RawEnergyMaterials Corp

“RockRebar tm.” was released after ACI 440.6-08 was published so basalt was not specifically mentioned. ASTM testing of “RockRebartm” indicates the materials easily meet ACI minimum performance requirements.  RR physicals fall between fiberglass and carbon at a sales price slightly more than fiberglass. And less than that of epoxy coated steel and a fraction of the price of carbon.

 The specifications of “RockRebartm” rods change as the diameter goes up, with smaller-diameter rods generally having higher tensile strength in modulus.  Typical examples are shown below.  Contact RawEnergyMaterials corp. for specific specifications of rods from 4 mm to 25 mm diameters.

Glass transition temperature of our preparatory adhesive matrix 246C 475F

Linear expansion coefficient

 10^-6/°C= 7 10^-6/°F=3.7

 (note: always less than concrete, steel always has more expansion than concrete)

Average tensile strength of our continuous basalt fiber 4650 MPa 675500psi

Average Elastic Modulus 103 GPA 15000000 psi

Field Handling Considerations

1. Unrolling “RockRebartm” coils.  Substantial kinetic energy is stored during the coiling process.  Care must be exercised when uncoiling to prevent tangling and uncontrolled movement of ends. Coils are shipped with U clamps to allow uncoiling from the inside of the coil for safety reasons.

2. Cutting in the field.   Bolt cutters are not recommended because they dull quickly and break themselves resulting in shattered steel.  Cable cutters do work well on sizes 12mm and smaller, however frequent sharpening is required. Hacksaws or abrasive wheels will work. The best choice is an inexpensive, 4” battery circular saw with common inexpensive diamond tile blade. They last a long time for the money.  Bulk cuts may be done with chop saw, or gas saw with a masonry blade, but wet saw is preferred.