Walter Gutsch 39 Karolina Hajkova 463 Petr Havlasek 463 Hans Hedlund 609 Peter Heinrich 249 Christian Hellmich 665 Wibke Hermerschmidt 39 715 Adrien Hilaire 345 Volker Hirthammer 115 Douglas Hooton 105 Liesbeth Horckmans 317 Muhammad Irfan-Ul- Hassan 665 Diederik Jacques 203 259 Michaela Jakubickova 735 Ronaldas Jakubovskis 279 Ole Mejlhede Jensen XIII XV
Shiju Joseph 573 Xavier Jourdain 675 Joachim Juhart 503 Mantas Juknys 279 Sakdirat Kaewunruen 135 Gintaris Kaklauskas 269 279 Zainab Kammouna 125 Terje Kanstad XIII 589 Gediminas Kastiukas 685 Said Kenai 777 Egemen Kesler 453 Vitaliy Kindrachuk 115 Gunrid Kjellmark 589 Anja Estensen Klausen 589 Agnieszka Knoppik-Wróbel 49 Eduardus Koenders 599 Pavel Krivenko 1 11 Markus Krüger 503 Josip Kujek 553 Markus Königsberger 665 Serhii Lakusta 11 Oles Lastivka 11 Martin Laube 39 Kefei Li 69 406 International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference segment on Service Life of Cement-Based Materials and Structures 22-24 August 2016, Technical University of Denmark, Lyngby, Denmark
Quanwang Li 69 Ming Li 241 Yi-Gang Li 335 Juan Li 579 Anders Lindvall 155 Xian Liu 745 Olfa Loukil 95 Ahmed Loukili 407 Ivan Luki 523 Karin Lundgren 231 Tang Luping 155 307 Ingemar Löfgren 155 231 609
Marie Malbois 325 Yann Malecot 125 Mirjana Malešev 523 Antonio Mari 145 Enrico Masoero 21 Benoit Masson 79 Ana Mafalda Matos 395 Thomas Matschei 463 W. John McCarter 307 Belkacem Menadi 777 Esperanza Menéndez 621 Arn Mignon 177 Shintaro Minoura 135 André Monteiro 195 Gábor Mucsi 415 Cecilie Myklebust Helle 29 Georges Nahas 385 Sreejith Nanukuttan 307 599 651 Phu Tho Nguyen 221 Xu-Jing Niu 335 Sandra Nunes 395 Ravi A. Patel 203 259 Gai-Fei Peng 335 Janez Perko 203 259 Frantisek Peterka 735 Bernhard Pichler 665 Christoph Pohl 115 Marc Quiertant 95 Miroslava Radeka 523 Vlastimir Radonjanin 523 Frédéric Raguenau 95 Regimantas Ramanauskas 269 279 Alex Remennikov 135 Encarnación Reyes 287 Desmond Robinson 599 Pierre Rossi 765 Emmanuel Rozière 407 651 Igor Rudenko 11 Sergio Ruiz 621 Samindi Samarakoon 29 Emre Sancak 443 Faez Sayahi 609 Tereza Sazavska 735 Dirk Schlicke XIII 49 249 563 651 Dalibor Sekulic 705 Alain Sellier 425 Tristan Senga Kiesse 533 Marijana Serdar 651 Mahmoud Shakouri 631 G Sherzer 789 Igor Shvab 21 Vit Smilauer 463 Ruben Snellings 317 Adrien Socie 325 Aleksandr Sokolov 279 François Soleilhet 675 Carlos Sousa 641 Radoslav Sovjak 473 Robert Spragg 211 Stéphanie Staquet 377 407 651
Jan Sælensminde 29 Tayfun Altu Söylev 187 Olli Saarela 165 Van Loc Ta 533 Jean-Louis Tailhan 765 Robert Teuber 39 Eckart Thoms 39 Qian Tian 241 Thomas Titscher 115 David Trejo 631 Laurent Trenty 95 Gregor Trtnik 651 Nguyen Viet Tue 563 Viktor Török 415 Neven Ukrainczyk 599 Jörg F. Unger 115 Koenraad Van Balen 317 573
Klaas Van Breugel 203 Céline Van Bunderen 317 Sandra Van Vlierberghe 177 Jos Vandekeybus 317 Lucie Vandewalle 317 Mariana Vasylchenko 725 Anne Ventura 533 Jolien Vermeulen 177 Clément Vert 483 Yujiang Wang 241 Ling Wang 579 Zhendi Wang 579 Ling Wang 695 Zhendi Wang 695 Tsutomu Watanabe 135 Jason Weiss 211 Walid Yahiaoui 777 Yan Yao 579 695 Guang Ye 203 355 745 789 T. Alper Y k c 453 Dongdong Zhang 69 Yi-Lin Zhao 335 Xiangming Zhou 685 Semion Zhutovsky 105 ükrü Özkan 443
Materials, Systems and Structures in Civil Engineering 2016 Service Life of Cement-Based Materials and Structures Vol. 1 Edited by Miguel Azenha, Ivan Gabrijel, Terje Kanstad, Dirk Schlicke and Ole Mejlhede Jensen RILEM Proceedings PRO 109 ISBN Vol. 1: 978-2-35158-170-4 ISBN Vol. 2: 978-2-35158-171-1 ISBN Vol. 1&2: 978-2-35158-172-8 e-ISBN: 978-2-35158-173-5 This volume contains the proceedings of the MSSCE 2016 conference segment on “Service Life of Cement-Based Materials and Structures”, which is organized by COST Action TU1404 (www.tu1404.eu). This COST Action is entitled: “Towards the next generation of standards for service life of cement-based materials and struc- tures”, dedicated to assist deepening knowledge regarding the service life behav- iour of cement-based materials and structures. The main purpose of this Action is to bring together relevant stakeholders (experimental and numerical researchers, standardization offices, manufacturers, designers, contractors, owners and authori- ties) in order to reflect today’s state of knowledge in new guidelines/recommen- dations, introduce new products and technologies to the market, and promote in- ternational and inter-speciality exchange of new information, creating avenues for new developments. The COST Action is basically divided in three main workgroups targeted to this purpose: WG1 – Testing of cement-based materials and RRT + WG 2 – Modelling and benchmarking WG 3 – Recommendations and products Also, two important instruments of the Action are now under way: the Extended Round Robin Testing Program (RRT + ), and the numerical benchmarking. The RRT + is
currently involving 43 laboratories. The present conference segment deals with a wide breadth of topics related to the service life of concrete, comprising aspects related to the 3 Workgroups mentioned above. The conference segment is attended by 80 presenters from university, indus- try and practice representing more than 30 different countries. All contributions have been peer reviewed. The event “Materials, Systems and Structures in Civil Engineering 2016”, 15-29 Au- gust 2016, Lyngby, Denmark, is scientifically sponsored by RILEM. The event is host- ed by the Department of Civil Engineering at the Technical University of Denmark and is financially sponsored by a number of independent foundations and organizations. RILEM Publications S.a.r.l. 157 rue des Blains, F-92220 Bagneux - FRANCE Tel: +33 1 45 36 10 20 Fax: +33 1 45 36 63 20 E-mail: dg@rilem.net Yüklə 8,6 Mb. Dostları ilə paylaş:
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