Pengaruh Kebersihan Agregat terhadap Kuat Tekan Beton dan Implikasinya pada Konstruksi Struktural Sederhana
DOI:
https://doi.org/10.51988/jtsc.v6i2.350Keywords:
concrete, unwashed aggregate, compressive strength, filler effect, durabilityAbstract
Aggregate is the primary component of concrete, comprising 60–75% of its total volume; thus, its quality greatly influences the final performance of the concrete. Technical standards such as SNI 03-2834-2000 and ASTM C33/C33M recommend that aggregates be free from impurities such as silt and clay to ensure proper bonding and long-term durability. However, in small- to medium-scale construction, unwashed aggregates are still commonly used due to economic and logistical constraints. This study aims to evaluate the effect of aggregate cleanliness on compressive strength and explore its practical implications for low-rise residential buildings. The research was conducted through a laboratory experiment using two aggregate conditions (washed and unwashed), a mix ratio of 1:2:3, and compressive strength testing at 7, 14, and 28 days. The results indicate that concrete made with unwashed aggregates exhibited consistently higher compressive strength (by 0.9–1.1 MPa) compared to concrete with washed aggregates. This is likely due to a filler effect from fine particles that enhance the concrete’s density. However, high silt content may still compromise long-term durability. The findings suggest that locally sourced, unwashed aggregates could serve as an alternative for structural concrete in low-rise housing, provided proper quality control and technical validation are implemented.
References
Abalaka, A. E., & Okoli, E. O. (2021). Effect of washing of fine aggregates on strength of concrete. Journal of Building Engineering, 43, 102731. https://doi.org/10.1016/j.jobe.2021.102731
ASTM International. (2004). Standard Test Method for Materials Finer than 75-?m (No. 200) Sieve in Mineral Aggregates by Washing (ASTM C117-04). ASTM International.
ASTM International. (2018). Standard Specification for Concrete Aggregates (ASTM C33/C33M-18). ASTM International.
Bui, D. D., Hu, J., & Stroeven, P. (2005). Particle size effect on the strength of rice husk ash blended gap-graded Portland cement concrete. Cement and Concrete Composites, 27(3), 357–366. https://doi.org/10.1016/j.cemconcomp.2004.04.003
Ghafari, E., Costa, H., & Júlio, E. (2015). Critical review on eco-efficient ultra high performance concrete: Towards practical applications. Construction and Building Materials, 101, 201–211. https://doi.org/10.1016/j.conbuildmat.2015.01.035
Kosmatka, S. H., & Wilson, M. L. (2016). Design and Control of Concrete Mixtures. Portland Cement Association. https://doi.org/10.1016/j.conbuildmat.2016.04.117
Mehta, P. K., & Monteiro, P. J. M. (2014). Concrete: Microstructure, Properties, and Materials (4th ed.). McGraw-Hill Education. https://doi.org/10.1016/B978-0-08-100987-2.00001-2
Neville, A. M. (2006). Properties of Concrete (4th ed.). Pearson Education Limited. https://doi.org/10.1016/j.cemconcomp.2006.03.006
SNI 03-2834-2000. (2000). Tata cara pembuatan rencana campuran beton normal. Badan Standardisasi Nasional.
SNI 1974:2011. (2011). Metode pengujian kuat tekan beton silinder. Badan Standardisasi Nasional.
Tang, S. W., Yao, Y., Andrade, C., Li, Z. J., & Chen, B. (2020). Use of fillers in improving the mechanical performance and durability of concrete – A review. Construction and Building Materials, 251, 118440. https://doi.org/10.1016/j.conbuildmat.2020.118440
Zain, M. F. M., Safiuddin, M., & Yusof, K. M. (2006). A study on the properties of freshly mixed high performance concrete. Automation in Construction, 15(4), 357–365. https://doi.org/10.1016/j.autcon.2006.10.007
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