Bbv Sublot 1B Tunnel Grout Treatment Tender, United Kingdom - 125886105

Procurement Summary

Country: United Kingdom

Summary: Bbv Sublot 1B Tunnel Grout Treatment

Deadline: 15 Sep 2025

Other Information

Notice Type: Tender

TOT Ref.No.: 125886105

Document Ref. No.: C4N99370407

Financier: Self Financed

Purchaser Ownership: Public

Tender Value: GBP 2500000

Purchaser's Detail

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Tender Details

"Ground Treatment "



The SC (Subcontractor) will assess the findings of the probe hole investigation and will develop the

grout treatment strategy to be followed with a scope to minimize any excess water ingress during CP

excavation and improve the ground stability.



Grouting operations will include stage permeation grouting on max 1m steps, with the use of packers.

Subcontractor based on ground and ground-water conditions as revealed from ground investigation

(probe holes) shall develop the grouting strategy. The strategy will include as a minimum but not

exclusively the following:

• A grouting pattern of primary and secondary on the periphery of CP profile

• Drilling diameter, orientation, and lengths of each grouting hole

• Bottom-up grouting stages with the use of packers. The grouting stages should not exceed the

length of 1m.

• In case required (unstable ground) Subcontractor may need to make use of a tube a

manchette TAM (sleeve pipes) system to perform the grouting. In this case the strategy should

be developed accordingly.

• Mix design(s) of the grout injection

• Max Pressure and max Volume criteria for stopping each grouting stage

• Tertiary drilling holes in case primary and secondary do not reach the target criteria.

• As built records grouting locations lengths stages grout consumptions and max pressure. "
Location Of Contract : North East, West Midlands, London, Yorkshire and the Humber, East Midlands, East of England, North West, South West
Industry : Grout - 44831400 Grouting work - 45262340
Value Of Contract : £1, 000, 000 to £2, 500, 000
Published Date : 8 September 2025
Closing Date : 15 September 2025

Documents

 Tender Notice