CASE STUDY
IN-SITU SOIL STABILISATION FOR A FOOTPATHAND CYCLE WAY
PETERBOROUGH, APRIL 2019
CLIENT: GKL GROUP
Industry: Civils
For civils industries, we offer a permanent and temporary Soil Stabilisation solution, for projects where large areas of ground material needs treatment, whithout having to remove material from site.
Application: In-situ
With our in-situ application, stabilisation is carried out in one continuous motion,for sub soil that needs to remain onsite to be re-used and treated, when there is no room to stockpile material.
EXECUTIVE SUMMARY
This case study demonstrates thesuccessful in-situ application ofSMR for soil stabilisation. Byaddressing challenging groundconditions and waterloggingissues, SMR achieved exceptionalCBR values and substantialenvironmental benefits.
PROBLEM STATEMENT
Early in construction, our client encountered unexpectedground conditions, particularly waterlogged areas alongthe footpath route. After multiple attempts to stabilise theground through traditional methods failed due to highlevels of contaminated ground, SMR (UK) Ltd was broughtin as the specialized sub-contractor. The task was tostabilize approximately 3,500 m2 and attain a minimum50% CBR value to facilitate emergency services accessaround the lake.
THE SMR SOLUTION
Following a soil analysis, which showed a high moisturecontent of 45.5 % and high levels of contaminatedground, the decision was made to modify the groundprior to stabilising by a single 300mm pass with an SMRmodifying Binder, followed by a single pass of SMRProprietary Binder to a depth of 300mm. A 300mm layerof SMR Proprietary Binder was introduced through thestabilizing drum and then rotavated into the existingground before compaction. The Binder was rotavatedinto the existing ground before compacted with a 13 tonsingle drum roller. The challenge of limited spacenecessitated precise plant manoeuvring to achieveaccurate compaction for successful CBR results.
RESULTS
The application of SMR resulted in CBR values surpassing the project’s minimum requirement,showcasing the effectiveness of the solution. After 48 hours of the curing process, the groundwas showing CBR values of 40%, and after 7 days the stabilised ground was now exceeding theCBR value requirements of 50% and successfully encapsulating the contaminants that werepresent in the host material.
BENEFITS
Material Efficiency: Eliminated the need for material import and export, saving approximately250 lorry movements.
Environmental Impact Reduction: Saved around 5,500 liters of diesel or 15 tons of CO2emissions through reduced transportation.
Program Efficiency: Enabled efficient project delivery while achieving impressive outcomes.
Environmental and Ecological Impact Reduction: Reduced the project’s environmentalfootprint and ecological impact.
CONCLUSION
The utilisation of SMR effectively addressed theground modification and stabilisation challenge.Beyond achieving the desired outcomes, theapproach yielded substantial benefits in terms ofprogram efficiency and environmentalstewardship.
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