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Soil stabilisation: Soil improvement - Soil consolidation

We cannot imagine industry or road construction nowadays without ground stabilisation with limestone and cement or other binders. The company founder, Franz Josef Stetter, was a pioneer in developing methods for soil stabilisation, perfecting them step by step.

Inspired by the history of the Russian Tsars, who reinforced their paths back then with burnt lime, as well as from his own experience in working with soil, Franz Josef Stetter was one of the first to develop a process which restores the soil’s capability to bear weights through the use of lime and other binders. A spreader is used to distribute the binder that suits the soil best on the given surface where it is then milled and subsequently sealed. Due to the positive results with this special procedure, Stetter quickly became an approved partner of structural and civil engineering companies.

The continually growing family company now employs more than 40 members in its staff. The innovative company with its team of experienced specialists is perfectly equipped for the demands of the market thanks to its extensive fleet and know-how. The long list of successfully implemented reference projects show that Stetter has gained a reputable name on a national and international stage.


Soils improved with fine ground lime and other binders have established themselves in construction work. This is not just ultimately based on soil values which can actually be measured. Due to the variety of binders, almost any available soil can be improved and even processed to be frost-proof. The replacement of soil unable to bear a load is no longer required, costs can be reduced and unnecessary transport can be avoided: this is an active contribution to cost reduction and protection of the environment. If soil improved with limestone is treated correctly, it can be processed for a period of months and never loses its optimal installation capacity (sewer line construction).

The mixing technique (mixed-in-place) is used in soil improvement as well as in soil consolidation. The corresponding tasks are structured as follows:

• Preparation of the soil
• Distribution of the binder
• The binder and soil are mixed
• The soil-binder mixture is levelled and sealed

Concrete advantages by soil stabilisation

The advantages gained by the use of different binders are easy to see: in soil improvement, excess water contents which cannot be sufficiently sealed may immediately be processed, allowing today for construction work to be carried out in time. In soil consolidation, the load bearing capacity and resistance of the soil is also increased. It withstands permanent strain in the long-term, even if traffic and climate are a strain.

Soil improvement is a technique which can provide a variety of advantages if applied technically correct:

• Massive cost savings; especially for complex construction work
• Soil replacement is superfluous
• Construction work can always be continued; even in bad weather
• The required concentration level is achieved without any problems
• Road and transport routes are not unnecessarily strained
• Consistent protection of the environment
• Valuable resources are conserved

Soil replacement = wasteful

Replacement of the soil is requested in lots of tenders. This is an uneconomical, time-consuming process associated with high costs. This means that tax money and resources are wasted and expensive landfill space is required. The second circular economy law which stipulates the use of local soil materials must also be considered here.



F.J. Stetter GmbH - 73492 Rainau-Buch - Tel. +49 (0)7961 9125-0 - info @stetter-boden .de