Vacuum preloading solution to shorten consolidation time of weak soil foundations under structures

Abstract

DOI: https://doi.org/10.66195/mtu.2025.15.131

This paper presents the mechanism, technical development, and practical applications of the vacuum preloading method in treating weak soil foundations. This method allows accelerating the consolidation process, significantly shortening construction time compared to traditional preloading. Studies and applications in many countries, including Vietnam, demonstrate the superior effectiveness of this technology. The paper also introduces recent improvements, including membrane-less techniques, combination of vacuum preloading with static loads, and numerical analysis applications.