Your gravel runway is essentially flexible pavement with a surface of coarse unbound granular material. The most common operational problems from gravel runways result from the shear failure of the surface rutting caused by excessive aircraft tire loading.
Gravel surfaces are susceptible to weakening from moisture penetration and frost action. This loose material causes dust and an unstable surface resulting in the requirement to protect the aircraft from debris. The rough textures of gravel surfaces also contribute to increased tire wear.
A principle component of dust control and stabilization on a gravel runway is an increase in CBR (California Bearing Ratio). The increase in CBR will provide aircraft with safer operation by reducing gravel spray, rolling resistance, and take-off and landing distances. The improved CBR will also reduce maintenance requirements of your runway.
To learn more information about how Midwest can increase the CBR of your gravel runway or for a detailed analysis, call Robert Vitale toll free at 1-866-662-3878 or 330-456-3121. You can also email bob.vitale@midwestind.com.