Browsing NTNU Open by Author "Trussell, Nicholas Henry"
Now showing items 1-7 of 7
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Effect of Set Accelerator on Capillary Suction and Porosity of Concrete – Cast Samples with Constant Water/Binder Ratio
Trussell, Nicholas Henry; Cepuritis, Rolands; Jacobsen, Stefan (Peer reviewed; Journal article, 2022)Alkali-free set accelerators are added at the nozzle to ensure rapid set of wet sprayed concrete. The accelerator affects the strength development, porosity and transport properties, and hence the durability, of the sprayed ... -
Effect of Set Accelerator on Properties of Wet Sprayed Concrete
Trussell, Nicholas Henry; Cepuritis, Rolands; Jacobsen, Stefan (Peer reviewed; Journal article, 2022)This paper describes sprayed concrete experiments varying the set accelerator dose. Literature on the hydration of cement with modern alkali-free set accelerators is reviewed and two full scale wet spraying experiments ... -
Macroporosity and water penetration measurements of sprayed concrete: Open vs closed macroporosity, size, shape, orientation and anisotropy
Hårr, Magne Stangeland; Kjeka, Gaute (Master thesis, 2022)Hensikten med oppgaven var å undersøke makroporøsitet og permeabilitet til sprøytebetong. Dette innebar å (1) undersøke åpen og lukket makroporøsitet målt med PF-metoden, (2) sammenligne luftinnhold i ulike betongtyper ... -
Macroporosity and water penetration measurements of sprayed concrete: Open vs closed macroporosity, size, shape, orientation and anisotropy
Hårr, Magne Stangeland; Kjeka, Gaute (Master thesis, 2022)Hensikten med oppgaven var å undersøke makroporøsitet og permeabilitet til sprøytebetong. Dette innebar å (1) undersøke åpen og lukket makroporøsitet målt med PF-metoden, (2) sammenligne luftinnhold i ulike betongtyper ... -
New development of sprayed concrete with improved waterproofing, durability and sustainability performance
Holter, Karl Gunnar; Martius-Hammer, Tor Arne; Trussell, Nicholas Henry (Chapter, 2023)Sprayed concrete in combination with rock bolts is successfully being used for permanent rock support in tunnels. The main shortcoming is that sprayed concrete alone is unable to function as the permanent waterproofing ... -
Review of Sprayability of Wet Sprayed Concrete
Trussell, Nicholas Henry; Jacobsen, Stefan (Peer reviewed; Journal article, 2020)Wet sprayed concrete quality is affected by more production factors than cast concrete, particularly due to the propulsion through the nozzle and the flash set caused by the set accelerator. Practitioners often use the ... -
Sprayed concrete - effect of accelerator, cracks and composition on compaction, porosity, strength and water transport properties
Trussell, Nicholas Henry (Doctoral theses at NTNU;2023:124, Doctoral thesis, 2023)The research described in this PhD thesis investigated key aspects of sprayed concrete material, with an intention of gaining knowledge to enable greater use of sprayed concrete for permanent tunnel linings. The two unique ...