scholarly journals Effect of Waste Glass Bottles-derived Nanopowder as Slag Replacement on Mortars with Alkali Activation: Durability Characteristics

Author(s):  
Hussein K. Hamzah ◽  
Ghasan Fahim Huseien ◽  
Mohammad Ali Asaad ◽  
Dan Paul Georgescu ◽  
S.K. Ghoshal ◽  
...  
2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Wenxue Ran ◽  
Fan Chen ◽  
Qianni Wu ◽  
Sen Liu

The recycling of waste products can sharply save manufacturing cost and improve the economic efficiency and corporate-reputation. It also has a great effect on the environment and resources protection. In the management of the closed-loop supply chain, the recycling of waste products and decision-making on pricing often directly affect the supply and demand of products and the operation efficiency of supply chain. Therefore, first we take waste glass bottles as an example and establish a mathematical model to solve the profit of manufacturers and retailers solely. Then, we analyzed whole supply chain profit under a dual-channel recycling condition which is directly recycled by consumers or by retailers. Finally, we concluded that no matter what product’s price, quality, profit, or operational efficiency of supply chain is, the overall recycling is better than the single node recycling model. Based on the analysis, we developed a new model to coordinate the profit of manufacturers and retailers in the supply chain with revenue-sharing contract. A numerical study shows that this approach is applicable and effective.


2019 ◽  
Vol 69 (335) ◽  
pp. 194 ◽  
Author(s):  
S. Stoleriu ◽  
I. N. Vlasceanu ◽  
C. Dima ◽  
A. I. Badanoiu ◽  
G. Voicu

Porous alkali activated materials (AAM), can be obtained from waste glass powder and slag mixtures by alkali activation with NaOH solution. To obtain an adequate porous microstructure, the hardened AAM pastes were thermally treated at temperatures ranging between 900°C and 1000°C, for 60 or 30 minutes. Due to the intumescent behaviour specific for this type of materials, an important increase of the volume and porosity occurs during the thermal treatment. The partial substitution of waste glass powder with slag, determines the increase of compressive strength assessed before (up to 37 MPa) and after (around 10 MPa) thermal treatment; the increase of slag dosage also determines the increase of the activation temperature of the intumescent process (above 950°C). The high porosity and the specific microstructure (closed pores with various shapes and sizes) of these materials recommend them to be utilised as thermal and acoustical insulation materials.


2021 ◽  
Vol 5 (2) ◽  
pp. 214
Author(s):  
Supiatun Supiatun ◽  
Miftahul Jannah ◽  
Ela Nindriyani ◽  
Neta Dian Lestari

The problem of waste is a common problem in the world, in the era of the Industrial Revolution 4.0, ready-to-eat food and beverage products resulted in piles of waste which resulted in environmental pollution. Waste that can damage the environment is waste that cannot be decomposed by nature. As a form of saving the earth to reduce the waste of plastic bottles and glass bottles, the younger generation should be able to use them such as pencil boxes, plastic flower vases, chairs, multipurpose storage places and bross. Meanwhile, waste glass bottles can be made into products such as miniatures, flower pots and home decorations. Permasalahan sampah menjadi masalah bersama didunia, pada era Revolusi Industri 4.0, produk makanan dan minuman kemasan siap saji mengakibatkan timbunan sampah yang mengakibatkan pencemaran lingkungan. Sampah yang dapat merusak lingkungan adalah sampah yang tidak dapat terurai oleh alam. Sebagai bentuk penyelamatan bumi mengurangi limbah botol plastik dan botol kaca, sebagai generasi muda harus dapat memanfaatkan seperti kotak pensil, vas bunga bunga dari plastik, kursi, tempat penyimpanan serbaga guna dan bross. Sedangkan limbah botol kaca dapat dibuat produk seperti miniatur, pot bunga dan hiasan rumah.


2021 ◽  
pp. 252-261

The combustion of fossil fuels results in creating a lot of solid wastes such as fly ash and slag. However, these environmentally unfriendly materials can be used as a raw material for alkali activation – geopolymerization. Although these wastes have been successfully used in industrial production for several decades, its use does not achieve the level of its potential. Today, to achieve a sustainable construction industry, alternative cement has been extensively investigated. Geopolymer (GP) is a kind of material that is obtained from the alkaline activator, and it can be produced from industrial wastes or by-products. The aim of this work was to describe the improvement of mechanical properties of alkali-activated binders – geopolymers made of fly ash and blast furnace slag. The effect of the addition of waste glass in three different values feed into fly ash or GGBFS, and its impact on mechanical properties (compressive and flexural strengths) of geopolymers was examined. The highest value of compressive strength was achieved with 20% waste glass addition to a fly ash sample on 90th day 58,9 MPa. The waste glass was added in the form of broken and crushed glass particles.


2020 ◽  
Vol 46 (11) ◽  
pp. 17957-17961 ◽  
Author(s):  
Fabiana Pereira da Costa ◽  
Crislene Rodrigues da Silva Morais ◽  
Alisson Mendes Rodrigues

2020 ◽  
Vol 40 (11) ◽  
pp. 3776-3787 ◽  
Author(s):  
Bartolomeo Coppola ◽  
Paola Palmero ◽  
Laura Montanaro ◽  
Jean-Marc Tulliani

2021 ◽  
Vol 13 (9) ◽  
pp. 4960
Author(s):  
Abdelhadi Bouchikhi ◽  
Walid Maherzi ◽  
Mahfoud Benzerzour ◽  
Yannick Mamindy-Pajany ◽  
Arne Peys ◽  
...  

Few studies focus on the co-valorization of river dredging sediments (DS) and residual waste glass (RWG) in alkali-activated binders. This study investigates the use of DS as an aluminosilicate source by substituting a natural resource (metakaolin (MK)), while using RWG as an activator (sodium silicate source). Suitable treatments are selected to increase the potential reactivity of each residue. The DS is thermally treated at 750 °C to promote limestone and aluminosilicate clays’ activation. The RWG (amorphous, rich in silicon, and containing sodium) is used as an alkaline activator after treatment in 10 M NaOH. Structural monitoring using nuclear magnetic resonance (29NMR and 27NMR), X-ray diffraction, and leaching is conducted to achieve processing optimization. In the second stage, mortars were prepared and characterized by determining compressive strength, water absorption, mercury porosimetry and Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM-EDS). Results obtained show the great advantage of combining RWG and DS in an alkali-activation binder. The treated RWG offers advantages when used as sodium silicate activating solution, while the substitution of MK by calcined sediments (DS-750 °C) at 10%, 20%, and 30% leads to improvements in the properties of the matrix such as an increase in compressive strength and a refinement and reduction of the pore size within the matrix.


2021 ◽  
Author(s):  
Hansol Lee ◽  
Hoon Lee

Abstract Due to depletion of resources and the spread of environmental pollution, the sustainability of raw materials is emerging as an important issue. Glass bottles are one of the products that are easy to recycle, and many studies have been conducted to improve the recycling rate. In this study, we attempted to develop the waste glass bottles process that can be recycled into a glass cullet and recycled glass aggregate. To produce a cullet from waste glass bottles(WGBs), color quality standards must be satisfied. Therefore, we applied a multistage color sorter to the experiment. The recycled aggregate glass must adjust the particle size. Thus, we experimented with the optimum crusher selection test when applying the crushing process. And, we confirmed the appropriateness of process by aspect ratio analysis of product. In addition, we confirmed the trends in the data required to set the optimum design and operating conditions of the selected vertical shaft impact(VSI) crusher using discrete element method(DEM) simulations.


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