モルタル・コンクリートの硬化過程における熱伝導性状

概要

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The purpose of this study is to clarify the thermal properties of fresh mortar and fresh concrete. To reveral these properties, time-dependent thermal constants of mortar and concrete in hardening process, such as thermal conductivity and thermal diffusivity are investigated by experiments. Heat fluxes and temperature distributions in specimen are measured at 1-minute intervals. On the basis of this experiment, thermal conductivity and thermal diffusivity are calculated from steady-state solution of temperature distribution and from transient solution, respectively. The conclusions are obtained as follows : (1) Thermal conductivity and thermal diffusivity slightly increase during the age of 3 days and specific heat, on the contrary, shows the tendency of decreasing. They reach to almost constant value after the age of 3〜6 days. (2) Time-dependent thermal properties of mortar and concrete are described as the average of the products between thermal constants of component materials and concentration of the materials in each age.
社団法人日本建築学会の論文
1976-03-30