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All Journal Media Teknik Sipil Jurnal Sains dan Teknologi Jurnal Teknik Sipil Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Teknik Journal of the Civil Engineering Forum FROPIL (Forum Profesional Teknik Sipil) Jurnal Sinergitas PkM & CSR Riau Journal of Empowerment Jurnal Rekayasa Sipil Jurnal Serambi Engineering Prokons: Jurnal Teknik Sipil APTEK Journal of Applied Materials and Technology Journal of the Civil Engineering Forum SAINSTEK Journal of Infrastructure and Construction Technology
Gunawan Wibisono
Universitas Riau
Agriculture, Biological Sciences & Forestry Arts Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation

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Journal : journal of the civil engineering forum

 1 
The Effects of Using Ground Cockle Seashells as an Additive for Mortar in Peat Environment Monita Olivia; Ismi Siska Rahmayani; Gunawan Wibisono; Edy Saputra
Journal of the Civil Engineering Forum Vol. 6 No. 3 (September 2020)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.55651

Abstract

Seashells are available abundantly in coastal areas and have the potential to be used as aggregates and replacement for cement in mortar and concrete. They are also applied as mineral additives for mortar or concrete to increase the resistance of these materials in an aggressive environment, especially in constructing structures such as drainage and sewer networks which require good resistance to organic acid attack. This paper discusses the potential addition of ground seashells to improve the performance of mortar used as a drainage lining in an acidic environment such as peatland. The mix was designed using a 4% ground cockle shell (Anadara granosa) by cement weight as an additive in two mixes which include Ordinary Portland Cement (OPC) and OPC Cockle Shell (OPCCS). The samples were cured in a water pond for 28 days before they were placed in water and peat water for 120 days after which the compressive strength, porosity, sorptivity, change in weight, and visual characteristics were investigated. The results showed the compressive strength of OPCCS mortar increased by 11.29% after immersion in peat water for 120 days with its porosity and sorptivity decreased by 5.78% and 31.07% due to the refinement of the pores and capillary network in the mortar. Moreover, the weight of the brushed and unbrushed OPCCS mortar in peat water was lesser compared to the OPC due to the increase in CaO content which has the ability to fill the pores and reduce disintegration. The visual examination showed an improvement in the pH of OPCCS mortar due to the ability of the ground cockle shells to neutralize the acidity of the peat water. This study, therefore, shows the use of ground cockle shells as an additive makes it possible to use mortar as a drainage lining because the shells provide excellent resistance to acidic peat environments.
The Influence of High Plasticity and Expansive Clay Stabilization with Limestone on Unconfined Compression Strength Soewignjo Agus Nugroho; Gunawan Wibisono; Andarsin Ongko; Avrilly Zesthree Mauliza
Journal of the Civil Engineering Forum Vol. 7 No. 2 (May 2021)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.59438

Abstract

Clay is a cohesive material that becomes very soft when high content of water is added. This condition makes construction activities difficult on this type of soil. There is, therefore, a need for stabilization when dealing with high plasticity clay through several methods such as the application of limestone. However, this method mostly does not meet the standards due to the reaction between limestone and groundwater which normally alters soil properties, thereby, leading to a reduction in stickiness and softness of the soil. Meanwhile, limestone generally has the ability to compact and stabilize the soil due to its fine powder which consists of metals and non-organic mineral compositions. Therefore, this study was conducted to identify the influence of using limestone additives for stabilization at different mixture compositions on clay. The properties of the soil were tested before the Unconfined Compression Strength Test and the results showed limestone was effective in stabilizing high plasticity and expansive clay. This was proven by the 10% increase in the Unconfined Compression with lime content in curing conditions for 28 days as well as the 319% magnitude of the non-soaked, 6% reduction in the liquid limit value, and 46% increment in the plastic limit value.
Co-Authors Abdurrahman, Habib Abrar Rifqi Pratama Afdal Afdal Agus Ika Putra Agus Nugroho, Soewignjo Ahmad Fajriman Aidi Yani Fitri Ainiyyah Fadhilah Alfian Kamaldi Alfian Malik Alfikri, Nur Ali Imron Rusadi Andarsin Ongko Ardian Yolanda Arief Rahman Arief Rijaldo Fajri Arif Rahman Avrilly Zesthree Mauliza Ayu Nofikasari Dhea Fitra Yofani Dinni Yunike Jasril Edy Saputra Eko Soebowo Erwin Erwin Fachrul Willian Fahri Hafisuddin Fahrurrozi Fandy Agisman Febri Paramitha Ramadhani Ferisma Ratu Giri Ferry Fatnanta Frans Rezal Habib Abdurrahman Hasibuan, Putra S Hengki Tornando Horas Saut Maringan Marpaung Ihsanul Muslim Irvan Arisma Iskandar Romey Sitompul Ismeddyanto, Ismeddiyanto Ismi Siska Rahmayani Kairon Wika Rejeki Sembiring Kamaldi, Alfian Khairil Badry Khairul Umam Leo Sentosa M. Shoffar Al Hafizh Mia Qoryati Milka Novita Manalu Mohd. Rizki Novianto Monita Olivia Monita Olivia Muhamad Yusa Muhammad Alfaridzi Adfan Muhammad Ikhsan Muhammad Riyan Sabri Muhammad Rizky Muhammad Shalahuddin Muhammad Yusa Muhardi Niko Rizaldi Nur Alfikri Nurwijayanti Ori Patinsyah Qoryati, Mia Rahmi Afifi Rahmi Afifi Ramadhan Yanuari Rezha Yaren Ria Larici Rijaldo, Arief Rinaldi Rinaldi Rizqy Ridho Prakasa Rudy Satriya Pratama Satibi, Syawal Shakila Fuadah Lubis Soewignjo Agus Nugroho Sri Djuniati Suci Cahya Ferdilla Surgaroni uga Trivia Ariska Wicaksono Mahestra Noegroho Zakiyul Fuadi