About us
Tunnel Joint Experts
Tunnel Joint Experts
About us
We are the only independent experts in underground movement joints for organisations that demand certainty and control in complex projects. By combining deep expertise in joint systems with practical, hands-on solutions and a pragmatic mindset, we deliver safe and reliable results.
our team
Meet our team
Joel van Stee
JoelvanStee@tunneljointexperts.com
+31 (0) 852031126
Frank Blok
FrankBlok@tunneljointexperts.com
+31 (0) 852031126
Danielle Blok
DanielleBlok@tunneljointexperts.com
+31 (0) 852031126
Financiën
Marketing
Stagiair
Tunnel Joint Experts
Independent specialists in tunnel joints
Tunnel Joint Experts (TJE) is an independent specialist in tunnel joints and joint systems for complex underground movement joint projects worldwide. We support contractors and engineering firms working on immersed tunnels and other sinking tunnels where the performance of joints is critical.
Tunnel joints are the linking elements of a tunnel structure. When these joints fail to perform, the consequences can be significant: leakage, delays, technical uncertainty and costly risks. Our role is to make sure joints perform exactly as intended, from the early design phase to construction and long-term performance.
By combining engineering expertise with practical field knowledge, we help project teams maintain control over one of the most critical elements in tunnel construction.
Tunnel Joint Experts
Over 25 years of tunnel joint expertise
Tunnel Joint Experts has built extensive experience in tunnel joint systems through involvement in more than 50 tunnel projects worldwide.
Over the past decades we have worked alongside international contractors, engineers and project teams on some of the most complex tunnel environments. This experience allows us to quickly understand technical challenges and translate them into practical solutions that work in real construction conditions.
Our knowledge covers the full scope of tunnel joint performance, including:
- joint system design
- sealing technologies
- installation methods
- movement behaviour of joints
- long-term reliability and risk mitigation
This combination of theoretical expertise and practical experience makes us a trusted partner in high-risk tunnel projects.
25+ years
of experience
50+
Projects worldwide
100%
Independent
Tunnel Joint Experts
Independent, objective and part of the team
What makes Tunnel Joint Experts unique is our independent position within complex projects.
We are not tied to specific products or suppliers. This allows us to provide objective advice and focus entirely on the performance and reliability of the joint system.
At the same time, we do not operate from the sidelines. In many projects we act as a temporary specialist integrated within the project team. This means we collaborate closely with contractors, engineers and stakeholders to ensure that the joint system performs exactly as intended.
Our approach is open, pragmatic and collaborative. We believe complex infrastructure projects succeed when expertise, transparency and cooperation come together.
Tunnel Joint Experts
Preventing problems before they occur
Tunnel Joint Experts has built extensive experience in tunnel joinIn tunnel construction, uncertainty often leads to delays, technical discussions and increasing risks. Our philosophy is simple: prevent problems before they occur.
By identifying potential risks early and addressing them with practical solutions, we help project teams maintain control over the process and avoid costly surprises during construction.
Our work focuses on:
- early identification of joint-related risks
- practical engineering advice
- technical validation of joint systems
- on-site support during construction
This proactive approach ensures reliable performance of tunnel joints and contributes to the overall success of the project.
25+ years
Experience-Based Solutions
50+
The most experienced independent experts in the world regarding joints (sinking tunnels)
100%
Always profitable (positive ROI)
Tunnel Joint Experts
Trusted worldwide
IToday, Tunnel Joint Experts is recognised internationally as one of the most experienced independent specialists in tunnel joints.
Our work is built on long-term relationships with contractors, engineering firms and project organisations across the global infrastructure sector. Many of our projects arise through referrals and continued collaboration with partners who value independent expertise and practical solutions.
Our mission is to bring certainty and control to one of the most critical elements in tunnel construction.
Joint trust. Trusted joints.
Have a question?
If you have a question or comment, please feel free to let us know.
