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Bentonite for waterproof and leak-proof

Bentonite for waterproof and anti-seepage is an ideal waterproof and impermeable material made by using bentonite, a rare non-metallic mineral resource in China, as the main raw material, and refined and processed by special production processes such as mineral processing, sodification, drying and grinding. The appearance is gray-white or yellow powder, mainly used as waterproof and impermeable materials for various engineering foundations. Compared with similar products, bentonite for waterproof and seepage prevention has the characteristics of good water absorption, high expansion rate and strong water insulation effect, and it is a new waterproof material product with good leakage prevention performance and low price.


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Bentonite is a natural mineral soil, the main component of which is montmorillonite-based clay minerals. It is volcanic ash produced by volcanic eruptions, and bentonite deposits are formed after temperature, pressure and metamorphic time. The types of bentonite are mainly divided into sodium-based bentonite and calcium-based bentonite. Among them, high-quality sodium-based bentonite has three characteristics: high swelling, low water permeability and self-healing function, so it is widely used in various anti-seepage fields.

Application

Waterproof and impermeable bentonite clay is suitable for landfill seepage prevention, riverside dike waterproofing, pond laying water barrier, railway station engineering seepage prevention and foundation waterproof and seepage prevention of various buildings.

Product performance:
(1) High expansion: bentonite expands at least 12 times after contact with water, reaching 25 times that of ASTM D5890.
(2) Low water permeability: The water permeability is only 5 X 10-9cm/sec, which meets the ASTM D 5887 standard.
(3) Self-healing function: bentonite will become a gel when exposed to water, and can fill cracks and gaps. The overlap method is a direct overlap and therefore resistant to uneven geological settlement. It has high cost performance and can be widely used in various waterproof and anti-seepage projects.
The waterproof, impermeable special bentonite produced by Hebei Yiheng Technology Co., Ltd. strictly implements the national standard of the People's Republic of China G B/T 20973--2007 and manufactures.

Technical indicators

  • Expansion factor ml/g: 38
  • Heat resistance 0C: 500
  • Gumseed price ml/15g: 100
  • Fineness-200 mesh %: 95
  • Moisture/%(m/m): 11.0
  • The amount of orchid absorption: ≥ 35g/100g soil
  • Expansion factor ml/g: ≥30ml/2g
  • Viscosity 600 rpm: ≥35
  • Water absorption%: ≥580
  • Particle size: 200 mesh %: ≥80
  • Moisture/%(m/m): ≤12
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