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Easy Way To Determine The Feasibility Of Coarse Aggregate On All Pavement Layers Using The Los Angeles Tatonas TA-700 Machine Mahardi Kamalika Khusna Ali; Agata Iwan Candra; Elsa Rizqi Purwanti; Rikha Wirda Izzati; Kavindo Yugiswara Hutama; Mohammad Roziq; Herlangga Duta Pramudya
U Karst Vol 5, No 2 (2021): NOVEMBER
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6236.794 KB) | DOI: 10.30737/ukarst.v5i2.2200

Abstract

The use of coarse aggregate with poor quality can cause bumpy roads, cracked roads, potholes, and others. Coarse aggregate wear is an indicator of the aggregate resistance index against friction with other objects. Any aggregate to be used in a pavement mix must meet the wear requirements. Low wear causes the aggregate to be easily crushed when exposed to friction and has an impact on a low level of stability. The purpose of this research is to determine the feasibility of coarse aggregate in Kedak Village, Kediri. One of the feasibility of coarse aggregate is reviewed based on wear with abrasion testing. This research was conducted by using an abrasion test using the Los Angeles TA-700 machine and SNI 2417:2008 as a reference. The specimens were taken at random and met the criteria for passing the number 3/4 sieve and stuck on the 2500 gram sieve number 1/2 and the aggregate that passed the 1/2 sieve was stuck on the 3/8 sieve as much as 2500 grams. The results obtained stated that the average wear of the abrasion test was 26.6%. Based on these results, the aggregate can be said to be feasible because it does not exceed 40% in accordance with the provisions of the 2018 Binamarga General Specifications. So that coarse aggregate from Kedak Village, Kediri can be used for all mixtures of road pavement layers.
PERENCANAAN STRUKTUR ATAS BANGUNAN GUDANG BAJA BERDASARKAN METODE LRFD DI KEDIRI Silviana Rohmatin; Fauzie Nursandah; Dwifi Aprillia Karisma; Mahardi Kamalika Khusna Ali
JOURNAL OF CIVIL ENGINEERING BUILDING AND TRANSPORTATION Vol. 7 No. 2 (2023): JCEBT SEPTEMBER
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jcebt.v7i1.9136

Abstract

The construction of Kediri Airport will have an impact on increasing the economy which will trigger the development  companies in the production sector to accelerate. This causes an increase in the need for warehouses as supporting facilities for various production and industrial activities. The purpose of this research is to design a warehouse with steel construction using the LRFD method. IWF and C profile steel materials are used in the warehouse superstructure planning, and SAP2000 version 14 software is used for structural analysis calculations. The data warehouse has a size of 22 x 102 meters with a building height of 15.2 meters with a ground floor of 12 meters and a roof of 3.2 meters. The calculation results show that the dimensions of the cross-section that are safe from earthquakes are profiles for columns and rafters using IWF 350.350.12.19, and gording using C 150x65x20x3.2. Planned beam-column connections using plates with a thickness of 10 mm with a bolt diameter of 16 mm totaling 6 pieces, while beam-column connections using plates with  thickness 12 mm with bolt diameter  20 mm totaling 4 units. So that the design can be used as a reference in the construction of warehouses that are strong and safe, especially against earthquakes.
Optimalisasi Kuat Tekan Beton Menggunakan Fly Ash dan Superplasticizer Fitry Rahmawaty; Agata Iwan Candra; Evita Fitrianis Hidiyati; Andri Dwi Cahyono; Zendy Bima Mahardana; Dwifi Aprillia Karisma; Mahardi Kamalika Khusna Ali; Faiz Muhammad Azhari
CIVED Vol. 10 No. 2 (2023): June 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v10i2.424

Abstract

Perekonomian Kota kediri yang meningkat menjadikan masyarakat antusias dalam berinvestasi di dunia perumahan. Dengan data dari Kepala Dinas Perumahan dan Kawasan Permukiman mengungkapkan bahwa Pemkot kediri juga telah menetapkan Rencana Detail Tata Ruang, dimana Sebagian wilayahnya diperuntukkan sebagai Kawasan perumahan dan pemukiman. Namun, masyarakat banyak beralih ke rumah bertingkat karena mampu meminimalisir lahan dan mendapatkan banyak ruang untuk anggota keluarga. Selain itu, rumah bertingkat harus didesain kokoh dan kuat agar mampu menopang beban baik beban mati maupun beban hidup dan beban-beban yang lain. Salah satu upaya memperkokoh bangunan dengan memperkuat struktur bangunannya seperti kolom dan balok. Penelitian ini bertujuan untuk meningkatkan kuat tekan beton tekan dengan penambahan fly ash (FA) dan superplasticizer (SP) dengan harapan dapat mengurangi penggunaan semen dengan mutu yang sama. Metode penelitian yang digunakan dalam penelitian ini adalah metode eksperimen dengan melakukan pengujian langsung di Laboratorium Teknik Universitas Sipil Kadiri yang mengacu pada SNI. Benda uji yang digunakan berbentuk silinder dengan ukuran 15 cm x 30 cm dengan lama pengerasan 3 hari, 7 hari, 14 hari dan 28 hari dengan kuat tekan rencana fc' 21,7 MPa. Hasil penambahan fly ash dan Superplastizer didapatkan nilai slump untuk variasi FA0%, FA4%+SP0.5%, FA8%+SP0.5% berturut-turut 13 cm, 8 cm, 6 cm dan 6 cm. Hasil penelitian pada variasi FA0%, FA4%+SP0.5%, FA8%+SP0.5%, menunjukkan kuat tekan rata-rata tertinggi terdapat pada variasi FA 8% + SP 0.5% yaitu sebesar 29.8 Mpa. Hasil penelitian menunjukan pengujian kuat tekan beton dengan penambahan fly ash dan superplasticizer mendapatkan hasil kuat tekan terbesar pada campuran beton variasi fly ash 8% dan SP 0.5 % dengan umur beton 28 hari sebesar 32,8 Mpa setara dengan K-300. Hasil tersebut dapat diaplikasikan pada pekerjanaan Kolom dan Balok pada bangunan bertingkat.
MENENTUKAN KLASIFIKASI DAN KARAKTERISTIK TANAH DAERAH BENDILJATI, SUMBERGEMPOL TULUNGAGUNG MENGGUNAKAN UJI LABORATORIUM Ma’rifatul Mumayyizah; Agata Iwan Candra; Mahardi Kamalika Khusna Ali; Alfina Iskindaria; Farikhatul Mufaidah; Moch. Risjad Aldiansyah; Ilham Rizqi Nurdian Putra; Roid Ahmad Faizin
Rang Teknik Journal Vol 7, No 1 (2024): Vol. 7 No. 1 Januari 2024
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31869/rtj.v7i1.4130

Abstract

Jumlah penduduk dan pertumbuhan ekonomi di Kabupaten Tulungagung lambat laun semakin meningkat, yang berdampak pada peningkatan serta berkembangnya pembangunan. Dalam mendirikan sebuah bangunan, hal yang pertama kali harus dilakukan adalah penyelidikan tanah. Penyelidikan tanah penting dilakukan untuk mengetahui karakteristik tanah. Penelitian ini bertujuan untuk menganalisis karakteristik tanah dari daerah Bendiljati, Kecamatan Sumbergempol Kabupaten Tulungagung. Penelitian dilakukan secara eksperimental dengan mengambil sampel tanah dari daerah Bendiljati Kecamatan Sumbergempol Kabupaten Tulungagung. Jenis tanah diklasifikasikan menggunakan AASHTO dan USCS. Juga dilakukan pengujian liquid limit, plastic limit, pemadatan, dan kuat geser tanah. Hasil penelitian didapatkan klasifikasi tanah menurut USCS, tanah termasuk jenis SP-SM dengan gradasi buruk, dan pada klasifikasi AASHTO, tanah termasuk A-2-4 yang mempunyai rating Excellent to Good. Dari uji batas Atterberg didapatkan nilai indeks plastisitas sebesar 0,564% sehingga tanah termasuk kategori slightly plastic. Pada uji pemadatan didapatkan nilai berat volume kering maksimum sebesar 1,50 gr/cm pada kadar air optimum 26,04% yang dapat digunakan untuk rekomendasi pemadatan jenis tanah SP-SM. Dan di uji kuat geser diperoleh nilai sudut geser sebesar 24,837° dengan nilai kohesi sebesar 0,459 kPa, dari nilai tersebut dapat digunakan sebagai dasar dalam perencanaan pondasi. Hasil penelitian ini dapat digunakan sebagai referensi untuk proyek konstruksi di sekitar area kabupaten Tulungagung.
Increasing Soil Bearing Capacity and Shear Modulus with Recycle Concrete Aggregate Pertiwi, Sheila Ananda Putri; Candra, Agata Iwan; Karisma, Dwifi Aprillia; Ali, Mahardi Kamalika Khusna
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 12 No 2 (2024): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (July 2024)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v12i2.9517

Abstract

Soil is an important component in building construction because it supports the structure. Clay soils often pose problems due to their high potential for swelling and shrinkage, which can result in cracking and building settlement. Stabilization of clay soil is an important solution. This research aims to evaluate the effect of recycled aggregate concrete (RCA) from laboratory construction waste on the characteristics of clay soil. The research method involved laboratory experiments, with a mixture of clay and RCA at 5%, 10%, and 15% variations. Testing includes Atterberg Limit, Standard Proctor Test, and Unconfined Compressive Strength (UCS). The results showed that adding RCA increased clay soil's bearing capacity and shear modulus. The peak bearing capacity was achieved by adding 5% RCA, with a Qu value reaching 265.24 kN/m². The shear modulus also increased from 41.63 MPa to 62.442 MPa with the addition of 5% RCA. Thus, the addition of RCA from laboratory construction waste can increase the bearing capacity and shear modulus of clay soil to support construction safety and the principles of sustainable development.
The Optimum Vibration of the Compressive Strength of Concrete Specimen Karisma, Dwifi Aprillia; Candra, Agata Iwan; Ali, Mahardi Kamalika Khusna; Sari, Tiara Sherlyta; Pertiwi, Sheila Ananda Putri
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 18 No. 2 (2022): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v18i2.54522

Abstract

Concrete is the primary material in construction, so it needs further research to get good quality concrete. The quality and durability of concrete are influenced by the amount and shape of the air cavity inside the concrete. With vibrating, the air that is inside the concrete will be lost. The benefits of vibration will only be achieved if planned and implemented with a suitable method. With proper vibration, the air in the concrete will come out and make porous concrete. Reduction or removal of air cavities will make concrete mixes strong with low permeability, increasing the durability of concrete. This study aims to determine the optimum strong vibrating on the compressive strength of Fc' 21,7 Mpa concrete. Vibrating will be performed on cylinder concrete samples with a duration time of 3 minutes and with different variations in acceleration 160 m/s2, 170 m/s2, 180 m/s2, 190 m/s2, 200 m/s2, variation velocity 140 mm/s, 150 mm/s, 160 mm/s, 170 mm/s, 180 mm/s, displacement variation 600 mm, 800 mm, 1000 mm, 1200 mm, 1500 mm. Each variation consists of 7 concrete samples. These tests were performed with methods of external vibrating by using MBT Vibrating table CO-410 in fresh concrete. Compressive strength testing is carried out at 28 days. This study shows that the optimum strong vibrating with acceleration 180 m/s2, velocity 160 mm/s, and displacement 1000 mm with the resulting compressive strength is Fc' 23.06 MPa. So that knowing the optimum vibration strength can be the basis for the implementation of vibration to get the planned concrete quality.
Effect of Variations in Water Addition On Maximum Dry Weight in Clay Soil Compaction Rina Dwi Fatika; Agata Iwan Candra; Mahardi Kamalika Khusna Ali
Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Vol 10 No 2 (2025): SEPTEMBER
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/cvl.v10i2.1397

Abstract

Soil is a crucial element in construction, serving as the foundation for structural support. Soil compaction is one of the primary methods to enhance soil stability, especially for clay soil, which expands and shrinks due to changes in moisture content. This study aims to analyze the effect of water content variation on the maximum dry unit weight in clay soil compaction. The experimental testing was conducted in the Civil Engineering Laboratory of Kadiri University using the TS-365 Automatic Standard Proctor machine. The water content variations used were 15%, 18%, 20%, 23%, and 26%. The results showed that the optimum moisture content for achieving the maximum dry unit weight was 23%, with a maximum dry unit weight of 1,743 g/cm³. Increasing water content up to the optimum point increases soil density, but excess water reduces the dry unit weight due to particle separation. This research contributes to optimizes clay soil compaction for more stable and sustainable construction. By determining the optimum moisture content, the compaction process can be conducted more efficiently, minimizing the risk of soil volume changes and improving soil-bearing capacity for long-term infrastructure development.
Jumlah Lintasan Meningkatkan Rasio MDD Pemadatan Tanah Husna, Nadiya; Candra, Agata Iwan; Ali, Mahardi Kamalika Khusna
Blend Sains Jurnal Teknik Vol. 4 No. 2 (2025): Edisi Oktober
Publisher : Ilmu Bersama Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56211/blendsains.v4i2.1035

Abstract

Rendahnya kualitas pemadatan tanah menjadi salah satu penyebab utama kerusakan dini infrastruktur jalan, terutama karena tidak tercapainya densitas kering lapangan sesuai spesifikasi. Penelitian ini bertujuan untuk mengevaluasi pengaruh jumlah lintasan pemadatan terhadap nilai rasio Maximum Dry Density (MDD) sebagai indikator keberhasilan pemadatan tanah. Pengujian dilakukan pada proyek Jalan Tol Probolinggo-Banyuwangi Paket 3 di STA 31+166, membandingkan kedua perlakuan tersebut yaitu lintasan 8 dan 10 lintasan dengan menggunakan alat berat Vibro Roller. Data ANOVA satu arah pada tingkat signifikansi < 0,05 menunjukkan bahwa jumlah lintasan pemadatan berpengaruh signifikan terhadap rasio MDD (p = 0,038). Peningkatan lintasan menghasilkan distribusi energi yang lebih merata dan mampu meningkatkan berat isi kering lapangan. Temuan ini dapat digunakan sebagai acuan evaluasi dalam pengendalian mutu berdasarkan jumlah lintasan pemadatan yang tersedia dalam laporan proyek harian, serta memperkuat pemahaman teknis tentang hubungan distribusi energi pemadatan dengan kepadatan lapangan yang optimal.