FE 05.0217/2026/FGB - “Alternative binders for soil treatment in earthworks for road construction”

The Federal Highway Research Institute in Germany from Europe region has released this tender for The standardized binders lime and cement are effectively used for soil treatment. However, a disadvantage is that lime and cement cause high CO2 emissions. Therefore, it is important to explore which alternative binders can be used for sustainable soil treatment. With the standardized binder cement, efforts are underway to achieve a better CO2 balance through clinker-reduced cements. However, reducing the clinker phases also means reducing the strength-forming components. Therefore, suitability tests should be conducted to determine whether clinker-reduced cements are suitable for soil treatment. The addition of ash (e.g., paper ash, fly ash) alters the compaction properties of the soil and also increases its strength. In addition to questions about its mode of action, ash also raises questions about its consistent and reliable composition (range of variation in composition) and its environmentally relevant constituents. Special binders are available on the market that can be used as binders or as additives. Soil treatment additives serve to improve the material properties of the starting material and reduce the amount of binder subsequently added. The aim of this research is to investigate the effects of selected alternative binders and compare them with those of standardized binders. Furthermore, a fundamental assessment of alternative binders and a suitability assessment for soil treatments using non-standardized binders will be developed. It is in the federal governments interest to pursue sustainable road construction, which means using binders that effectively improve or permanently stabilize the soil, as well as being environmentally friendly, low-emission, resource-efficient, and economical. with tender notice no. 710247-2026 published on 14 Oct 2026. The tender is due to expire on 19 Nov 2026. This tender is sourced from TED Europa and is eligible for suppliers interested in Binders and related accessories, Binders, Ring binders, Road-construction materials, Road-maintenance materials. Interested bidders can obtain further information including complete bid documents or ways to participate by registering on Tender Impulse and referencing via Tender Impulse ID 15506336.