Thoung, C., Beaven, R., Zuo, C., Birkin, M., Tyler, P., Crawford-Brown, D., Oughton, E.J. and Kelly, S. (2016) Future Demand for Infrastructure Services. In: Hall, J.W., Tran, M., Hickford, A.J. and Nicholls, R.J., Eds., The Future of National Infrastructure: A System-of-Systems Approach. Cambridge University Press, 31-35.
https://doi.org/10.1017/CBO9781107588745.004

has been cited by the following article:

• TITLE: Effect of Lateritic Stone Aggregate and Coconut Husk Fiber on the Properties of Concrete

  AUTHORS: Edmund Borbi, Humphrey Danso, Emmanuel Appiah-Kubi

  KEYWORDS: Concrete, Coarse Aggregate, Compressive Strength, Flexural Strength, Natural Stone Aggregate, SEM

  JOURNAL NAME: Open Journal of Civil Engineering, Vol.14 No.2, June 28, 2024

  ABSTRACT: Natural stone aggregate forms the bulk volume of concrete and has contributed to the increased cost of concrete production. This has led to the search for alternate aggregates such as lateritic stone for concrete production. This paper investigates the engineering properties of concrete produced with lateritic aggregate (LA) as the coarse aggregate replacement and coconut husk fibre (CHF) as reinforcement. Natural stone aggregate was replaced by LA at 0%, 10%, 20%, 30%, 40%, and 50%, with 0.25% constant CHF by weight. A mix proportion of 1:1.5:3 with a water-cement ratio of 0.6 was used for producing concrete. A total of 162 specimens (90 cubes and 72 beams) were prepared and tested at the 7, 14, 21, and 28 days of curing. The highest compressive strength was 43.36 N/mm2 (10% LA replacement) as compared to the control of 41.51 N/mm2. The 10% LA replacement obtained the highest flexural strength of 5.35 N/mm2 as compared with the 5.29 N/mm2 for the control. The water absorption of the concrete increased from 2.8% (control) to 3.57% (50% replacement LA). Scanning electron microscopy (SEM) revealed micro gaps between CHF and LA concrete. The study, therefore, concludes that the use of LA and CHF positively influenced the strength properties of concrete. 10% LA replacement of coarse aggregate and 0.25% CHF is recommended to practitioners for use.