Hokkaido University · Engineering
Professor Kiyofumi Kurumisawa's research lab specializes in the development and performance evaluation of sustainable cementitious materials, with a strong focus on alkali-activated materials (AAMs) and their durability. The lab investigates fresh and hardened properties of AAMs, including workability, drying shrinkage, and transport properties such as chloride diffusion and porosity. Using advanced experimental techniques and predictive modeling—particularly artificial neural networks—the lab aims to optimize mix designs for long-term performance and environmental sustainability. The research also extends to cement-based materials for radioactive waste containment, examining their behavior under leaching conditions and long-term stability in groundwater environments.
Figures are computed from collected data and may differ slightly.
Alkali-activated materials (AAMs) are qualitatively and quantitatively evaluated with an emphasis on the ultimate drying shrinkage. We systematically evaluated AAMs based on the mix design and curing conditions, utilizing a total of 452 AAM mixtures extracted from 44 papers. Finally, a predictive model for the ultimate drying shrinkage of AAMs was constructed using an artificial neural network (ANN) with high accuracy, in which the reactivity of binder, geopolymer paste volume, liquid-to-binder
Alkali-activated materials (AAMs) have been extensively studied for their superior performance and eco-friendliness. While previous researches have primarily focused on the hardened properties of AAMs, the assessment of their fresh properties has often been overlooked. The preparation process of AAMs involves key factors in mix design that significantly impact their workability. This study comprehensively evaluates the workability of different types of AAMs, analyzing a total of 402 mixtures ext
The transport properties of hardened cement paste (HCP) have been investigated in many studies; the AC impedance method (ACI) is a non-destructive technique employed for this purpose and has been used in investigations of the elec-trical characteristic and mass transport properties of HCP. However, there are relatively fewer studies investigating chloride ingress in HCP and using the ACI. In this study, the relationship between the electrical conductivity measured by the ACI and chloride ingress
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