BDC Poland
BDC Poland
BDC Poland
BDC Poland
BDC Poland
BDC Poland
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Bentonite CSR

Use

Use in cement bentonite sealing walls. For optimal efficiency the mixing water of the suspension should have the following properties:
Conductivity   ≤ 1000 µS/cm
pH    4,5 – 9,0

Description

The basis for this cement-stable bentonite quality is a specially selected, activated sodium bentonite.

Advantages

  • Provides good trench stabilising properties during excavation phase.
  • Prevents slumping of cement and soil particles during curing phase.
  • Increases the water inhibiting properties of the wall.
  • Increases the remodelling ability of the wall.

Specification

Bentonite CSR complies with the requirements set for bentonite in CUR publication 189.

Parameter Method Requirement Typical Value
Water absorption capacity after 24 hours ASTM E946-92 ≥ 500 % 780 %
Methylene blue absorption Test B CUR 33 ≥ 220 mg MB/gram 300 mg MB/gram
Dry sieve analysis through 125 mµ Draft NEN 33976 ≥ 95 % 98 %
Cement stability Test III CUR 189 Water separation after 2 hours ≤ 2.5 % (v/v) 1 %
2 %
Moisture content DIN 18121 ≤ 13,0 % 11,5 %

Chemical and physical properties

Composition High-quality sodium activated bentonite
Colour Beige
Form Soft powder

Properties of the suspension

Bentonite CSR mixed with distilled water in various concentrations.

Parameter Method 30 kg/m3 40 kg/m3 50 kg/m3 60 kg/m3
Liquid limit ball number KugelharfengerätDIN 4126 1 1 2 3
Density Mud balance 1,02 g/ml 1,03 g/ml 1,03 g/ml 1,04 g/ml
Filtrate water loss DIN 4127 11,0 ml 9,0 ml 8,5 ml 8,0 ml
Marsh funnel API API 13B Section 2 31 s 32 s 34 s 37 s

Packaging

  • 1000 kg packed in 25 kg bags on a pallet with shrink film
  • bulk
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