Experimental Study of Hollow-core Slab Containing Waste PET Bottles

Abstract

This study investigated the utilization of plastic-waste concrete as an effort to reduce urban waste problems. The waste plastic bottles were utilized to form the hollows of the hollow-core slabs (HCSs). The bottles were made of polyethylene terephthalate (PET). As a part of green research to reuse waste material, shredded PET was also added to the concrete mixture to improve the HCS strength. The cast-in-site HCS could be constructed without any difficulties. Three parameters were investigated: the effects of void content, shredded PET content, and steel-fiber (SF) content on the HCS ultimate bending capacity (Mu). Fifteen specimens were tested under static loads until failure, and the results were compared with those of the solid slab. Two different void contents 19% and 24% were studied. The other parameters were the shredded PET content (0.5% and 0.7%) and the SF content (0.19% and 0.32%). The Mu values of the HCS specimens were 12% to 16% less than that of the solid slab. However, the strengths were still within the theoretical capacity of the slab. The addition of the shredded PET could improve the HCS bending capacity by 18% to 38% compared with that of the solid slab. Similar results were also found for the specimens with SFs, whose Mu values were 11% to 46% greater than that of the solid slab. AbstrakKajian Eksperimen Lempengan Inti Berongga yang Berisi Botol-botol PET Limbah. Kajian ini menginvestigasi pemanfaatan beton limbah plastik sebagai suatu upaya untuk mengurangi masalah limbah perkotaan. Botol-botol plastik limbah dimanfaatkan untuk membentuk rongga-rongga dari lempengan inti berongga (the hollow-core slabs (HCS)). Botol-botol tersebut dibuat dari polietilena tereftalat (PET). Sebagai suatu bagian dari riset awal (green research) untuk menggunakan ulang bahan limbah, PET yang sudah dicacah juga ditambahkan ke campuran beton untuk meningkatkan kekuatan HCS. HCS yang dicor di tempat dapat dikonstruksi tanpa ada kesulitas apapun. Tiga parameter diinvestigasi: efek-efek dari konten kosong, konten PET cacahan, dan konten serat baja (steel-fiber (SF)) pada kapasitas pembengkokan akhir HCS (Mu). Lima belas spesimen diuji dengan beban statis sampai kegagalan, dan hasil-hasilnya dibandingkan dengan hasil uji lempengan padat. Dua konten kosong yang berbeda 19% dan 24% dikaji. Parameter-parameter lainnya adalah konten PET cacahan (0,5% dan 0,7%) serta konten SF (0,19% dan 0,32%). Nilai-nilai Mu spesimen-spesimen HCS adalah 12% sampai 16% lebih kecil dibandingkan dengan nilai-nilai MU lempengan padat. Namun demikian, kekuatannya masih berada di dalam kapasitas teoritis lempengan. Penambahan PET cacahan dapat meningkatkan kapasitas pembengkokan HCS sebesar 18% sampai 38% dibandingkan dengan kapasitas pembengkokan lempengan padat. Hasilhasil serupa juga diperoleh untuk spesimen-spesimen dengan SFs, dengan nilai-nilai Mu sebesar 11% sampai 46% lebih besar dibandingkan dengan nilai-nilai MU lempengan padat.

Implications of Palm Kernel Shell-Filled Plastic Bottles on the Structural Behavior of Concrete Slab

“…It can therefore be said that the incorporation of plastic bottles filled with PKS performed better in terms of flexural strength than conventional sod slabs of the same concrete properties. Previous research on bubble deck slabs has found that the plastic formers reduce the strength of the slabs [53,55]. Furthermore, the increased flexural strength of the PKSfilled bottle slabs could be attributed to the PKS filling the voids created by the plastic bottles in the slab, thereby assisting in the load carrying capacities of the slabs.…”

“…The flexural test report indicates that the load carrying capacity, flexural strength, and deflection of the bubble deck slab reinforced with FRP were 18% greater than those of the conventional slab. Orientilize et al (2021) [55] studied experimentally a Hollow-core slab (HCS) containing waste PET bottles as an effort to reduce urban waste problems. The specimen had a length, width, and thickness of 1750 mm, 600 mm, and 150 mm, respectively.…”

Flexural Ductility, Stiffness, and Toughness of New Voided Reinforced Concrete One-Way Slab Using Waste Plastic Bottles

“…Furthermore, voids can be used as a service path for mechanical and electrical work. Di erent con gurations have been formulated to produce voids inside the concrete structural elements such as bubbles [5][6][7][8][9][10][11][12] and pipes [13][14][15]. However, these methods of voids are almost expensive and required complicated formwork to install.…”

“…For one-way slab, very little research had been conducted on plastic waste plastic bottles to form voids. Orientilize et al [11] investigated the effects of using waste plastic bottles as voids to form a hollow core one-way slab on the flexural behavior. ree parametric studies were conducted: the content of voids, chopped PET, and steel fiber content.…”