More Uses for Gravel (Concrete+More)

I what gravel to be more useful, So here are Ideas

• Concrete: Made from Gravel and a small amount of Magnesium. Can be used both to create stone-like voxels using a Cement Gun and as a armor block in the form of Reinforced Concrete (concrete and girders) [Concrete Blocks would be very strong but also VERY heavy.]
• Fuel Rods: Reactors would now take "fuel rods" which are made from Uranium, Gravel, and Small Steel Tubes. They last longer and produce "depleted uranium" as a byproduct that would replace Uranium in Railgun & Artillery ammo. (Optional) Prototech Thruster could also use them as fuel, switching from a Ion to and Nuclear Thruster (no atmo performance decrease)
• Reinforced Ceramics: Mix of Gravel and Silicon, "Reinforced Ceramics" would be a new component used in the construction of Hydrogen Thrusters, Ablative Armor (alternative to Armor Panels that are stronger & lighter, but can be repaired or salvaged), a new Laser PDT.
• PDC Rounds: Cheap but weak Gatling ammo made of Gravel (40kg) & Iron (5kg) Magnesium Powder (3kg). Best used for shooting down missiles and small targets.
  
• Misc: To represent the use of industrial ceramics/carbon/trace minerals, replace iron with gravel in Computers, Display, and Superconductor. Also add Gravel to Construction Component, Medical Components, Motors.