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Agyekum, B, Kissi, E, Yamoah Agyemang, D and Badu, E (2018) Examining barriers for the utilization of non-traditional cost estimating models in developing countries. Journal of Engineering, Design and Technology, 16(06), 814–27.

Aouad, R and Amara, I (2018) Influence of the cutting condition on the wear and the surface roughness in the steel AISI 4140 with mixed ceramic and diamond tool. Journal of Engineering, Design and Technology, 16(06), 828–36.

Chen, Y and Yang, Z (2018) Validity and reliability of rating scales for subjective breathing resistance of wearing respirators. Journal of Engineering, Design and Technology, 16(06), 837–49.

De Silva, N, Rathnayake, U and Kulasekera, K (2018) Under-reporting of construction accidents in Sri Lanka. Journal of Engineering, Design and Technology, 16(06), 850–68.

Kulkarni, S, Edwards, D J, Parn, E A, Chapman, C, Aigbavboa, C O and Cornish, R (2018) Evaluation of vehicle lightweighting to reduce greenhouse gas emissions with focus on magnesium substitution. Journal of Engineering, Design and Technology, 16(06), 869–88.

Nawfal, S and Ali, F (2018) The acceleration of 3D graphics transformations based on CUDA. Journal of Engineering, Design and Technology, 16(06), 925–37.

Ndokwana, A and Fore, S (2018) Economic assessment of bioethanol production from maize in South Africa. Journal of Engineering, Design and Technology, 16(06), 973–94.

Owusu-Manu, D, Edwards, D J, Kukah, A, Parn, E A, El-Gohary, H and Hosseini, M R (2018) An empirical examination of moral hazards and adverse selection on PPP projects. Journal of Engineering, Design and Technology, 16(06), 910–24.

Romanello, G (2018) Stability analysis of mobile cranes and determination of outriggers loading. Journal of Engineering, Design and Technology, 16(06), 938–58.

Senaratne, S, Mirza, O, Lambrousis, G and Fernandez-Soncini, A (2018) Structural applicability of steel fibre-recycled aggregate concrete in construction. Journal of Engineering, Design and Technology, 16(06), 959–72.

  • Type: Journal Article
  • Keywords: Construction industry; Recycled aggregate; Steel fibre; Sustainable materials;
  • ISBN/ISSN: 1726-0531
  • URL: https://doi.org/10.1108/JEDT-06-2017-0062
  • Abstract:
    The use of recycled aggregates (RA) has been explored to lead to a more sustainable future. The paper investigates on a sustainable concrete mix incorporating steel fibres (SF) and RA to provide an alternative to traditional natural aggregate concrete for structural applications. This paper aims to explore the feasibility of combining RA and SF in structural applications in terms of strength, cost and industry perspectives. Design/methodology/approach A mixed research approach is established with two phases. Phase 1 aims to identify an optimum material combination that satisfies the structural strength requirements and to identify the costs in its optimum combination. Phase 2 involves qualitative interviews with key industry parties to explore their perspective and identify various enablers and barriers for this material. Findings The optimum combination of 30 per cent RA replacement and 0.3 SF volume content has been identified through laboratory testing. It was noted that there would be a direct additional cost because of SF addition. However, when other benefits such as reduction in transportation costs and landfill dumping fees were considered, an overall cost saving could be achieved. Consequently, the key industry practitioners’ perspectives for this material have been gathered through qualitative interviews. Several enablers and barriers were identified through these interviews. Originality/value Even though, there are various research attempts on improving RA for structural purpose by adding different additives, a holistic study that incorporate cost effects and the industry perspectives was lacking and is addressed in this current study. In particular, industry perspectives lead to refocus research directions and get closer to the realisation of a sustainable construction industry.

Witmer, A (2018) Contextual engineering assessment using an influence-identification tool. Journal of Engineering, Design and Technology, 16(06), 889–909.