Schaef,
Most thermoplastics require primers to be applied on concrete prior to the material. Also know that concrete will not hold the temps between heating and applying (during the surface preheating stage) thus smaller increments of material or higher temps may be necessary. BUT….. be careful of “spalling”created when sight moisture is present in the concrete and the concrete pops a chip out due to excessive heating.
Good luck and feel free to post further questions. I will be monitoring the site a bit.
Greg
