The T-BLOCK unit design (by Geoblock) utilised by the system has
been successful and proven since 1990 in a variety of wall applications
from bridge abutments wing walls, railway platform extensions, water
facing walls and many other applications, all further demonstrating
The integrated mono-oriented geogrid (by
TENAX) is manufactured in a continuous process
with cross directional bars homogeneously connected
to the high tensile longitudinal strands to
form a monolithic structure.
Finally, a 100% mechanical connection
by the simple TENAX patented T-CLIP connector, attaches securely
to the TENAX geogrid and
is locked into place between the
Retaining wall system
The reinforced soil technique is a construction method that is thousands of years old and has in the past used
different types of soil reinforcing materials.
Today’s geosynthetics, in particular the use
of geogrids and the structures designed to
use them, are the subject of well researched
Several types of construction systems utilise
the concepts of soil reinforcement.
Amongst them, are soil reinforced block wall systems that make use of concrete blocks
at the face and incorporate geogrids as
reinforcing elements. These systems have
proven to be extremely viable from technical,
aesthetic and economic standpoints.
The T-BLOCK Retaining Wall System is unique and can be considered as a
state of the art system, developed from the
joint cooperation between two of the most
experienced and qualified companies in the
market: TENAX and Geoblock.
The cooperation between the two
companies has allowed the development of
a unique system that delivers the maximum
possible benefits and advantages when
combining the use of geogrid reinforcement with concrete block components.
The T-BLOCK Retaining Wall System offers the best block, the best geogrid and
the best connection system, fully supported
by a comprehensive professional design
The T-Block Retaining Wall System offers many advantages to clients, specifiers and contractors when compared with traditional methods such as reinforced concrete in retaining wall applications:
- Proven and recognised reinforced soil technique with numerous worldwide successful projects;
- Possibility of using site-won backfill, therefore providing further savings;
- Fast and easy to construct;
- Area behind wall can be trafficked straight away;
- Structures designed for 120 years life;
- No practical height limitations;
- Simple construction method that requires no specialist skills;
- Large cost savings over traditional reinforced concrete solutions;
- Can be designed for all surcharge loading applications;
- Variety of facing types to suit client requirements;
- Better resistance to dynamic effects arising from seismic activity.
|TENAX T-BLOCK - Applications
of road and railway embankments
|TENAX T-BLOCK - Installations
Installation of retaining walls
Block Wall selection guide
St. Petersburg, Russia ringroad:
Geogrid reinforced wing wall.
South Korea - Chunsugyo-Saebeari Highway.
Geoblock segmental retaining wall System
|TENAX TT geogrids connection strength
|Long Term Design Strength
The components of T-Block System
The T-BLOCK Retaining Wall System features a modular precast concrete block facing unit, a polymeric T-CLIP connector and layers of
TENAX TT geogrid reinforcement material.
TENAX TT mono-oriented geogrids
The TENAX TT mono-oriented
geogrids are two-dimensional polymer
structures manufactured from HDPE
(High Density Polyethylene) by a process of
extrusion and mono-directional drawing.
The geogrids are certified for the
reinforcement of the soil mass behind the
wall by major international organisations.
Soil and aggregate interlock within the
geogrid openings, which confine the soil,
limit its relative displacements and increase
the soil’s shear stress resistance.
The soil/geogrid structure integrates the fill
soil’s high compressive strength with the
geogrid’s tensile strength, thus creating a
material having greater rigidity and stability
and improving the structure’s resistance to
static and dynamic loads.
The T-block wall units
The T-BLOCK units are high strength precast
concrete modular facing units with a
compressive strength of 35 kN.
Each T-Block unit has a face area of 0,06 m2
(150 x 400 mm x 240 mm thickness) and
consists of a groove formed in the bottom
of the block and a locating rib (or tongue)
formed in the top of the unit.
This “tongue and groove” connection allows
many T-BLOCK units to be securely interconnected,
thereby forming a locked
The concrete units have a minimum
compressive strength of 35kN.
Moisture absorption is less then 5%.
Pigments used in the concrete are pure
iron oxides or, if green or blue, chrome
Plasticizers and water proofer may be used, but sodium accelerants are not
Aimed at satisfying the most
demanding markets worldwide aesthetically
and technically, it’s possible to deliver a
range of existing blocks or custom-design
blocks for specific market needs.
The T-clip connectors
One of the most critical areas for retaining wall structures is the connection strength between the geogrid reinforcement and the block wall facing units.
The TENAX patented T-CLIP connectors deliver a 100% effective mechanical connection with the geogrids and the T-BLOCK units to form a totally integrated system.
The fill material
Typically constructed using compacted granular backfill, selected site-won or imported material. There is also the opportunity to use carefully selected recycled or stabilized backfills within the reinforced soil mass, thereby dealing with environmental pressures concerning the use of natural resources.
The design of the T-BLOCK connection
system is the result of seventeen years
experience of making mechanical
connections between HDPE geogrids and
segmental concrete blocks.
with loose connectors, grids and blocks
led to increasing the simplicity by making
smaller connectors which clip onto the
geogrids thus making two parts into one.
This enables the grid with the connectors to
be laid on the blocks and secured in position
with the next layer of blocks very easily.
The mechanical connection is important as
it allows the system to be used in seismic
areas and optimises the design by allowing
the full long term strength of the geogrids
to be used in the geotechnical design of the structure. By using
a straight through path
for the geogrids the blocks
sit level on the geogrids and so
eliminates rotation of the wall units common
with some other systems.
The walls for this clover leaf interchange were built with blocks designed by Geoblock
and produced locally.
Dubai - United Arab Emirates
Materials and design for the landscaping and structures on major road projects.
This wall shows the flexibility of the T-BLOCK system that maximises the use of a small busy urban area. The strikingly curved, multi-layered wall geometry provides the local residents with ample parking facilities and aesthetically pleasing recreational areas.
Available in a wide range of face styles and colours, the T-Block system can be built in a variety of architectural effects and finishes to match or complement the surrounding built environment.