A motor grader shaping a red laterite road at sunset while two engineers supervise

N'Djamena · Republic of Chad

Building more sustainable infrastructure for Chad

Integrated solutions in infrastructure, industry and productive investment.

Explore our solutionsContact us
  • 01Infrastructure
  • 02Industry
  • 03Investment

Grading a laterite road in the Sahel — illustrative image.

Founded
Headquarters
Rue 60, Quartier Diguel, N'Djamena
Legal form
SARL — Limited liability company
Fields
Infrastructure · Industry · Productive investment

01Who we are

A Chadian company committed to lasting development

YUSR is a Chadian company working in infrastructure, industry and productive investment. Its aim is to contribute to sustainable development through projects with tangible economic, social and environmental impact.

Our management is built on accountability, transparency, regulatory compliance, operational efficiency and good governance.

Mr. Mahamat Ibni Mahamat Ali

Managing Director & CEO

Two engineers reviewing road plans on site with a motor grader behind them
Field teams reviewing road plans — illustrative image.

02Our expertise

Three complementary fields

From the road surface to the pipe network and the financing structure, YUSR covers the full chain of an infrastructure project.

  1. A straight red laterite road with side drains through the savannah
    01

    Infrastructure

    Road, urban & environmental infrastructure

    • Treatment and stabilisation of earth roads
    • Strengthening and improvement of road platforms
    • Dust reduction solutions
    • Stormwater management and drainage
    • Support for urban infrastructure projects
    • Environmental solutions tailored to local communities
  2. Stacked PVC and GRP pipes in a storage yard
    02

    Industrial solutions

    Materials and networks serving infrastructure

    • Composite products and systems (GRP / GFRP)
    • Pipes and infrastructure components
    • Drainage and sanitation solutions
    • PVC products for networks and public facilities
    • Study and development of industrial solutions

    Industrial activities are currently in the study and development phase.

  3. Business meeting around a road model and project plans
    03

    Productive investment

    Structuring projects that create value

    • Feasibility studies
    • Technical partnerships
    • Technology transfer and training
    • Local content development

    Financing structures

    • BOT
    • PPP
    • EPC + Finance
    • Joint Venture

03Flagship initiative

Cleaner Air, Safer & Sustainable Roads

In development · N'Djamena

An initiative to improve unpaved roads, reduce dust and strengthen urban drainage in N'Djamena.

Workers pouring a concrete drainage channel beside an earth road, excavator behind

AThe challenge

Vehicles and a motorbike in thick dust on an earth road
Dry season
Earth road rutted and waterlogged after rain
Rainy season

  • Dry season

    Dust rises with every vehicle, affecting air quality, visibility and daily life.

  • Rainy season

    Water collects and roads turn to mud, slowing or cutting off traffic.

  • Unpaved roads

    Untreated surfaces wear quickly and require constant, costly maintenance.

BThe solution

  • Stabilisation

    Treating and improving the soil to increase its bearing capacity.

  • Road improvement

    Shaping the road and correcting its slopes.

  • Dust reduction

    Less dust and mud, more comfort and safety.

  • Drainage

    Protecting the road against water and standing pools.

Treatment in three phases

  1. Earth street with standing water after rainBefore treatment
  2. Motor grader working on a laterite roadDuring treatment
  3. Smooth, dry laterite street with side drainsAfter treatment

Our approach

  1. 01Inspection & diagnosis
  2. 02Identifying the cause
  3. 03Choosing the right solution
  4. 04Execution
  5. 05Monitoring & preventive maintenance
Two workers levelling soil in front of a roller during road maintenance

Maintenance programme

Maintenance and rehabilitation of existing roads

Extending road life and reducing costs through the right intervention at the right time.

  • 01Localised repair of potholes and minor damage
  • 02Preventive maintenance to stop deterioration before it spreads
  • 03Structural rehabilitation where the soil or foundations are weak
  • 04Improved drainage and water channels

What we aim for

  • Less dust
  • More stable roads
  • Lower maintenance costs
  • Longer service life

04How it works

What changes on the road

An illustrated cross-section of an earth road. Switch seasons and see what treatment changes.

Explanatory illustration: What changes on the road123123123123
Explanatory illustration

Before treatment · Dry season

Loose surface, dust in the air

  1. 1Loose, unbound surface soil
  2. 2Dust lifted by every vehicle
  3. 3No profile to guide water away

Before treatment · Rainy season

Water soaks in, the road turns to mud

  1. 1Water ponds in the ruts
  2. 2Rain seeps into the soil and weakens it
  3. 3Mud and ruts slow or stop traffic

After treatment · Rainy season

Water runs off to the drains

  1. 1The stabilised layer resists water
  2. 2The camber sheds rain to the sides
  3. 3Side drains carry the water away

After treatment · Dry season

Firm surface, cleaner air

  1. 1A bound surface that raises far less dust
  2. 2Higher bearing capacity
  3. 3Less maintenance over time

05Laboratory

From the lab to the road

Before any work on site, local soils are tested to confirm they can be stabilised — to increase their resistance to water, loads and deformation, and extend the life of roads and infrastructure.

Cylindrical soil samples in different shades on a laboratory bench
A technician preparing a soil sample in a triaxial test cell

Test samples

  1. A
    Reference sample

    natural, untreated soil

  2. B
    Treated samples

    soil with different stabiliser doses

  3. C
    Water-resistance test

    samples exposed to water and compared

  4. D
    Post-immersion test

    strength and hardness measured after long immersion

The 13 stages of testing

  1. 1. Soil sampling
  2. 2. Initial characterisation
  3. 3. Sample preparation
  4. 4. Stabiliser dosage
  5. 5. Treatment & mixing
  6. 6. Moulding & compaction
  7. 7. Drying & curing
  8. 8. Strength test
  9. 9. Water immersion
  10. 10. Re-test after immersion
  11. 11. Analysis of results
  12. 12. Comparison & evaluation
  13. 13. Selection of the optimal formulation

Tests before and after stabilisation

Before stabilisation

  • Particle size analysis
  • Water content
  • Density
  • Atterberg limits
  • CBR test

After stabilisation

  • Compressive strength / bearing capacity
  • Density
  • CBR test
  • Water resistance
  • Resistance to deformation
  • Before / after performance comparison

Long-term water immersion test

Strength and hardness are measured before immersion and after defined periods, to compare how well the stabiliser keeps the soil cohesive.

Untreated soil
Untreated soil
Immersed in water for defined periods
Treated soil
Treated soil

Advantages of soil stabilisation

  • Greater strength and hardness
  • Less sensitivity to water and deformation
  • Longer road life
  • Lower maintenance costs
  • Environment-friendly solutions
  • Supports sustainable development

Tests in images

  • Technician running a Proctor compaction test in a soil laboratory
    01Proctor compaction apparatus
  • Cylindrical soil sample in a compression testing machine
    02Soil sample compression test
  • Treated soil sample that remains compact after long immersion in water
    03Prolonged immersion test
  • Cube of treated soil
    04Durability after treatment

We test in the laboratory… to succeed in the field.

06Before / After

The difference is visible

Drag the handle to compare an unpaved road before and after treatment.

Smooth, dry laterite street with side drains
Earth street full of puddles and ruts after rain

What the tests demonstrate

  1. 01

    Water resistance

    Water remains on the surface of treated samples.

  2. 02

    Prolonged immersion

    Samples remain cohesive after long periods in water.

  3. 03

    Compressive strength

    Resistance measured under load, before and after immersion.

  4. 04

    Erosion resistance

    Blocks resist cutting and disintegration.

  5. 05

    Improved soil properties

    Hardness and bearing capacity increase after treatment.

  6. 06

    Before / after comparison

    Every formulation is compared with the untreated reference soil.

The before/after images in this section are illustrative simulations of what treatment aims to achieve; laboratory images show reference tests of the proposed stabilisation technology. Performance on N'Djamena's roads will be confirmed by project-specific testing.

07Vision & Mission

Vision

To be a national reference partner in the development of infrastructure, industry and investment, actively contributing to the sustainable development goals of the Republic of Chad.

Mission

To develop and deliver high value-added projects in infrastructure and industry through appropriate technical solutions, strategic partnerships and the development of national skills.

Aligned with Vision Tchad Connexion 2030

YUSR's activities are aligned with the strategic priorities of the national vision.

  1. 01Infrastructure development
  2. 02Industrialisation & local content
  3. 03National skills development
  4. 04Productive investment
  5. 05Sustainable urban development

08Partnerships

Partnerships that create impact

YUSR welcomes technical and investment partnerships with institutions and companies, in accordance with applicable laws and mutual interests.

  • National
  • Regional
  • International
Discuss a strategic partnership

How we work

Execution
Direct delivery or through technical alliances.
Partnerships
Technology transfer, training and local content development.
Financing
BOT · PPP · EPC + Finance · Joint Venture
Illustrative aerial view of a Sahelian city on a river at sunset

Why YUSR

  1. 01Local understanding
  2. 02Infrastructure solutions
  3. 03Industrial vision
  4. 04Productive investment
  5. 05Strategic partnerships
  6. 06Local content development

09Contact

Let's build a project with impact together

A project, a partnership or a simple question — our team will get back to you.

Email by department

General inquiries
info@yusrgroup.com
Projects & technical requests
projects@yusrgroup.com
Partnerships & investment
partnerships@yusrgroup.com
Procurement & supply
procurement@yusrgroup.com
Media & press
media@yusrgroup.com

Send us a message

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