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U Karst
Published by Universitas Kadiri
ISSN : 25794620     EISSN : 25810855     DOI : http://dx.doi.org/10.30737/ukarst
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
U KaRsT is a journal of the civil engineering research the University of Kadiri published twice a year in April and November. First published in April 2017. U KaRsT already has both ISSN printed and online, for ISSN (Print) is 2579-4620, and ISSN (Online) is 2581-0855.
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Articles 264 Documents
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Analisa Dampak Lalu Lintas Jalan Tambak Osowilangun Akibat Pembangunan Teluk Lamong Surabaya Endro Wibisono
U Karst Vol. 4 No. 1 (2020): APRIL
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v4i1.690

Abstract

The development of the area in the Lamong Bay Surabaya which includes: Causeway, Connecting Bridge, Interchange Area, Container Yard, Pier is being carried out by the city government, this is one of the developments of land use that will give a direct influence on the surrounding traffic. Traffic problems can assume because of the large traffic flow in the area. The purpose of this study was to determine the magnitude of trip generation/attraction due to the construction of the Teluk Lamong port on Jalan Tambak Osowilangun, Surabaya. Predicting traffic performance on several roads and intersections around the study site (Jalan Tambak Osowilangun Surabaya) in 2020 (when the Teluk Lamong Port starts operating. The method for analyzing trip generation of vehicles entering and exiting the Teluk Lamong Port uses linear regression analysis of the relationship between volumes vehicle traffic in and out of an analog building with several variables/parameters that are thought to affect trip generation at Tanjung Perak Harbor as an analog port building. 1,626. This shows a very saturated condition, while at the intersection of Father Kalisari, the DS intersection is 1.10.Pembangunan kawasan di Teluk Lamong Surabaya yang meliputi Causeway, Jembatan Penghubung, Interchange Area, Container Yard, Dermaga sedang dilakukan pemerintah kota, hal ini merupakan salah satu pengembangan tata guna lahan yang akan memberi pengaruh langsung terhadap lalu lintas disekitarnya. Permasalahan lalu lintas dapat di asumsikan karena adanya arus lalu lintas yang cukup besar di daerah tersebut. Tujuan penelitian ini adalah untuk mengetahui besarnya bangkitan/tarikan perjalanan akibat pembangunan pelabuhan Teluk Lamong di Jalan Tambak Osowilangun Surabaya. Memprediksi  kinerja lalu lintas di beberapa ruas jalan dan simpang di sekitar lokasi studi (Jalan Tambak Osowilangun Surabaya) tahun 2020 (saat Pelabuhan Teluk Lamong mulai beroperasi. Metode untuk analisis bangkitan perjalanan kendaraan yang masuk dan keluar Pelabuhan Teluk Lamong menggunakan analisis regresi linear hubungan antara volume lalu lintas kendaraan yang keluar dan masuk suatu bangunan analog dengan beberapa variabel/parameter yang diduga mempengaruhi bangkitan perjalanan di Pelabuhan Tanjung Perak sebagai bangunan pelabuhan analog kinerja persimpangan Margomulyo yang memiliki DS terbesar adalah dari arah Gresik (Romo Kalisari) menuju ke Surabaya (Kalianak), yaitu sebesar 1,626. Hal ini menunjukkan kondisi yang sangat jenuh. Sedangkan pada persimpangan Romo Kalisari, DS simpang sebesar 1,10.
PEMBUATAN BETON CAMPURAN STYROFOAM MENGGUNAKAN AGREGAT PASIR BENGAWAN SOLO Achmad Hasyim; Dwi Kartikasari
U Karst Vol. 4 No. 1 (2020): APRIL
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v4i1.697

Abstract

Concrete becomes a building material that has an important role and is in great demand. Composite materials concrete that is easily obtained is the advantages of concrete today. The specific gravity of concrete depends on the material making up of concrete. The smaller specific gravity of concrete will make the concrete have a lightweight; this will affect the dead load of the building. This research aims to find out how the process and also the effect of styrofoam mixture using Bengawan Solo River sand with the initial quality used is K-250. The research method used is the experimental method and even the study of previous research theories. Test specimens used are cylindrical, with variations in the percentage of the addition of styrofoam 0%, 1%, and 1.5%. Compressive strength testing is performed at the age of 7 days of concrete. The test results show that the addition of styrofoam in a concrete mixture affects the compressive strength of concrete, with the addition of styrofoam the percentage of 1% obtains a compressive strength of 21.899 MPa, while the addition of styrofoam percentage of 1% obtains a compressive strength of 20.453 MPaBeton menjadi material bangunan yang memeiliki peran penting dan banyak diminati. Material penyusun beton yang mudah didapatkan menjadi keunggulan beton saat ini. Berat jenis beton bergantung pada material penyusun beton. Berat jenis beton yang lebih kecil akan membuat beton memiliki bobot yang ringan, hal tersebut akan berpengaruh pada beban mati bangunan. Penelitian ini dilakukan bertujuan untuk mengetahui bagaimana proses dan pengaruh campuran styrofoam menggunakan pasir Sungai Bengawan Solo dengan mutu awal yang dgunakan yaitu K-250. Metode penelitian yang digunakan yaitu metode eksperimental dan juga kajian teori penelitian terdahulu. Benda uji yang digunakan berbentuk silinder dengan variasi prosentase penambahan styrofoam 0%, 1% dan 1.5%. Pengujian kuat tekan dilakukan saat umur beton 7 hari. Hasil pengujian menunjukkan penambahan styrofoam dalam campuran beton mempengaruhi kuat tekan beton,  dengan  penambahan  styrofoam prosentase 1% memperoleh kuat tekan sebesar 21,899 MPa, sedangkan penambahan styrofoam prosentase 1% memperoleh kuat tekan sebesar 20,453 Mpa. 
PENGARUH LIMBAH PABRIK GULA MOLASE SEBAGAI BAHAN TAMBAH (ADMIXTURE) KUAT TEKAN BETON K-175 DENGAN MENGGUNAKAN PASIR LOKAL PASIR JOMBANG Susilo Abadi Al-hasan; Sugeng Dwi Hartantyo
U Karst Vol. 4 No. 1 (2020): APRIL
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v4i1.701

Abstract

Advances in technology have had an impact on the development of construction. Concrete is one material that is widely used in construction. Improving the quality of concrete is the main topic of the researchers to obtain concrete that is suitable for their needs and economically. Molasses is a waste that can be used as concrete added material because it has content that is considered capable of improving the quality of concrete. The purpose of this study is to determine the effect of adding molasses to the compressive strength of K175 concrete using local sand with the method used is the experimental method and the study of previous research theories. Variation in the percentage of the addition of molasses used 0%, 0.4%, and 0.5% by weight of cement. The specimens used were cylindrical as many as 12 specimens. Compressive strength testing is carried out at seven days of concrete. The test results showed the highest compressive strength was obtained with a percentage increase in molasses as much as 0.4% with a compressive strength value of 18.50 Mpa and decreased compressive strength at the addition of 0.5%.Kemajuan dalam bidang teknologi berdampak pada berkembangnya pembangunan bidang konstruksi. Beton merupakan salah satu material yang banyak digunakan dalam konstruksi. Perbaikan kualitas beton menjadi topik utama para peneliti untuk mendapatkan beton yang sesuai dengan kebutuhan dan ekonomis. Molase merupakan limbah yang dapat digunakan sebagai bahan tambah beton karena memiliki kandungan yang dianggap mampu meningkatkan kualitas beton. Tujuan dari penelitian ini yaitu untuk mengetahui pengaruh penambahan limbah tetes tebu (molase) terhadap kuat tekan beton K175 menggunakan pasir lokal dengan metode yang digunakan yaitu metode eksperimental dan kajian teori penelitian terdahulu. Variasi persentase penambahan molase yang digunakan 0%, 0,4%,  dan  0,5%,  dari  berat semen.  Benda uji  yang  digunakan berbetuk silinder sebanyak 12 benda uji. Pengujian kuat tekan dilaksanakan pada umur beton 7 hari. Hasil pengujian menunjukkan kuat tekan tertinggi diperoleh dengan prosentase penambahan molase sebanyak 0.4% dengan nilai kuat tekan 18.50 Mpa dan mengalami penurunan kuat tekan pada penambahan 0.5%. 
ALTERNATIF PENGGUNAAN AGREGAT HALUS BATU KAPUR MANTUP DALAM CAMPURAN ASPAL PANAS AC-WC M.Deny Irawan Budianto; Zulkifli Lubis
U Karst Vol. 4 No. 1 (2020): APRIL
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v4i1.702

Abstract

Asphalt Concrete Wearing Course (AC-WC) is a stringent streak which located on the top and the function of it as the outside streak that the thick is 4 centimeters. AC – WC material consists of soft aggregate, crude aggregate, filter, and asphalts. The articles must be tested for identifying the feature. This research is using the Marshall Test method, VIM (%), VMA (%), VIMA (%), VFWA (%), Stabilities (kg), Flow and Marshall Quotient (%). This research was carried out at Lamongan Moslem University’s laboratory. The purpose of this research is to compare the results that have been obtained in research with the existing terms and specifications. The conclusion of this research is the addition of variation in smooth limestone blend 25%, 50%, 75% from the aggregate weight. The top-level increment of Marshall Stability’s showed 33.07% based on the compound 75%; the highest Flow is 3.57% based on the compound 50%, Void in the Mix which was included into the highest specification is 7.49% based on the compound 0%, the top-level increment Void Filled with Asphalt is 85.22% based on the compound 75%, the advance of Marshall Quotient is 29.63% based on compound 75%.Asphalt Concrete Wearing Course (AC-WC) merupakan lapisan perkerasaan yang terletak paling atas dan berfungsi sebagai lapisan aus dengan tebal biasanya 4 cm. Bahan AC –WC terdiri dari Agregat halus, Agregat kasar, bahan pengisi (filler) dan aspal. Bahan – bahan tersebut harus di uji terlebih dahulu untuk mengetahui sifat – sifatnya. Dalam penelitian ini metode yang di gunakan adalah metode marshall : VIM (%), VMA (%), VIMA (%), VFWA (%), Stabilitas (kg), Flow dan Marshall Quotien (%). adapun penelitian di laksanakan pada Laboratorium Universitas Lamongan. Kesimpulan penelitian ini adalah Penambahan variasi campuran batu kapur halus sebesar 25%, 50%, 75% dari berate agregat halus pada penelitian ini menunjukkan kenaikan nilai stabilitas Marshall (Marshall Stability) tertinggi sebesar 33,07% pada campuran75%, kelelahan plastis (Flow) tertinggi sebesar 3,57% pada campuran 50%, rongga  dalam  campuran  (Void in the Mix)   yang  masuk  dalam  spesifikasi angka tertinggi sebesar 7,49% pada campuran 0%, rongga terisi aspal  (Void Filled With Asphalt) kenaikan tertinggi sebesar 85,22% pada campuran 75%, rongga dalam agregat (Void In Mineral Aggregate) menurun sebesar 16,11% pada campuran 75%, serta Marshall Quotient meningkat sebesar 29,63% pada campuran75%.
PEMANFAATAN LIMBAH TEMPURUNG KELAPA SEBAGAI CAMPURAN PAVING BLOCK (Ditinjau dari Kuat Tekan dan Resapan Air) Ilham Adji Sucahyo; Hammam Rofiqi Agustapraja; Bobby Damara
U Karst Vol. 4 No. 1 (2020): APRIL
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v4i1.708

Abstract

The main objective of this study was to find out and analyze how much the influence of the coconut shell charcoal had on changes in compressive strength and water absorption in the K-175 paving block. This research method is experimental research, which is a research of making paving block specimens, by conducting activities or experiments using coconut shell waste as a mixture of paving blocks, with a mix design mix referring to the comparison of concrete mix with K-175 quality (SNI 03-2834-2000). The conversion value of compressive strength of specimens at the age of 7 days to 28 days from specimens N, 5%, 10%, 15% and 20% is 271,80 kg/cm², 205,12 kg/cm², 102,57 kg/cm²,76,92 kg/cm² and 64,11 kg/cm² respectively. In the normal test code, the paving block is classified as class B quality, while the 5% specimen code is classified as class B quality, for the test object code 10%, 15%, and 20% do not meet the paving block quality standards. The results of the water absorption test increased in paving blocks with a combination of coconut shell charcoal. All of them have increased water infiltration on paving blocks.Tujuan utama dari penelitian ini adalah untuk mengetahui dan menganalisa seberapa besar pengaruh arang tempurung kelapa terhadap perubahan kuat tekan dan resapan air pada paving block K-175. Metode penelitian ini adalah penelitian eksperimen, yaitu penelitian pembuatan benda uji paving block, dengan cara melakukan kegiatan atau percobaan pemanfaatan limbah tempurung kelapa sebagai campuran paving block, dengan perbandingan mix design mengacu pada perbandingan campuran beton dengan mutu K-175 (SNI 03-2834-2000). Hasil nilai konversi kuat tekan benda uji pada umur 7 hari ke umur 28 hari dari benda uji N, 5%, 10%, 15%, dan 20% adalah 271,80 kg/cm², 205,12 kg/cm², 102,57 kg/cm²,76,92 kg/cm² dan 64,11 kg/cm². Pada kode benda uji normal paving block tergolong dalam mutu kelas B, sedangkan pada kode benda uji 5% tergolong dalam mutu kelas B, untuk kode benda uji 10%, 15%, dan 20% tidak memenuhi standar mutu paving block. Hasil dari uji resapan air  paving  block  dengan  penambahan  arang  tempurung kelapa dari benda uji 5%, 10%, 15% dan 20%. Kesemuanya mengalami peningkatan resapan air pada paving block.
Measurement Of Occupational Safety And Health Risk Levels Of Kadiri University LP3M Building Sony Susanto; Hendy Hendy; Budi Winarno; Agata Iwan Candra
U Karst Vol. 4 No. 2 (2020): NOVEMBER
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v4i2.782

Abstract

Construction work for high rise buildings is a dense work activity with a high level of risk. The purpose of this research is that construction of the building takes place in the middle of lecture activities where many students, lecturers, and staff carry out activities in the campus environment, considering that construction projects are generally vulnerable to work accidents. This study investigated the identification, K3 risk assessment, and how to control OHS risks in Kadiri University LP3M building projects. The assessment method uses a matrix sourced from AS / NZS 4360: 2004. The study population numbered 58 workers ranging from workers, artisans, project guards, forepersons, executors, and office staff. The sample in this study amounted to 38 respondents. Data collected from questionnaires to respondents. The results of the study showed that immovable/ tripped objects with a risk index of 20 included a very high-risk classification, high-risk classification of 4 variables, classification at medium risk level as many as ten variables can endanger workers and jobs while classification at a low-risk level as much as two variables.
Penilaian Risiko K3 dengan Metode HIRARC Erick Triswandana
U Karst Vol. 4 No. 1 (2020): APRIL
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v4i1.788

Abstract

The Work of Building F3 in the Faculty of Medicine, Health Sciences (FKIK) Warmadewa University applied SMK3 to the construction process. Risk identification and assessment have not used the HIRARC method as a basis for mitigation. From this problem, the author considers it necessary to carry out a K3 risk assessment using the HIRARC method to know the potential hazard value of the construction work. Using descriptive quantitative research methods for the approach to risk identification using HIRARC is used to rank each risk. The results of the analysis explained the percentage of high-risk work rankings of each work item including earthworks having a rate of 20%, foundation work by 25%, structural work by 30%, roof work by 31%, finishing work by 25%, electrical work, and plumbing by 12%. While from a total of 65 risks identified, it is known that 25% risk has a high-risk rating, 43% risk has a moderate risk rating, and 32% of threats has a low-risk rating.Pekerjaan Pembangunan Gedung F3 Fakultas Kedokteran Ilmu Kesehatan (FKIK) Universitas Warmadewa menerapkan SMK3 pada proses konstruksinya. Identifikasi dan penilaian risikonya belum menggunakan metode HIRARC sebagai landasan melakukan mitigasi. Dari permasalahan itu, penulis menganggap perlu melakukan assessment risiko K3 menggunakan metode HIRARC dengan tujuan mengetahui potensi nilai bahaya pekerjaan konstruksi tersebut. Menggunakan metode penelitian deskriptif kuantitatif, dilakukan pendekatan terhadap identifikasi risiko menggunakan HIRARC untuk memperoleh peringkat setiap risikonya. Hasil analisis menerangkan besarnya persentase peringkat pekerjaan risiko tinggi dari masing masing item pekerjaan diantaranya pekerjaan tanah memiliki persentase sebesar 20%, pekerjaan pondasi sebesar 25%, pekerjaan struktur sebesar 30%, pekerjaan atap sebesar 31%, pekerjaan finishingsebesar 25%, pekerjaan elektrical dan plumbing sebesar 12%. Sedangkan dari total 65 risiko yang teridentifikasi, diketahui bahwa sebesar 25% risiko memiliki peringkat tinggi,  43% memiliki peringkat sedang, dan 32% memiliki peringkat rendah.
PERBANDINGAN DAYA DUKUNG TIANG PANCANG BERDASARKAN PENGUJIAN CONE PENETRATION TEST (CPT) DAN STANDARD PENETRATION TEST (SPT) PADA TANAH BERPASIR I Wayan Ariyana Basoka
U Karst Vol. 4 No. 1 (2020): APRIL
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v4i1.793

Abstract

Design of building structure always related to the foundation, field testing is often done to test the bearing capacity of the soil in the form of a cone penetration test (CPT) and a standard penetration test (SPT). From the two field tests that are often done, it is necessary to research the amount of bearing capacity obtained through CPT and SPT data. This study uses a bearing capacity analysis of the pile foundation using CPT and SPT data in Pesanggaran, Bali, Indonesia. The analysis was carried out by comparing the bearing capacity of pile foundations using pile foundations with dimensions of 15 cm, 20 cm, 25 cm and 30 cm at a level of 10 meters. The results of the bearing capacity percentage are then compared. From the analysis conducted, the bearing capacity of pile foundations using CPT data has a higher value than the carrying capacity of poles using SPT data with a bearing capacity difference of 10,4-16,3%.Perancangan suatu struktur erat kaitannya dengan fondasi, pengujian lapangan yang sering dilakukan untuk mengetahui daya dukung fondasi berupa cone penetration test (CPT) dan standard penetration test (SPT). Dari dua pengujian lapangan yang sering dilakukan, maka perlu dilakukan dilakukan penelitian mengenai seberapa besar perbedaan hasil daya dukung yang diperoleh melalui data CPT dan SPT. Penelitian ini melakukan perbandingan analisis daya dukung fondasi tiang dengan menggunakan data CPT dan SPT di Pesanggaran, Bali, Indonesia. Analisis dilakukan dengan membandingkan daya dukung fondasi tiang menggunakan fondasi tiang berdimensi 15 cm, 20 cm, 25 cm, dan 30 cm pada kedalaman 10 meter. Hasil persentase daya dukung yang diperoleh kemudian dibandingkan. Dari analisis yang dilakukan, diperoleh daya dukung fondasi tiang menggunakan data CPT memiliki nilai lebih tinggi daripada daya dukung tiang menggunakan data SPT dengan perbedaan daya dukung 10,4-16,3%.
EXPERIMENTAL STUDY OF LOCAL SOLID WOOD POST-FIRE BEHAVIOUR Ni Nyoman Kencanawati; B Anshari; J Fajrin; Hariyadi Hariyadi; A Beriman
U Karst Vol. 4 No. 2 (2020): NOVEMBER
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v4i2.909

Abstract

When wood structures are exposed to high temperatures, they will decompose to provide a char layer and pyrolysis zone, an insulating material that inhibits further degradation. This experimental study aims to determine the char thickness and pyrolysis of solid wood exposed to fire for 30, 45, and 60 minutes. The post-fire shear strength has also been evaluated. The solid woods were locally from Nusa Tenggara Island, namely Jati Putih, Bajur, and Rajumas. According to the Indonesian National Standard of the heating curve for structures, the temperature growth was SNI-1741: 2008. Obtained The char layer's highest average thickness was within 60 minutes of combustion with the highest temperature of 1055oC. The char layer for Jati Putih, Bajur, and Rajumas are 2.12 mm, 7.89 mm, and 6.53 mm. Meanwhile, the pyrolysis layers are 8.78 mm, 9.13 mm, and 14.82 mm, respectively, for Jati Putih, Bajur, and Rajumas. Besides, the post-fire shear strength of all wood species shows an increase in shear strength in the core. Wood can still sustain the load during a fire because there is a char layer preventing the core section from immediately exposed to the fire.    
Investigation of Pile Behavior Toward Abutment Construction using PLAXIS 3D: Case Study on Lembak Bridge Clinton Girsang; Paulus Pramono Rahardjo; Aswin Lim
U Karst Vol. 5 No. 1 (2021): APRIL
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v5i1.1012

Abstract

Soil  as  a  subgrade  foundation  under  embankment  construction often  creates  problems  in  terms  of  stability  and  settlement. Therefore, it needs improvement by using preloading embankment. This article presents the investigation of pile behavior towards two scenarios  of  abutment  construction  using  Plaxis  3D,  a  three- dimensional  finite  element  program.  The  use  of  two  scenarios  of analysis was Method A. The abutment construction phase conduct without using a preloading embankment, and Method B, where a preloading  embankment  constructs  before  the  abutment construction.  The  case  study  location  at  the  Lembak  bridge. Compare  the  analysis  results  with  the  measured  data.  Results showed that Method A and Method B's pile deflection yielded four times  and  one  point  six  times  larger  than  the  measure  data, respectively.  Hence,  it  indicates  that  Method  B  recommends  for future construction of bridge abutment.

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