| Issue |
E3S Web Conf.
Volume 429, 2023
The Third International Conference of Construction, Infrastructure, and Materials (ICCIM 2023)
|
|
|---|---|---|
| Article Number | 05006 | |
| Number of page(s) | 7 | |
| Section | Structural Engineering and Materials | |
| DOI | https://doi.org/10.1051/e3sconf/202342905006 | |
| Published online | 20 September 2023 | |
Effect of polypropylene fiber on workability and strength of fly ash-based geopolymer mortar
Civil Engineering Study Program, Universitas Muhammadiyah Yogyakarta, Jl. Brawijaya, Geblagan, Yogyakarta, Indonesia
* Corresponding author: rahmad.a.ft17@mail.umy.ac.id
Geopolymers do not require Portland cement as a binder; hence, the binder is replaced by a material containing high SiO2 and Al2O3 reacted with an alkaline activator (NaOH and Na2SiO3). In addition, mortar or concrete is highly susceptible to cracking, requiring the addition of polypropylene fiber (PPF). This research belongs to an experimental study examining the addition of PPF with percentages from 0%, 0.25%, 0.5%, 0.75%, and 1% by utilizing coal fly ash (FA) as a precursor. This study also added a superplasticizer (SP) and extra water (EW) to maintain the flowability. The tests were carried out on the workability, strengths, and microstructure of geopolymer mortar. Workability obtained values of 140 - 220 mm. Furthermore, the highest compressive strength of 73.3 MPa and flexural strength of 9.92 MPa were identified in the geopolymer mortar with the addition of 0.5% PPF. In addition, scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) tests were applied to investigate the geopolymer microstructure.
© The Authors, published by EDP Sciences, 2023
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