Petar Filev

WATERPROOFING Our specialized division for all kind of sealing ope­ra­ti­ons in under­ground struc­tures against pres­su­rized and non-pres­su­rized water. Main areas of appli­cation include natio­nal and inter­na­tio­nal large-scale pro­jects in tun­neling and infra­struc­ture. KEY AREAS OF EXPERTISE: - Developing concepts and solutions - Sealing of underground structures - Water and frost protection - Sealing of hydraulic and environmental structures - Rehabilitation works INJECTIONS AND GROUTING The state-of-the-art equipment for injection opera­tions in under­ground construc­tion, excavation and sub­soil work has a number of appli­ca­tions. These include also injec­tions into hard or uncon­so­li­da­ted rock using cemen­ti­tious and chemi cal injec­tions for con­tact, sea­ling and con­so­lida­tion works, as well as pas­sive pre-stres­sing of con­crete inner shells in pen­stock gal­leries. KEY AREAS OF EXPERTISE: - Developing concepts and solutions - Monitoring and Data management - Compensation Grouting and Ground Stabilisation - Curtain Injection and Contact Grouting - Injections into hard rock and unconsolidated rock - Rehabilitation works - Permeation Grouting