Publications and Awards

<2017>

Yuya Sakai, Yuki Yokoyama and Toshiharu Kishi: Relationship among the permeation rate of water into concrete, the mix design, curing, and the degree of drying, Journal of Advanced Concrete Technology, Vol. 15, No. 10, pp. 595-602, 2017

Yuya Sakai: Understanding of deformation of crushed concrete particles under confining stress and its application for recycling technique,The Seventh Asia-Pacific Young Researchers and Graduates Symposium (YRGS2017), Tokyo, 2014 (CD-ROM)

Yuya Sakai, Yuki Yokoyama and Toshiharu Kishi: Non-destructive imaging of water permeation through cementitious materials using MRI, Open Journal of Civil Engineering, Vol. 7, pp. 378-388, 2017

Yuya Sakai: Numerical Study on the Relationship among Air Permeability, Pore Size and Pressure Assuming Molecular and Viscous Flows, Journal of Advanced Concrete Technology, Vol. 15, No. 3, pp. 103-109, 2017

Yuya Sakai and Toshiharu Kishi: Deformation mechanism of hardened cement paste and effect of water, Journal of Advanced Concrete Technology, Vol. 15, No. 1, pp. 19-28, 2017

Biruktawit Taye Tarekegne, Yuya Sakai and Toshiharu Kishi: Experimental study of the compressive strength and porosity of powder compacted concrete and sludge and cement paste, The 11th fib International PhD Symposium in Civil Engineering, 2017

<2016>

Yuya Sakai: Surface property of cement paste cured under high pressure evaluated using scanning probe microscopy, Open Journal of Civil Engineering, Vol. 6, pp. 643-652, 2016

Yuya Sakai and Toshiharu Kishi: Numerical simulation of air permeability in covercrete assuming molecular flow in circular tubes, Construction and Building Materials, Vol. 125, pp. 784-789, 2016

Yuya Sakai and Toshiharu Kishi: Wetting and drying cycles with NaCl solution in model microchannels to understand chloride ion transport in concrete, International Association for Life-Cycle Civil Engineering (IALCCE2016), Delft, The Netherlands, Oct. 16-19, pp. 873-878, 2016

Yuya Sakai, Tomohisa Kamada, and Toshiharu Kishi: Freezing damage mechanism in model microchannels and vacuum curing on cement paste to improve frost damage resistance, The 4th International Conference in Sustainable Construction Materials and Technologies (SCMT4), Las Vegas, USA, Aug. 7-11, 2016 (CD-ROM)

Yuya Sakai, Biruktawit Taye Tarekegne and Toshiharu Kishi: Recycling of hardened cementitious material by pressure and control of volumetric dhange, Journal of Advanced Concrete Technology, Vol. 14, No. 2 pp. 47-54, 2016

Yuya Sakai, Masao Nakatani, Akihiro Takeuchi, Yoji Omorai and Toshiharu Kishi: Mechanical behavior of cement paste and alterations of hydrates under high-pressure triaxial testing, Journal of Advanced Concrete Technology, Vol.14, No.1 pp. 1-12, 2016

<2015>

Yuya Sakai, Biruktawit Taye TAREKEGNE and Toshiharu Kishi:Complete recycle of waste concrete by compaction, International Conference on the Regeneration and Conservation of Concrete Structures, 2015

Biruktawit Taye TAREKEGNE, Yuya Sakai and Toshiharu Kishi:Utilization of compaction to recycle concrete with industrial waste materials, The Fifth International Conference on Construction Materials:Performance, Innovations and Structural Implications, pp. 1313-1322, 2015

Yuya Sakai, Choji Nakamura and Toshiharu Kishi:Chloride ion monitoring in etched nanochannels in glass using MQAE and development of microchannels in hardened cement paste, Nanotechnology in Construction, pp. 451-458, 2015

<2014>

Yuya Sakai and Toshiharu Kishi:Novel method for obtaining threshold pore size and observing 3D pore network in concrete, the Fourth International Symposium on Life-Cycle Civil Engineering, p.244, 2014

Hayato Ikoma, Toshiharu Kishi, Yuya Sakai and Muzafalu Kayondoa: Elucidation of rapid reduction of water flow through concrete crack regarded as self-healing phenomenon, Journal of Ceramic Processing Research. Vol. 16, Special. 1, pp. s22-s27,2015

Yuya Sakai and Toshiharu Kishi: Evaluation of threshold pore diameter of concrete using a novel method and non-destructive tests, The Sixth Asia-Pacific Young Researchers and Graduates Symposium (YRGS2014), Thailand, pp.134-138, 2014

Yuya Sakai, Choji Nakamura and Toshiharu Kishi: Threshold pore radius of concrete obtained with two novel methods, RILEM International workshop on performance-based specification and control of concrete durability, pp.109-116, 2014

<2013>

Yuya Sakai, Choji Nakamura and Toshiharu Kishi:Evaluation of mass transfer resistance of concrete based on representative pore size of permeation resistance, Construction & Building Materials, Vol.51, 31, pp.40-46, 2013

Yuya Sakai, Choji Nakamura and Toshiharu Kishi:Correlation between permeability of concrete and threshold pore size obtained with epoxy-coated sample, Journal of Advanced Concrete Technology, Vol.11, No.8, pp189-195, 2013

Yuya SAKAI, Choji NAKAMURA and Toshiharu KISHI:Evaluation of mass transfer resistance of concrete based on representative pore size of permeation resistance, The 3rd International Conference in Sustainable Construction Materials and Technologies (SCMT3), 2013

Yuya SAKAI, Choji NAKAMURA and Toshiharu KISHI:Relationship between threshold pore size and air permeability, water permeability, and gas permeation, EASEC13, 2013

Hikaru Ijima, Yuya SAKAI and Toshiharu KISHI:Mechanical performance of expansive concrete in uniaxial tension test with different cement type, age,and curing condition, EASEC13, 2013

<2012>

Yuya SAKAI, Choji NAKAMURA and Toshiharu KISHI, Tae Ho AHN:Interpretation of non-destructive test results for evaluation of mass transfer resistance of concrete members, the 5th International Conference of ACF, 2012

Choji NAKAMURA, Yuya SAKAI and Toshiharu KISHI:Study on the effects of chemical and physical properties of concrete on the behavior of internal water, Proceedings of 11th International Symposium on New Technology for Urban Safety of Mega Cities in Asia (USMCA), 2012

Yuya SAKAI and Toshiharu KISHI:Mechanism clarification and knowledge formation of unique behavior of chemically prestressed concrete for efficient use of expansive concrete, The 8th International Symposium on Social Management Systems (SSMS2012), 2012

<2011>

Kohei NAGAI, Taro UCHIMURA, Yuya SAKAI and Koichi MAEKAWA: Numerical simulation of press-in behavior in a heterogeneous field using aluminum rods layer by discrete analysis method, Press-In Engineering 2011, pp.32-45, 2011

Zhiahi Lin,岸利治,小菅望,酒井雄也:Cracking resistant performance of expansive concrete mixed with lightweight aggregate、日本コンクリート工学会高性能膨張コンクリートの性能評価とひび割れ制御システムに関する研究委員会シンポジウム論文集,363-368,2011

<2010>

Yuya SAKAI and Toshiharu KISHI:Numerical analytical discussion for practical application of ductile concrete with expansive additive,Proceedings of The 5th Civil Engineering Conference in the Asian Region 2010,2010

Yuya SAKAI and Toshiharu KISHI:Composite concept-based modeling of pre-yield, non-linear structural behavior of chemically prestressed member containing expansive additive,Proceedings of Symposium on Concrete Modelling (CONMOD 2010),pp.127-130,EPFL,Switzerland,2010

 

Research funds

- The Iron and Steel Institute of Japan, Research Support, JPY1,000,000, 2017-2019

- The Kazuchika Okura Memorial Foundation, Research Support, JPY1,000,000, 2017-2018

- Steel foundation for environmental protection technology, JPY1,000,000, 2017-2018

- Sumitomo Electric Group, Research Grant, JPY1,000,000, 2017-2018

- Institute of Industrial Science, the University of Tokyo, Grant for Selected Research, JPY4,000,000, 2017-2018

- Japan Concrete Institute, Research Grant, JPY1,000,000, 2017-2018

- Sekisui Chemical CO., LTD., Research Grant, JPY2,400,000, 2016-2017

- The Foundation for the Promotion of Industrial Science, Grant for Encouragement of Research, JPY2,000,000, 2016

- Steel foundation for environmental protection technology, JPY1,000,000, 2015-2016

- Institute of Industrial Science, the University of Tokyo, Grant for Encouragement of Research, JPY1,000,000, 2015-2016

- Kajima foundation, Overseas Travel Grant,JPY3,435,000, 2015-2016

- The Kazuchika Okura Memorial Foundation, Research Support, JPY1,000,000, 2014-2015

- LIXIL JS Foundation, Research Support, JPY1,000,000, 2014-2015

- JSPS KAKENHI, Grant-in-Aid for Challenging Exploratory Research, JPY3,640,000, Grant Number 26630201, 2014

- JSPS KAKENHI, Grant-in-Aid for Young Scientists (A), JPY22,620,000, Grant Number 24860019, 2013-2014

- JSPS KAKENHI, Grant-in-Aid for Challenging Exploratory Research, JPY3,120,000, Grant Number 25630183, 2013

- Japan Cement Association, Grant for Encouragement of Research, JPY1,000,000, 2013

- Express Highway Research Foundation of Japan, Grant for Encouragement of Research, JPY1,500,000, 2013

- Institute of Industrial Science, the University of Tokyo, Grant for Encouragement of Research, JPY1,000,000, 2012

- Global COE Program, Grant for Encouragement of Research, JPY500,000, 2012

- JSPS KAKENHI, Grant-in-Aid for Research Activity Start-up, JPY2,990,000, Grant Number 24860019, 2012

 

 

Awards

-Best young researcher award, International Conference on the Regeneration and Conservation of Concrete Structures, 2015

-Japan Cement Association, 68th Annual Convention, Best Presentation Award, 2014

-Japan Cement Association, Best Paper Award, 2013 

-Japan Cement Association, 67th Annual Convention, Best Presentation Award, 2013

-Japan Cement Association, 66th Annual Convention, Best Presentation Award, 2012

-Japan Society of Civil Engineers, 66th Annual Convention, Best Presentation Award, 2012

-Global COE Program, Young Researcher Award, 2011 

-Japan Society of Civil Engineers, 65th Annual Convention, Best Presentation Award, 2011

-Japan Concrete Institute, 32nd Annual Convention, Paper Encouragement Award, 2010 

-Japan Concrete Institute, 31st Annual Convention, Paper Encouragement Award, 2009 

-Japan Society of Civil Engineers, Yoshida Research Encouragement Award, 2009