Grout Bag Installation — Reinstating Seawall Toe Structures

What is Grout Bag Installation?

KCC installs pre-formed grout bags to fill scour voids and reinstate seawall toe structures. Grout bags are placed by divers and pumped with cementitious grout to fill voids and provide a stable foundation for the seawall toe. This method is widely used by CEDD and DSD for seawall maintenance works.

What's Included

Diver survey to map scour void extent and determine grout bag layout
Placement of pre-formed grout bags by diver to fill void
Pumping of cementitious grout to fill bags and consolidate void
Diver inspection to confirm grout bag placement and void filling
Post-works survey to confirm seawall toe reinstatement

Why This Matters

Scour voids beneath seawall toe structures remove the foundation support for the seawall face — and if left unaddressed, can lead to progressive settlement and structural failure. Grout bag installation is a proven, cost-effective method for reinstating toe structures and preventing further deterioration.

Related Services in Seawall Repair & Scour Protection

Rock Armour Placement

Underwater placement of rock armour and armour stone to protect seawall toes and coastal structures.

Concrete Block Revetment

Installation and reinstatement of concrete block revetment systems on seawall faces.

Scour Monitoring

Periodic survey and monitoring of scour development at bridge piers, piles, and marine structures.

Part of

Marine Construction

KCC delivers specialist marine construction works across Hong Kong and the region — from seawall rep

View all Marine Construction services

IMCA ADCI HSE HKCP

IMCA · ADCI · HSE · HKCP Compliant

All diving operations conducted to IMCA, ADCI, HSE & HKCP standards

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