Pengembangan Kekuatan Jangka Pendek dan Ketahanan Degradasi Mortar Pasir Laut dan Air Laut untuk Penghalang Perlindungan Zona Pasang Surut
DOI:
https://doi.org/10.55606/juprit.v5i3.6874Keywords:
Compressive Strength, Durability, Mortar, Sea Sand, SEM-EDSAbstract
Coastal embankment structures require mortar with adequate early-age strength and high resistance to degradation in aggressive marine environments. Utilizing sea sand and seawater as mortar constituents offers the potential to reduce the exploitation of freshwater and river sand resources; however, it raises concerns regarding the impact of chloride and sulfate ions on mechanical properties and durability. This study aims to investigate the early-age strength development of marine-based mortar, assess changes in water absorption and compressive strength resulting from wet-dry cycles, and evaluate microstructural degradation resistance against durability standards for tidal zone protective layers. Experimental methods included aggregate characterization, compressive strength and water absorption testing, and microstructural analysis using SEM and EDS. Results indicate that sea-sand/seawater mortar specimens immersed in seawater exhibited compressive strength increases from 9.33 MPa (3 days) to 10.67 MPa (7 days) and 10.00 MPa (28 days), whereas river-sand/seawater mortar reached 12.67 MPa at 28 days. Water absorption decreased with age, reaching 3.20% at 28 days. SEM-EDS analysis revealed a dense matrix containing hydration products and detected Cl, Na, Mg, and S elements resulting from exposure to the marine environment. Overall, the findings confirm the potential of sea-sand and seawater-based mortar as a protective barrier material for coastal structures and tidal zones.
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References
Adnan, A., Parung, H., Tjaronge, M. W., & Djamaluddin, R. (2020). Bond between steel reinforcement bars and seawater concrete. Civil Engineering Journal, 6, 61–68. https://doi.org/10.28991/cej-2020-SP(EMCE)-06
Badan Standardisasi Nasional. (2002). SNI 03-6882-2002 Spesifikasi mortar untuk pekerjaan pasangan. Jakarta: Badan Standardisasi Nasional.
Badan Standardisasi Nasional. (2014). SNI 6882:2014 Spesifikasi mortar untuk pekerjaan unit pasangan (ASTM C270-10). Jakarta: Badan Standardisasi Nasional.
Cheng, S., Shui, Z., Sun, T., Huang, Y., & Liu, K. (2018). Effects of seawater and supplementary cementitious materials on the durability and microstructure of lightweight aggregate concrete. Construction and Building Materials, 190, 1081–1090. https://doi.org/10.1016/j.conbuildmat.2018.09.178
Edwin, M. (2025). Efek ultrafine ampas teh pasir pantai dan air laut terhadap kekuatan dan porositas mortar. Majene.
Fadly, I., Mustakim, M., & Hasan, N. (2024). Analisis pengaruh pasir pantai Wahede Kabupaten Barru terhadap kuat tekan dan tarik belah beton. Sultra Civil Engineering Journal (SCiEJ), 5(2), 330–340. https://doi.org/10.54297/sciej.v5i2.657
Guo, M., et al. (2020). Characterization of the mechanical properties of eco-friendly concrete made with untreated sea sand and seawater based on statistical analysis. Construction and Building Materials, 234, 117339. https://doi.org/10.1016/j.conbuildmat.2019.117339
Hussain, Z., et al. (2024). Microstructural and mechanical assessment of sulfate-resisting cement concrete over Portland cement incorporating sea water and sea sand. Case Studies in Construction Materials, 21, e03689. https://doi.org/10.1016/j.cscm.2024.e03689
Iskandar, M. R., Suharyanto, I., Nurokhman, N., & Cahyono, S. (2025). Analisis penggunaan pasir pantai Jatimalang sebagai bahan alternatif agregat halus terhadap kuat tekan mortar. Civil Engineering and Technology Journal, 7(1), 19–30. https://doi.org/10.47200/civetech.v7i1.2775
Jabir, M., & Syamsuddin, M. S. (2023). Perbandingan uji kuat tekan beton K-200 dan substitusi serbuk tempurung kelapa terhadap beton normal. Jurnal Karajata Engineering, 3(2), 107–110. https://doi.org/10.31850/karajata.v3i2.2690
Jakobsen, U. H., De Weerdt, K., & Geiker, M. R. (2016). Elemental zonation in marine concrete. Cement and Concrete Research, 85, 12–27. https://doi.org/10.1016/j.cemconres.2016.02.006
Limeira, J., Agullo, L., & Etxeberria, M. (2010). Dredged marine sand in concrete: An experimental section of a harbor pavement. Construction and Building Materials, 24(6), 863–870. https://doi.org/10.1016/j.conbuildmat.2009.12.011
Luo, Q. H., & Fang, S. E. (2024). Modified natural seawater sea-sand concrete: Linking microstructure to mechanical performance. Journal of Building Engineering, 98, 111461. https://doi.org/10.1016/j.jobe.2024.111461
Mangontan, G. A. S. (2024). Perilaku tekan, resistivity, dan emisi karbon mortar yang mengandung air laut, silica fume, dan semen campuran. Makassar.
Qu, F., Li, W., Wang, K., Tam, V. W. Y., & Zhang, S. (2021). Effects of seawater and undesalted sea sand on the hydration products, mechanical properties and microstructures of cement mortar. Construction and Building Materials, 310, 125229. https://doi.org/10.1016/j.conbuildmat.2021.125229
Salmonda, P. (2018). Analisa penggunaan pasir pantai sebagai pengganti agregat halus terhadap kuat tekan mortar. Medan.
Sun, Z., et al. (2025). Impact of high-temperature exposure on the mechanical properties and microstructure of seawater sea sand mortar. Case Studies in Construction Materials, 23(2), e05178. https://doi.org/10.1016/j.cscm.2025.e05178
Tauhid, N. H. (2023). Pengaruh rendaman air laut dan penggunaan mortar air laut pada dinding terhadap kuat tekan dan lentur. Yogyakarta.
Wang, X., Dong, C., Xu, S., Song, Q., Ren, J., & Zhu, J. (2023). Influence of seawater and sea sand on early-age performance and cracking sensitivity of concrete. Journal of Building Engineering, 79, 107811. https://doi.org/10.1016/j.jobe.2023.107811
Xie, Q., Xiao, J., & Zong, Z. (2022). Strength and microstructure of seawater and sea sand mortar after exposure to elevated temperatures. Construction and Building Materials, 322, 126451. https://doi.org/10.1016/j.conbuildmat.2022.126451
Younis, A., Ebead, U., Suraneni, P., & Nanni, A. (2018). Fresh and hardened properties of seawater-mixed concrete. Construction and Building Materials, 190, 276–286. https://doi.org/10.1016/j.conbuildmat.2018.09.126
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