Project: M42 - Junction 3A to 4 (North and South Carriageway) | Client: Costain Ltd and AMEY | Duration: 23/11/2013 - 21/01/2014 | Suppliers: AJ Wilcock Holeformers, ACCUMIX, and Titan Plant Hire Ltd

Scope: Full Depth (255mm) bay replacements in PQ-X concrete.


GCEL was appointed to carry out 1310 m2 full depth concrete repair to both carriageways of M42 between junctions 3A to 4. The scope of work includes removal of existing dowelled concrete bays and reinstating using PQX (High early strength concrete) overnight. The concrete bays (4m x 5m x 255mm) were saw cut into smaller section and lifted out using vacuum lift device attached to a wheeled excavator. Repairs were carried out to lean mix, new dowel bars were drilled and installed using EZ 210B SRA drill prior to reinstating using PQX concrete mixed on site,  using a volumetric mixer.

To accelerate curing of concrete, heated blankets were used. Between 3-4no. concrete bays were repaired on a regular basis each night between working hours 21:00 to 05:00 (next morning). The carriageways were successfully open to normal traffic at 06:00 AM every morning during the project duration.

Project Completion Date: 21/01/14

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