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All Journal Jurnal Rekayasa Prosiding Seminar Nasional Hasil Penelitian Sains, Teknik dan Aplikasi Industri Fakultas Teknik Universitas Lampung
Surya Sebayang
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Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Other

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CORRELATION BETWEEN RICE HUSK ASH AS SUBSTITUTION MATERIALS THE AMOUNT OF CEMENT AND PROPERTIES OF HIGH STRENGTH FLOWING CONCRETE Surya Sebayang
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 15, No 1 (2011): Edisi April Tahun 2011
Publisher : UNIVERSITAS LAMPUNG

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Abstract

Flowing concrete flow under it own weight and maintain homogeneity while filling and passing around congested reinforcement. Flowing concrete is used to reduce or eliminate the need for vibration to reduce construction cost and reducing construction time. High strength flowing concrete in this research used rice husk ash as substitution material the amount of cement. The properties investigated are workability, concrete setting time, and compression strength.Proportion of material for concrete determined according to ACI 211-4R-1993 and combine with Hashimoto method. The substitution of rice husk ash to the concrete are 0 %, 3%, 6%, 9%, 12% and 15% of the cement content. The test result indicated that effect of rice husk ash in fresh concrete was increased the workability of the concrete. Addition of rice husk ash was made fresh concrete enough cohesiveness without causing segregation. Addition of rice husk ash was increased the initial and final setting time. The cylinder compression strength of rice husk ash flowing concrete at 7day and 14 days was lower than compression strength of flowing concrete without rice husk ash at the same days. The optimum strength of rice husk ash flowing concrete was 44,44 MPa at 56 days age in 12 % presence of rice husk ash.
Pemanfaatan Recycled Coarse Aggregate (RCA) sebagai Alternatif Pengganti sebagian Agregat Kasar pada Beton Laksmi Iriyanti; Surya Sebayang; vera A.N.; Ofik T.P.; Yoleta T.P.
Prosiding Seminar Nasional Ilmu Teknik Dan Aplikasi Industri Fakultas Teknik Universitas Lampung Vol. 5 (2022): SINTA
Publisher : Fakultas Teknik Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (244.264 KB) | DOI: 10.23960/prosidingsinta.v5i.71

Abstract

Ketersediaan agregat kasar di pasaran yang semakin menurun serta semakin banyaknya limbah industri konstruksi berupa limbah beton, salah satunya beton hasil pengujian di Laboratorium Bahan dan Konstruksi, Fakultas Teknik, Universitas Lampung. Perlu dilakukan penelitian untuk mengetahui nilai kuat tekan, nilai kuat tarik belah, berat volume dan pengaruh faktor koreksi umur beton jika dilakukan substitusi sebagian agregat kasar dengan Recycle Coarse Aggregate (RCA) kuat tekan rencana sebesar 25 MPa dan benda uji silinder 150x300mm.Berdasarkan analisis data penelitian didapat bahwa dari setiap faktor umur beton 7, 14 dan 28 hari serta variasi substitusi sebagian agregat kasar dengan kadar 25%, 50% dan 100% RCA mengalami penurunan nilai kuat tekan dan tarik belah beton pada setiap umur pengujian dibandingkan dengan kadar 0% RCA. Untuk nilai kuat tekan dengan nilai rata-rata pada setiap umur beton secara berurutan kadar RCA 0%, 25%, 50% dan 100% yaitu umur 7 hari 23,03MPa, 22,57MPa, 18,63MPa dan 16,71MPa, umur 14 hari 28,29MPa, 28,11MPa, 27,48MPa dan 21,79MPa serta umur 28 hari 28,53MPa, 28,16MPa, 27,90MPa dan 27,74MPa. Untuk nilai kuat tarik belah beton dengan nilai rata-rata pada setiap umur beton secara berurutan kadar RCA 0%, 25%, 50% dan 100% yaitu umur 7 hari 2,40MPa, 2,27MPa, 2,09MPa dan 1,79MPa, umur 14 hari 2,71MPa, 2,67MPa, 2,49MPa dan 1,92MPa serta umur 28 hari 2,81MPa, 2,78MPa, 2,72MPa dan 2,48MPa.
Co-Authors Andi Kusnadi Bayzoni Bayzoni Chatarina Niken DWSBU Corry Jayaputri Sahast Devie Arisandy Sumantri Hasti Riakara Husni I Gede Putu Indra Aditya I Wayan Diana Joksan Arif Laksmi Irianti Laksmi Iriyanti Masdar Helmi Mohammad Salman Manan Mohd Isneini Nur Mila Putri Ofik T.P. Robby Chandra Hasyim Siti Zalfa Mardhatillah Suyadi Suyadi Tri Ratna Utami vera A.N. Vera Agustriana Noorhidana Yoleta T.P. Zainal Arifin