On sites involving diaphragm walls, drilling, geothermal projects or tunnelling work, the management of excavated material presents a major technical, economic and environmental challenge. The nature of the soil, the moisture content of the slurry, logistical constraints and the requirements of treatment facilities all necessitate an approach tailored to each specific site. To ensure rapid and compliant disposal, APROTEK supports its clients from the very earliest operational stages through on-site testing and high-performance solutions for dewatering and solidifying excavated material.
APROMUD®: a high-performance solution for dewatering and solidifying sludge
The APROMUD® super-dewatering agent has been specially developed to address the challenges of managing sludge and excavated material from civil engineering works, diaphragm walls, drilling, special foundations, geothermal projects and tunnel boring machines.
Thanks to its high absorbency, APROMUD® rapidly transforms liquid or paste-like excavated material into a solid, manageable and transportable material. This technology significantly improves handling conditions, minimises loading difficulties, ensures safe transport and facilitates the acceptance of materials at treatment facilities or industrial solid waste disposal sites (ISDI).
Available in a range of packaging options to suit the requirements of each site, APROMUD® offers an effective solution for companies seeking a reliable way to optimise the management of their excavated material whilst keeping operating costs under control.
Before each operation, APROTEK systematically carries out a site trial in order to:
- determine the most suitable APROMUD® grade;
- define the optimal dosage based on the characteristics of the sludge;
- select the most appropriate packaging;
- validate performance under real-world conditions;
- accurately estimate treatment and disposal costs;
- prepare future operations on a sound technical and economic basis.
Step 1: Liquid excavated material that is difficult to dispose of
During diaphragm wall construction, the excavated material often has a high water content. This liquid or very paste-like slurry complicates loading operations, increases the risk of spillage during transport and may result in the material being rejected at processing sites.
On the site in question, nearly 120 m³ of wet spoil had to be processed quickly in order to maintain the pace of operations and minimise the costs associated with its disposal.
Step 2: Application of the APROMUD® super-dewatering agent
Following an analysis of the characteristics of the excavated material, the APROTEK teams selected the APROMUD® G350 super-dewatering agent, supplied in 25 kg bags, which is perfectly suited to the site’s requirements.
The product is spread directly onto the sludge to ensure uniform treatment and optimum effectiveness.
Step 3: Mixing the excavated material and a reaction time of 15 minutes
Once the product has been applied, the excavated material is mixed mechanically to promote contact between the super-drying agent and the slurry.
After approximately 15 minutes, the reaction significantly reduces moisture content, improves the cohesion of the material and results in the effective solidification of the excavated material. This stage is essential for making the materials manageable under optimal operational conditions.
Step 4: Dried, solid and easily handled excavated material
Once the treatment is complete, the excavated material has a much more stable consistency. It can be easily collected using a backhoe, loaded onto lorries without spilling, and handled safely.
This rapid drying improves site productivity whilst minimising interruptions caused by slurry management.
Step 5: Safe transport and improved acceptance at inert waste treatment and storage facilities
Thanks to the treatment carried out using APROMUD®, the excavated material meets the requirements of inert waste treatment and storage facilities.
The risk of rejection is reduced, transport is made safer and logistics operations are simplified. This optimisation enables specialist works, construction, drilling and civil engineering companies to better manage their disposal timescales and costs.
Technical support that goes far beyond simply supplying a product
At APROTEK, our mission is not merely to supply a high-performance dewatering agent. We support each client throughout the project to identify the most effective solution based on the characteristics of the excavated material, site constraints and economic objectives.
Our approach is based on real-world testing, dosage recommendations, technical monitoring during operations and continuous performance optimisation. This approach ensures reliable, reproducible slurry management that is perfectly suited to diaphragm wall works, drilling, tunnel boring, geothermal projects and special foundations.
A solution that contributes to more responsible management of excavated material
Optimising sludge dewatering plays a direct role in reducing the environmental impact of construction sites. By improving the quality of excavated material prior to its removal, it becomes possible to minimise the nuisance associated with transport, ensure the safe handling of waste streams and facilitate their disposal via appropriate channels.
This approach is fully in line with APROTEK’s commitments to more sustainable construction, better resource management and a reduction in the environmental footprint of civil engineering, drilling, geothermal and specialist works.
Have your site assessed
Every site has its own technical constraints. That is why APROTEK offers on-site testing to determine the most effective APROMUD® solution for your excavated material.
Are you planning a project involving diaphragm walls, drilling, tunnel boring, geothermal energy or special foundations?
Contact our teams to benefit from personalised technical support and to optimise the management, dewatering and solidification of your slurry and excavated material right from the start.