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PENGARUH PENAMBAHAN ABU ARANG TEMPURUNG KELAPA TERHADAP KUAT TEKAN PAVING BLOCK Arman A; Mulyati Mulyati; Syafri Wardi; Angelalia Roza; Didi Sonia Putra
Jurnal Teknologi dan Vokasi Vol 1 No 2 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.2.3

Abstract

Paving Block adalah bahan bangunan yang dibuat dari campuran semen, pasir dan air. Paving Block banyak digunakan dalam bidang konstruksi, seperti tortoar, jalan raya, lahan parkir, taman dan lainnya. Kemudahan dalam pemasangan, perawatan yang murah serta memenuhi aspek keindahan mengakibatkan paving block lebih banyak disukai. Seiring dengan banyaknya pembangunan seperti rumah, taman, jalan di tengah-tengah masyarakat saat ini, sehingga mengakibatkan kebutuhan paving block semakin meningkat. Karena proses pengerasannya membutuhkan waktu yang cukup lama, maka dari itu untuk mempercepat pengerasan, penelitian ini menanbahkan bahan Abu Tempurung Kelapa. Dalam penelitian ini menggunakan perbandingan 1 Pc: 3 Ps dan ditambahan Abu Tempurung kelapa dengan Variasi 0 %, 2,5 %, 5 %, dan 7,5 % dari berat semen. Nilai kuat tekan paving block rencana rata-rata Minimal 12,5 MPa dan Maksimal 15 MPa untuk mutu C yang dipergunakan untuk Pejalan kaki dan penggunaan lain, dengan benda uji persegi panjang dengan ukuran 20 cm x 10 cm x 6 cm sebanyak 24 buah dengan umur pengujian 28 hari untuk pengujian kuat tekan dan penyerapan air. Berdasarkan hasil pengujian didapatkan nilai kuat tekan paving block normal sebesar 13 Mpa, penambahan Abu Tempurung Kelapa 2,5 % didapatkan sebesar 13,5 MPa, Abu Tempurung 5 % didapatkan sebesar 14,5 Mpa, Penambahan Abu tempurung 7,5 % didapatkan sebesar 12,83 Mpa. Berdasarkan hasil pengujian didapatkan nilai penyerapan air Paving Block normal sebesar 7,8 %, Abu Tempurung 2,5 % sebesar 7,22 %, Penambahan Abu Tempurung 5 % sebesar 6,3 %, Abu Tempurung 7,5 % sebesar 4,89%. Dengan demikian dapat dinyatakan bahwa pengaruh Abu Tempurung Kelapa dapat meningkat kuat tekan dam menurunkan penyerapan air. Kuat tekan tertinggi dan penyerapan air terendah di peroleh pada penambahan 5% untuk kuat tekan dan penyerapan Air terendah diperoleh penambahan 4,89 %.
PENGARUH PENAMBAHAN SILIKA FUME TERHADAP KUAT TEKAN BETON Arman A; Mulyati Mulyati; Fajar Nugroho; Fakhrizal Fakhrizal; Hanif Fadhil Azman
Jurnal Teknologi dan Vokasi Vol 2 No 1 (2024): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2024.2.1.2

Abstract

The development of technology in Indonesia is currently experiencing a fairly rapid development, especially in the construction sector. Concrete is one of the construction materials that is often used in various types of construction such as buildings, bridges, roads, dams and other civil infrastructure. Concrete consists of a mixture of coarse aggregate, fine aggregate, cement, water and sometimes concrete can also be added with chemicals and non-chemicals in certain ratios. Therefore, this study aims to determine the effect of the addition of Silica fume on the compressive strength of concrete. In this study using Silica fume with percentages of 0%, 4%, 7%, and 10% of the cement weight with 1 sample for each percentage. Examination of the physical properties of the concrete material is carried out in the Civil Engineering laboratory of ITP and testing of the compressive strength of concrete is carried out in the laboratory of the Department of Public Works. This research uses the standard material of SNI 7656-2012. The test object used is a steel cylinder with a diameter of 150 mm x a height of 300 mm. Based on the results of the compressive strength test of concrete carried out at the Department of Public Works laboratory at the age of 28 days from normal concrete, the compressive strength value was 27.03 MPa, concrete with the addition of 4% Silica fume experienced an increase in compressive strength of 1.59% with the obtained value The compressive strength is 27.46 MPa, the concrete with the addition of 7% Silica fume has decreased the compressive strength by 8.38% with the obtained compressive strength value of 24.76 Mpa, and the concrete with the addition of 10% Silica fume has decreased the compressive strength by 26.89% with the obtained compressive strength value of 19.76 Mpa. From this data it is known that the optimum compressive strength value is obtained with the addition of 4% Silica fume, which is 27.46 Mpa. After conducting this research, it can be concluded that the addition of Silica fume to the mixture for making concrete can be carried out with the provisions for the addition of Silica Fume below 4% of the weight of cement.