I watched a video, in which a man shows how to make something that looks like a rebar out of PET bottle strips. This made me wonder: can something like this be used to reinforce concrete when constructing buildings?
The Wikipedia article about rebars only mentions fibre-reinforced plastic rebars, but I am wondering about rebars made purely from PET. I tried to find reasons why PET can't be used.
According to this article, coefficient of thermal expansion of concrete ranges from 7 to 13 x 10^-6/°C, and according to this document, coefficient of thermal expansion of PET ranges from 20 to 80 x 10^-6/°C, so there is going to be more differential stress than with steel.
Making rebars the way that was shown in the video would also be very labor intensive.
Are there any other reasons why PET can't be used to make rebars?