Pengaruh Penambahan Agregat Alwa (Artificial Light Weight Aggregate) Terhadap Sifat Kuat Tekan Beton Dengan Campuran Fly Ash

Laia, Yuliman (2021) Pengaruh Penambahan Agregat Alwa (Artificial Light Weight Aggregate) Terhadap Sifat Kuat Tekan Beton Dengan Campuran Fly Ash. S1 thesis, Universitas Kristen Indonesia.

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Abstract

Fly ash dapat dijadikan sebagai pengisi rongga-rongga dalam pembuatan beton sehingga dapat meningkatkan kekuatan beton. Bahan alternatif dalam campuran beton lainnya adalah alwa sebagai agregat kasar. Karena beratnya yang ringan, maka alwa dapat dijadikan agregat kasar pada campuran beton. Tujuan penelitian ini adalah untuk melihat nilai kuat tekan beton normal, nilai kuat tekan beton campuran fly ash 12,5% dan agregat alwa dengan presentase 5%, 7,5%, 10%, 12,5%,15%, dan juga beton normal campuran fly ash 12,5% di umur beton 14, 21, dan 28 hari. Penelitian menggunakan benda uji kubus sebanyak 63 benda uji, setiap variasi sebanyak 9 benda uji. Dari hasil penelitian diperoleh bahwa kuat tekan beton fly ash dan alwa menurun sampai persentase alwa 7,8% kemudian meningkat sampai persentase 15% yaitu 19,11 MPa. Jika melihat trendline, diperkirakan bahwa peningkatan kuat tekan beton agar mencapai rencana 20 MPa dapat terjadi di penambahan alwa sebesar 16%. Berat jenis beton juga berpengaruh terhadap kuat tekan. Rata-rata setiap variasi penambahan alwa 2,5% berat jenis turun 1% sedangkan terhadap beton normal turun 17%. Dapat disimpulkan bahwa alwa menjadi faktor penurunan kuat tekan beton karena terjadi segregasi, namun massa jenis beton menjadi lebih ringan dibandingkan beton normal. Kata kunci: Fly Ash, Alwa, Beton, Kuat Tekan. / Fly ash can be used as a filler for cavities in the manufacture of concrete so as to increase the strength of the concrete. An alternative material in other concrete mixtures is alwa as coarse aggregate. Because of its light weight, alwa can be used as coarse aggregate in concrete mixtures. The purpose of this study was to see the compressive strength of normal concrete, the value of the compressive strength of the concrete mix of fly ash 12.5% and alwa aggregate with a percentage of 5%, 7.5%, 10%, 12.5%, 15%, and also concrete. normal 12.5% fly ash mixture in the concrete age of 14, 21, and 28 days. The study used a cube as many as 63 test objects, each variation as many as 9 test objects. From the results of the study, it was found that the compressive strength of fly ash and alwa concrete decreased to a percentage of 7.8% alwa and then increased to a percentage of 15%, namely 19.11 MPa. If you look at the trendline, it is estimated that an increase in the compressive strength of concrete to reach the 20 MPa plan can occur in an additional 16% alwa. The specific gravity of concrete also affects the compressive strength. On average, each variation of the addition of 2.5% specific gravity decreased by 1% while against normal concrete it decreased by 17%. It can be concluded that alwa is a factor in reducing the compressive strength of concrete due to segregation, but the density of concrete islighter than normal concrete. Keywords: fly ash, alwa, concrete, compressive strengh

Item Type: Thesis (S1)
Contributors:
ContributionContributorsNIDN/NIDKEmail
Thesis advisorHutabarat, Lolom EvalitaNIDN0306067103Lolom.Hutabarat@uki.ac.id
Thesis advisorTampubolon, Sudarno PNIDN0311048904Sudarno.Tampubolon@uki.ac.id
Subjects: TECHNOLOGY > Engineering (General). Civil engineering (General)
Divisions: FAKULTAS TEKNIK > Teknik Sipil
Depositing User: Mr Yuliman Laia
Date Deposited: 27 Sep 2021 02:20
Last Modified: 27 Sep 2021 02:20
URI: http://repository.uki.ac.id/id/eprint/5393

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