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Yusuf, Khairullah
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The Effect of Plastiment-VZ on the Compressive Strength and Flexural Strength of Lightwieght Concrete Using Aluminium Powder Yusuf, Khairullah; Siregar, Aida Rahmayani; Senin, Syahrul Fithry
International Journal of Engineering, Science and Information Technology Vol 2, No 2 (2022)
Publisher : Department of Information Technology, Universitas Malikussaleh, Aceh Utara, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (428.465 KB) | DOI: 10.52088/ijesty.v2i2.257

Abstract

One of the approaches to producing lightweight concrete is by adding the aluminum powder to the cement mixture to create air bubbles in the concrete as such enabling pores to appear in the concrete. Aluminum powder can reduce the weight of lightweight concrete despite its tendency to reduce compressive strength. The compressive strength of concrete can be increased by certain methods, one of which is by the addition of Plastiment-VZ admixture. This study aims to investigate the effect of the use of Plastiment-VZ admixture on the compressive strength and flexural strength of lightweight concrete. The normal concrete compressive strength is designed to the range of 0.7 MPa – 5.0 MPa. The concrete testing specimens were in the form of a cube of 15 cm x 15 cm x 15 cm for the compressive test and beams with dimensions of 15 cm x 15 cm x 60 cm for the flexural test. The test results of the compressive strength obtained for normally aerated concrete (0% of Plastiment-VZ) is 6.31 MPa; and for the variation of 0.2% is 6.52 MPa, for 0.4% is 6.8 MPa, and for 0.6% is 8.04 MPa. The highest increase in strength occurred at 0.6% variation, which is 27.46% above normally aerated concrete. The degrees of flexural strength of the concrete produced from each variation of 0%; Based on the findings, it can be concluded that Plastiment-VZ has a significant effect on increasing the compressive strength and flexural strength of lightweight concrete. The more quantity of Plastiment-VZ is used, the higher the compressive strength and flexural strength are produced; even though, the optimum level for the use of Plastiment-VZ for aerated concrete has not been found.
PERENCANAAN JARINGAN PERPIPAAN AIR MINUM MENGGUNAKAN APLIKASI WATERCAD V8-I Wesli, Wesli; Fasdarsyah, Fasdarsyah; Kurniawan, Indra; Yusuf, Khairullah; Akbar, Said Jalalul; Maizuar, Maizuar; Arfiandi, Joni
Teras Jurnal : Jurnal Teknik Sipil Vol. 11 No. 2 (2021): Volume 11 Nomor 2, September 2021
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v11i2.554

Abstract

Abstrak Pelayanan kebutuhan air di wilayah IKK Bukit Oregon kurang memadai diduga jaringan pipa menjadi pokok masalahnya sehingga berdasar hal tersebut maka diperlukan evaluasi jaringan perpipaan air minum dan design dibuat dengan menggunakan software Aplikasi Watercad V8-I dan ingin diketahui seberapa besar kebutuhan debit pada proyeksi tahun 2030 termasuk kapasitas pompa dan jenis pipa transmisinya. Hasil pengamatan secara langsung di wilayah studi pada pelayanan terdapat permasalahan yang terjadi pada pipa transmisi, yaitu pipa dari intake (sumber air baku utama) menuju ke Instalasi Pengolahan Air (IPA) yang akan di distribusikan ke masyarakat. Permasalahan yang terjadi adalah pipa induk tersebut mengalami kebocoran akibat umur teknis pipa yang sudah tua. Meningkatnya jumlah penduduk sama halnya semakin meningkatnya pemenuhan akan kebutuhan air bersih. Permasalahan tersebut harus ditanggulangi dengan pergantian pipa dengan jenis dan diameter yang tepat serta kapasitas pompa yang sesuai hasil menggunakan software Watercad V8-i. Dari hasil perhitungan analisa pertumbuhan penduduk pada tahun 2030 dengan jumlah pelanggan 96.770 jiwa kebutuhan air mencapai 102,476 liter/detik. Sistem transmisi menggunakan sistem pompa dengan kapasitas terpasang 90 liter/detik. Jenis pipa yang dipakai untuk pipa transmisi menggunakan pipa HDPE dengan diameter 350 mm. Kata kunci: evaluasi, air bersih, perpipaan, pompa, Watercad V8-i   Abstract The service for water needs in the IKK Bukit Oregon area is inadequate, it is suspected that the pipeline network is the main problem, so based on this, it is necessary to evaluate the drinking water piping network and the design is made using the Watercad V8-I application software and wants to know how much the demand for discharge in the 2030 projection includes pump capacity and type of transmission pipe. The results of direct observations in the study area on the service there are problems that occur in the transmission pipe, namely the pipe from the intake (main raw water source) to the Water Treatment Plant (IPA) which will be distributed to the community. The problem that occurs is that the main pipe has a leak due to the technical age of the pipe which is old. The increasing population is the same as the increasing fulfillment of clean water needs. These problems must be overcome by changing the pipe with the right type and diameter and the pump capacity according to the results using the Watercad V8-i software. From the calculation results of population growth analysis in 2030 with the number of customers 96,770 people, water needs reach 102,476 liters/second. The transmission system uses a pump system with an installed capacity of 90 liters/second. The type of pipe used for the transmission pipe uses HDPE pipe with a diameter of 350 mm. Keywords: evaluation, clean water, piping, pump, Watercad V8-i 
Analisis Stabilitas Lereng Sungai Tamiang Kampung Rantau Pakam Yusuf, Khairullah; Al Hadi, Yassin; Maulani, Emi; Akbar, Said Jalalul; Arfiandi, Joni
Teras Jurnal : Jurnal Teknik Sipil Vol. 13 No. 2 (2023): Volume 13 Nomor 2, September 2023
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v13i2.941

Abstract

Abstrak Lereng merupakan permukaan tanah yang memiliki beda tinggi. Ketidakstabilan lereng menyebabkan bencana keruntuhan yang menyebabkan kerugian secara materil maupun korban jiwa. Pada lereng Sungai Aceh Tamiang, Kampung Rantau Pakam, Provinsi Aceh sering terjadi bencana keruntuhan sehingga perlu dilakukan penelitian terhadap stabilitas lereng. Penelitian bertujuan mengetahui nilai faktor keamanan lereng dan meningkatkan nilai stabilitas lereng sungai dengan perkuatan lereng. Metode analisis menggunakan metode Bishop untuk perhitungan secara manual dan Metode Elemen Hingga menggunakan bantuan software Plaxis 2D. Jenis perkuatan stabilitas lereng menggunakan soil nailing dan dinding MSE. Hasil penelitian menunjukkan nilai faktor keamanan lereng eksisting tidak memenuhi persyaratan minimum kestabilan lereng maka perlu perkuatan lereng. Hasil perhitungan faktor keamanan stabilitas lereng dengan perkuatan soil nailing sebesar 1,335 lebih kecil dari persyaratan sebesar 1,5. Faktor keamanan stabilitas lereng dengan perkuatan dinding MSE sebesar 1,457 lebih besar dari persyaratan sebesar 1,3. Hasil analisis menunjukkan bahwa metode MSE lebih sesuai digunakan untuk perkuatan lereng. Kata kunci: Dinding MSE, faktor keamanan, metode Bishop, Plaxis 2D, soil nailing  AbstractThe slope is a ground surface that has a height difference. The instability of the slope can cause catastrophic collapse which causes material loss and loss of life. On the slopes of the Aceh Tamiang River, Rantau Pakam Village, Aceh Province, collapse of the slopes often occurs, so it is necessary to conduct research on slope stability. The research aims to determine the value of the slope safety factor and increase the stability value of river slopes by strengthening the slopes. The analytical method uses the Bishop method for manual calculations and the Finite Element Method uses Plaxis 2D software. The type of slope stability strengthening using soil nailing and MSE walls. The results showed that the value of the factor of safety for the existing slope did not meet the minimum requirements for slope stability, so it needed to strengthen the slope. Based on the analysis, the safety factor for slope stability with soil nailing strengthening is 1.335, which is less than the requirement of 1.5. The safety factor for slope stability with the MSE wall strengthening is 1.457, which is greater than the requirement of 1.3 for such method strengthening. The results of the analysis show that the MSE method is more suitable for slope strengthening at the location. Keywords: MSE wall, safety factor, bishop method, Plaxis 2D, soil nailing
Co-Authors Al Hadi, Yassin Arfiandi, Joni Emi Maulani Fasdarsyah Fasdarsyah Indra Kurniawan Maizuar Maizuar Said Jalalul Akbar, Said Jalalul Senin, Syahrul Fithry Siregar, Aida Rahmayani Wesli Wesli