Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/222206
Title: REUSING RECYCLED PLASTIC AS CONCRETE CONSTITUENTS FOR BIAXIAL HOLLOW SLAB
Authors: KAM HUEI WOON
Keywords: Building
Project and Facilities Management
Kua Harn Wei
2010/2011 PFM
Concrete slab
Recycled plastic
Issue Date: 19-May-2011
Citation: KAM HUEI WOON (2011-05-19). REUSING RECYCLED PLASTIC AS CONCRETE CONSTITUENTS FOR BIAXIAL HOLLOW SLAB. ScholarBank@NUS Repository.
Abstract: Concrete is one of the most important building materials in the world but as the construction industry moves toward sustainable construction, there is a need to reduce concrete usage. This is especially critical in Singapore when there are no natural resources such as sand and aggregates available locally. Furthermore, concrete production creates problems like high carbon emission and is also heavily energy consuming. Apart from concrete, another building material causing problems is plastic, which are not easily recycled. Being mostly non-biodegradable, they have always been the subject of debate for environmentalists. The aim in this dissertation is to counter the 2 building materials problem together by introducing a Poly* Flat Slab system, which combines the 2 building materials into a single concrete slab system. The concept is developed based on the current biaxial hollow slabs system in the market but with some improvisations. This study will look at the feasibility of the Poly* Flat Slab system becoming a replacement for normal concrete slab in terms of its compressive strength, flexural strength and material savings. In the current biaxial hollow slabs system, custom made plastic balls known void formers were placed within the concrete slab during casting hence, creating voids and reducing concrete usages. However, such moves have led to increase energy consumption and carbon emission during the production process of those custom made void formers. This study aims at looking into the possibilities of using ready-made recycled plastic bottles of PET and HDPE materials to act as the void formers. The tests conducted in this study show that the concrete beam with bottles can achieve similar flexural strength as normal solid concrete. The lack of resources have limited and prevented some other tests from being conducted in this study. Nevertheless, the success of this study will lead to a new technology that not only helps to reduce concrete usage in the construction industry, which means savings in raw resources such as sand and aggregates, it will also help to recycle and reuse plastic materials. Most importantly, it will reduce the carbon footprint and energy consumption in construction processes and eventually contribute to sustainable development.
URI: https://scholarbank.nus.edu.sg/handle/10635/222206
Appears in Collections:Bachelor's Theses

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