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Clay Shrinkage and Lifting & Leveling the Property
Background A property investor purchased a four-storey building, including a basement, in Hamilton Park, Islington, London, with the intention of converting it into four apartments. The building suffered from significant structural issues due to clay shrinkage, causing subsidence, rotation, and separation from the neighbouring property. The client required a solution to improve the ground beneath […]
Read moreDual Carriageway Ground Improvement Scheme
Background The dual carriageway of a primary A road connecting London to the north experienced significant deterioration due to underlying soil instability. This resulted in extensive cracking and potholes, despite multiple resurfacing efforts. Investigations revealed that voids and subsidence beneath the rigid road compromised its structural integrity. Geobear was engaged to provide a targeted, efficient […]
Read moreCulvert Void Fill – Derby Substation, Sowter Road
Ultimate Client: Western Power Distribution Contractor: O’Connor Utilities Ltd Duration: 4 shifts Solution Provided: Structural Void Filling using Geopolymer 2640 Background & Challenge A 100-year-old culvert running beneath Sowter Road in Derby was identified as a potential risk due to uncertainties regarding its load-bearing capacity. The culvert’s structural integrity was of particular concern as a […]
Read moreCare Home Ground Improvement, UK
Resolving Subsidence in a Car Park at Bupa Nairn House Care Home, Enfield Background Bupa Nairn House Care Home, located in Enfield, experienced significant subsidence in a section of its car park. This issue, primarily identified near the retaining wall and drainage chambers, had led to surface deformations, including cracks and void formations. The subsidence […]
Read moreSewer pipe belly lifting on new build development
Sewer pipe belly lifting on new build development Overview Client: UK New Build Contractor Location: North West Project Focus: Ground strengthening and pipe lifting for failing shallow sewers beneath a road network on a new-build housing estate. The Challenge: Structural Integrity in Soft Ground A sewer system constructed beneath a road on a new housing […]
Read moreRoad of Remembrance Badger Sett Filling in Embankment
Road of Remembrance Badger Sett Filling in Embankment Background Kent County Council approached us with an urgent issue involving a landslip in Folkestone, Kent, near a highway embankment. The embankment had failed due to a combination of factors, including extensive badger setts that had destabilised the area. The landslip caused soil to cover the road […]
Read moreStructural Void Filling the Sea Wall at Dovercourt
Structural Void Filling Behind the Sea Wall at Dovercourt Background The sea defence at Dovercourt, spanning approximately 300 metres, is formed of concrete blocks that have experienced structural failures over time. Persistent water ingress and washout have led to the formation of voids behind the wall, undermining its stability. Despite regular patch repairs, these voids […]
Read moreGround Improvement at York St. John University
Ground Improvement at York St. John University Background York St. John University embarked on the second phase of converting its old sports hall into a functional space for academic and medical purposes. Phase one, completed two years prior, transformed two-thirds of the hall into classrooms. The ongoing phase aimed to repurpose the remaining area by […]
Read moreGround Improvement on a major A road
Background A section of a busy dual carriageway, near a town in the south of England experienced ground instability, leading to subsidence and voids beneath the carriageway. The client required a comprehensive ground improvement plan to address these issues that were identified using Ground Penetrating Radar (GPR) and Dynamic Cone Penetration (DCP) tests. A solution […]
Read moreChorley Tunnel Slab Track Lifting
A section of track at Chorley Tunnel in the northwest of England was subject to line speed restrictions due to subsidence. The section in question was at the end of the slab track running through the Chorley Tunnel, a line notable for its electrification scheme in the previous decade. The subsidence was caused by a […]
Read moreRail Ballast Binding
Background The Glenn Douglas railway section, adjacent to a loch with a steep embankment, relied on a King Post retaining wall to hold the ballast in place. Over time, the wooden sleepers forming this wall deteriorated, leading to gaps that caused the ballast to erode down the embankment, jeopardizing track stability. Problem The primary issue […]
Read moreSubsidence Repair for Harrow Council
Subsidence Repair for Harrow Council – Saving £500k through a new approach to subsidence repair A block of flats with 12 units, owned and managed by Harrow Council, had suffered from structural movement due to the clay shrinking beneath the foundations. This resulted in cracks in the brickwork, internal walls and ceilings meaning it would […]
Read morePermeation Grouting for Flood Defence Scheme in Otley
Case Study: Permeation Grouting for Flood Defence Scheme in Otley Project Overview Location: Otley, West Yorkshire Project: Flood Defence Scheme Client: Bam Nuttall Objective: To explore the incorporation of permeation grouting to effectively seal a 6m gap in the sheet piles, avoiding excavation and reducing risks to a historic bridge. Background The flood defence structure […]
Read moreTunstall Reservoir Void Fill
Tunstall Reservoir Void Fill Case Study Project Overview The client had a requirement at Tunstall Reservoir to fill a disused adit tunnel to prevent potential structural issues and ensure the long-term stability of the reservoir infrastructure. Geobear was commissioned to design a geopolymer injection solution to fill the difficult to access void. Project Scope and […]
Read moreGround Improvement Works for Tynybryn Bridge
Tynybryn Bridge is one of the first Active Travel Bridges in South Wales to use a light-weight fibre reinforced polymer (FRP) deck solution with a localised ground improvement system of injected geopolymers to improve the ground bearing. Using Geobear geopolymer injection as a pre-construction activity rather than a post-remedial solution has not been used like […]
Read moreBookham Wingwall Ground Improvement
Bookham Road Underbridge Wingwall Ground Improvement Project Project Overview Client: Dyer & Butler Location: Bookham Road Underbridge, Surrey Challenge A bridge wingwall in Bookham, Surrey had experienced movement and the client needed a fast non-disruptive solution to stabilise the asset. The site comprises a single-span underbridge (Bookham Road under rail) and is located immediately to […]
Read moreWing Wall Ground Improvement in softened clay soil
Treatment of Suspected Softened Clays Below SW Wing Wall Project Overview The project involves the stabilisation of a bridge abutment wingwall and the treatment of suspected softened clays below the SW wing wall at the Boots Enterprise Zone in Nottingham. This intervention was necessary to ensure the structural integrity and longevity of the infrastructure. Scope […]
Read moreBallasted Railway Level Crossing Ground Improvement
Ballasted Railway Level Crossing Ground Improvement Project Overview Location and Background The project focuses on a ballasted railway level crossing located on the South West Mainline. The crossing is part of a high-speed rail line with a line speed of 100 miles per hour and accommodates approximately ten EMGTP (Equivalent Million Gross Tons per annum) […]
Read moreVoid Filling Colt Cragg Reservoir
Project Overview Location: Colt Crag Reservoir, Hexham, Northumberland Client: Esh Group – Stantec Main Contractor: Northumberland Water Project Duration: 1 week Introduction Geobear was contracted to provide a void-filling solution for an abandoned spillway tunnel at Colt Crag Reservoir. This project required the use of a specialist geopolymer design, delivery team and equipment to ensure […]
Read moreShipyard Ground improvement
Geopolymer Injection at the Dock: Ground Improvement to Facilitate Loads Overview A prestigious yacht manufacturer faced significant challenges at their dockyard. Accustomed to handling the increasing size and weight of super yachts, their facility began experiencing uneven sinking of concrete slabs due to water ingress and the subsequent softening of soils. This issue threatened the […]
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