Updated: January 28, 2026

Ir. Lei Chang is the Chairman of Shenzhen Houkun Soft Rock Technology Co., Ltd. and a Senior Engineer (Geotechnical Engineering). He is a National Class I Registered Construction Engineer and a leading specialist in deep and soft ground improvement. Ir. Chang currently serves as Vice President of the Shenzhen Zhejiang University Alumni Association, a Council Member of the Geotechnical Stabilization and Solidification Technology Committee, a Member of the National Academic Committee on Ground Improvement, and a Technical Committee Member of both the China Deep Foundation Engineering Development Forum and the China International Pile and Deep Foundation Summit. He is also an active member of several professional bodies, including the China Construction Industry Association, the Guangdong Civil Engineering and Architecture Society, the Guangdong Highway Society, the Guangdong Society for Geotechnical Mechanics and Engineering, the Shenzhen Expert Committee, and the Geotechnical Foundation and Structural Engineering Committee. Since 2003, he has been continuously engaged in lectures, research, technology development, consultancy, and construction practice in deep and soft ground improvement engineering.

His presentation is structured into six sections: 1) Why stabilization is necessary? 2) Rigid–flexible composite thick-shell layer, 3) What is the core of stabilization technology? 4) Research and application of inorganic high-bonding cementitious materials, 5) Engineering applications of rigid–flexible composite thick-shell composite foundations, and 6) Research and applications of integrated vegetation and stabilization technologies for aeolian sand control. This work effectively resolves the challenges of stabilizing marine tidal-flat sludge with high water content, salinity, and organic matter in a cost-effective manner. It also overcomes the long-term inefficiency of combined sand control and vegetation restoration measures and mitigates excessive and differential settlement and associated risks such as displacement, landslides, and collapse in deep soft-ground engineering.