Self-Compacting Concrete (SCC) as Standard Concrete
Project Leader
OUCHI Masahiro, Dr. Eng.
Professor, Infrastructure Systems Engineering

1. Objective
This project is aimed at mitigating the friction between solid particles in Self-Compacting Concrete(SCC) during deformation at the fresh stage so that SCC may be treated as a standard concrete. Thiscan be achieved by reducing the cement content per unit and increasing the aggregate content per unit
which also results in reducing the material cost.

SCC concrete compacts purely under its own weight

into every corner of a framework of reinforcing bars. There is no need for vibrating compaction. Thismethod was first developed by Hajime Okamura, professor at University of Tokyo and a former
president of Kochi University of Technology.

2. Project Outline
To achieve the above-mentioned aim of mitigating the friction between solid particles in SCC during
deformation at fresh stage, the project will consist of the following topics:
1) Entraining fine air bubbles as ball-bearings between solid particles (developed as “Air-enhanced
SCC (air-SCC) in 2015”)
2) Applying high molecular in order to mitigate friction in SCC
3) Combining fine air bubbles and high molecular in order to mitigate friction in SCC
4) Developing methods of testing the friction in SCC
5) Improving the manufacturing and construction systems for developing the SCC described above

3. Expected Performance
In this project, the successful candidate would be expected to:(a) Play a significant role in the research project: setting up a hypothesis and an experiment plan forverifying it(b) Take the initiative in the mixing and testing of mortar/concrete

4. Required Skills and Knowledge
The successful candidate for this project will have the following knowledge and skills:(a) A fundamental knowledge of concrete engineering(b) The knowledge and skills required for basic concrete testingReferences
1) Masahiro Ouchi, Puthipad Nipat, Anuwat Attachaiyawuth: Effects of fly ash, mixing procedure andtype of air-entraining agent on coalescene of entrained air bubbles in mortar of self-compacting
concrete at fresh stat Construction and Building Materials，Vol.80，pp.437-444, August, 2018.
2）Sovannsathya Rath, Masahiro Ouchi, Nipat Puthipad, Anuwat Attachaiyawuth: Improving thestability of entrained air in self-compacting concrete by optimizing the mix viscosity and airentraining agent dosage, Construction and Building Materials, Vol.148，pp.531-537, September,2017.
3) Nipat Puthipad ， Masahiro Ouchi ， Sovannsathya Rath, Anuwat Attachaiyawuth: Enhanced
entrainment of fine air bubbles in self-compacting concrete with high volume of fly ash using
defoaming agent for improved entrained air stability and higher aggregate content, Construction
and Building Materials, Vol.144，pp.1-12, July, 2017.
4) Sovannsathya Rath, Nipat Puthipad, Anuwat Attachaiyawuth, Masahiro Ouchi: Critical size ofentrained air to stability of air volume in mortar of self-compacting concrete at fresh stage, Journalof Advanced Concrete Technology, The Japan Concrete Institute, Vol.15, pp.29-37, January, 2017.
5) Masahiro Ouchi, Kenta Kameshima, Anuwat Attachaiyawuth: Improvement in self-compacting
properties of fresh concrete by eliminating large air bubbles using an antifoaming agent, Journalof Advanced Concrete Technology, The Japan Concrete Institute, Vol.15, pp.10-18, January, 2017.
6) Nipat Puthipad, Masahiro Ouchi, Sovannsathya Rath, Anuwat Attachaiyawuth: Enhancement inself-compactability and stability in volume of entrained air in self-compacting concrete with highvolume fly ash, Construction and Building Materials, Vol.128, pp.349-360, December, 2016.
7) Anuwat Attachaiyawuth, Sovannsathya Rath, Kazunori Tanaka, Masahiro Ouchi: Improvement ofself-comapctability of air-enhanced self-compacting concrete with finer entrained air, Journal ofAdvanced Concrete Technology, The Japan Concrete Institute, Vol.14, pp.55-69, March, 2016.

See my webpage:
http://www.infra.kochi-tech.ac.jp/m-ouchi/
See our admission guidelines:
https://www.kochi-tech.ac.jp/english/admission/ssp_aft19oct/ssp_application_guideline.html

Contact
E-mail: ouchi.masahiro@kochi-tech.ac.jp