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All Journal JPM17: Jurnal Pengabdian Masyarakat RACIC : Rab Construction Research Jurnal Penelitian KURVATEK
Herry Widhiarto
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Aerospace Engineering Arts Humanities Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Social Sciences Transportation

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STABILISASI TANAH LEMPUNG EKSPANSIF DENGAN MENGGUNAKAN CAMPURAN ABU-SEKAM DAN KAPUR Herry Widhiarto; Aris Heri Andriawan; Andik Matulessy
JPM17: Jurnal Pengabdian Masyarakat Vol 1 No 02 (2015)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/jpm17.v1i02.538

Abstract

Soil as the foundation of a building must have a carrying capacity that is capable of supporting the load of the building on it. For this type of soil of clay that has a large shrinkage and development properties (expansive clays) as a result of which contained mineral montmorillonite minerals form very easily affected by changes in water content so easily expands further damaging buildings on it. To reduce the fluffy nature of clay is necessary to repair / stabilization by adding mix-husk ash and lime. In this study, carried out by the addition of a mix-husk ash and lime with variations in the percentage of 0%, 4%, 6% and 8%. The results show the value of plasticity index, IP, decreased by 59.35% on a mix-husk ash and lime at 6%, the greater the percentage of mix-husk ash and lime, dry density value,  increasing dry unit weight, decreasing swelling occurs quite 4% greater in percentage mix-husk ash and lime, the CBR value increased with the increasing percentage-husk ash and lime.Keywords: expansive clay, montmorillonite minerals, plasticity index, swelling, dry density, CBR.
ANALISIS PENGARUH PENAMBAHAN BAHAN STABILISATOR ABU JERAMI TERHADAP KEPADATAN TANAH LEMPUNG EKSPANSIF KABUPATEN PAMEKASAN laily endah fatmawati; Herry Widhiarto; Heri Santoso
KURVATEK Vol 5 No 1 (2020): April 2020
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v5i1.1568

Abstract

Expansive clay is a soil that has a low carrying capacity and high shrinkage growth. Tthe soil has certain limited physical and mechanical properties. Therefore a stabilization is needed so that the parametric soils values ​​become better so that they can be used as subgrade in a construction. Tests carried out include, specific gravity testing, liquid limits, plastic limits, and compaction testing with proctor test and CBR test. The soil was used in this study was taken from the area Bujur Timur, Pamekasan. The soil included the CH group with a plasticity index of 43.5%. The percentage of addition of rice straw is 0%, 2%, 4%, 6%, 8%, 10% of the dry weight of the soil. The most optimum of proctor test results are the addition of rice straw ash by 5.8% with 0MC (Optimum Moisture Content) value of 15,20 % and dry content weight 1.72 gr/cm3. The optimum test results with 7.8% rice straw ash with a CBR value of 5.4% so that can be used for alternative soil improvement. Keywords: expansive clay, rice straw ash, soil stabilization, pamekasan
Perbaikan ALTERNATIF LONGSORAN DENGAN METODE PRELOADING DI JALAN LINGKAR TUBAN Reva Ayundasari Ayundasari; Laily Endah Fatmawati; Nurani Hartatik; Herry Widhiarto; Yudi D. Prasetyo; Siska Yovina Ervitasari
Racic : Rab Construction Research Vol 7 No 1 (2022): RACIC (RAB CONSTRUCTION RESEARCH)
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v7i1.2514

Abstract

Bentuk konstruksi badan jalan terdiri dari beberapa lapis perkerasan yang tiap lapisnya memiliki jenis dan ketebalan tertentu, yaitu lapisan tanah dasar (sub grade), lapis pondasi bawah (sub base), lapis pondasi atas (base) dan lapis permukaan (surface). Penelitian ini menggunakan metode Preloading, sehingga diharapkan dapat mengatasi permasalahan penurunan tanah di lapangan. Adapun data yang digunakan adalah data sekunder yakni data bor log test, klasifikasi kondisi setiap lapisan tanah, tes pemadatan tanah. Berdasarkan analisa data yang dilakukan, diperoleh kesimpulan bahwa tinggi timbunan pada saat menggunakan preloading dan tanpa menggunakan preloading adalah sama yaitu sebesar 1,50 m.
ANALYSIS OF ROAD CONDITION VALUE ON THE NATIONAL ROAD TEUKU UMAR TUBAN USING BINA MARGA METHOD Richo Ardidarmawan Mintiya; Herry Widhiarto; Aditya Rizkiardi
Jurnal Penelitian 191-198
Publisher : Politeknik Penerbangan Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46491/jp.v7i3.925

Abstract

Roads are the most important aspects of distribution, social, and economic fields, but over time and changing weather is often the cause of road damage. Therefore, it is necessary to have a review carried out to be able to determine the type of damage and the degree of damage that occurs. Observations will be made on the Teuku Umar Tuban Road Section by referring to the Bina Marga Method. Observations will be carried out visually and only analyzed only on the surface, in addition to calculating the daily vehicle volume. From the observation process, types of damage were obtained, namely patholes, cracking, patchng, depression and rutting. Based on the type of damage, repairs will be carried out on the most numerous and fundamental type of damage is to use the crack fill method, this is done because this road has a crack of 55%.
PERENCANAAN ULANG PERKUATAN STRUKTUR DERMAGA MENGGUNAKAN PONDASI TIANG PANCANG DENGAN VARIASI DIAMETER Clarissa Rahma Anisadila; Herry Widhiarto; Laily Endah Fatmawati
Racic : Rab Construction Research Vol 8 No 1 (2023): JUNI
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v8i1.3099

Abstract

The wharf is one of the supporting facilities for the process of loading and unloading goods on ships. For services for long-term ships and loads caused by the process of loading and unloading ships, the safety of the wharf needs to be improved by strengthening the foundation. Berlian Pier uses a steel pile foundation with a diameter of 1.016 m and a length of 32 m. This study used the Meyerhoff method to calculate the bearing capacity of the piles and N-SPT data for the Reinforcement of Wharf Structures Using Diameter Variations at Berlian Surabaya Pier. Based on the re-planning that has been done, it is concluded that a diameter of 1.00 m and a length of 32 m obtains a single pile bearing capacity of 8164 Tons, shear resistance of 28120.4 Tons, axial bearing capacity of 8345.42 Tons. Immediate settlement of 38.551 mm, annual settlement of 00,0201 mm, long-term settlement of 0,193 mm, and total settlement of 48,050 mm. Keywords: Variation Diameter, Carrying Capacity, Settlement
ANALISIS PERBAIKAN TANAH DASAR MENGGUNAKAN METODE GEOTEKSTIL Saiful Anam; Laily Endah Fatmawati; Herry Widhiarto
Racic : Rab Construction Research Vol 8 No 1 (2023): JUNI
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v8i1.3103

Abstract

Soil acts as a building material in various types of civil engineering work, on the other hand land plays a role as a support for building foundations such as embankments, highways and railroads. Soil improvement is a type of soil stability that is useful as soil improvement and performance required by technical requirements. In an effort to increase the carrying capacity of the soil, several methods can be used, such as: soil improvement using Replecement Soil, PVD Method, Preloading, Micropile, Geotextiles, etc. In this study, the geotextile method was used as an alternative reinforcement to find a larger and better safety number (SF) for soil conditions adjacent to (Groundwater Table), and can be the most effective alternative soil improvement method. Based on the analysis of the data, it was concluded that the total load (q) is 31 layers of non-woven which is 2 layers, with a length of geotextile (L) of 1.825 m. The safety factor geotextile method non-woven = 2.4.
Co-Authors Aditya Rizkiardi Andik Matulessy Aris Heri Andriawan Clarissa Rahma Anisadila Heri Santoso laily endah fatmawati Nurani Hartatik Reva Ayundasari Ayundasari Richo Ardidarmawan Mintiya Saiful Anam Siska Yovina Ervitasari Yudi D. Prasetyo