Geosynthetic Clay Liner
Needle-punched sodium-bentonite composite barrier for landfill, water and environmental containment systems.
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Cement Blanket (GCCM)
Flexible cementitious rolls for channel lining and slope protection.
- Material
- Water-activated cementitious mat
- Mass per area
- 6 / 8 / 10 / 12 / 15 kg/m²
- Supply format
- Rolls · dimensions to order
From roll to channel lining
Lining an irrigation channel
Flexible rolls follow the prepared channel profile, then harden after hydration.
See the installed lining, roll preparation and layered material in the application case.
View the channel lining caseSpecifications & documents
- Nominal mass per area
- 6 / 8 / 10 / 12 / 15 kg/m²
- Quality category
- Superior or qualified
- Construction
- General or waterproof type
- Thickness & roll size
- Confirmed for the selected order
Mass per area is not thickness. Superior and qualified grades have different flexural requirements; general and waterproof types have different water-resistance requirements. Compare the technical tables.
Product & selection
Cement blanket overview
Cement blanket is a water-activated geosynthetic cementitious composite mat (GCCM). It is supplied as a flexible roll containing a dry cementitious mix within a reinforcing fiber matrix. After the material is positioned, fixed and hydrated, it hardens into a thin, durable cementitious lining that conforms to the prepared surface.
VABREN manufactures and supplies cement blanket (also known as concrete blanket) in China.
How the composite structure works
The upper fiber surface receives hydration water, the three-dimensional matrix retains and reinforces the cementitious mix, and the backing layer helps control water loss and seepage according to the selected construction. The layers work as one system; thickness alone does not determine final performance.
Key product advantages
- Roll-form construction can reduce on-site mixing, formwork and wet-concrete logistics.
- Flexible before hydration, allowing placement over prepared channels, slopes and irregular profiles.
- Hardens after controlled hydration to form a continuous erosion-resistant lining.
- Bulk and smaller roll formats can be reviewed around access, lifting capacity and daily installation output.
- Thickness, backing, roll dimensions, packaging and project-specific test requirements can be reviewed before quotation.
Typical applications
Typical applications include ditch and channel lining, slope erosion protection, culvert lining, berms, spillways, drainage outlets, mine and industrial drainage, temporary or emergency erosion works, weed suppression and remediation of selected existing concrete surfaces.
Product selection
Select the material around the hydraulic condition, expected flow velocity and debris, slope angle, substrate, abrasion, chemical exposure, freeze-thaw environment, required impermeability, access and lifting limits, joint detail, anchorage and design life. A thicker grade is not automatically the correct solution for every project.
Technical specifications & test requirements
NEEDLE-PUNCHED GCCM
Cement blanket technical specifications
The following requirements are taken from the supplied needle-punched cement blanket performance schedule. Select the nominal mass grade and quality category before confirming the order specification.
| Nominal mass grade | Superior product | Qualified product |
|---|---|---|
| 15 kg/m² | ≥2.0 MPa | ≥1.5 MPa |
| 12 kg/m² | ≥1.8 MPa | ≥1.3 MPa |
| 10 kg/m² | ≥1.6 MPa | ≥1.1 MPa |
| 8 kg/m² | ≥1.4 MPa | ≥0.9 MPa |
| 6 kg/m² | ≥1.2 MPa | ≥0.8 MPa |
Requirements shared by the listed grades
| Property | Specification requirement |
|---|---|
| Mass per unit area | Not less than 92% of the nominal value |
| Peel strength | ≥30 N/m |
| Tensile strength | ≥7.0 kN/m |
| Impact resistance | No visible cracks or damage |
| Water resistance | General type: slight seepage. Waterproof type: no wet marks or water droplets on the back of the specimen. |
| Freeze-thaw resistance | No visible cracks, spalling or powdering; reduction in flexural strength ≤20%. |
| Reaction to fire | Not lower than Class B1 specified in GB 8624, as stated in the supplied schedule. |
These are specification requirements, not measured batch test results. The source schedule does not state test methods, test age, water pressure or duration, freeze-thaw cycles or the edition of GB 8624. Confirm the applicable conditions and supporting documents for the selected order. The listed reaction-to-fire requirement does not establish certification.
Installation & storage
Installation sequence
- Prepare and compact a stable substrate; remove sharp objects, loose soil and standing water where the method requires it.
- Unroll, cut and position panels in the approved direction, keeping the material dry before final placement.
- Form overlaps and secure panels, edges, joints, penetrations and anchor trenches according to the project drawings.
- Hydrate evenly with fresh water using the grade-specific minimum volume and re-wetting instructions.
- Protect the installed lining from movement, concentrated loads, early drying and traffic during the specified curing period.
Jointing, fixing and edge details
Overlaps may use screws, approved sealants or other project-specific joint systems. Fixings and anchor trenches must resist hydraulic uplift and site loads without damaging the mat. Upstream laps, terminations, penetrations and transitions require particular attention because installation detailing often governs long-term serviceability.
Hydration and curing controls
Apply water across the fiber surface until the material remains visibly and tactilely wet in accordance with the approved instructions. Hot, windy, sunny or low-humidity conditions can increase early water loss and may require additional hydration and protection. Do not rely on rainfall, and do not use high-pressure jets that wash out cementitious material.
Handling, storage and safety
Keep rolls sealed, elevated and dry until installation. Plan lifting around the roll weight and approved lifting beam or handling equipment. Cutting and hydration work should follow the current safety data sheet, site risk assessment and appropriate PPE requirements for cementitious products.
Quality and inspection points
Before covering or handover, check substrate preparation, panel orientation, overlaps, fixings, edge terminations, penetrations, hydration coverage and visible damage. Any required thickness, mass, flexural, compressive, impermeability or durability evidence must be stated in the purchase specification and verified against the selected factory grade.
Plan installation, hydration and curing
Review subgrade preparation, joints, fixings, uniform hydration and protection during curing with the product requirements.
Read the cement blanket installation, hydration and curing guide →Ordering, samples & delivery
Confirm the supply specification before quotation
- Product: nominal mass grade, superior or qualified category, general or waterproof type and required backing.
- Dimensions: required thickness, roll width and length, roll handling limits and packaging. Mass per unit area is not a thickness specification.
- Project: channel or slope dimensions, substrate, flow and abrasion conditions, expected exposure, quantity in m² or rolls, and destination country or port.
- Documents: drawings, project specification, required test methods, test age and acceptance documents. Hydration water, working time and curing period follow the selected product procedure.
Packaging & deliveryRolls with moisture-resistant sealed packaging
Verification noteThickness, mass, setting time and mechanical properties remain subject to approved TDS.
Customization, production and samples
Made to specification: Most products are made to order according to the required specifications. Send the product, dimensions, grade and quantity for confirmation.
Production cycle: The production cycle for most orders is approximately 15 days. The schedule for the selected product and quantity is confirmed in the quotation. Production time does not include transport to the destination.
Minimum order quantity: The minimum order quantity varies by product and specification. Contact us with your requirements to confirm the quantity for your order.
Samples: Samples are provided free of charge; the customer pays the sample shipping costs. The sample type and size are confirmed according to the product requirements.
Let’s specify your cement blanket.
Specification not final? Send your application, quantity and destination.
Email any drawings or specifications to info@vabren.com. Include the product, quantity and destination so we can match them to your inquiry.
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