Building Materials Lab.

Department of Architectural Design and Engineering

Japanese

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　Experimental study on rheological properties of fresh concrete

       by using stress-controlled rheometer and rate-controlled stress growth rheometer　　

　Rheological models of fresh concrete under static stress and vibration

       by microscopic approach - considering fresh concrete as a granular fluid with particle contacts and inter-particle friction

　Development of rheometer

       For measuring the shear deformation behavior before yielding and the shear flow behavior after yielding under different external pressure

　Numerical simulation technology for fresh concrete

       Analysis methods of flow and segregation simulation, opening flow simulation, and pump flow simulation;    

       Numerical approach to thixotropic behavior 

       by MPS, SPH, DEM

　 LCIA methodology and tool for buildings 

         Assessment for Regional and global environmental impact, direct and indirect (caused by infrastructure serving the building)   

          environmental impacts

　 Environmental performance (EP) of concrete and assessment methodology

　　  EP Indicator = Integrated technical properties (strength, workability and durability, etc.)/Integrated environmental impact (social cost ) per year during life span

         Eco-ranking methodology of concrete

　　 Database of environmental burden and impact of raw materials of cement & concrete

　 Environment-conscious mix design method and computer-aided design support tool for concrete

        Minimize environmental impact while satisfying technical performances.

　 Evaluation of deterioration based on the measurement of thermal conductivity

　  Self-recovery of performances &  Influencing factors of recovery degree 

      Re-curing method and period, cooing method, strength level before heating, addition of mineral admixtures, etc.

　 Development of injection materials for performance recovery

　Properties of concrete with multi-kinds of slag in place of natural aggregates

　Alkali-activated materials /Geopolymer

      Chemical admixtures: retarder and shrinkage reducer; Setting retarding method of slag pre-treatment; Clarification of properties of 

      fly ash/slag-based geopolymer; Improvement technology of geopolymer durability; New fillers used for geopolymer

  CO₂-foamed concrete; Using CO₂-absobing raw materials in concrete