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Mechanical Performance of Recycled Plastic-Based Paving Blocks with Sand and Fly Ash Fillers Mochammad Qomaruddin; Adi Noor Fakhriyan; Yayan Adi Saputro; Yulita Arni Priastiwi; Fatchur Roehman; Nasyiin Faqih; Arif Hidayat; Akhmad Firdos Khoiril Khitam
Advance Sustainable Science Engineering and Technology Vol. 8 No. 2 (2026): February-April
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v8i2.2664

Abstract

The use of recycled plastic waste as a binder for paving blocks has been reported in a number of previous studies. However, most of these studies focus on feasibility and do not clearly explain how different plastic types behave mechanically over time. In this study, the compressive strength performance of paving blocks made from polypropylene (PP), polyethylene terephthalate (PET), and high-density polyethylene (HDPE) was experimentally compared using sand or fly ash as fillers. All mixtures were prepared with a fixed composition of 60% plastic and 40% aggregate. Compressive strength testing was carried out at 28 and 56 days using three specimens for each mix. The results show that the HDPE–sand mixture achieved the highest compressive strength at 28 days, reaching 15.7 MPa. Nevertheless, a noticeable reduction in strength was observed at 56 days, particularly in the HDPE-based mixtures. This reduction is mainly associated with polymer shrinkage and the development of interfacial stresses between the plastic binder and the aggregates. Overall, the results indicate that plastic-based paving blocks can meet the requirements of SNI 03–0691–1996 for light-duty applications, although their long-term mechanical stability remains a limitation that needs further attention.
Pembinaan Rancang Bangun Filter Air untuk Mengatasi Air Tanah Asindi Desa Tinumpuk Kecamatan Purwosari Kabupaten Bojonegoro Mushthofa Mushthofa; Alfia Nur Rahmawati; Yulia Indriani; Nasyiin Faqih
Jurnal ABDINUS : Jurnal Pengabdian Nusantara Vol 9 No 3 (2025): Volume 9 Nomor 3 Tahun 2025
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/ja.v9i3.24824

Abstract

The problem of saline and cloudy groundwater quality in Tinumpuk Village, Purwosari District, Bojonegoro Regency, has rendered the government-built clean water distribution system unusable for the community. This community service program aims to provide an appropriate technological solution in the form of training and assistance in the construction of a two-stage groundwater filtration device. The first filter consists of a 550-liter tank filled with natural materials such as palm fiber, activated carbon, silica sand, and zeolite sand. The second filter, a Fiberglass Reinforced Plastic (FRP) tube containing similar filtration media, functions to re-filter the water before distribution. The program involved village officials, youth organizations, and the general public through focus group discussions (FGDs), technical training, and live demonstrations. The results demonstrated increased community knowledge, skills, and awareness of the importance of sustainable groundwater management and water conservation. Testing of the filtration device demonstrated significant improvements in water quality, both visually and organoleptically. This program has had a positive impact on increasing access to clean water, strengthening community participation, and marking the first step toward community-based clean water independence.