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List of products by author: T. Dalmalm
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Inner lining concept for the Stockholm Bypass
Abstract: The Stockholm bypass will be situated west of Stockholm city center to decrease the north-south road traffic through Stockholm. The bypass consists of more than 50 km of rock tunnels which will be cement grouted to fulfill the ingress demands. In addition to the grouting an inner lining will be installed to protect from ice formations, which in cold countries are common in...
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Multi-hole grouting, field tests to increase the efficiency of the grouting production process
Abstract: Time is a critical factor for tunnel construction and if grouting is required the time efficiency of the grouting procedure is essential for the overall cost of the tunnel construction. In this paper initial field tests of multi-hole grouting are reported and the possible time saving actions described. The test shows that the handling time of the equipment can be...
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Nozzleman Qualifications - An Increased Focus on Concrete Spraying Performance
Abstract: During the last 10 years the tunneling and mining industries have had greater focus on the quality, costs and above all the safety around concrete spraying works. In 2009 the international industry group EFNARC established the Nozzlemen Certification Scheme – a certification that was intended to fill the qualification and accreditation gap existing for sprayed concrete operators, so called...
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