LIME KILN DUST
Specifications for Road Stabilization
- For either high calcium or dolomitic hydrated lime, a minimum of 95% total oxide content (CaO + MgO) on a non-volatile basis is required.
- Carbon Dioxide (5 – 7% maximum, depending upon where sampled.
- Particle Size – 85% passing #200 mesh sieve.
Every stabilization job does not need to use a State specification material. Successful stabilization has been accomplished utilizing dry flue (kiln) dust from our plant air pollution control. This flue dust contains 20 – 50% of calcium oxide, plus fly ash. Depending upon the amount of calcium hydroxide the soil requires, increasing the tonnage to compensate for the lower availability of lime in the flue dust will give the same results.
SOME CEMENT KILN DUST IS OBTAINED FROM KILNS THAT ARE BURNING HAZARDOUS WASTE. ALSO, SOME FLY-ASH IS VERY HIGH IN ARSENIC!!!!