Permanent Downchute Protection Solutions

Permanently Protect Downchutes Against Erosion

Synthetex manufactures the leading product for downchute protection, pairing high performance with lower installation costs. Simply lay out the HYDROTEX fabric forms for the in-situ casting on concrete across the downchute, pump with concrete, and create a permanent erosion control system that requires no maintenance.

Get a project estimate today:



Permanently Protect Downchutes Against Erosion

Synthetex manufactures the leading product for downchute protection, pairing high performance with lower installation costs. Simply lay out the HYDROTEX fabric forms for the in-situ casting on concrete across the downchute, pump with concrete, and create a permanent erosion control system that requires no maintenance.

Get a project estimate today:



Cast a custom downchute protection system with HYDROTEX fabric formworks for the casting of concrete.

A better alternative to geocells, prefabricated concrete blocks, and gabion baskets, HYDROTEX permanent erosion control systems are easy to install and customize.

The HYDROTEX geotextiles, or fabric forms, are laid across the downchute and pumped with fine aggregate concrete, creating a mattress with a designe thickness and mass per unit area.

How is HYDROTEX used for downchute protection?

The Problem

Downchutes are a critical element in landfill and waste management, and without proper protection, they can be costly to maintain.

An improperly protected downchute is an investment gone to waste. The earth will erode, costing millions in repair costs.

The Solution: HYDROTEX Fabric Forms for the In-Situ Casting of Concrete

Use HYDROTEX fabric formworks to cast a concrete mattress that conforms to the shape of the downchute, preventing erosion and allowing the transported water to flow much more efficiently.

Best HYDROTEX Fabric Forms for Protecting Downchutes

HYDROTEX Filter Point

HYDROTEX® Filter Point



HYDROTEX Filter Band

HYDROTEX® Filter Band® Concrete Mattress



HYDROTEX Uniform Section

HYDROTEX® Uniform Section



HYDROTEX Enviromat

HYDROTEX® Enviromat®



Articulating Block Concrete Mat on Slope

HYDROTEX® Articulating Block



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Downchute Protection for Landfills

Downchutes are the part of the landfill that aids in wastewater drainage and leachate management. Because of the hydraulic action, the downchute must be protected with a system that relieves hydrostatic pressure and minimizes soil loss. HYDROTEX fabric-formed concrete is the best solution to protect downchutes from damage and erosion.

Which industries typically need downchute protection products and services?

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Related Solutions

Enviromat®

Enviromat® (EM) Concrete Linings


Enviromat Concrete Linings are installed to provide protection against periodic high flows. After installation, vegetation can be planted within the open structure of the lining to create a more natural appearance. Enviromat Concrete Linings are used in drainage ditches and on the upper slopes of channels, canals, lakes, reservoirs, rivers, and other water courses as well as for embankments subject to heavy run-off.

Enviromat Linings are comprised of concrete-filled elements and unfilled areas that allow for the establishment of vegetation.  Once the concrete sets, the defined unfilled and interwoven areas are opened by cutting the fabric and are planted or are filled with topsoil and seeded.  Within a growing season a vegetated cover will normally extend over the lining, resulting in an erosion control system with the hydraulic, ecological and aesthetic features desired.

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HYDROTEX® FilterBand®

FilterBand® (FB) Concrete Linings


FilterBand® (FB) Concrete Linings are similar to Filter Point, providing an effective and highly permeable concrete lining that resists erosive forces. FilterBand® differs from Filter Point in that the form creates interconnected, tubular concrete elements that are separated by large, interwoven filtration bands.  The filtration bands provide for greater reduction of uplift pressures than Filter Point Linings.  Also, the biaxial alignment of the tubular elements creates two directionally determined coefficients of hydraulic friction. As a result, FilterBand® achieves greater reduction of flow velocity or wave energy than Filter Point.

FilterBand® concrete linings are specified in situations similar to those for which Filter Point might be specified, which also require greater relief of uplift pressures, higher reduction of flow velocities, or greater reduction of wave run-up.

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HYDROTEX® Uniform Section

Uniform Section (US) Concrete Linings

Uniform Section (US) Concrete Linings


Uniform Section (US) Concrete Linings are similar to traditional concrete slope paving.  They create a solid, high-quality concrete lining with a relatively low hydraulic resistance and uniform cross-section.  Uniform Section linings are used to reduce the infiltration or exfiltration of aggressive waste and chemical fluids into or out of open channels and basins.  They are also used to reduce exfiltration in arid regions where open channels and basins require watertight linings.

Uniform Section Concrete Linings are resistant to leachate and most chemicals.  They protect geosynthetic liners from mechanical damage, exposure to UV light, and freeze-thaw cycles.  These self-supporting, high-strength linings permit construction on steep side slopes and replace the conventional use of clay or sand as liner protection. Placement of the forms and concrete filling can be performed without the use of equipment on the liner.  The tensile strength and abrasion resistance of the fabric protect the liner from the pumped concrete.

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HYDROTEX® Articulating Block

Articulating Block (AB) Concrete Linings

Articulating Block (AB) Concrete Linings


Articulating Block Mats form cable-reinforced concrete block mattresses that resist erosive forces. They are often constructed where a revetment is exposed to frontal attack by wave action.

AB Mats are typically used to protect coastlines, canals, rivers, lakes, reservoirs, underwater pipelines, bridge piers, and other marine structures from propeller wash, ship wakes, wind waves, currents, and high velocity flows. They are also used in environmental construction for landfill caps, down chutes, and collector channels.

The AB fabric form consists of a series of compartments linked by an interwoven perimeter. Grout ducts interconnect the compartments, and high-strength revetment cables are installed between and through the compartments and grout ducts.

Once filled, the AB Mats become a mattress of pillow-shaped, rectangular concrete blocks. The interwoven perimeters between the blocks serve as hinges to permit articulation. The cables remain embedded in the concrete blocks to link the blocks together and facilitate articulation.

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Submit a Request for an Articulating Block Specification

We’ll get back to you within 1-2 business days. All specifications are available in both nylon and polyester configurations.

Submit a request for a technical specification

We’ll get back to you within 1-2 business days. All specifications are available in both nylon and polyester configurations.





HYDROTEX® Filter Point

HYDROTEX Articulating Block

HYDROTEX Uniform Section

HYDROTEX Filter Band

HYDROTEX Enviromat

HYDROTEX® Filter Point

Filter Point (FP) Concrete Linings

Filter Point (FP) Concrete Linings


Filter Point Concrete Linings with filtration points (drains) provide erosion-resistant, permeable concrete linings for ditches, channels, canals, streams, rivers, ponds, lakes, reservoirs, marinas, and protected port and harbor areas.

Filter Point Concrete Linings have a cobbled surface and a relatively high coefficient of hydraulic friction in order to achieve lower flow velocities and to reduce wave run-up. The filtration points provide for the relief of hydrostatic uplift pressures, increasing the system’s stability.

Filter Point Concrete Linings were the first type of fabric formed concrete system developed. In 1965, a Dutch patent was issued for “fabric formed slope paving.” The form suggested by this patent was later refined to create the first “filter point” lining.

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Submit a Request for a Filter Point Specification

We’ll get back to you within 1-2 business days. All specifications are available in both nylon and polyester configurations.

Submit a request for a technical specification

We’ll get back to you within 1-2 business days. All specifications are available in both nylon and polyester configurations.





HYDROTEX® Filter Point

HYDROTEX Articulating Block

HYDROTEX Uniform Section

HYDROTEX Filter Band

HYDROTEX Enviromat