TY - JOUR
T1 - Utilization of high-volume fly ash in pervious concrete mixtures for mangrove conservation
AU - Ekaputri, Januarti Jaya
AU - Ruitan, Xevna De Elshinta Arellsya
AU - Petrus, Himawan Tri Bayu Murti
AU - Anda, Martin
AU - Purbawinasta, Liliek Harmianto
AU - Laory, Irwanda
AU - Setiamarga, Davin H.E.
AU - Chijiwa, Nobuhiro
AU - Fujiyama, Chikako
N1 - Publisher Copyright:
© 2024
PY - 2024/5
Y1 - 2024/5
N2 - 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.
AB - 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.
KW - Artificial aggregate
KW - High-volume fly ash
KW - Mangrove pot
KW - Mixing sequence
KW - Pervious concrete
UR - http://www.scopus.com/inward/record.url?scp=85186645289&partnerID=8YFLogxK
U2 - 10.1016/j.rcradv.2024.200204
DO - 10.1016/j.rcradv.2024.200204
M3 - Article
AN - SCOPUS:85186645289
SN - 2667-3789
VL - 21
JO - Resources, Conservation and Recycling Advances
JF - Resources, Conservation and Recycling Advances
M1 - 200204
ER -