Kingsbrook Aylesbury

• Adoptable Roads identified as suitable for Capping replacement by Cement Stabilisation of the site won excavated material.
• In-situ treatment of the material in 300mm deep layer with 2.0% - 3.0% Cement Addition
• Client requirements 95% Compaction and 15% CBR
  Design Criteria
  • MCHW Series 800 (clause 810) for capping and sub-base layers
  • CD 225 (Rev 1) and CD 226 for pavement foundations

• The project programme was challenging mainly due to the high loading on the 300mm layer.
• Binder spreading, water delivery and mixing had to be very precise to ensure the design CBR would be achieved.
• The project has a very stringent test and compliance schedule. All target MCV and CBR test were taken daily
• Poor CBR % at formation level would require careful working with heavy machinery not to damage the formation.

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.
• Our site team set to work with the MC team to develop a system to allow both earthworks and stabilisation to progress efficiently.

Stabilised Capping Replacement Tested for compliance with the specification and design.

The works had numerous advantages to this site.

• Utilise site won material from Excavations - 100%
• Reduction of Primary Aggregates for Road Construction - 70%
• Reduction of Lorries from the surrounding roads – 70%
• Cost Saving over imported Agg and disposal of excavated material min 40%

Download Kingsbrook Aylesbury Case Study