Case Study video:
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WCML Shugborough Tunnel shaft and annulus void filling
Summary Geobear was approached by Story Contracting to design a solution to fill the voids in and around the shafts and behind the tunnel lining of the West Coast Mainline Shugborough Tunnel in Stafford. The 1847 tunnel had deteriorated over time and there was a significant risk of collapse. Download PDF Version Introduction Shugborough Tunnel, […]
Read moreGarage stabilisation
Garage Stabilisation Geobear was contacted by a customer whose garage, attached to his property, had experienced significant movement over time. The movement had resulted in evident cracking in the walls of the property and sinking of the slab. The cause of the problem was the compaction of the existing fill over time and weakening soils […]
Read moreQueens Hotel Cheltenham Void Filling
Background The Queens Hotel was opened in 1838 on the site formerly known as the Sherborne or Imperial Spa. The hotel is located on The Promenade, Cheltenham, Gloucestershire, GL50 1NN and was opened in 1838, it has been listed as a Grade II English Heritage building since 1955. A large sinkhole was uncovered under the […]
Read moreMonkey Island Estate – Stabilisation and Slab Lifting
Project Scope In 2017 Monkey Island Estate, owned by Wessex Water was looking to invest in the property and bring it back to sustainable use. Plans were submitted to demolish the existing outbuildings, renovate the Pavilion and Temple buildings and create a new building for staff accommodation, an energy centre, and a bin store. The […]
Read moreSinking areas of railway depot were repaired by geopolymer injection
Customer situation and background The Ilmala railway depot, located in Helsinki near Finland’s largest and busiest railway station, had problems with soil subsidence. The Ilmala depot is located in an area that was originally a swamp but was later turned into a landfill. The landfill was in use until 1963, and after several years of […]
Read morePort of Hernesaari – Internal erosion control
Geobear’s solutions resolved erosion issues that disrupted the port’s operations Hernesaari Port receives thousands of cruise passengers from around the world each year, and passenger numbers are expected to grow further in the coming years. However, the corner of the cruise pier in the harbour area had begun to sink repeatedly into the pits. This […]
Read moreVibration of Assembly Factory
Problem Problems with the vibration of two production line machines had been observed in the production facilities of a company specialising in the assembly of electronics and mechanics. The vibration was found to be caused by the natural frequency of the soil and floor under the machines. Because the assembly of the electronics requires extreme precision, the […]
Read moreVoids beneath busy train track was successfully filled with geopolymer resin
Background The railway section between Seinäjoki and Oulu is one of the busiest railway sections in Finland, and it is also part of the entire trans-European TEN-T transport network. In the middle of this section of the line is Ylivieska station, which is an important crossing and stopping point for both passenger and freight traffic. […]
Read moreSheet Pile Water Sealing Poland
Objective There was a planned residential building with underground garages in Krakow, Poland. The construction of a multi-storey residential building was part of the second stage and required a deep excavation for a two-story underground car park in unfavourable conditions such as a high groundwater table and a thick layer of compacted gravel. The excavation […]
Read moreEton College Stabilisation
Geobear were recently contracted to provide stabilisation and ground improvement works for a refurbishment project at Eton College. This video describes the works.
Read moreGuildford Council – Settlement of ground-bearing floor slab
Geobear was contacted by Guildford Council to provide a solution for a distorted floor slab which had settled differently, up to 35mm. A design was prepared and quotation provided, within 8 days of referral. The design was to inject a specialist geopolymer in a grid pattern to 0.5m below the floor slab. The expansive geopolymer […]
Read moreNewnham Hill Bridge Approach
Following structural inspections of the bridge on Newnham Hill, which spans the A45 at Daventry, it was found that the approach had settled and was becoming a safety issue for road users. KierWSP, who maintain that section of highway on behalf of Northamptonshire Highways, required a solution that would address the issue caused by badgers […]
Read moreSwanage Sea Wall Void Filling
Swanage is a coastal town in the South West of England. Geobear was contacted by Dorset County Council to deliver a solution to fill voids adjacent to the town’s historic seafront wall. Following a condition assessment carried out by WSP, whereby a visual inspection was supplemented by a geophysical survey, areas of potential voiding were […]
Read moreConcrete bay stabilisation – M54 J3-J2: geopolymer injection
During routine inspection work Highways England identified that 39 concrete bays required stabilising and releveling treatment using a Geobear geopolymer injection solution. The M54 J3-J2 eastbound scheme was completed in July 2020 and involved pavement maintenance works to address historical concrete carriageway defects. The concrete bay stabilisation work was completed with minimal pre-scheduled closures. Geobear […]
Read moreWater Leaks at Cobbinshaw Reservoir repaired with geopolymer
Water leaks were occuring at a reservoir in Scotland. Geobear were contacted to help with water leaking from some of the joints between concrete at Cobbinshaw Reservoir, the water leaks could be stopped using Geobear’s geopolymer which acts as a water sealant. Background Cobbinshaw Reservoir is a site of special scientific interest (SSSI) located in […]
Read moreShugborough Rail Tunnel Void Filling
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Read moreRock Village Hall – slab re-leveling
Rock Village Hall was constructed between 2004 – 2006, it’s a flagship building that demonstrates best practice in sustainable construction. The hall uses recycled materials to a considerable degree, including the use of recycled hemp for insulation, and recycled plastics for the underground drainage. Rainwater is collected and used in the lavatories, and a ground […]
Read moreSubsidence Solution for blocks of flats – Oxford City Council
Background Clay shrinkage subsidence, exacerbated by tree root influence, had caused significant subsidence damage to two neighbouring blocks of flats in Oxford. It is considered the damage commenced during the severe summer drought of 2018, with further movement during the dry summer of 2019. The damage was considered progressive and seasonal. Site Investigations were instigated, […]
Read moreParadigm Homes – slab and perimeter wall stabilisation
Background Paradigm Homes is a charitable housing association who manage over 15000 properties in the south-east. Two flats in one of their properties in High Wycombe had suffered from severe structural movement during the extended dry spell in 2018-19, which meant the tenants had to be re-homed. The property was part of a block used […]
Read moreTesco Distribution Centre, Merseyside – Fuel Island Slab Re-leveling
Tesco Distribution Centre – Slab Re-leveling Background This Tesco distribution centre has two large submerged diesel fuel tanks used for refuelling the delivery vehicles operating to and from the distribution centre. On one of the fuel islands the entry and exit slabs had settled up to 25mm, both slabs were also rocking and close […]
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