In-situ Monitoring Moisture Transport in Concrete Using Automatic Humidity Recorder

Almost all the deterioration of concrete structures is related to moisture transport, which is a key issue for concrete structures durability. In this study, the process of moisture transport in concrete was monitored in situ using automatic humidity recorder. As an important parameter to evaluate and quantify the durability of concrete, the penetration coefficient was obtained based on the evolution of relative humidity at different position. The effects of water to cement ratio and sample condition on the penetration coefficient were investigated systematically. It aims to provide a new approach for the measurement of penetration coefficient and offer some parameters for evaluating and quantifying the durability of concrete.