HDPE Lined RCC Pipes

T Grip Lining Requirement And Need

Concrete is attacked by Acids and Alkaline. The powerful inorganic sulphuric acid reacts with hydrated calcium silicates and lime in the cement structure & reduces it to a soft swelling paste. Hydrogen sulphide attack in sewer pipes is a major problem, but also the presence of sulphates and chlorides in soils creates aggressive saline conditions that pose a threat to concrete resulting in:

  • Decreased Flow of Sewerage
  • Reduced Structure strength, increased failures
  • High Maintenance costs
  • Need for newer lines, increased life costs


T- Lining is a flexible sheet liner which is flat on one side, whilst the reverse side is provided with parallel T-Shaped ribs with locking extensions. T-Lining’s projection, moulded-in T-ribs are designed to allow concrete to flow around them during casting and is then vibrated to ensure a dense, void-free structure with the HDPE lining secured to its face, permanently locking the liner into place as an integral part of the concrete substrate thus isolating the concrete from the harmful effects of corrosive chemicals for long periods of time that can be measured in decades.

T Grip Lining Advantages

  • Excellent resistance to a broad range of highly corrosive chemicals, gases such as hydrogen sulphide, acids, alkalis, and highly offensive salts.
  • Strong sanitary bacteria and ever-growing fungus do not affect the T-Lining.
  • Highly effective resistance to gas penetration.
  • Unaffected by continuous exposure to high humidity and water.
  • Permanent bonding to concrete substrates prevents delamination due to high groundwater back pressure
  • It will also withstand continuous immersion in certain chemical solutions at temperatures as high as 100º C.