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CC BY-NC-ND V4.0, Open Access
Journal article
Utilization of high-volume fly ash in pervious concrete mixtures for mangrove conservation
Resources, conservation & recycling advances, Vol.21, 200204
2024
Abstract
In environmental conservation, mangrove forests play a crucial role. Retransplanting mangrove propagules, however, faces challenges, and success rates are notably low. Achieving an optimal protector for propagules, balancing strength without impeding growth, is challenging. Mangrove propagules require a temporary protector with an optimal balance, neither too weak nor too strong, to shield them from current waves which is difficult. We propose using pervious concrete pots with high-volume fly ash activated with low NaOH concentrations. The investigation focuses on the influence of the mixing procedure on workability, compressive strength, and mineral composition. The novel discovery in this study is the specific sequence of stirring the ingredients using an alkali activator, which adds an interesting dimension to the research. It is recommended to adopt Sequence 2 in pervious concrete production, where NaOH dissolved FA in the mixture forming albite as N-A-S-H gel product. It surely enhanced both workability and the strength confirming uniform application processes. The two recommended variants, PFS-60 and PFBS-50, effectively utilize coal ash, meeting the target compressive strength range of 3–5 MPa and providing support for mangrove pots over a 3–4 year period. Notably, both compositions maintained consistent mechanical properties during exposure to tidal conditions for 240 days.They exhibit high permeability (694 liter/m²/minute), facilitating efficient water passage without sediment entrainment.
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Details
- Title
- Utilization of high-volume fly ash in pervious concrete mixtures for mangrove conservation
- Authors/Creators
- Januarti Jaya Ekaputri - Sepuluh Nopember Institute of TechnologyXevna De Elshinta Arellsya Ruitan - Growth Center, Kompas Gramedia, Jalan Palmerah Barat, Jakarta, IndonesiaHimawan Tri Bayu Murti Petrus - Universitas Gadjah MadaMartin Anda - Murdoch University, Centre for Water, Energy and WasteLiliek Harmianto Purbawinasta - Universitas GresikIrwanda Laory - University of WarwickDavin H.E. Setiamarga - National College of Technology, Wakayama CollegeNobuhiro Chijiwa - Tokyo Institute of TechnologyChikako Fujiyama - Yokohama National University
- Publication Details
- Resources, conservation & recycling advances, Vol.21, 200204
- Publisher
- Elsevier B.V.
- Identifiers
- 991005645769807891
- Copyright
- © 2024 Elsevier B.V.
- Murdoch Affiliation
- School of Engineering and Energy
- Language
- English
- Resource Type
- Journal article
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