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All Journal RUANG: JURNAL LINGKUNGAN BINAAN (SPACE: JOURNAL OF THE BUILT ENVIRONMENT) TATAL Jurnal Teknik Sipil Giratory Upgris Teknika DEARSIP: Journal of Architecture and Civil Journal of Research and Technology Studies International Journal of Sustainable Building, Infrastructure and Environment Public Service And Governance Journal
Mohammad Debby Rizani
Universitas PGRI Semarang
Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Social Sciences Transportation

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ANALISIS PENGARUH TAMBAHAN KAPUR DAN SEMEN TERHADAP PEMADATAN DAN KUAT TEKAN TANAH SIGAR BENCAH Zakariya, Rif’an; Fadillah, M. Sadam; Budirahardjo, Slamet; Rizani, Mohammad Debby
Jurnal Teknik Sipil Giratory UPGRIS Vol 6, No 1: Juni 2025
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/giratory.v6i1.24100

Abstract

The soil condition in Sigar Bencah, Semarang City, has characteristics that are less supportive of construction, such as cracks, low bearing capacity, and instability. This study aims to evaluate the effects of soil stabilization using lime and cement on soil compaction and unconfined compressive strength (UCS). The variations of lime and cement content used are 0%, 5%, 10%, and 15%, with lime and cement ratios of 30:70, 50:50, and 70:30. The tests conducted include physical property analysis, standard compaction, and UCS testing. The results of the study show a significant improvement in both UCS and optimal soil compaction after stabilization treatment. The optimal additive combination for improving soil quality was found at a 10% additive content with a 50:50 lime-to-cement ratio, which produced a UCS value of 14.2 kg/cm². This indicates that the use of lime and cement as stabilization materials can enhance soil strength and stability, making it suitable for use in construction in areas with poor soil conditions. This stabilization can also serve as a solution to increase soil bearing capacity, reduce potential damage, and improve soil performance in various construction applications.
PLANNING OF WASTEWATER TREATMENT PLANTS IN THE TAPIOCA FLOUR INDUSTRY USING ANAEROBIC FILTER UPFLOW SYSTEM (UAF) (Case Study of Mojoagung Village, Trangkil District, Pati Regency) Mohammad Debby Rizani; Farida Yudaningrum; Kukuh Wisnuaji Widiatmoko; Fiki Nur Fitriani; Eka Silvi Nur Fianty; Intan Mayasari
DEARSIP : Journal of Architecture and Civil Vol. 6 No. 01 (2026): Desember 2025 - Mei 2026
Publisher : Faculty of Engineering, Universitas Islam Darul Ulum Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52166/dearsip.v6i01.13006

Abstract

Mojoagung Village, Trangkil District, Pati Regency, is one of the major tapioca flour production areas in Central Java, Indonesia. The wastewater generated from tapioca processing is commonly discharged directly into nearby rivers without adequate treatment, causing unpleasant odors, low pH levels, and environmental pollution that may disturb the aquatic ecosystem. This study aimed to design a Wastewater Treatment Plant (WWTP) for the tapioca flour industry using an Upflow Anaerobic Filter (UAF) system combined with biofilter media consisting of bioballs, honeycomb media, and pumice stone. The research employed a quantitative analytical method based on wastewater quality testing and hydraulic design calculations. The parameters analyzed included Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Suspended Solids (TSS), cyanide (CN), and pH. The laboratory results indicated that the BOD, COD, and TSS concentrations met the wastewater quality standards, while the CN and pH parameters did not comply with the applicable standards due to acidic conditions and noticeable discoloration. Based on the design calculations, the proposed WWTP requires a land area of 29.28 m³ with dimensions of 18.3 m in length, 1.6 m in width, and 2.5 m in depth. The estimated construction cost of the WWTP was Rp 69,959,471.109. The proposed UAF-based treatment system is expected to reduce environmental pollution and improve the management of wastewater generated from tapioca flour production.
COMPARATIVE ANALYSIS OF THE QUALITY AND COST OF ROAD PATCHING USING COLD PAVING HOT MIX ASBUTON (CPHMA) WITH PENETRATION LAYER USING PERTAMINA'S EX ASPHALT Slamet Budirahardjo; Mohammad Debby Rizani; Galih Widyarini; Muhammad Zidan Fathur Rohman; Aminarti Laela; Mimin Aminah Yusuf
DEARSIP : Journal of Architecture and Civil Vol. 6 No. 01 (2026): Desember 2025 - Mei 2026
Publisher : Faculty of Engineering, Universitas Islam Darul Ulum Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52166/dearsip.v6i01.13008

Abstract

Road damage in the form of holes in flexible pavement can reduce the level of road service and endanger road users. Handling road damage requires effective maintenance methods, good pavement quality, and efficient implementation costs. This study aims to compare the quality and cost of road paving work using the Cold Paving Hot Mix Asbuton (CPHMA) method and the Macadam Penetration Layer (Lapen) method on the Bandar-Tulis Road Section, Batang Regency. The research method used is a quantitative method with data collection through field observation, laboratory testing using the Marshall method, and cost analysis based on Work Unit Price Analysis (AHSP). The quality parameters analyzed included Marshall stability values, flow values, and Marshall Quotient (MQ), while cost aspects were analyzed based on the need for labor, materials, and equipment for every 1 m³ of work. The results of the study showed that the CPHMA method had better pavement quality than the Macadam Penetration Layer method. The Marshall Quotient (MQ) value in the CPHMA method ranges from 63,114–126,562 kg/mm, which indicates the blend's ability to resist deformation and traffic loads better. In terms of implementation, the CPHMA method is more practical and efficient because it uses ready-to-use mixtures so that the work time is faster and the use of equipment is less. Based on the cost analysis, the unit price of the CPHMA method is IDR 6,616,846.56/m³, while the Macadam Penetration Layer method is IDR 2,903,370.78/m³. The cost difference between the two methods is Rp3,713,475.78/m³ or around 56.12%, so that the Macadam Penetration Layer method is more economical than the CPHMA method. Thus, the CPHMA method is superior in terms of quality and efficiency of work implementation, while the Macadam Penetration Layer method is superior in terms of cost. The selection of road patching methods needs to consider the condition of road damage, the need for traffic services, and the availability of the road maintenance budget.
Co-Authors Ainun Nahar, Mukhamad Ilham Aminarti Laela Ananda, Fina Kurnia ANDRI KURNIAWAN Anggi Permata , Putri Anggraeni, Yossi Dewi Anggraini, Yossi Dewi Ariawan, Donny Arieska Avianda Rachmayanie Assehab, Muhammad Ali Bagas Wahyu Adhi, Bagas Wahyu Eka Silvi Nur Fianty Esterida, Berliana Fadillah, M. Sadam Farida Yudaningrum Fiki Nur Fitriani Fikri, Fajar Ikhsanul Galih Widyarini Hermawan, Matholiul Fatani Hizballah, M Firoos Ibnu Toto Husodo, Ibnu Toto Ikhwanudin Ikhwanudin Ikhwanudin Ikhwanudin Imawan, Heggy Indra Permana Indra Permana Intan Mayasari JAMANTO, YOGA LESTIYANTO Jaryati Joko Supriyanto Kukuh Wisnuaji Widiatmoko Leksana, Rudi Lestiyanto, Yoga M Chamim Nufis M Ridwan Masykuroh, Ifana Mimin Aminah Yusuf Mohammad Ridwan Muhammad Zidan Fathur Rohman Navis, Ahmad Akbar Nur Aksin, Nur Nurchamin, Nafiz Octaviana, Luthfia Dea Paripurna, Drian Pinuji, Putri Praptiningrum, Retno Dwi Putri Anggi Permata Suwandi, Putri Anggi Rahmasari, Maria Asysyifa Setiyanto, Beni Slamet Budirahardjo Slamet Budirahardjo Suwandi, Putri Anggi Permata Suzanna Ratih Sari Tantin Pristyawati Teguh Imam Rahayu Teguh Imam Rahayu Teguh Imam Rahayu Teguh Imam Rahayu Yaqin, Wafi Ainul Yudaningrum, Farida Zakariya, Rif’an