Blar i TKD - Institutt for bygg- og energiteknikk på emneord "Concrete"

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    • Cost-optimal design of flexural concrete beam reinforced with FRP reinforcements 

      Tveit, Sigbjørn; Wilhelmsen, Martin; Lundeland, Vlad Aleksander; Kioumarsi, Mahdi (SynerCrete'18: Interdisciplinary Approaches for Cement-based Materials and Structural Concrete: Synergizing Expertise and Bridging Scales of Space and Time.;Vol. 1&2, Chapter; Chapter; Peer reviewed, 2018-10-22)
      Because of the non-ductile nature of FRP reinforcement, the convention of designing cross-sections with the flexure strength limited by reinforcement yield, as for steel, is not adequate. Although ACI 440.1R-15 gives ...

    • Effect of calcium stearate and aluminum powder on free and restrained drying shrinkage, crack characteristic and mechanical properties of concrete 

      Azarhomayun, Fazel; Haji, Mohammad; Kioumarsi, Mahdi; Shekarchi, Mohammad (Cement and Concrete Composites;Volume 125, January 2022, 104276, Peer reviewed; Journal article, 2021-10-05)
      Shrinkage is the volume change of concrete without influence of external forces. Drying shrinkage, which occurs after the concrete hardening, is one of the most important causes of the cracking in concrete members. In ...

    • Effect of Shrinkage Reducing Admixture on Drying Shrinkage of Concrete with Different w/c Ratios 

      Kioumarsi, Mahdi; Azarhomayun, Fazel; Haji, Mohammad; Shekarchi, Mohammad (Materials;Volume 13, Issue 24, Journal article; Peer reviewed, 2020-12-15)
      The reduction of the moisture content of concrete during the drying process reduces the concrete’s volume and causes it to shrink. In general, concrete shrinkage is a phenomenon that causes concrete volume to dwindle and ...

    • Experimental investigation of ASR-affected concrete – The influence of uniaxial loading on the evolution of mechanical properties, expansion and damage indices 

      Kongshaug, Simen Sørgaard; Oseland, Oddbjørn Wathne; Kanstad, Terje; Hendriks, Max; Rodum, Eva; Markeset, Gro (Construction and Building Materials;Volume 245, 10 June 2020, 118384, Journal article; Peer reviewed, 2020-02-19)
      The alkali silica reaction (ASR) in concrete causes internal localized swelling and micro cracking, which result in expansion and correlated deterioration of the concrete material. The stress state of the concrete is known ...

    • Intelligent Initiatives to Reduce CO2 Emissions in Construction 

      Farahzadi, Leila; Kioumarsi, Mahdi (Conference object, 2022-11-24)
      Global warming is one of the most important environmental issues that threatens the living on this globe so far. Carbon dioxide (CO2) emission from the construction industry is one of the major sources of emissions that ...

    • New empirical approach for determining nominal shear capacity of steel fiber reinforced concrete beams 

      Ahmadi, Masoud; Kheyroddin, Ali; Dalvand, Ahmad; Kioumarsi, Mahdi (Construction and Building Materials;Volume 234, 20 February 2020, 117293, Journal article; Peer reviewed, 2019-10-14)
      The main objective of this paper is to develop new design formulations for determining shear stress of steel fiber-reinforced concrete (SFRC) beams without stirrups using Gene Expression Programming (GEP) and Artificial ...

    • Numerical Investigation on Effects of Steel Fibers Content on Flexural Behavior of UHPCC 

      Halimi, Mojtaba; Kioumarsi, Mahdi; Bakhshi, Hossein; Sarkardeh, Hamed (Advances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications;Proceedings of the 7th International Conference on Structural Engineering, Mechanics and Computation (SEMC 2019), September 2-4, 2019, Cape Town, South Africa, Conference object, 2019-08-22)
      Ultra-High Performance Cementitious Composites (UHPCC) is a kind of concrete with specific characteristics that has lesser drawbacks in term of tensile strength and breakage. One of the methods for improving the mechanical ...

    • Numerical simulation of reinforced concrete cut-off wall with steel fibers under dam 

      Kazemi, Homa; Kioumarsi, Mahdi; Zarghani, Mohsen; Sarkardeh, Hamed (SynerCrete'18: Interdisciplinary Approaches for Cement-based Materials and Structural Concrete: Synergizing Expertise and Bridging Scales of Space and Time.;Vol. 1&2, Chapter; Chapter; Peer reviewed, 2018-10-22)
      One of the main components of dams is the cut-off wall, which any damage to this concrete structure could encounter the dam with danger. Flexural behavior of concrete is an important factor in view of creating and growing ...

    • Predicting Compressive Strength of Concrete Containing Recycled Aggregate Using Modified ANN with Different Optimization Algorithms 

      Kandiri, Amirreza; Sartipi, Farid; Kioumarsi, Mahdi (Applied Sciences;Volume 11, Issue 2, Journal article; Peer reviewed, 2021-01-06)
      Using recycled aggregate in concrete is one of the best ways to reduce construction pollu- tion and prevent the exploitation of natural resources to provide the needed aggregate. However, recycled aggregates affect the ...

    • Using intelligent system approach for shear strength forecasting of steel fiber-reinforced concrete beams 

      Kheyroddin, Ali; Ahmadi, Masoud; Kioumarsi, Mahdi (SynerCrete'18: Interdisciplinary Approaches for Cement-based Materials and Structural Concrete: Synergizing Expertise and Bridging Scales of Space and Time.;Vol. 1&2, Chapter; Chapter; Peer reviewed, 2018-10-22)
      Previous studies have shown that brittle failure in reinforced concrete buildings caused huge losses, both in human and economic terms. The appropriate use of steel fibers to a reinforced concrete beam can change the ...