Safety & Disaster Prevention:Concrete

Associate Professor:
Atsushi UENO

Associate Professor:
Kentaro OHNO

Research Interests

In our laboratory, research targets are several characteristics of concrete, which is one of the main materials for constructions. By considering its characteristics, such as cements, aggregates, admixtures and so on, we are investigating technical methods for the quality and durability improvement on concrete. In addition, the utilization of resources, taking into account environmental conservation and harmonization is also our important issue based on the social trend. The basic study on how to reuse slags, which is the industrial by-products from steel industry, as the alternatives for aggregates or cements, and the quality evaluation on the fly ash, generated from coal-fired power plants and used as the cement substitute are some of our efforts.

Furthermore, we are conducting the research on the Eco-cement including incinerated city wastes as a raw material. Now, the society is shifting to maintenance and sustainable systems. Our mission is to build high quality structures, to lengthen their lives and to use them as long as we can. Evaluating various factors that effect on structure’s durability are necessary for maintenance management for existing structures and rational planning on new constructions. Under these backgrounds, we are investigating evaluation methods for the durability on concrete in terms of cement chemistry and studying on repairing and restrengthening techniques for existing concrete structures. In addition, we are also studying on detection and evaluation methods for damage and defect in concrete by non-destructive evaluation techniques (NDT) such as impact elastic wave method and acoustic emission (AE).

Titles of master theses and doctoral dissertations

20181.Influence of water spraying during steam curing on pore structure of concrete for precast concrete products
2.Applicability of extremely dry concrete consisting eco-cement and recycled aggregates for pavements
3.Influence of properties of jointing surface on shear bond strength between existing concrete and repairing mortar
4.Analytical investigation on flowing behavior of grouting mortar
20171.Influence of acceleration distribution during vibration on compactibility and qualities of cover concrete
2.Influence of setting behavior of cementitious materials and thermal history on strength development and pore structure of mortar
3.Evaluation of share crack development of RC-deck strengthening with steel plate by elastic wave method
20161.Evaluation method for deterioration of structural concrete of BAC-tank in advanced water treatment facilities
2.Evaluation of passing ability of concrete between rebars during vibrating compaction based on acceleration distribution
3.Improvement of thermal properties in summer season of side walk pavement block by two sides surface
4.Evaluation of progression of deterioration of RC-deck concrete strengthening by steel plate

Titles of bachelor theses

20181.Evaluation of quality of cover concrete with compaction of concrete
2.Study on stress in concrete using different direction ultrasonic velocity variations
3.Influence of hydration-accelerating admixtures on setting and properties of hardened mortar
4.Fundamental study on relationship between properties of organic short fibers and desperation in cement paste
20171.Experimental study on evaluation of fluidity and segregation resistance of grouting mortar
2.Influence of blast-furnace slag powder having different specific surface area on mechanical properties and pore structure of steam cured concrete
3.Evaluation method for dispersion property of organic short fiber in concrete
4.Basic study on relationship between ultrasonic verlosity variation and applied stress in concrete
20161.Evaluation of filling-ability of grouting mortar based on plastic viscosity
2.Suitability of base porous concrete for coral breeding
3.Properties of extremely dry concrete using eco-cement and recycled aggregates
4.Estimation of deteriorated area of fire damaged concrete by impact elastic wave method