Research Brief: Capillary Stress During Cement Drying Shrinkage

Image from Research Brief: Capillary Stress During Cement Drying Shrinkage
June 5, 2018

Cement paste is quite porous. When there are changes to outside relative humidity, due to rain or dry conditions, the pores inside cement can be filled with water or become empty, generating high stresses as the pores expand (when very wet) and shrink (when dry), which in turn affects the properties of the material. This research brief presents proposes a framework for calculating the consequences of these stresses and explain the cement drying shrinkage curve based on a model of the pore structure. Read the brief.