Comparison of Mixtures Using Seawater and Brackish Water on Concrete Quality on Rigid Pavement
Keywords:
Concrete, Seawater, Brackish Water, Compressive Strength, Rigid PavementAbstract
This study aims to evaluate the effect of using seawater and brackish water on the quality and strength of concrete applied in the construction of rigid pavements in coastal areas, specifically in Karimun Regency, Riau Islands. In these regions, freshwater resources are highly limited, making seawater and brackish water alternatives potential solutions to support construction activities. This research is important to ensure that the use of non-potable water sources does not significantly reduce the quality and strength of concrete, and can serve as an innovative and economical solution for infrastructure development in coastal areas facing water availability challenges. The results of this study are expected to serve as a reference for construction practitioners and local policymakers in decision-making regarding the use of seawater and brackish water in road and infrastructure development projects in coastal regions. The methodology involved preparing cylindrical specimens with a diameter of 15 cm and a height of 30 cm, targeting a strength of 30 MPa. Compressive strength tests were conducted at ages of 7, 14, and 28 days, with three samples for each variation. These variations included the use of seawater and brackish water as mixing materials, along with immersion curing methods. The test results showed that concrete using seawater achieved an average compressive strength of 33.72 MPa, approximately 112.4% of the planned target strength, while concrete using brackish water had an average strength of 30.25 MPa, around 100.8%. Based on these data, it can be concluded that seawater still demonstrates a feasible strength level for coastal applications, whereas brackish water shows less optimal results and is less recommended for long-term use. The final conclusion emphasizes that seawater can be used as an alternative water source in concrete production, while the use of brackish water should be avoided to maintain optimal concrete quality and strength.
References
Albert, G. (2025). The effect of water motion and elevated carbon on two green algae Ulva intestinalis and Cladophora glomerata DIC acquisition and DOC release in the brackish Baltic Sea. European Journal of Phycology, 60(1), 43-52, ISSN 0967-0262, https://doi.org/10.1080/09670262.2024.2441365
Aulia, R. (2019). Pengaruh Penggunaan Air Laut Terhadap Kuat Tekan Beton Jurnal Rekayasa Sipil 15(1): 45–52.
Badan Standardisasi Nasional (BSN). (2011). SNI 1974:2011 Metode Pengujian Kuat Tekan Beton Silinder. Jakarta: BSN.
Badan Standardisasi Nasional (BSN). (2012). SNI 7656:2012 Tata Cara Pemilihan Campuran untuk Beton Normal, Beton Berat, dan Beton Massa. Jakarta: BSN.
Badan Standardisasi Nasional (BSN). (2015). SNI 8062:2015 Persyaratan Kualitas Air untuk Campuran Beton. Jakarta: BSN.
Chan, M.W.H. (2025). Pollution indices of brackish water and sediments of major mangrove sites along Arabian Sea coast of Pakistan. Scientific Reports, 15(1), ISSN 2045-2322, https://doi.org/10.1038/s41598-025-01712-w
Departemen Pekerjaan Umum. (2010). Spesifikasi Umum Bina Marga 2010 (Revisi 3). Direktorat Jenderal Bina Marga.
Golubkov, M. (2025). The role of total phosphorus in eutrophication of freshwater and brackish-water parts of the Neva River estuary (Baltic Sea). Marine Environmental Research, 209, ISSN 0141-1136, https://doi.org/10.1016/j.marenvres.2025.107232
Halim, M., & Rachman, D. (2020). Pengaruh Air Payau Terhadap Mutu Beton Normal, Jurnal Teknik Sipil dan Lingkungan 8(2): 110–117.
Nasr-Eldahan, S. (2025). Impact of dietary protein levels and feeding regimes on growth performance and biochemical profile of European sea bass (Dicentrarchus labrax) reared in a brackish water recirculating aquaculture system. Aquaculture Reports, 44, ISSN 2352-5134, https://doi.org/10.1016/j.aqrep.2025.103034
Nasution, F. (2018). Studi Eksperimental Beton Menggunakan Air Laut sebagai Air Pencampur. Jurnal Konstruksi 6(2): 88–95.
Niken, C. (2025). Permeability And Compressive Strength Of Normal Concrete Submerged In Sea And Brackish Water. Jurnal Teknologi, 87(2), 389-398, ISSN 0127-9696, https://doi.org/10.11113/jurnalteknologi.v87.22842
Nilsson, J. (2025). Descaling did not affect osmoregulation, growth or mortality in Atlantic salmon smolts after transfer to brackish or sea water. Aquaculture, 605, ISSN 0044-8486, https://doi.org/10.1016/j.aquaculture.2025.742526
Pönisch, D.L. (2025). Variability of CO2 and CH4 in a coastal peatland rewetted with brackish water from the Baltic Sea derived from autonomous high-resolution measurements. Biogeosciences, 22(14), 3583-3614, ISSN 1726-4170, https://doi.org/10.5194/bg-22-3583-2025
Purnama, H. & Andriani, R. (2021). Perbandingan Mutu Beton yang Menggunakan Air Tawar, Air Payau, dan Air Laut, Jurnal Teknik Infrastruktur 10(1): 22–29.
Quang, N.H. (2025). Modelling sea and brackish water quality of Ha Long City (Vietnam) using machine learning and remote sensing techniques. Advances in Space Research, 75(6), 4575-4587, ISSN 0273-1177, https://doi.org/10.1016/j.asr.2024.12.065
SNI 7656 : 2012 Tentang Tata Cara Pemilihan Campuran Untuk Beton Normal, Beton Berat Dan Beton Massa
Standard Nasional Indonesia No SNI 03-2834-2000, 2000, Tata Cara Pembuatan Beton Normal
Surahman, D. & Wijaya, Y. (2020). Kinerja Beton dengan Air Laut Terhadap Ketahanan Korosi, Jurnal Teknik Sipil 18(3): 90–98.
Widyatama, S. (2021). Analisis Beton dengan Campuran Air Payau dan Pengaruhnya Terhadap Daya Tekan. Tesis. Universitas Gadjah Mada.
