Screw piles are a popular foundation material. They are highly durable and capable of withstanding significant loads. However, like any metallic material, they are susceptible to damage. Protecting screw piles from corrosion is an important aspect that affects the service life of a screw pile foundation. In this article, we will discuss the causes of screw pile failure, types of corrosion, and methods of corrosion protection. Causes of Screw Pile Failure • Humidity. A humid environment accelerates the oxidation of metal surfaces. • Salt solutions. Soil containing salts destroys protective layers. • Soil acidity. Acidic soil accelerates rusting. • Stray currents. Electrical fields in the soil can cause electrochemical corrosion. • Mechanical damage. Piles can be damaged during installation or operation, compromising the protective layer and exposing the metal. • Chemical reactivity of the soil. Alkaline and acidic environments have a strong effect on metal. • Lack of tre...