PENINGKATAN KUAT TEKAN BETON POND ASH PENGGANTI SEBAGIAN AGREGAT HALUS BERDASARKAN FUNGSI WAKTU
DOI:
https://doi.org/10.32722/pt.v17i1.1087Abstract
ABSTRACT
Pond ash is a mixture of fly ash, bottom ash and other ash materials in a pond/lake/beach, pond ash materials are very overload and become waste, so the research of coal ash waste (pond ash) as a substitute of fine aggregate (sand) to increase the compressive strength of concrete influence of time function , were examined using cylindrical specimens of 100 mm diameter and 200 mm height. The specimens were made by taking a percentage ratio of pond ash by 0%: 5%: 10%: 15% and 20% in the mixture with a constant water cement ratio 0.49 based on the results of a normal concrete mix of f’c 25 MPa. The result of analysis of compressive strength to the time function obtained value at the age of 1 day the calculation results do not deviate from the equity line position, after the age of 3 and 7 days. The compressive strength test of concrete resulted in the value of over estimate means that the value of the test result is lower than the result of the equation can be stated that the hardening process of the concrete press is slow, while the age of 14, 28 days and so on the contrary is the result of compressive strength below the equity line or under estimate means the result value the test is higher than the result of the equation so that it can be stated that the process of hardening presses the concrete faster.
Keywords: Coal Ash, Pond Ash, Compression strength concrete, time function.
ABSTRAK
Pond ash adalah campuran bahan fly ash, bottom ash dan abu lainnya dalam sebuah kolam, bahan pond ash sangat melimpah dan menjadi limbah, maka di teliti pengaruh bahan limbah abu batubara (pond ash) sebagai pengganti sebagian agregat halus (pasir) terhadap peningkatan kuat tekan beton pengaruh fungsi waktu, diteliti menggunakan spesimen berbentuk silinder diameter 100 mm dan tinggi 200 mm. Spesimen dibuat dengan mengambil perbandingan prosentase pond ash sebesar 0%: 5%: 10%: 15% dan 20% terhadap campuran dengan faktor air semen konstan 0,49 berdasarkan rancangan campuran beton normal f’c 25 MPa. Hasil analisa pengujian kuat tekan terhadap fungsi waktu diperoleh nilai pada umur 1 hari hasil perhitungan tidak menyimpang dari posisi garis ekuitas, setelah umur 3 dan 7 hari, hasil perhitungan kuat tekan menghasilkan nilai over estimate berarti nilai hasil pengujian lebih rendah dari hasil persamaan dapat dinyatakan bahwa proses pengerasan kaut tekan beton lambat, sedangkan umur 14, 28 hari dan seterusnya terjadi sebaliknya yaitu menghasilkan kuat tekan dibawah garis ekuitas atau under estimate berarti nilai hasil pengujian lebih tinggi dari hasil persamaan sehingga dapat dinyatakan bahwa proses pengerasan kaut tekan beton semakin cepat.
Kata Kunci : Abu Batubara, Pond ash, Kuat tekan Beton, fungsi waktu
Downloads
References
, Annual Book of ASTM Standars. Section 4 Construction, Volume 04.02 Concrete Aggregates, Philadelphia.
ACI 209.2R-08, 2008, Guide for Modeling and Calculating Shrinkage and Creep in Hardened Concrete. Reported by ACI Committee 209 ISBN 978-0-87031-278-6. Farmington Hills, MI 48331 U.S.A.
Annual Book of ASTM C 33-90. 1992. Standard specification for concrete aggregates.
ASTM C 39/C39M – 12a, Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens, October 2012.
ASTM C 494/C 494M – 99, Standard Specification for Chemical Admixtures for Concrete.
Bagwan, K. M., Kulkarni, Dr. S. S. A Study of Characteristic and Use of Pond Ash for Construction Website: www.ijetae.com (ISSN 2250-2459, ISO 9001:2008 Certified Journal, Volume 4, Issue 6, June 2014.
Bhungani, Hiren., Akbari. Y. V. (2015) Use Waste Material of Sikka Power Plant- (Mound Ash) in Concrete Replacement as Fine Aggregate. IJSRD/Vol. 3/Issue 02/2015/564).
Durán-Herrera, A; Juárez C.A; Valdez, P; Bentz, D.P, 2011. Evaluation of sustainable high-volume fly ash concretes. Cement & Concrete Composites 33 (2011) 39–45.
Mehta, P.K and Monteiro,P.J.M (2005). Concrete: Microstructure, Properties and Materials, 3rd Ed, McGraw-hillProfessional.
Neville, A M; Brooks, J J. (2010) Concrete Technology, second edition, Longman Scientific & Technical.
Rathod, Mihir., Sharma, Shipra. (2015) Review on the Use of both Fly-Ash and Pond-Ash in Concrete Mix Design. IJSRD / Vol. 2/Issue 12/2015/056.
Singh, Malkit; Siddique, Rafat., 2013. Effect of coal bottom ash as partial replacement of sand on properties of concrete, Resources, Conservation and Recycling 72 (2013) 20– 32.
Teuku Ishlah dan Hendro Fujiono, 2008. Evaluasi konservasi sumber daya batubara di sekitar Tanjung Redep Kabupaten Berau Kalimantan Timur, Subdit Konservasi Kementerian ESDM.
Tim Kajian Batubara Nasional. 2006. Batubara Indonesia, Kelompok Kajian Kebijakan Mineral dan Batubara, Pusat Litbang Teknologi Mineral dan Batubara.
Tumingan, (2017) Splitting Tensile of Concrete With Pond Ash as Replacement of Fine Aggregate, International Journal of Innovative Research in Advanced Engineering ( IJIRAE ), Volume 4, Issue 10, October 2017.
Tumingan, M. W Tjaronge, Rudy Djamaluddin and Victor Sampebulu, (2016), Penyerapan dan Porositas pada Beton Menggunakan Bahan Pond Ash Sebagai Pengganti Pasir, Politeknologi VOL. 15 No. 1 Januari 2016, ISSN: 2407-9103.
Tumingan, Tjaronge, M W., Djamaluddin, Rudy., dan Sampebulu, Victor., Compression Strength Of Concrete With Pond Ash As Replacement Of Fine Aggregate, ARPN Journal of Engineering and Applied Sciences, Vol. 9, No. 12, December 2014.
