鉄筋・セメントモルタル内の溶断時の温度分布について

複合材料の溶断に関する研究 (第1報)

抄録

In this paper, by the finite difference method, the authors considered the two-dimensional-temperature field that consists of cement mortar and a steel rod embedded in the mortar in case that the moving heat source (plasma jet) cuts the field perpendicularly to the steel rod.
The main results obtained are as follows:
(1) Since the thermal diffusivity of steel is much greater than that of cement mortar, the steel rod serves as a heat sinkf or the cement mortar in the high temperature region and as a heat source in the low temperature region.
(2) Whether moving speed of heat source decreases or supplying energy increases, the melted width increases and the steel rod more protrudes from the melted surface of the cement mortar.
(3) The calculated values approximately agree with the experimental values when they are compared to the maximum temperature of the experimental values.