STUDI PENGARUH ABU SORGUM TERHADAP KUAT TEKAN, KUAT TARIK BELAH, DAN KUAT LENTUR BETON Bahasa Inggris:STUDY THE EFFECT OF ASH ON THE COMPRESSIVE STRENGTH OF SORGHUM, SPLITING- TENSILE STRENGTH AND FLEXURAL STRENGTH OF CONCRETE

Denny Pratama, 0745011022 (2014) STUDI PENGARUH ABU SORGUM TERHADAP KUAT TEKAN, KUAT TARIK BELAH, DAN KUAT LENTUR BETON Bahasa Inggris:STUDY THE EFFECT OF ASH ON THE COMPRESSIVE STRENGTH OF SORGHUM, SPLITING- TENSILE STRENGTH AND FLEXURAL STRENGTH OF CONCRETE. Fakultas Teknik, Universitas Lampung.

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Abstrak

Memanfaatkan limbah industri dan pemakaian bahan yang ramah lingkungan sebagai pengganti bahan pembentuk beton, namun tetap memiliki kuat tekan yang cukup baik, merupakan langkah bijak dalam persoalan ini. Penelitian ini dilakukan untuk mendapatkan alternatif baru dalam teknologi beton yaitu dengan menggantikan sebagian semen dengan abu ampas sorgum, sehingga pemakaian abu ampas sorgum diharapkan dapat menghasilkan kuat tekan beton kurang lebih sama dengan beton normal namun ramah lingkungan. Tujuan penelitian ini adalah untuk mengetahui pengaruh penambahan abu sorgum terhadap kuat tekan, kuat tarik belah, dan kuat lentur beton sebagai pengganti sebagian berat semen dengan persentase 0%, 5%, 10%, 15%, dan 20% dalam waktu pengikatan 28 dan 56 hari. Metode mix-design dilakukan dengan Metode ACI. Benda uji adalah berbentuk silinder dengan ukuran diameter 100 mm dan tinggi 200 mm untuk uji kuat tekan, kuat tarik belah, dan balok (100 mm x 100 mm x 400 mm) untuk uji kuat lentur. Pada Metode ACI dilakukan pengujian kuat tekan, kuat tarik belah, dan kuat lentur berdasarkan beberapa penambahan abu sorgum pada umur 28 dan 56 hari. Dari hasil pengujian di laboratorium dapat disimpulkan: (1) Nilai kuat tekan, kuat tarik belah dan kuat lentur beton pada variasi persentase abu sorgum mencapai nilai tertinggi pada persentase 20% pada umur 56 hari dengan kuat tekan 20,7644 Mpa, kuat tarik belah 1,8047 Mpa, dan kuat lentur 4,6638 MPa. (2) Penggunaan penggantian sebagian semen dengan abu sorgum pada adukan beton mampu meningkatkan nilai slump beton tersebut, sehingga dengan bertambahnya presentase abu sorgum yang digunakan maka berpengaruh meningkatkan tinggi nilai slump sehingga dapat meningkatkan workability beton tersebut. Kata kunci: beton, abu sorgum, kuat tekan, kuat tarik belah, kuat lentur. Bahasa Inggris: Utilizing industrial waste and use environmentally friendly materials as a substitute for concrete forming material, but still have a fairly good compressive strength, is a wise step in this issue. This study was conducted to obtain a new alternative in concrete technology is to replace a portion of cement with ash residue of sorghum, sorghum making use of ash residue is expected to produce concrete compressive strength is approximately equal to the normal concrete but eco-friendly. The purpose of this study was to determine the effect of ash on the compressive strength of sorghum, split tensile strength and flexural strength of concrete as a partial replacement of cement by weight percentages of 0%, 5%, 10%, 15%, and 20% in the binding of 28 and 56 days. Mix-design method performed by ACI method. Test object is cylindrical with a diameter of 100 mm and height of 200 mm to test compressive strength, split tensile strength, and beam (100 mm x 100 mm x 400 mm) for flexural strength test. ACI method is tested on compressive strength, split tensile strength and flexural strength by the addition of several sorghum ash at 28 and 56 days. From the results of laboratory tests it can be concluded: (1) Compressive strength, split tensile strength and flexural strength of concrete on the variation of the percentage of ash sorghum reached the highest value at a percentage of 20% at the age of 56 days with 20.7644 MPa compressive strength, split tensile strength of 1.8047 MPa and 4.6638 MPa flexural strength. (2) The use of partial replacement of cement with ash in the concrete mix sorghum able to increase the slump of concrete, so that the percentage increase in sorghum are used ashes then increased the slump of high value so as to improve the workability of concrete. Keywords: concrete, sorghum ash, compressive strength, split tensile strength, flexural strength

Tipe Karya Ilmiah: Skripsi
Subyek: A General Works = Karya Karya Umum
Program Studi: Fakultas Teknik > Prodi Sipil
Depositing User: Farid Hambali Prihantoro, A.Md.
Date Deposited: 17 Nov 2014 06:05
Last Modified: 17 Nov 2014 06:05
URI: http://digilib.unila.ac.id/id/eprint/5312

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