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This document provides information on rock grouting projects using polyurethane (PUR) resins in Iceland and Turkey. It summarizes projects from 1993-2009 that involved grouting in extreme geological and weather conditions. PUR and other resins like urea-silicate were used for grouting to improve rock stability, seal cracks, and fill cavities in complex basalt formations with high water flows. The document discusses the chemical properties and applications of one-component and two-component PUR resins as well as urea-silicate hybrid resins. It also summarizes specific projects in Iceland that demonstrated the effectiveness of PUR for grouting in cold temperatures and high water pressures/flows.
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This document contains biographical information about Tomasz Najder and details two tunneling projects he worked on in Iceland:
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This document is a 27 page report on the sealing of shotcrete tunnel linings for the Södra Länken project in Stockholm using polyurethane resins. It describes the project, shows photos of the tunnel construction, and details the process of drilling holes in the rock and using pumps to inject two-component polyurethane resins to seal cracks in the lining and grout the surrounding rock.
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Tomasz Najder is a senior consultant and grouting engineer based in Sweden. He has over 30 years of experience in tunneling projects. Some of his roles include senior grouting engineer for the Kárahnjúkar Hydroelectric Project in Iceland and vice president of Stabilator AB in Sweden. He specializes in grouting activities like pre-grouting, curtain grouting, concrete repairs, and sealing tunnels. Tomasz Najder provides consulting services and recommendations on grout compositions, procedures, and equipment for various tunneling and dam projects internationally.
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Tomasz Najder is a civil engineering consultant with over 40 years of experience in tunneling, mining, and related fields. He has worked on numerous major infrastructure projects around the world, including tunneling projects in Iceland, Poland, and Sweden. Some of his most notable work includes serving as the grouting expert on the Breiđalsheiđi and Botnsheiđi Road Project in Iceland, which involved tunneling through difficult rock conditions, and working as the senior grouting engineer on the massive Kárahnjúkar Hydropower Project in Iceland, which included over 70km of tunneling.
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This document contains a resume for Tomasz Najder, a senior consultant and grouting contractor. It summarizes his role on two tunneling projects in Iceland from 2007-2009. The Siglufjörður and Ólafsfjörður tunnels involved mining through basalt rock with varying water inflows. Najder's responsibilities included pre-grouting, refilling caverns, post-grouting, and stopping water under high pressure. The document provides details on the tunnel lengths, diameters, gradients, and geology encountered on each project.
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Tomasz Najder worked as a senior consultant on an underground tunnel repair project in Dammam, Saudi Arabia from 2008-2009. The project involved inspecting and repairing cracks, joints, and leaks in the tunnel structure through grouting methods. Najder provided engineering services and developed method statements for the grouting work. He also proposed a monitoring system to track the tunnel's performance over several years after completion. The document provides details on Najder's role, the tunnel repair scope, grouting activities, and engineering drawings and photos from the site.
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The document describes the Héðinsfjarðargöng Project, which involved constructing a 3,300m tunnel using an Earth Pressure Balance Type TBM. This was the first tunnel ever built between two continents, connecting Iceland and Greenland under the sea. During construction, leakage was observed at the face of the Ólafsfjördur Tunnel, which was part of this project. The document also discusses some of the speaker's past projects involving slope protections, gabion walls, and waterproofing systems.
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Tomasz Najder is a civil engineering consultant with over 40 years of experience in tunneling, mining, and related fields. He has worked on numerous major infrastructure projects around the world, including tunneling projects in Iceland, Poland, and Sweden. Some of his most notable work includes serving as the grouting expert on the Breiđalsheiđi and Botnsheiđi Road Project in Iceland, which involved tunneling through difficult rock conditions, and working as the senior grouting engineer on the massive Kárahnjúkar Hydropower Project in Iceland, which included over 70km of tunneling.
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