Constitutive model for plain and fiber-reinforced lightweight concrete under compression

Article


Al-Naimi, H. and Abbas, A. 2023. Constitutive model for plain and fiber-reinforced lightweight concrete under compression. Structural Concrete. 24 (6), pp. 7625-7647. https://doi.org/10.1002/suco.202200646
AuthorsAl-Naimi, H. and Abbas, A.
Abstract

In this research work, experimental investigations of the compressive behavior of plain and fiber-reinforced lightweight-aggregate concrete have been carried out (this formed part of a wider study, which also examined tensile and flexural behaviors). Compression mechanical properties were established in the studies and a generic constitutive compressive σ–ε model for both plain and fibrous lightweight concrete was derived and validated against experimental results from the present studies and previous research in the literature involving different types of lightweight aggregates, concrete strengths, and steel fibers. The reliability of predictions of the constitutive model was also checked against existing fibrous concrete models. A fiber-reinforcing factor was also introduced taking into account the fiber volume fraction, fiber length and diameter, the number of fiber bends, and concrete compressive strength. As such, this was considered a better descriptor of the material than simply using the fiber volume fraction. The lightweight aggregates examined in the experimental study were recycled from fly ash waste and the fibers were hooked-ended with single, double, and triple bends (corresponding to DRAMIX steel fibers 3D, 4D, and 5D types, respectively). The fibers were added at volume fractions Vf of 1% and 2% and the experimental studies were carried out using standard cube and cylinder uniaxial compression test specimens. It was concluded that the higher the number of bends and fiber content, the more pronounced the enhancement provided by the fibers to the compressive strength and ductility responses. All steel fibers used in the present studies were found to significantly improve the compressive toughness, while only 4D and 5D fibers (i.e., those with double and triple end bends) enhanced the compressive strength by up to 12% and 15%, respectively. It was also found that the elastic properties of plain lightweight concrete remained unaffected by the addition of fibers.

JournalStructural Concrete
Journal citation24 (6), pp. 7625-7647
ISSN 1464-4177
Year2023
PublisherWiley for International Federation for Structural Concrete
Publisher's version
License
File Access Level
Anyone
Digital Object Identifier (DOI)https://doi.org/10.1002/suco.202200646
Publication dates
Online22 Aug 2023
PrintDec 2023
Publication process dates
Accepted16 Jul 2023
Deposited08 Dec 2023
Copyright holder© 2023, The Authors
Permalink -

https://repository.uel.ac.uk/item/8x04w

  • 99
    total views
  • 53
    total downloads
  • 2
    views this month
  • 5
    downloads this month

Export as

Related outputs

Rethinking social housing in terms of environmental sustainability: An empirical analysis
Emekci, S. and Abbas, A. 2023. Rethinking social housing in terms of environmental sustainability: An empirical analysis. Građevinar. 75 (11), pp. 1083-1093. https://doi.org/10.14256/JCE.3814.2023
Machine Learning-Based Prediction of Compressive Performance in Circular Concrete Columns Confined with FRP
Dhakal, N., Abbas, A., Ahmed, H. and Sharif, S. 2023. Machine Learning-Based Prediction of Compressive Performance in Circular Concrete Columns Confined with FRP. 3ICT 2023: International Conference on Innovation and Intelligence for Informatics, Computing, and Technologies. University of Bahrain, Bahrain 20 - 21 Nov 2023 IEEE. https://doi.org/10.1109/3ICT60104.2023.10391832
Artificial Intelligence Applications in Road Traffic Forecasting: A Review of Current Research
Khairi, S., Sharif, S., Apeagyei, A. and Abbas, A. 2023. Artificial Intelligence Applications in Road Traffic Forecasting: A Review of Current Research. 3ICT 2023: International Conference on Innovation and Intelligence for Informatics, Computing, and Technologies. University of Bahrain, Bahrain 20 - 21 Nov 2023 IEEE. https://doi.org/10.1109/3ICT60104.2023.10391677
Predicting Shear Capacity of RC Beams Strengthened with NSM FRP Using Neural Networks
Guler, O., Ahmed, H., Abbas, A. and Sharif, S. 2023. Predicting Shear Capacity of RC Beams Strengthened with NSM FRP Using Neural Networks. 3ICT 2023: International Conference on Innovation and Intelligence for Informatics, Computing, and Technologies. University of Bahrain, Bahrain 20 - 21 Nov 2023 IEEE. https://doi.org/10.1109/3ICT60104.2023.10391555
Development of Low-Carbon Lightweight Concrete Using Pumice as Aggregate and Cement Replacement
Abbas, A., Mahadevan, M., Prajapati, S., Ayati, B. and Kanavaris, F. 2023. Development of Low-Carbon Lightweight Concrete Using Pumice as Aggregate and Cement Replacement. SynerCrete'23 - International RILEM conference on synergising expertise towards sustainability and robustness of cement-based materials and concrete structures. Milos, Greece 14 - 16 Jun 2023 Springer. https://doi.org/10.1007/978-3-031-33187-9_27
Potential of Connected Fully Autonomous Vehicles in Reducing Congestion and Associated Carbon Emissions
Neufville, R., Abdalla, H. and Abbas, A. 2022. Potential of Connected Fully Autonomous Vehicles in Reducing Congestion and Associated Carbon Emissions. Sustainability. 14 (Art. 6910). https://doi.org/10.3390/su14116910
Reducing embodied carbon dioxide of structural concrete with lightweight aggregate
Kanavaris, F., Gibbons, O., Walport, E., Shearer, E., Abbas, A., Orr, J. and Marsh, B. 2021. Reducing embodied carbon dioxide of structural concrete with lightweight aggregate. Proceedings of the ICE - Engineering Sustainability. 175 (2), pp. 75-83. https://doi.org/10.1680/jensu.21.00021
Reducing the carbon footprint of lightweight aggregate concrete
Kanavaris, F., Gibbons, O., Walport, E., Shearer, E., Abbas, A., Orr, J. and Marsh, B. 2020. Reducing the carbon footprint of lightweight aggregate concrete. LowC3 2020. Online 05 - 06 Oct 2020 LowC3, University of Kentucky.
Ductility of Steel-Fibre-Reinforced Recycled Lightweight Concrete
Al-Naimi, H. and Abbas, A. 2019. Ductility of Steel-Fibre-Reinforced Recycled Lightweight Concrete. COMPDYN 2019: 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering. Crete, Greece. 24 - 26 Jun 2019 Institute of Structural Analysis and Antiseismic Research. pp. 4009-4023 https://doi.org/10.7712/120119.7203.19035
Behaviour of steel-fibre-reinforced concrete beams under high-rate loading
Abbas, A., Cotsovos, Demetrios M. and Behinaein, Pegah 2018. Behaviour of steel-fibre-reinforced concrete beams under high-rate loading. Computers and Concrete, An International Journal. 22 (3), pp. 337-353. https://doi.org/10.12989/cac.2018.22.3.337
A simplified finite element model for assessing steel fibre reinforced concrete structural performance
Abbas, A., Syed Mohsin, Sharifah M. and Cotsovos, Demetrios M. 2016. A simplified finite element model for assessing steel fibre reinforced concrete structural performance. Computers and Structures. 173, pp. 31-49. https://doi.org/10.1016/j.compstruc.2016.05.017
Shear behaviour of steel-fibre-reinforced concrete simply supported beams
Abbas, A., Syed Mohsin, Sharifah M., Cotsovos, Demetrios M. and Ruiz-Teran, Ana M. 2014. Shear behaviour of steel-fibre-reinforced concrete simply supported beams. Proceedings of the ICE - Structures and Buildings. 167 (9), pp. 544-558.
Statically-Indeterminate SFRC Columns under Cyclic Loads
Abbas, A., Mohsin, Sharifah, Cotsovos, Demetrios and Ruiz-Teran, Ana 2014. Statically-Indeterminate SFRC Columns under Cyclic Loads. Advances in Structural Engineering. 17 (10), pp. 1403-1418.
Seismic response of steel fibre reinforced concrete beam-column joints
Abbas, A., Syed Mohsin, Sharifah M. and Cotsovos, Demetrios M. 2014. Seismic response of steel fibre reinforced concrete beam-column joints. Engineering Structures. 59 (Feb14), pp. 261-283.