Composite wall panel

A composite wall panel, comprising:

• a panel frame comprising
• a first planar concrete block,
• a second planar concrete block that is disposed substantially parallel to the first planar concrete block, and
• a first spacer and a second spacer, wherein the first and the second spacers are oriented axially with a long dimension of the first and the second planar concrete blocks and between the first and the second planar concrete blocks to form a cavity in the panel frame;
• and
• an insulating layer disposed in the cavity, wherein the insulating layer is formed from a concrete mixture that comprises
• 45-55 wt % of cement,
• 30-35 wt % of an aggregate,
• 0.5-2.5 wt % of expanded polystyrene beads,
• 0.5-5.0 wt % of a foam cement,
• 12-18 wt % of water, and
• 0.1-0.5 wt % of a superplasticizer, relative to the total weight of the insulating layer.