Magnetizable concrete composite for road-embedded wireless power transfer

A method for making a magnetizable concrete wireless power transfer pad, the method comprising:

• pouring a base comprising a magnetizable base concrete including concrete and first magnetizable particles, the first magnetizable particles having a magnetic permeability and a magnetic saturation;
• pouring a pillar extending up from and centered over the base within an inductive coil gap and having a width smaller than a width of the base, the pillar comprising a magnetizable pillar concrete including concrete and second magnetizable particles, the second magnetizable particles having a magnetic permeability and a magnetic saturation such that the base and the pillar collectively shape an external magnetic field produced by an inductive coil to reduce power and to increase inductance;
• positioning the inductive coil adjacent and centered over the base, the inductive coil forming the inductive coil gap at its center inner perimeter between a conductive wire that form the inductive coil, the inductive coil having an outer perimeter, a lateral width, and a longitudinal length;
• and
• pouring a support concrete above the inductive coil to form an upper road surface and optionally below and surrounding the base.