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Glass is produced by melting sand in presence of soda ash (anhydrous sodium carbonate) with a chemical composition similar to natural sand. As a result, glass aggregate has a high SiO 2 content usually at around 70%. A range of glass chemical composition in literature is summarized in Table 9.2.It is to be noted that the chemical …
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Presently, different types of waste materials and industrial byproducts such as recycled concrete aggregate, glass, ceramic, fly ash, slag, etc., are being used with and without natural aggregates ...
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Before using glass in concrete, recyclers typically sort the glass aggregates by color. Among the conventional SCMs, silica fume and metakaolin are the most effective ones. Previous studies showed that using approximately 10% of either silica fume or metakaolin can mitigate the ASR distress in concrete containing glass aggregates by almost ...
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The American Society of Concrete Contractors and Concrete Polishing Council identified the need for a "best practices standard" for the surface broadcast of glass aggregate on concrete flatwork. A ...
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Ordinary or plain concrete — one of the most commonly used. Made of cement, sand and coarse aggregates. Lightweight concrete — density lower than 1920 kg/m³. It has very low thermal conductivity. High-density concrete — also called heavy weight. The density varies between 3000-4000 kg/m³.
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This systematic literature review (SLR) aims to present and analyze the recent research on the effect of recycled glass (RG) on the durability of concrete applications in terms of transport properties, chemical attack, alkali-silica reaction (ASR), and freeze/thaw (FT). RG could be utilized in concrete as a replacement or addition in …
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Due to the high air content in glass aggregates, concrete with a bulk density of around 800 kg/m 3 and a relatively high compressive strength of approximately 10 MPa can be obtained [6,11].The thermal conductivity of ultra-lightweight concretes ranges from 0.16 W/(m·K) to 0.20 W/(m·K). These properties can also make these concretes a good ...
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In this study, the effect of micro-carbon fiber on the properties of concrete incorporating recycled coarse aggregate at three different levels, i.e., 0%, 50%, and by volume replacement of natural …
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Singapore: 72,800: 29 [60] Jordan: 35: 0: Table 3. Summary of the physical properties of natural and waste glass aggregate [91]. Physical properties ... C. Meyer, N. Egosi, C. Andela, Concrete with waste glass as aggregate, in Proceedings of the International Symposium Concrete Technology Unit of ASCE and University of Dundee, …
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Cement, as the most important binding agency in concrete, is the source of about 8% of the world's carbon dioxide emission. Previous studies have demonstrated the viability of using waste glass to replace cement to make concrete more sustainable and higher performance. In Singapore, 75, 000 tonnes of glass were generated in the year of 2019.
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Once the concrete cured, it was similar in mechanical strength to traditional sand-containing concrete, meeting industry standards. Extrudability depended on the glass aggregates/binder ratio, nanoclay content, and fineness modulus. The extrudable limit values for these three properties were determined at 0.9, 0.2%, and 2.4, respectively.
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Properties of self-compacting concrete prepared with recycled glass aggregate. Cement and Concrete Composites, 31(2), 107 – 113. DOI 10.1016/j.cemconcomp.2008.12.002.
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The completion of SS EN 12620: Specification for Aggregates for Concrete, has paved the way for the use of alternative substitutes to natural aggregates, and it is timely for …
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The environment receives millions of tons of garbage, including plastic and glass, and concrete building debris contributes to a number of environmental problems. In order to reduce cement and make use of waste materials like glass and plastic, this research creates compacted concrete samples using waste glass powder, waste plastic …
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The 3D printed bench. Photo via NTU Singapore. Why does concrete need aggregates? Concrete is a mixture of portland cement, water, and aggregates such as sand, gravel, …
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With industry progress and living standards, an increasing quantity of waste glass (WG) is being produced. WG causes extreme environmental difficulties owing to the WG Rivers' inconsistency. This study aimed to analyze the impact usage of waste glass powder (WGP) as a cement substitute and its mixing method on concrete …
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The effects of recycled glass (RG) cullet on fresh and hardened properties of self-compacting concrete (SCC) were investigated. RG was used to replace river sand (in proportions of 10%, 20% and 30%), and 10. mm granite (5%, 10% and 15%) in making the SCC concrete mixes.. Fly ash was used in the concrete mixes to suppress the potential …
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1 Singapore Centre for 3D , School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798 . ... 2.2 Recycled glass aggregates concrete . 82.
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Mixing light and dark colors of glass will give you a terrazzo effect. If you use clear glass aggregate, it will take on the color of the matrix, and it will add the most depth. Since glass is acid resistant, acid staining will color the surrounding matrix without affecting the color of the aggregate. Finely ground glass can add background ...
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The 3D printed bench. Photo via NTU Singapore. Why does concrete need aggregates? Concrete is a mixture of portland cement, water, and aggregates such as …
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Rod Sweet 27.04.22 Just 13% of the 74,000 tonnes of glass waste generated in Singapore is recycled (Aleksandr Kadykov/Unsplash) Researchers from Nanyang Technological …
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It showed greater improvements in recycled aggregate concrete than natural aggregate concrete. 3.2.5 Iron Waste (IW) Ismail and Al-Hashmi examined the feasibility of reusing waste iron in concrete as a partial replacement for sand with percentages ranging from 10 to 20% in the concrete mixtures. The results showed that the concrete mixes …
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SINGAPORE: Concrete – one of the most consumed materials in the world ... It can then be used to replace up to 50 per cent of the aggregates typically used in concrete, depending on the grade of ...
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Many experimental studies were conducted to determine the icompressive istrength of concrete comprising recycle glass aggregates (RGA) as aggregate compared with concrete comprising natural ...
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the crushed glass aggregate required further increase of the superplasticizer content to keep the same slump value of 55 ± 5 mm. The reduction in the slump values which is a measure of a decrease in the workability of concrete with glass aggregate is an indicator that glass aggregate had a negative impact on the workability …
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Here in Singapore, a JTC-led research team is studying the feasibility of substituting natural sand in concrete for recycled plastic waste. The results have been promising, bringing us closer towards a circular …
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Tests will be conducted to determine the properties of plastic aggregate. In this Study we have casted M25 Grade concrete replacing partially the cement with Glass Powder at various percentages ...
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Moreover, it was noticed that, for the same recycled glass aggregate, the geopolymer concrete provided a lower porosity compared to the OPC concrete. For instance, for a 10% recycled glass aggregate, the VPV of the OPC concrete was 11.76% and the VPV of the heat-cured and ambient-cured geopolymer concretes were 8.05 and …
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Cement, as the most important binding agency in concrete, is the source of about 8% of the world's carbon dioxide emission. Previous studies have demonstrated the viability of using waste glass to replace cement to …
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Besides, waste glass collected in Cairns Regional Council has to travel more than 2000 km to the southern parts of Australia to get recycled which makes the potential of alternative use of glass waste in concrete. In Singapore, 72300 tonnes of waste glass was produced, of which 57600 tonnes were disposed in 2016 [49 W. Management, Ed., (NEA), N ...
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