It wouldn't work well: Coefficients of thermal expansion: Nylon: Typically ranges from 80-100 x 10^-6 per °C Steel rebar: Typically around 11-13 x 10^-6 per °C Comparison: The coefficient of thermal expansion for nylon is significantly higher than that of steel rebar - about 6-9 times greater. This means nylon expands and contracts much more with temperature changes compared to steel. That's not even taking into consideration the tensile strength of nylon and steel. But an interesting thought, for sure.