IBECO HT-Xi is a high quality sodium activated bentonite designed to meet the requirements of civil engineering applications, especially for underground works where groundwater pressure is high.

Rheological Properties of bentonite slurry 24 hours after mixing.

IBECO HT-Xi Concentration kg/m3 50
Marsh Funnel Viscosity s/l 45
Filtrate Volume (7.5min@7bar) ml 10
Slurry pH 10,5

Technical Characteristics

Typical Technical Characteristics
Moisture Content 13%
Dry Fines passing 75 microns 75%
Wet Screen Retention 75 microns 3%


  • High Cuttings Suspension Capability
  • Low Depth of Slurry Penetration
  • Fast development of Rheological Properties (Hydration)
  • Advanced Lubrication ability
  • Creation of Thin Filtrate Cake with Low Permeability
  • High Water Absorption

Recommended Applications

  • Diaphragm and Cut-Off Walls
  • Slurry Shield Tunnelling
  • Vertical Drilling

Delivery and Storage

  • In 25kg bags
  • In 1 tonne big-bags
  • Store in dry/aerated space


  • Mix with good quality water
  • Use high shear mixers
  • Allow adequate time for hydration


The listed technical values and product specifications are indicative and relied on tests performed under laboratory conditions, using distilled water. The information above should not be construed as a promise or guarantee of the product’s properties, which is derived from natural materials whose initial properties can vary depending on several factors. Mixing water quality and purity also significantly affects the slurry’s properties and performance. The information above does not release customers from any obligation to per form their own tests and it is recommended that any decisions regarding the use of our products is based on the results of such tests.