Pengaruh Penggunaan Kapur Sirih dan Sillica Fume Sebagai Cementious Terhadap Kuat Tekan Beton

Meha, Adi Putra Pranata (2018) Pengaruh Penggunaan Kapur Sirih dan Sillica Fume Sebagai Cementious Terhadap Kuat Tekan Beton. S1 thesis, Universitas Kristen Indonesia.

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Abstract

Beton campuran dengan menggunakan kapur sirih dan silica fume merupakan beton yang ramah lingkungan dan dapat mengurangi limbah. Penggunaan kapur sirih dan silica fume sebagai bahan tambah pada beton, dimungkinkan akan lebih dapat memiliki kuat tekan yang lebih tinggi. Dalam penelitian ini, adapun variasi substitusi kapur sirih dan sillica fume yang digunakan adalah 0%, 5%, 10%, 15%, 20% dan pengujian yang dilakukan berupa slump test, kuat tekan, dan absorbsi. Dari hasil pengujian penurunan kuat tekan kapur sirih masing-masing sebesar 70,90%, 59,90%, 53,37%, 49,99% dari beton normal, Kuat tekan terbesar pada substitusi abu kulit kerang terdapat pada persentase 5% sebesar 25,01 MPa sehingga tidak memenuhi mutu beton yang direncanakan. Sedangkan penurunan kuat tekan substitusi sillica fume masing-masing sebesar 82,09%, 75,37%, 65,23%, 60,41% dari beton normal. Kuat tekan terbesar silica fume 5% sebesar 28,97 MPa. Sedangkan penurunan kuat tekan pada kombinasi substitusi kapur sirih dan sillica fume masing-masing sebesar 74,61%, 67,38%, 59,90%, 56,73% dari beton normal. Dari hasil pengujian tersebut diperoleh penurunan pada kuat tekan. Untuk itu, jika diadakan penelitian lebih lanjut ada baiknya nilai variasikapur sirih dan sillica fume diperkecil kurang dari 5% agar dapat dimanfaatkan sebagai bahan pengganti. Kata kunci : kapur sirih, sillica fume, kuat tekan, absorbsi. / Mixed concrete using whiting and silica fume is environmentally friendly concrete and can reduce waste. The use of whiting and silica fume as added material on concrete, it is possible to have a higher compressive strength. In this study, the variation of substitution of whiting and sillica fume used was 0%, 5%, 10%, 15%, 20% and the tests were carried out in the form of slump test, compressive strength, and absorption. From the results of testing the decrease in compressive strength of whiting each of 70.90%, 59.90%, 53.37%, 49.99% of normal concrete, the greatest compressive strength on the substitution of shellfish ash was at a percentage of 5% of 25 , 01 MPa so that it does not meet the planned concrete quality. While the decrease in the compressive strength of sillica fume substitution was 82.09%, 75.37%, 65.23%, 60.41% of normal concrete, respectively. The highest silica fume compressive strength of 5% is 28.97 MPa. While the decrease in compressive strength in the combination of substitution of whiting and sillica fume was 74.61%, 67.38%, 59.90%, 56.73% of normal concrete, respectively. From the test results obtained a decrease in compressive strength. For that reason, if further research is carried out, it is better to reduce the value of the variety of betel and sillica fume to less than 5% so that it can be used as a substitute. Keywords: whiting, sillica fume, compressive strength, absorption

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