Hermano Civil Engineering Sodium Bentonite is a natural fine-powder sodium bentonite for dam sealing, pond lining, canal sealing and compacted soil waterproofing.
When blended with suitable local soil and compacted under the correct moisture conditions, it absorbs water and swells to help form a dense, low-permeability barrier.
Grade selection, mixing ratio and layer design should be confirmed against the local soil, project specification and required permeability. TDS, COA, SDS/MSDS and evaluation samples are available upon request.
Civil Engineering Sodium Bentonite is supplied as a natural fine powder for seepage control and soil sealing applications. It is intended for projects where bentonite is blended with suitable soil, hydrated and compacted to improve water retention and reduce seepage through earthwork structures.
The product can be evaluated for dam and embankment sealing, reservoir and pond lining, canal and irrigation-channel sealing, compacted waterproofing layers, and environmental containment projects. Its performance depends on the complete soil-bentonite system, not on the bentonite alone.
For this reason, suitability should be reviewed together with local soil type, particle-size distribution, mixing method, moisture control, compaction conditions, water chemistry and the target permeability of the project.
Application note: final design should follow the project specification and the recommendations of the responsible engineer. Laboratory or field evaluation with representative soil is recommended before full-scale construction.
Sodium bentonite absorbs water and swells when hydrated. In a suitable soil system, this swelling behaviour can help fill voids and reduce connected flow paths within the compacted layer.
The fine-powder form is designed to support blending with local soil. Uniform mixing helps distribute the bentonite through the sealing layer and supports consistent hydration.
When the soil-bentonite mixture is placed at the correct moisture content and compacted properly, it can help form a dense barrier for seepage control. The actual permeability depends on the mix design, soil properties and construction quality.
Water chemistry, soil mineralogy, bentonite dosage, mixing energy, layer thickness and compaction method can all affect results. Evaluation should reflect the intended site conditions and construction method.
| Item | Reference Value |
|---|---|
| Moisture | 8-12% |
| pH | 9-11 |
| Swelling Index | Min. 23 mL |
| Water Absorption | Min. 500% |
| Appearance | Natural fine powder |
| Packing | 25 kg bags; customized packing available |
The values above are typical reference information. They are not a guarantee of performance in every project. Please confirm the latest TDS and batch COA before final selection or purchase.
The appropriate bentonite grade, mixing ratio, soil condition and compacted-layer thickness should be determined according to the project design, local soil characteristics and required permeability performance.
| Information to share | Why it helps |
|---|---|
| Project type | Clarifies the application, exposure conditions and required sealing function. |
| Local soil type and gradation | Helps assess compatibility, mixing behaviour and expected sealing performance. |
| Target permeability | Provides the performance target for the soil-bentonite layer. |
| Bentonite dosage | Supports trial-mix planning and adjustment of the sealing layer. |
| Mixing and moisture control | Affects dispersion, hydration and uniformity of the final mixture. |
| Compaction conditions | Influences density, permeability and barrier continuity. |
| Water chemistry | Can affect swelling, hydration and long-term sealing behaviour. |
| Packing and logistics | Supports selection of bag, bulk or customized supply formats. |
For dam and pond sealing projects, Hermano can review the local soil type, target application, required swelling capacity and project specification to discuss a suitable grade.
A meaningful evaluation should use soil and conditions that represent the actual project as closely as possible.
This checklist is intended as a practical starting point. The final test programme should follow the project specification and applicable engineering requirements.
Standard packing is 25 kg bags. Bulk supply and customized packing can be arranged for container orders. Packaging options should be confirmed according to order quantity, destination and handling requirements.
TDS, COA, SDS/MSDS and samples are available upon request. Please share the intended application and project requirements so that the relevant technical information can be provided.
It is used in civil engineering applications such as dam and embankment seepage control, reservoir and pond sealing, canal lining, compacted soil waterproofing layers and environmental containment projects.
Yes. It is described as a natural fine-powder sodium bentonite for civil engineering sealing applications. The latest product specification and batch information should be confirmed before use.
Yes. Soil mixing is a common application. The suitability of the local soil, the required dosage and the mixing method should be evaluated with representative material before full-scale construction.
There is no universal mixing ratio. The dosage depends on the local soil, target permeability, bentonite grade, moisture conditions and construction method. Trial mixes should be used to establish the project-specific dosage.
The reference value shown on this page is a minimum swelling index of 23 mL. Different grades and batches may vary, so the latest TDS and batch COA should be reviewed for the selected product.
Grade selection should consider the application, local soil, target permeability, required swelling capacity, water chemistry, mixing method and compaction conditions. A project-specific evaluation is recommended.
Standard packing is 25 kg bags. Bulk supply and customized packing can be discussed for container orders. Please confirm the destination, order quantity and handling requirements before ordering.
TDS, COA, SDS/MSDS and evaluation samples are available upon request. Share your project type, local soil conditions and target performance requirements to help us provide the most relevant information.
Share your project type, local soil conditions, target permeability, required swelling or absorption values and packaging requirements. Hermano can review the information and discuss a suitable grade or sample for evaluation.
