2025

• Holter, Karl Gunnar; Hyllseth, M.; Strømsvik, Helene; Bøyeie, K.M.; Minsaas, C.M.. (2025) Dual stage pre-excavation grouting methodology with a completely dry tunnel as target. Experiences with an innovative approach during the construction of the Hestnes railroad tunnel, Norway.
  Academic chapter/article/Conference paper
• Lindgård, Anders; Rønning, Sigbjørn; Holter, Karl Gunnar; Vassenden, S.; Gauteplass, I.H.. (2025) Impact of pre-excavation grouting on the stability of a sensitive clay slope.
  Academic chapter/article/Conference paper

2024

• Almenara, Jorge Manuel Terron; Skretting, Erlend; Holter, Karl Gunnar; Høien, Are Håvard. (2024) Design of Rock Support in Hard and Layered Rock Masses Using a Hybrid Method: A Study Based on the Construction of the New Skarvberg Tunnel, Norway. Rock Mechanics and Rock Engineering
  Academic article
• Penaloza, Guillermina Andrea; Holter, Karl Gunnar; Vignisdottir, Hrefna Run; Grøv, Eivind. (2024) Greenhouse gas emission reduction from innovative sprayed concrete.
  Academic chapter/article/Conference paper
• Almenara, Jorge Manuel Terron; Skretting, Erlend; Holter, Karl Gunnar. (2024) Design of Rock Support in Low Overburden and Hard Rock Conditions with the use of Rock Mass Classification Systems and Numerical Analyses: a Study Based on the Construction of the Hestnes Railway Tunnel, Norway. Rock Mechanics and Rock Engineering
  Academic article
• Almenara, Jorge Manuel Terron; Holter, Karl Gunnar; Jakobsen, Pål Drevland; Aagaard, Bent; Lund, Alf Kristian. (2024) Permanent tunnel support with reinforced shotcrete arches and forepoling in over-consolidated till and weathered rock. A case study based on the construction of the Bergås tunnel, Norway. Tunnelling and Underground Space Technology
  Academic article

2023

• Terron-Almenara, Jorge; Holter, Karl Gunnar; Høien, Are Håvard. (2023) A Hybrid Methodology of Rock Support Design for Poor Ground Conditions in Hard Rock Tunnelling. Rock Mechanics and Rock Engineering
  Academic article
• Sjøbakk-Moe, Eivind; Holter, Karl Gunnar; Strømsvik, Helene. (2023) Waterproof sprayed concrete with improved sustainability performance.
  Academic chapter/article/Conference paper
• Holter, Karl Gunnar; Martius-Hammer, Tor Arne; Trussell, Nicholas Henry. (2023) New development of sprayed concrete with improved waterproofing, durability and sustainability performance.
  Academic chapter/article/Conference paper

2022

• Mery, Cristobal Javier Manquehual; Jakobsen, Pål Drevland; Holter, Karl Gunnar; Weerdt, Klaartje De; Danner, Tobias Alexander; Bruland, Amund. (2022) Comparison of the condition of steel fiber-reinforced shotcrete with water-glass and alkali-free activators after more than 20 years of service in a subsea road tunnel. Construction and Building Materials
  Academic article
• Langford, Jenny; Holmøy, Kristin; Hansen, Tom Frode; Holter, Karl Gunnar; Stein, Eivind. (2022) Analysis of water ingress, grouting effort, and pore pressure reduction caused by hard rock tunnels in the Oslo region. Tunnelling and Underground Space Technology
  Academic article
• Manquehual, Cristobal Javier; Jakobsen, Pål Drevland; Holter, Karl Gunnar; Weerdt, Klaartje De; Bruland, Amund. (2022) Investigation of leaching in steel fiber-reinforced shotcrete exposed to fresh and saline groundwater in a subsea road tunnel. Cement and Concrete Research
  Academic article

2021

• Holter, Karl Gunnar; Strømsvik, Helene; Grøv, Eivind. (2021) Material Technology and Spray-Application Development for Waterproof and Durable Sprayed Concrete Linings. Goals And Background for the Supercon Research Project, Norway.
  Academic chapter/article/Conference paper

2017

• Nilsen, Bjørn; Jakobsen, Pål Drevland; Holter, Karl Gunnar. (2017) Proceedings of the ITA World Tunnel Congress 2017. NFF - Norwegian Tunnelling Society NFF - Norwegian Tunnelling Society
  Academic anthology/Conference proceedings

2016

• Holter, Karl Gunnar; Geving, Stig. (2016) Moisture Transport Through Sprayed Concrete Tunnel Linings. Rock Mechanics and Rock Engineering
  Academic article
• Holter, Karl Gunnar; Smeplass, Sverre; Jacobsen, Stefan. (2016) Freeze–thaw resistance of sprayed concrete in tunnel linings. Materials and Structures
  Academic article
• Holter, Karl Gunnar. (2016) Performance of EVA-Based Membranes for SCL in Hard Rock. Rock Mechanics and Rock Engineering
  Academic article

2014

• Holter, Karl Gunnar. (2014) Loads on sprayed waterproof tunnel linings in jointed hard rock: A study based on Norwegian cases. Rock Mechanics and Rock Engineering
  Academic article
• Holter, Karl Gunnar; Nilsen, Bjørn; Langås, Christine; Tandberg, Maren Kristine. (2014) Testing of sprayed waterproofing membranes for single shell sprayed concrete tunnel linings in hard rock.
  Academic chapter/article/Conference paper