Loudon International

Loudon International Proud technology partners of the Wirtgen Group.

Experienced pavement engineers and specialists in Bitumen Stabilized Materials (BSM), cold in place recycling (CIR) and full depth reclamation (FDR) with specific focus on the use of foamed bitumen.

Full Depth Reclamation (FDR) project in Dammam, Eastern Province, Saudi Arabia. The road consists of a dual carriageway ...
08/05/2026

Full Depth Reclamation (FDR) project in Dammam, Eastern Province, Saudi Arabia. The road consists of a dual carriageway with two lanes in each direction and serves as an access road to King Fahd International Airport.

Project Specifications:
- Total length: 13.2 km per carriageway
- Recycling width: 12.3 m per carriageway
- Recycling depth: 200 mm

The existing pavement structure comprises a thick asphalt layer, including an asphalt wearing course and asphalt base course, overlying a stiff and intact granular layer.

Cement is utilised to stabilise the in-situ material during the FDR process. The 200 mm rehabilitation depth incorporates both the asphalt and granular material. A Wirtgen WR240 is used to mix the cement, asphalt, and granular material to create a cement-stabilised layer.

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11/10/2025

Cold Recycling in Morocco

24/06/2025

🎥 What happens when water hits bitumen at 160°C? Episode 7 of our Pavement Engineering 101 series reveals the high-speed reaction behind one of the most powerful tools in modern BSM design.

We break down how a burst of steam turns thick bitumen into a low-viscosity foam, and why this moment matters for strength, moisture resistance, and traffic-ready pavements.

Think you know foamed bitumen? This episode might surprise you.

📽️ Watch now, the physics alone are worth it.

đź’¬ Have you worked with foam before? Share your insights with us below

Stay tuned for our Season Finale, Emulsion vs Foam

Two stabilisers. One showdown. Which one leads your design?

28/03/2025

Bitumen Emulsion: Cool, Calm and Powerful!
🎥 In this episode of our Pavement Engineering 101 animation series, we explore bitumen emulsion — a stabilising agent that blends effortlessly with aggregate at ambient temperatures.

Want to understand why bitumen emulsion is such a smart choice in BSM technology? Watch the full episode and see how it’s shaping the future of pavement construction.

Have you worked with bitumen emulsion before? Let us know your thoughts and experiences in the comments below 👇

And stay tuned — next we’ll break down how foamed bitumen is made!

14/03/2025

🌍 Asphalt Recycling: A Global Solution for Sustainable Roads 🚧

Using techniques like cold in-place recycling (CIR) and full depth reclamation (FDR), we’re reducing greenhouse gas emissions by up to 50%, extending pavement life, and reducing costs for taxpayers. It’s a versatile solution, proven on major highways like Virginia’s I-81 and I-64.

Watch the full video at: https://www.youtube.com/watch?v=LeVzShJmKTI&t=2s

🔹 What You’ll Discover:

1. Environmental Impact: We can reduce greenhouse gas emissions. In some cases, we've seen 40, 50%.

2. Economic Benefits: We get a much longer life out of those pavements, benefiting taxpayers and road users.

3. Versatility: These methods have been used on all kinds of roads on all the continents, except for Antarctica of coarse.

Special thanks to on YouTube for the original upload.

How Far Road Recycling Has ComeIn our last post, we shared a 2002 clip of a Wirtgen WR 2500 S working on HWY5 in CopiapĂł...
14/02/2025

How Far Road Recycling Has Come

In our last post, we shared a 2002 clip of a Wirtgen WR 2500 S working on HWY5 in CopiapĂł, Chile, where pavement recycling was already taking shape.

Fast forward to today, and the transformation is incredible. Machines are smarter, processes are greener, and sustainability is at the core of road construction.

Innovations in cold recycling and full-depth reclamation have made road rehabilitation more efficient than ever before.

Nostalgia aside, it’s amazing to see how yesterday’s innovations laid the foundation for today’s advancements. Where do you think the next 20 years will take us?

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A Look Back at Road Recycling in 2002 ⌛ Sometimes, the past offers a fascinating perspective on how far we've come.We re...
31/01/2025

A Look Back at Road Recycling in 2002 ⌛

Sometimes, the past offers a fascinating perspective on how far we've come.

We recently came across this 2002 footage of a Wirtgen WR 2500 S working on HWY5 in Copiapó, Chile—a true workhorse of its time.

Seeing it in action again is a nostalgic reminder of how road pavement recycling was already making its mark over two decades ago.

Back then, this was cutting-edge technology, paving the way for modern road rehabilitation methods. But how much has really changed since then?

Join us in 2025 as we explore how far road recycling has come and what the future holds. Stay tuned! 🌍

25/12/2024

Wishing you a joyous festive season and a sustainable start to the new year! At Loudon International, we're proud to build a greener future, one road at a time. Here's to another year of innovation and progress, together.

Reflecting on a year of progress in sustainable road pavement engineering, we at Loudon International are proud of our c...
20/12/2024

Reflecting on a year of progress in sustainable road pavement engineering, we at Loudon International are proud of our contributions to advancing Bitumen Stabilised Materials (BSM) technology. Collaborating with esteemed partners like WIRTGEN, we've championed recycling and bitumen stabilisation as preferred methods for rehabilitating distressed pavements, promoting environmental benefits alongside economic advantages. Here's to building smarter, safer, and more sustainable roads together!

For a closer look at the innovations driving our industry forward and the excitement we share around it, check out this video from the Wirtgen Group Technology Days 2024: https://youtu.be/97kN9-U8PRQ

15/11/2024

As 2024 draws to a close, we reflect on the vast, open deserts of Saudi Arabia—often seen as endless stretches of sand and sun. Yet, through our lens, these landscapes become the proving grounds for advanced road rehabilitation technology.

Standing back to witness in-place recycling in action is a powerful reminder of the progress we've made. We're proud to pioneer techniques that enable road repairs in record time, no matter the environment, and to partner with those who share our commitment to sustainable engineering. Together, we are pushing the boundaries of what’s possible—sustaining Earth’s resources while advancing global economies.

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