JJMac | Marham Park Case Study

Project	JJM2642 – Adoptable Roads Stabilisation
Location	Marham Park Bury St Edmunds
Client	Orbital Homes
Key works delivered	Capping and Sub Base Replacement - Stabilisation
Project Duration	March 2022
Stabilised Area	5000 m²
Earthworks	By MC

Adoptable Estate Road identified as suitable for Capping replacement by Stabilising the site won excavated material.
Excavated material on site to be shifted and In-situ treat material laid in layers to provide a 9E or 9F Capping Layer - 450mm deep in two layers with Lime and Cement in Class 6R or 71 material to achieve min 15% CBR, 95% Compaction (2.5kg Rammer) & HSV’s > 60kPa.
Client requirements 95% Compaction and 30% CBR Non Frost Susceptibility.
JJMac tested and classified the material as suitable to achieve these requirements.

Marham Park Lime and Cement Stabilisation to Form Capping Quotation

The project was very challenging as the drainage had been installed prior to Stabilisation. Mellowing of the lime mix was min 24hrs, so time management and coordination was a key requirement from all parties on site to ensure an efficient operation and highest quality was always maintained. Poor CBR % at formation level would require careful working with heavy machinery not to damage the formation. Test Report

To overcome the project challenges set by the client, our team:

Worked with the client and advised on the findings of the site won material testing and classification.
The challenge was to spread and stabilise the excavated material by mixing with Cement and complying with the stringent testing schedule for the stabilised material.
Our site team set to work with the MC team to develop a system to allow both earthworks and stabilisation to progress efficiently.

Agile equipment utilised for the tight working conditions in and around the drainage Fendt tractor and Stehr Tractor mounted Stabilisation Mixer Marham Park 1

Stabilised Capping Replacement sealed with Bitumen Tack Coat

CBR Report on Finished Stabilised Surface Marham Park Test Report

The works had numerous advantages to this site.

Utilise site won material from Excavations from Modification.
Elimination of Primary Aggregates for making up levels.
Elimination of Primary Aggregates and Lorries from the surrounding Roads.

JMac are experts in Soil and Ground Stabilisation using lime, cement and other binder materials. Ground Stabilisation geotechnically enhances waterlogged or weaker soils and allows for greater weight bearing for construction materials. JJMac can provide an exceptionally cost-effective construction method for improving the weight bearing properties of any soil found on site and at a competitive rate.

Cost Saving

60%

Programme Reduction

70%

Vehicle Movements Reduction

95%

Imported Aggregate Reduction

90%

Material Sent To Landfill Reduced By

100%

Stone Layer Depth Reduction

75%

Marham Park

Embankment Stabilisation