SIGMA concrete blanket is a Geosynthetic Cementitious Composite Mat (GCCM) — also known as concrete canvas or concrete cloth — a flexible three-dimensional fibre matrix filled with a specially formulated dry concrete and backed with a PVC waterproofing layer. It is laid out, hydrated with water and sets into a thin, fibre-reinforced concrete layer, giving low alkalinity and low erosion with minimal impact on the ecological environment. Specified to ASTM D8364, this concrete mat can be hung vertically, laid in grooves or cut to shape, making it an ideal concrete mat for erosion control, channel lining, ditch lining and slope protection.
A concrete blanket — also sold as concrete canvas or concrete cloth — is roll-shaped engineering concrete: a flexible cloth reinforced with a three-dimensional fibre structure for strength and durability. It has the characteristics of low alkalinity and low erosion, which minimizes the impact on the ecological environment. Once hydrated, the fabric solidifies quickly to form a rigid, durable and waterproof layer rated to 5,000 psi. The cloth remains flexible for up to two hours, so it is easy to work to the contour of irregular surfaces before it hardens.
The concrete cloth fabric is a Geosynthetic Cementitious Composite Mat (GCCM): a three-dimensional fibre matrix is filled with a specially formulated dry cement mix and bonded to a PVC backing. This concrete impregnated fabric carries its own cement, so there is no batching, mixing or formwork on site — the dry powder stays locked in the fibre weave until water activates it. The PVC layer gives a waterproof, root- and chemical-resistant face on the underside, which is why the cement blanket doubles as a thin liner as well as a wear surface.
The concrete blanket is rolled out, cut and fixed in place, then hydrated with water at roughly a 1:2 ratio; fresh, salt or non-potable water all work, which suits marine and remote sites. Its unique structure makes installation convenient: the GCCM concrete mat can be hung vertically, laid in grooves or cut into shape to form a durable concrete layer. The cloth stays workable for about one to two hours, long enough to press it to the subgrade, before it hardens into a rigid fibre-reinforced concrete shell.
The blanket is an ideal choice for various engineering repair applications: it is quickly cut and fixed in place for strengthening or repairing culverts, drainage ditches, abutments, berms or other structures, and serves as concrete mats for erosion control and slope protection where pouring concrete would be slow or impractical. Typical jobs include channel and ditch lining, culvert and pipe-outlet protection, embankment and bund lining, and weed suppression. Where a thicker poured-in-place revetment is needed instead, see our concrete revetment mattress.
We supply the concrete blanket in 5 mm, 8 mm and 13 mm grades (ASTM D8364 Type I / II / III), all reaching ≥ 70 MPa compressive strength at 28 days and ≥ 3.5 MPa initial flexural strength at 24 hr. Thinner grades suit ditch lining and weed control where speed and low weight matter; thicker grades suit channels, slopes and heavier hydraulic and abrasion duty. The grade sets the roll weight per square metre and the breaking load, so it is matched to the flow and service life the site demands.
As a manufacturer we quote concrete blanket / concrete canvas ex-works per square metre or per roll — send the grade, area and destination for pricing. Rolls ship as bulk or batch widths and palletize well for sea freight, so we export concrete cloth worldwide. See the wider erosion control range for related slope-protection products.
Concrete Blanket (GCCM) — properties by thickness grade, per ASTM D8364. Values verbatim from the source datasheet.
| Property | Test Method | Unit | 5 mm | 8 mm | 13 mm |
|---|---|---|---|---|---|
| Nominal thickness | ASTM D5199 | mm | 5 | 8 | 13 |
| Mass per unit area (nominal) | ASTM D5993 | kg/m² | 7 | 12 | 19 |
| GCCM Classification | ASTM D8364 | Type | I | II | III |
| Compressive strength (28-day, cementitious mix) | ASTM D8329 | MPa | ≥ 70 | ≥ 70 | ≥ 70 |
| Initial Flexural Strength (IFS, 24 hr) | ASTM D8058 | MPa | ≥ 3.5 | ≥ 3.5 | ≥ 3.5 |
| Initial breaking load (flexural, 24 hr, MD) | ASTM D8058 | N/m | 750 | 1,750 | 5,000 |
| Set / working time | — | hours | 1–2 | 1–2 | 1–2 |
A concrete blanket — also called concrete canvas or concrete cloth — is a Geosynthetic Cementitious Composite Mat: a flexible fibre matrix filled with dry concrete and backed with PVC. You lay it out, hydrate it with water and it sets into a thin, durable, fibre-reinforced concrete layer for erosion control, channel lining and slope protection.
It stays flexible and workable for about 1–2 hours after hydration, then solidifies into a rigid waterproof layer. It reaches ≥ 70 MPa compressive strength at 28 days per ASTM D8329.
Three grades to ASTM D8364: 5 mm (Type I), 8 mm (Type II) and 13 mm (Type III). Thinner grades suit ditch and weed-control lining; thicker grades suit channels, slopes and heavier hydraulic and abrasion duty.
Yes. The concrete blanket can be hydrated with fresh, salt or non-potable water at roughly a 1:2 ratio, which makes it convenient for marine, shoreline and remote sites.
Roll it out over the prepared subgrade, overlap and fix adjacent runs, cut to shape, then hydrate with water. It stays flexible for about one to two hours so you can press it to the contour and into grooves before it sets. No mixing, batching or formwork is needed because the cement is already in the cloth.
Standard rolls are about 1.0–1.1 m wide and supplied in bulk and batch lengths by grade (for example 5 mm at 7 kg/m², 8 mm at 12 kg/m², 13 mm at 19 kg/m²). Tell us the total area and grade and we will confirm the most efficient roll format for your job and for shipping.
Concrete blanket / concrete canvas price depends on the thickness grade, total area and order volume. As the manufacturer we quote ex-works per square metre or per roll and can arrange FOB or CIF sea freight worldwide — send the grade, area and destination port for pricing.
Tell us quantity, destination port, and any questions — we reply within one business day.
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