IN-SITU SOIL STABILISATION FOR THECONSTRUCTION OF A PILING MAT
WESTERGATE, MARCH – APRIL 2018
CLIENT: GRACELANDS, DAVID WILSON HOMES
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.
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 isno room to stockpile material.
This case study presents a successful approach to addressing unstable ground conditions thathindered building work. By using SMR through our in-situ application method, the ground waseffectively stabilised, surpassing the required CBR value and enabling the safecommencement of building activities.
The project faced a significant setback as unstable ground conditions prevented the initiationof vibro piling. A lack of suitable crushed material in the area necessitated a review oftraditional methods for creating a piling platform with a minimum CBR value of 30%.Approximately 10,000m3 of area required stabilization, with a site visit revealing a moisturecontent of 46%.
THE SMR SOLUTION
Upon soil analysis confirming high moisture content, a decision was made to modify andstabilize the ground using SMRs In-situ application technique. This involved a single 300mmpass with an SMR modifying Binder, followed by a pass of SMR Proprietary Binder to a 300mmdepth. The Binder was rotavated into the ground before being compacted with a 13 ton singledrum roller.
After 48 hours of curing, the results indicated a minimum CBRvalue of 30%, with an average of 43% after 7 days of curing.Exceeding the CBR requirements allowed the safe deploymentof a 54-ton Vibro piling unit, facilitating the continuation of thebuilding program without further delay.
Ground Stabilization: Successful stabilization of unstableground conditions.
CBR Value Achievement: Exceeded the required CBR value,enabling safe building work.
Building Program Continuity: Facilitated the use of Vibro pilingunit, avoiding further project delays.
The application of SMR effectively addressed the instabilityissue, achieving the necessary CBR value and enabling theproject to progress without interruption.
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