STRENGTH CHARACTERISTICS OF GEOPOLYMER CONCRETE INCORPORATING POLYPROPYLENE FIBRE UNDER FIRE CONDITION
Abstract
The widespread use of concrete in construction is driven by its adaptability, strength, and durability. However, the environmental repercussions associated with conventional concrete made from ordinary Portland cement (OPC) have raised concerns due to resource depletion, energy consumption, and greenhouse gas emissions. This study presents the results of compressive strength tests performed on multiple concrete mixes that utilize eco-friendly geopolymer technology and polypropylene fibres that were subjected to elevated temperatures. The study investigated a total of six concrete mix designs that utilize ground granulated blast furnace slag (GGBFS) and fly ash (FA) as a total replacement for conventional ordinary Portland cement (OPC). Sodium Hydroxide was used as an activator with identical proportions between the mixes. The results showed that the inclusion of 1 kg/m3 of PP fibres had no significant effect on compressive strength. The results reveal a notable increase in compressive strength of over 50% when incorporating GGBFS and PP fibres. Upon exposure to elevated temperatures, geopolymer-based mixtures exhibited significant compressive strength reduction, with certain samples experiencing nearly 70% strength loss. Future research should focus on devising strategies to mitigate these effects and enhance fire resistance for practical applications.
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References
A. A. Shahmansouri, M. Nematzadeh, and A. Behnood, “Mechanical properties of GGBFS-based geopolymer concrete incorporating natural zeolite and silica fume with an optimum design using response surface method,” Journal of Building Engineering, vol. 36, p. 102138, Apr. 2021, doi: 10.1016/j.jobe.2020.102138.
R. Sarathy and G. Dhinakaran, “Strength and durability characteristics of GGBFS based HPC,” Asian Journal of Applied Sciences, vol. 7, pp. 224–231, Apr. 2014, doi: 10.3923/ajaps.2014.224.231.
Y. I. A. Aisheh, D. S. Atrushi, M. H. Akeed, S. Qaidi, and B. A. Tayeh, “Influence of polypropylene and steel fibers on the mechanical properties of ultra-high-performance fiber-reinforced geopolymer concrete,” Case Studies in Construction Materials, vol. 17, p. e01234, Dec. 2022, doi: 10.1016/j.cscm.2022.e01234.
Y. I. A. Aisheh et al., “Mechanical and fracture properties of steel fiber-reinforced geopolymer concrete,” Science and Engineering of Composite Materials, vol. 28, no. 1, pp. 299–313, 2021, doi: doi:10.1515/secm-2021-0030.
E. N. A. E. Ivan Diaz-Loya and Saiprasad Vaidya, “Mechanical Properties of Fly-Ash-Based Geopolymer Concrete,” ACI Materials Journal, vol. 108, no. 3, Jan. 2011, doi: 10.14359/51682495.
Z. G. Ralli and S. J. Pantazopoulou, “State of the art on geopolymer concrete,” International Journal of Structural Integrity, vol. 12, no. 4, pp. 511–533, Jan. 2021, doi: 10.1108/IJSI-05-2020-0050.
A. Antoni, S. W. Wijaya, and D. Hardjito, “Factors Affecting the Setting Time of Fly Ash-Based Geopolymer,” Materials Science Forum, vol. 841, pp. 90–97, 2016, doi: 10.4028/www.scientific.net/MSF.841.90.
L. N. Assi, E. (Eddie) Deaver, and P. Ziehl, “Using sucrose for improvement of initial and final setting times of silica fume-based activating solution of fly ash geopolymer concrete,” Construction and Building Materials, vol. 191, pp. 47–55, Dec. 2018, doi: 10.1016/j.conbuildmat.2018.09.199.
“ASTM C172 - Standard Practice for Making and Curing Concrete Test Specimens in the Field.” https://www.astm.org/c0031_c0031m-22.html (accessed Jun. 09, 2023).
“ASTM C31 - Standard Practice for Sampling Freshly Mixed Concrete.” https://www.astm.org/c0172_c0172m-17.html (accessed Jun. 09, 2023).
“ASTM C39-21 - Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens.” https://www.astm.org/c0039_c0039m-21.html (accessed Jun. 09, 2023).
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