Engineering Commons^™

Prediction On Service Life Of Concrete Pipeline Buried In Chlorinated Environment Under Nonuniformly Distributed Earth Pressure, Lin Li, Weibing Gong, Jingpei Li

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

This paper proposes an analytical model to estimate the service life of concrete pipelines buried in chloride contaminated soils, which properly considers the effects of nonuniformly distributed earth pressures on both the internal tensile stress of concrete protective cover and the chloride diffusion coefficient through the nonhomogeneous coefficient of earth pressure. It is assumed that the underground concrete pipeline arrives at the service life end when cracking induced by expansion pressure due to the corrosion products occurs in the concrete protective cover. Hence, the whole service life of underground concrete pipeline is composed of chloride diffusion period and protective cover …