Project Location: Reading Sewage Treatment Works

Posted on in the category Concrete Repair, Utilities, New Build Construction.

Waterproofing of Tie Holes on Reinforced Concrete Digester Tanks

Waterproof Sealing of Tie Holes on Egg-Shaped Reinforced Concrete Digester Tanks


Designed in compliance with the latest EU standards on effluent and sludge treatment and built at a cost of £80 million, the new Reading Sewage Treatment Works is one of the most advanced facilities of its kind in Britain.

The cast in-situ egg-shaped, reinforced concrete anaerobic digesters are the first of their type to be built in the UK. On stripping the forms, a series of cone shaped voids are left from the support ties, which require sealing to ensure a watertight structure is achieved.

The Solution

Effective waterproofing and sealing of the tie holes involved in excess of 13,000 kg of Tiefill. An advanced Portland cement-based mortar formulation which is factory batched and supplied in convenient packs, Tiefill is supplied with a measuring kit for accurate proportioning on site. Simply mixed with clean water, Tiefill blends to a smooth consistency which is easy to finish with a trowel. Tiefill is waterproof when tested under a 10 bar pressure, and it also benefits from WRAS approval for use in the clean water industry.


Thames Water


Taylor Woodrow