Safety Issues Posed by Shotcreting Technique Used in Construction Works

Ms Tin Pei Ling asked the Minister for National Development whether shotcreting in construction works poses safety issues, such as exacerbating the possibility of landslides, and whether local construction works employ such a technique.

Mr Khaw Boon Wan: Shotcreting, or sprayed concrete, is a process in placing concrete through a hose nozzle onto a surface. It is used locally and overseas for tunnel and retaining wall construction and for enhancing the stability of earth slopes. It is a safe and tested process as it provides a quick stabilising and supporting system which prevents erosion.

Examples of local projects which used shotcreting include Fort Canning Road Tunnel, Jurong Rock Caverns, Downtown Line 2 MRT Tunnel at Little India station and earth slopes at Jalan Dermawan and Parbury Avenue.