Drainage Geocomposite PEAD 1L, 2L and 2L-F — Techduto

Three-dimensional drainage that replaces gravel and sand

Aplicação de Geocomposto Techduto em talude rodoviário com solo vermelho brasileiro vista 2

Aplicação de Geocomposto Techduto em vala drenante com brita e solo laterítico vista 3

Geocomposto Techduto envolvendo tubo PEAD corrugado em trincheira drenante vista 4

Geocomposto Techduto instalado em campo vista 5

Georrede PEAD do Geocomposto Techduto, núcleo tridimensional em malha diamante vista 6

Drainage Geocomposite PEAD 1L, 2L and 2L-F — Techduto vista 7

Models

1LG, 2LG & 2LG-F

Core

3D HDPE Geonet

Cover

Non-woven geotextile

2LG-F Model

With waterproof film

Standard

DNIT 161/2022

Drainage geocomposite with a three-dimensional core made of HDPE geogrid and nonwoven geotextile. Replaces layers of crushed stone and sand with installation that is 50% faster. Models 1LG, 2LG, and 2LG-F for landfills, highways, and dams.

Do you need mechanical protection for cables? Learn more about Techduto DW

Downloads Techduto Geocomposite Folder PDF — Product folder

The Problem

Traditional drainage layers made of gravel and sand require large volumes of material, heavy-duty transportation, and careful compaction. In landfills, highways, and dams, installation is slow and expensive, and it takes up valuable space in the cross-section of the project.

The Drainage Geocomposite PEAD 1L, 2L and 2L Solution

Techduto Geocomposite completely replaces layers of gravel and sand with a three-dimensional HDPE geogrid core that promotes excellent flow of liquids and gases in all directions. Installed in rolls, it is 50% faster than conventional systems. The 2LG-F model adds an integrated waterproof membrane for dual functionality: drainage + water barrier.

Techduto Geocomposite Specifications

Technical data of Drainage Geocomposite PEAD 1L, 2L and 2L-F — Techduto

Property	Standard	Unit	1LG	2LG	2LG-F
Nominal thickness	ABNT NBR ISO 9863-1	mm	6,25	5,9	5,71
Mass per unit area	ABNT NBR ISO 9864	g/m²	805	881	850
Density	ASTM D 792	g/cm³	0,949	0,949	0,949
Cross-direction tensile strength	ABNT NBR ISO 10319	kN/m	9,0	15,6	10,0
Static puncture resistance	ABNT NBR ISO 12236	kN/m	1,3	2,2	1,7
Transmissivity — gradient 1,00	ASTM D 4716	m²/s	9,3×10⁻⁴	1,8×10⁻⁴	4,5×10⁻⁴
Transmissivity — gradient 0,50	ASTM D 4716	m²/s	1,1×10⁻³	2,0×10⁻⁴	5,4×10⁻⁴
Transmissivity — gradient 0,10	ASTM D 4716	m²/s	2,0×10⁻³	2,5×10⁻⁴	7,0×10⁻⁴
Transmissivity — gradient 0,01	ASTM D 4716	m²/s	8,0×10⁻³	7,5×10⁻⁴	1,8×10⁻³

1LG 1 geotextile layer · 2LG 2 layers · 2LG-F 2 layers + waterproof film. PEAD geonet, 2 m width, available in 30 and 50 m rolls.

Techduto naming maps to market terms: 1LG = 1L drainage geocomposite (1 geotextile layer) · 2LG = 2L drainage geocomposite (2 layers) · 2LG-F = 2L-FP drainage geocomposite / lost formwork (2 layers + impermeable film).

Which Geocomposite line to use for each application

Choosing between 1L, 2L and 2L-F depends on the load on the system and whether an impermeable barrier is needed between the geocomposite and the other side of the structure — an application criterion aligned with DNIT 161/2022 (geosynthetics in road works).

Low load, no barrier needed (garden, green roof, residential basement) → 1L line, lighter, one geotextile layer.
High traffic or structural load (highway, tunnel, platform) → 2L line, two geotextile layers.
Impermeable barrier needed (retaining wall, landfill) → 2L-F line, lost formwork, with an impermeable film between the layers.

1L Garden, green roof, residential basement

2L Highway, tunnel, platform

2L-F Retaining wall, landfill

Retaining wall2L-F

The geocomposite replaces the granular drainage layer behind the wall, relieving hydrostatic pressure on the structure. The 2L-F line isolates the dry side of the wall with the impermeable film, preventing drained water from pushing back against the wall.

Green roof1L

A lightweight drainage layer under the planting substrate, preventing ponding and structural overload on the slab. The 1L line handles the typical low load of green roofs without adding unnecessary weight to the project.

Landfill2L-F

The geocomposite captures and conveys leachate and gases generated by waste decomposition, protecting the base liner. The 2L-F line reinforces the containment barrier required in this type of project.

Why Techduto and not a reseller: since 1986, when it built Brazil's first corrugating machine by hand, Techduto has designed and manufactured its own line of corrugated pipes — it doesn't resell, it produces. Today, with factories in São José dos Campos (SP), Recife (PE) and Primavera do Leste (MT), the engineering behind Techdreno and Drainage Geocomposite is entirely its own. See our full history →

Why choose Techduto Geocomposite

Replaces gravel and sand

3D Center

Quick Installation

3 Models

Total Resistance

Environmental Protection

Where to Use the Drainage Geocomposite

Where Drainage Geocomposite PEAD 1L, 2L and 2L makes the difference

Infrastructure

Highways and Roads

Planar drainage of the base and subbase in place of crushed stone

View segment

Energy

Photovoltaic Power Plants

Moisture Control and Drainage on Solar Platforms

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Agribusiness

Agricultural Drainage

Soil drainage and moisture control over large areas

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Infrastructure

Railroads

Planar drainage beneath railway ballast

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FAQ

Common questions about Drainage Geocomposite PEAD 1L, 2L and 2L-F — Techduto

Yes. The three-dimensional core made of HDPE geogrid provides the same flow of liquids and gases as a layer of crushed stone, with the following advantages: faster installation, less material required, and no need for heavy-duty transport or compaction.

1LG (one layer of geotextile + geogrid) for filtration with drainage. 2LG (geotextile on both sides) for drainage with double filtration. 2LG-F (HDPE film + geogrid + geotextile) when an impermeable water barrier is required in addition to drainage.

Yes. Geocomposites are widely used in landfills for liquid and gas drainage, replacing layers of crushed stone with thinner layers that can be installed more quickly. Chemical resistance is essential in this environment.

Over 50 years. The HDPE used in the geogrid and geotextile is resistant to chemical and biological agents as well as harsh soil conditions, maintaining its drainage properties for decades.

The geocomposite is supplied in rolls. Simply unroll it onto the prepared surface and position it according to the design. No compaction is required. Seams are created by overlapping the rolls by at least 30 cm.

Yes. The 3D core made of HDPE geogrid maintains its structure under compression. For applications under pavements with heavy traffic, please consult our technical team to determine the appropriate model.