Optimization of Superplasticizer Dosage on Compressive Performance in Self-Compacting Concrete Mixtures with Silicafume as a Cementitious Material
DOI:
https://doi.org/10.18196/bce.v4i2.25921Keywords:
Self-compacting concrete, superplasticizer, compressive strength, optimizationAbstract
Self-Compacting Concrete (SCC) telah menarik perhatian di dalam industri konstruksi karena kemampuannya yang luar biasa dalam mengalir dan mengisi cetakan yang rumit tanpa memerlukan pemadatan eksternal. Optimasi dosis superplasticizer memegang peranan penting dalam meningkatkan kinerja tekan dari SCC. Penelitian ini bertujuan untuk mengkaji pengaruh variasi dosis superplasticizer terhadap kuat tekan campuran beton self-compacting serta menentukan dosis optimal untuk memperoleh kinerja tekan yang lebih baik. Metode eksperimen yang ekstensif telah dilakukan, mencakup persiapan dan pengujian campuran SCC dengan berbagai variasi dosis superplasticizer. Pengujian kuat tekan dilakukan pada beberapa umur perawatan untuk mengevaluasi kinerja jangka panjang. Temuan penelitian menunjukkan adanya korelasi non-linier antara dosis superplasticizer dan kuat tekan. Meskipun peningkatan dosis awal memberikan peningkatan kuat tekan, dosis yang berlebihan justru menyebabkan penurunan kinerja. Melalui analisis statistik dan teknik optimasi, diperoleh rentang dosis optimal superplasticizer yang menghasilkan nilai kuat tekan tertinggi. Selain itu, pengaruh dosis superplasticizer terhadap sifat beton lainnya, seperti kemudahan pengerjaan (workability) dan kemampuan alir (flowability), juga dievaluasi. Temuan ini memberikan wawasan berharga dalam mengoptimalkan dosis superplasticizer untuk mencapai peningkatan kinerja tekan pada campuran beton self-compacting. Dosis yang telah dioptimalkan ini berpotensi mendukung pengembangan campuran SCC yang lebih efisien dan tahan lama, sehingga memperluas aplikasinya dalam berbagai proyek konstruksi.
Self-compacting concrete (SCC) has garnered significant attention in the construction industry due to its exceptional flowability and ability to fill intricate forms without the need for external compaction. The optimization of superplasticizer dosage plays a critical role in enhancing the compressive performance of SCC. This research aims to investigate the impact of superplasticizer dosage on the compressive strength of self-compacting concrete mixtures and determine the optimal dosage for achieving improved compressive performance. An extensive experimental program was conducted, involving the preparation and testing of SCC mixtures with varying superplasticizer dosages. Compressive strength tests were performed at different curing ages to evaluate long-term performance. The finding revealed a non-linear correlation between superplasticizer dosage and compressive strength. While increasing dosage initially led to improved compressive strength, excessive dosages resulted in diminished performance. Through statistical analysis and optimization techniques, an optimal range of superplasticizer dosage was determined, exhibiting the highest compressive strength values. Additionally, the influence of superplasticizer dosage on other concrete properties, such as workability and flowability, was also assessed. These findings offer valuable insights into optimizing superplasticizer dosage to achieve enhanced compressive performance in self-compacting concrete mixtures. The optimized dosage can contribute to the development of more efficient and durable SCC mixtures, facilitating their application in various construction projects.
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