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KAJIAN BAHAN PENGISI (FILLER) PADA CAMPURAN PANAS ASPAL AGREGAT (AC-BC) DENGAN PENGUJIAN MARSHALL Nofrianto, Hendri; Wahab, Wilton; Syofian, Naldi; Wardi, Syafri
Menara Ilmu Vol 15, No 1 (2021): VOL. XV NO. 1 JANUARI 2021
Publisher : LPPM Universitas Muhammadiyah Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31869/mi.v15i1.2381

Campuran aspal panas agregat terdiri dari agregat kasar, agregat halus, dan filler yang dicampur dengan bitumen dalam jumlah tertentu dengan perbandingan yang proporsional pada kondisi panas tertentu dengan alat Asphalt Mixing Plant. Campuran aspal panas dipengaruhi oleh sifat-sifat aspal dan sifat campuran padat material. Filler pada campuran aspal panas walaupun memiliki kandungan sekitar 1% sampai dengan 2% tetapi sangat mempengaruhi sifat aspal sebagai bahan pengikat. Partikel halus akan bereaksi terhadap sifat bitumen. Sifat penelitian ini adalah studi kasus dengan metode eksperimental. Lokasi penelitian di Sungai Tuak Kabupaten Kerinci, dan percobaan di Laboratorium Balai Pengujian Lingkungan dan Konstruksi Dinas Pekerjaan Umum dan Tata Ruang Provinsi Sumatera Barat. Hasil penelitian ini menyimpulkan bahwa ketentuan agregat Sungai Tuak dapat digunakan sebagai perkerasan lentur AC-BC dengan penambahan filler sebesar 2%. Pengisi yang ditambahkan pada perkerasan fleksibel dapat berupa pengisi semen atau pengisi abu terbang. Dari hasil pengujian Marshall, penambahan semen pengisi 2% secara keseluruhan memenuhi persyaratan kecuali pada Void Isi Bitumen dan Void dalam Campuran dengan kadar aspal 4,5% dan 5,0% diluar spesifikasi. Serta penambahan filler fly ash sebesar 2%. Namun pada kadar aspal 5,5%, 6,0% dan 6,5% memenuhi spesifikasi. Jadi kadar aspal yang dapat digunakan untuk penambahan filler fly ash 2% adalah 5,5%, 6,0% dan 6,5%. Kata kunci: uji Marshall, AC-BC, VIM, VMA, VFWA

Pengaruh Penambahan Zat Aditif Fosroc Conplast R dan Fosroc SP 337 Terhadap Kuat Tekan Beton Dengan Variasi Kadar Air Syafri Wardi; Aulia Kartika Sridewi; Arman A.
Media Ilmiah Teknik Sipil Vol 10 No 1 (2021): Media Ilmiah Teknik Sipil
Publisher : Institute for Researches and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/mits.v10i1.2304

Fosroc Conplast R and Fosroc SP 337 are additives for the concrete mixture which are used to delay the setting time of the concrete mixture, thus, it can extend the time for the concreting work. Previous studies have verified that the addition of Fosroc SP 337 and/or Fosroc Complast R additives increases the compressive strength of concrete, but no previous studies have investigated the effect of adding these additives on the compressive strength of concrete with variations in water-cement ratio. Therefore, this research is conducted to investigate the effect of adding Fosroc Conplast R and Fosroc SP 337 additives on the compressive strength of concrete with variations in water-cement ratio, by conducting the test on properties of the materials for designing the concrete mixture proportion, then the compressive strength test is conducted and the compressive strength of concrete is compared with the design compressive strength based on SNI 03-2834-2000. The compressive strength test was conducted at the concrete age of 7 and 28. Concrete with the addition of 1% Fosroc Conplast R and 1% Fosroc SP 337 additives, produces a higher compressive strength than the design strength of normal concrete without additives, thus, this additive is applicable to extend the time for the concreting work in the construction field

Pengaruh Penggunaan Agregat Kasar dan Halus dari Quarry Siulak Deras dan Quarry Sungai Rumpun di Kabupaten Kerinci terhadap Kuat Tekan Beton Normal Syafri Wardi; Dandia Dinul Rahmi
INSOLOGI: Jurnal Sains dan Teknologi Vol. 1 No. 3 (2022): Juni 2022
Publisher : Yayasan Literasi Sains Indonesia

In Kerinci Regency, especially around areas of Gunung Tujuh and Siulak areas, people generally use materials from Sungai Rumpun quarry and Siulak Deras quarry for the concrete mixture. A preliminary test by organic impurity test showed that the organic substances in the aggregate from the Sungai Rumpun quarry had a high organic content, while the aggregate from the Siulak Deras quarry had a low organic content. Therefore, this study aims to investigate the characteristics of the aggregate from Sungai Rumpun quarry and the Siulak Deras quarry and to determine the effect of the use of coarse and fine aggregate from both quarries on the compressive strength of concrete. This study is an experimental research that is conducted at the Civil Engineering Laboratory of the Padang Institute of Technology (ITP). In this study, the tests for physical properties of coarse and fine aggregates are conducted, then samples for the concrete compressive test are prepared, and the compressive strength test is carried out. Based on the results of this study, it can be concluded that aggregates from the Sungai Rumpun quarry are not recommended to be used for the concrete mixture of normal strength concrete (fc'=20 MPa), because the results of the compressive strength test showed that the average compressive strength does not reach the designed compressive strength (fc'). On the other hand, the aggregates from the Siulak Deras are recommended to be used for the concrete mixture of normal strength concrete because the compressive strength reaches the designed compressive strength.

Analisis Kinerja Ruas Jalan (Studi Kasus: Jalan Raya Siteba Kota Padang) Syafri Wardi; Nila Omi Yeza; Septi Anita
Jurnal Teknik Sipil Institut Teknologi Padang Vol 8 No 2 (2021): Jurnal Teknik Sipil Institut Teknologi Padang
Publisher : ITP Press

Jalan Raya Siteba merupakan jalan perkotaan dua lajur dua arah tak terbagi di Kota Padang yang berada pada salah satu daerah komersil di Kota Padang. Berdasarkan observasi awal yang dilakukan terlihat bahwa sering terjadi kemacetan di ruas jalan tersebut, terutama pada jam sibuk di pagi dan sore hari. Penelitian ini bertujuan untuk mengevaluasi kinerja ruas Jalan Raya Siteba yang ditinjau dari tingkat pelayanan (LOS) dan memberikan rekomendasi untuk peningkatan kinerja ruas jalan tersebut. Analisis tingkat pelayanan ruas jalan dilakukan berdasarkan pada metode MKJI 1997 menggunakan data primer berupa data geometrik jalan, volume lalu lintas dan hambatan samping yang didapatkan dari survei lapangan, serta data sekunder berupa data jumlah penduduk. Hasil analisis tingkat pelayanan (LOS) ruas jalan ini pada jam puncak di pagi hari menunjukkan tingkat pelayanan pada kategori E yang berarti volume lalu lintas mendekati/berada pada kapasitas ruas jalan, arus lalu lintas tidak stabil, dan kecepatan terkadang terhenti. Alternatif solusi yang disarankan yaitu dengan pemasangan pemisah arah untuk mengubah tipe jalan menjadi jalan dua lajur dua arah terbagi, yang dapat meningkatkan tingkat pelayanan ruas jalan menjadi level C. Alternatif solusi lainnya yang diusulkan adalah dengan memindahkan salah satu arah arus lalu lintas sehingga jalan tersebut menjadi jalan dua lajur satu arah, yang dapat meningkatkan tingkat pelayanan ruas jalan tersebut menjadi level B.

Tinjauan Tipikal Detail Rangka Beton Bertulang Berdasarkan Ketentuan Detailing Sistem Rangka Pemikul Momen Khusus Untuk Bangunan Ruko Bertingkat Dua di Kota Padang Syafri Wardi; M. Rizky Prima Putra Asril
TERAS JURNAL Vol 12, No 2 (2022): Volume 12 Nomor 2, September 2022
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v12i2.761

Abstrak Gempa pada tahun 2009 di Kota Padang menyebabkan banyak kerusakan pada bangunan gedung, terutama pada bangunan ruko bertingkat dua. Runtuhnya bangunan ini diakibatkan karena bangunan tersebut sudah tidak bisa menahan beban seismik dan/atau tidak memenuhi ketentuan detailing untuk struktur tahan gempa. Penelitian ini bertujuan untuk mendesain bangunan tipikal ruko yang mampu menahan beban seismik dan memenuhi ketentuan detailing untuk SRPMK (Sistem Rangka Pemikul Momen Khusus), berdasarkan peraturan SNI 1726:2019 dan SNI 2847:2019. Penelitian ini meninjau dua model tipikal gedung ruko dengan panjang bentang yang berbeda dan dianalisis menggunakan aplikasi SAP 2000. Detailing elemen stuktur kolom dan balok didesain manual berdasarkan persyaratan untuk SRPMK. Hasil analisis struktur menunjukkan bahwa untuk kedua model gedung, simpangan antar lantai (drift) kecil dari simpangan izin, yang berarti ukuran penampang elemen beton bertulang yang digunakan telah memenuhi syarat. Dari hasil penelitian ini, didapatkan tipikal desain rangka (kolom dan balok) untuk struktur bangunan bertingkat dua di Kota Padang sebanyak dua model dengan panjang bentang bangunan beragam, yang dapat menjadi pedoman untuk detail struktur untuk tipikal bangunan ruko dua tingkat di Kota Padang. Kata kunci: detailing, kolom kuat balok lemah, rumah toko, sistem rangka pemikul momen khusus, gedung tahan gempa Abstract The 2009 earthquake in Padang city caused severe damage to many buildings, particularly shophouse buildings. The buildings collapsed because they couldn’t resist the seismic load and/or didn’t satisfy the requirement of detailing for seismic-resistant buildings. This study aims to design a typical shophouse building that can resist the seismic load and satisfy the requirement for the detailing of SMRF (Special Moment Resisting Frame), based on the design codes of SNI 2847:2019 and SNI 1726:2019. This study considers two building models with different span lengths and the structural analysis was conducted using SAP 2000. Detailing for columns and beams was designed based on requirements for SMRF. The results of the structural analysis showed that the story drift of both building models is smaller than the allowable drift, which means that the cross-sectional size of the reinforced concrete elements has met the requirements. The results of this study are the typical frame design (columns and beams) for two-story buildings in the city of Padang for two models with various spans, which can be used as guidelines for structural details for a typical two-story shophouse building in Padang City. Keywords: detailing, strong column weak beam, shophouse, special moment resisting frame, seismic resistant building

PENGARUH PENGGUNAAN SERBUK CANGKANG LANGKITANG ( FAUNUS ATER ) SEBAGAI BAHAN TAMBAH TERHADAP KUAT TEKAN BETON NORMAL A, Arman; Wardi, Syafri; Sonata, Herix; Iqbal, Muhammad
Ensiklopedia of Journal Vol 6, No 3 (2024): Vol. 6 No. 3 Edisi 1 April 2024
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33559/eoj.v6i3.2277

Langkitang shell is a food waste that has potential benefits that can be used as powder as a mixture in the manufacture of pozzolanic containing CaCO3 (Calcium Carbonate), SiO2 (Silicon Dioxide) which these compounds are also found in sand and cement. The purpose of this research is to know the physical properties of sand and the physical properties of langkitang shell powder as a constituent of normal concrete, to know the effect of using langkitang shell powder as an added ingredient to the concrete mix on the compressive strength of normal concrete, and to know the optimum percentage of langkitang shell as an added material for get the maximum normal compressive strength of concrete. The research method used is the experimental method, the experimental method in this study was carried out by comparing the concrete to be tested. In this study, the percentage of the variation of langkitang powder used was 1%, 2.5%%, and 4%. With the test object in the form of a cube with dimensions of 15 cm x 15 cm x 15 cm, and the planned compressive strength of K-250. The results obtained from normal concrete with a compressive strength of 269.46 kg/cm², and the results of the quality of concrete used K-250 which were tested at the age of 28 days were 12 samples and consisted of 3 variations, each variation of 3 samples (1 %, 2.5%,4% ). From the research, it was obtained that the compressive strength of the mixed concrete variation of 1% was 323.4 kg/cm², 2.5% was 321.6 kg/cm², and the results of the 4% concrete compressive strength was 254.63 kg/cm². Researchers can conclude based on the results from the laboratory of PT. Jaya Sentrikon Indonesia. The results of the compressive strength of concrete decreased in the 4% variation mixture, namely 254.63 kg/cm², and the highest concrete compressive strength at 1% was 323.4 kg/cm². It can be concluded in this study that the more substances mixed with langkitang shell powder are used, the lower the value of the compressive strength of the resulting concrete.Keywords: Langkitang Shell, Sikacim Concrete Additive, Compressive Strength, Normal Concrete.

Analisis Kinerja Seismik Gedung dengan Pushover Analysis (Studi Kasus: Gedung Perkantoran Tiga Tingkat yang Runtuh Akibat Gempa Palu 2018): Building Seismic Performance Analysis with Pushover Analysis (Case Study: Three-level Office Building Collapsed Due to the 2018 Palu Earthquake) Wardi, Syafri; Ramadhani, Utari
Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Vol. 12 No. 1 (2023): Cantilever
Publisher : Department of Civil Engineering and Planning, Faculty of Engineering, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35139/cantilever.v12i1.190

Indonesia is an earthquake-prone country. The 2018 earthquake in Palu, Sulawesi, caused significant damage or collapse of the buildings. This research is aimed to evaluate the seismic performance of a three-story office building at Tadulako University and to evaluate what caused the collapse of the building. Evaluation of seismic performance was conducted using the default plastic hinge in SAP2000. The analysis results showed that the plastic hinge occurred first at the end of the beam, followed by the plastic hinge at the end of the column. The performance point from the intersection of the capacity curve and capacity spectrum based on ATC-40 indicated that the performance level of the building was damage control, which means that the building can resist seismic force and has a low risk of human death. These results did not represent the post-earthquake condition in which the building collapsed due to failure of the beam-column joint because the shear reinforcement was not installed in the beam-column joints. Further studies are necessary in order to develop an analysis model, including the failure model of the beam-column joint.

PENGARUH PENAMBAHAN SERAT KAWAT BENDRAT TERHADAP KUAT TEKAN DAN KUAT TARIK BETON NORMAL A, Arman; Sanjaya, Faldi; Wardi, Syafri
Jurnal Teknologi dan Vokasi Vol 1 No 1 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.1.21-30

Along with the progress of the times, technology in the field of building construction has also experienced rapid development, including concrete technology, almost every aspect of human life is always related to concrete. The use of added materials has been widely used in the concrete mix process. Based on this, this study aims to determine the increase in the compressive strength and optimal split tensile strength of concrete with added material of bendrat wire fiber, and the percentage addition of 0%, 4%, 5%, 6%, the tensile strength of concrete is only around 9% - 15 % of compressive strength. The approximation value obtained from repeated testing reaches a strength of 0.50 – 0.60ƒ????′, so for zero-mal concrete a value of 0.57ƒ????′ can be used. The analysis review of this research is the compressive strength and split tensile strength, with a concrete cylinder test object with a diameter of 15 cm and a height of 30 cm. The results obtained from normal concrete with a compressive strength of 9,62 N/mm2, and a compressive strength of 4%, with a result of 13,01 N/mm2, and a compressive strength of 5%, with a result of 12,45 N/mm2, and a compressive strength of 6 %, with a yield of 11,03 N/mm2. The quality of the concrete planned for K 225 which was tested at the age of 3 and 28 days was 48 samples and consisted of 3 variations, each variation of 6 samples. From the research, it was found that the highest compressive strength of concrete at the age of 3 days was 12,45 Mpa with, at the age of 28 days the highest compressive strength of concrete was 22,08 Mpa. The lowest compressive strength value of concrete at the age of 3 days is 9,62 Mpa with the lowest value of concrete compressive strength at the age of 28 days is 14,72 Mpa. It can be concluded in this study that the more wire fibers used, the higher the value of the compressive strength of concrete. From the research, it was found that the highest split tensile strength of concrete at the age of 3 days was 13,01 Mpa with, at the age of 28 days the highest value of the split tensile strength of concrete was 22,08 Mpa. The value of the lowest split tensile strength of concrete at the age of 3 days is 9,62 Mpa with the lowest value of split tensile strength of concrete at the age of 28 days is 14,72 Mpa. It can be concluded in this study that the more wire fibers used, the higher the value of the compressive strength of concrete.

PENGARUH PENAMBAHAN ABU ARANG TEMPURUNG KELAPA TERHADAP KUAT TEKAN PAVING BLOCK A, Arman; Mulyati, Mulyati; Wardi, Syafri; Roza, Angelalia; Sonia Putra, Didi
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.2023.1.2.23-30

Paving Block is a building material made from a mixture of cement, sand and water. Paving blocks are widely used in the construction sector, such as sidewalks, highways, parking lots, parks and others. Ease of installation, inexpensive maintenance and fulfilling aspects of beauty make paving blocks more preferred. Along with the many developments such as houses, parks, roads in the midst of today's society, this has resulted in the need for paving blocks increasing. Because the hardening process takes quite a long time, therefore, to speed up hardening, this study added coconut shell ash. In this study using a ratio of 1 Pc: 3 Ps and the addition of coconut shell ash with variations of 0%, 2.5%, 5% and 7.5% by weight of cement. The average compressive strength value of paving block plans is a minimum of 12.5 MPa and a maximum of 15 MPa for grade C which is used for pedestrians and other uses, with rectangular specimens measuring 20 cm x 10 cm x 6 cm of 24 pieces with age 28 days testing for compressive strength and water absorption test. Based on the test results, the normal compressive strength of paving blocks was 13 MPa, the addition of 2.5% coconut shell ash was 13.5 MPa, 5% shell ash was 14.5 MPa, the addition of 7.5% coconut shell ash was 12. .83 MPa. Based on the test results, the normal Paving Block water absorption value was 7.8%, 2.5% shell ash was 7.22%, the addition of 5% shell ash was 6.3%, 7.5% shell ash was 4.89%. Thus, it can be stated that the effect of Coconut Shell Ash can increase compressive strength and reduce water absorption. The highest compressive strength and lowest water absorption were obtained at the addition of 5% for the compressive strength and the lowest water absorption was obtained at the addition of 4.89%.

PENGARUH PENAMBAHAN SERAT KAWAT BENDRAT TERHADAP KUAT TEKAN DAN KUAT TARIK BETON NORMAL A, Arman; Sanjaya, Faldi; Wardi, Syafri
Jurnal Teknologi dan Vokasi Vol 1 No 1 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.1.21-30

Along with the progress of the times, technology in the field of building construction has also experienced rapid development, including concrete technology, almost every aspect of human life is always related to concrete. The use of added materials has been widely used in the concrete mix process. Based on this, this study aims to determine the increase in the compressive strength and optimal split tensile strength of concrete with added material of bendrat wire fiber, and the percentage addition of 0%, 4%, 5%, 6%, the tensile strength of concrete is only around 9% - 15 % of compressive strength. The approximation value obtained from repeated testing reaches a strength of 0.50 – 0.60ƒ????′, so for zero-mal concrete a value of 0.57ƒ????′ can be used. The analysis review of this research is the compressive strength and split tensile strength, with a concrete cylinder test object with a diameter of 15 cm and a height of 30 cm. The results obtained from normal concrete with a compressive strength of 9,62 N/mm2, and a compressive strength of 4%, with a result of 13,01 N/mm2, and a compressive strength of 5%, with a result of 12,45 N/mm2, and a compressive strength of 6 %, with a yield of 11,03 N/mm2. The quality of the concrete planned for K 225 which was tested at the age of 3 and 28 days was 48 samples and consisted of 3 variations, each variation of 6 samples. From the research, it was found that the highest compressive strength of concrete at the age of 3 days was 12,45 Mpa with, at the age of 28 days the highest compressive strength of concrete was 22,08 Mpa. The lowest compressive strength value of concrete at the age of 3 days is 9,62 Mpa with the lowest value of concrete compressive strength at the age of 28 days is 14,72 Mpa. It can be concluded in this study that the more wire fibers used, the higher the value of the compressive strength of concrete. From the research, it was found that the highest split tensile strength of concrete at the age of 3 days was 13,01 Mpa with, at the age of 28 days the highest value of the split tensile strength of concrete was 22,08 Mpa. The value of the lowest split tensile strength of concrete at the age of 3 days is 9,62 Mpa with the lowest value of split tensile strength of concrete at the age of 28 days is 14,72 Mpa. It can be concluded in this study that the more wire fibers used, the higher the value of the compressive strength of concrete.

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