Papers by Keyword: Reuse

Abstract: With the Industrial revolution and modernization, many other issues related to it are also increasing. Problems of resource exploitation, pollution etc. has emerged as global issue and matter of high concern. Out of various industries, construction industry is one such sector which contributes highly for problems like emission of green house gases into atmosphere. Materials like cement, steel, bricks are highly energy intensive materials. Many of the conventional materials and technology options for building construction do not meet sustainability criteria. Lesser use of theses material and alternative environmentally friendly material contributes significantly in reducing CO₂ gas emission and problems associated with it. The strategy of 3R that is Reduce, Reuse and Recycle is one of the important techniques in the construction industry to achieve the sustainability. The same strategy is applied in this research work for finding appropriate substitute for major construction resource that is concrete and on basis of experimental strength results and property findings, the structural stability of various waste mix concrete elements is analyzed and designed so as to find corresponding changes in RCC design if any appears. The comparative results of analysis and design for various such percentage replaced waste mix concrete is highlighted. The analysis and design results obtained on the basis of innovative materials having specimen properties are fair enough for utilizing in construction practices.

Abstract: Every year, millions of cube meters are dredged from dams and restraints as an entertaining and prevention procedure all over the world. These dredged sediments are considered as natural waste leading to an environmental, ecological and even an economical problem in their processing and deposing.Nevertheless, in the context of the sustainable development policy, a way of management is opened aiming to the valorization of sediments as a building material and particularly as a new binder that can be industrially exploited and that improve the physical, chemical and mechanical characteristics of the concrete.This study is a part of the research works realized in the civil engineering department at the university of Mostaganem (Algeria), on the impact of the dredged mud of Fergoug dam on the behaviour of self-consolidating concrete in fresh and hardened state , such as the mechanical performance of SCC and its impact on the differed deformations (shrinkage). The work aims to valorize this mud in SCC and to show eventual interactions between constituents. The results obtained presents a good perspectives in order to perform SCC based in caclined mud.

Abstract: Construction industry is the one that increases the most in Brazil, nowadays. On the other hand, this high development speed brings a concern with the destination of its leftovers. As it happens in most industrial processes, feedstock’s particles size is very important in reuse processes of brick waste and it is directly related with formed materials’ behavior. In this context, the main purpose of this study is to evaluate the influence of particle size in physical properties of specimen made of bricks’ waste through a characterization using Scanning Electronic Microscopy and X-Ray Diffraction. The specimen were made from three different selections of comminuted bricks’ particle size and then submitted to Flexural Strength tests. The results show that the material’s physical properties improve as the feedstock’s particle size decreases.

Abstract: We checker huge quantities of plastic with various forms and types. Major problems caused by these wastes in nature, inside the urban areas and countryside, impose a concern of increasing difficulties for reasons of hygiene and environment Cement concrete is a relatively inert and durable material, compact and waterproof, which can prevent contamination of the environment by living the harmful effects of plastic. In this context it was considered appropriate to include in concrete composition the elements of plastic waste (bag: LDPE) and (bottle: PVC) as a technique for recovery and reuse it’s in the cost. It is a simple and clean procedure to remove these dangerous elements and participate to preserve the nature. Results showed the possibility of using these types of plastic at ambient condition, as a substitution of aggregates, with a slight decrease in compressive strength on the percentage of substitution and an optimal increase in tensile resistance associated with a substantial gain in weight and a high removal rate, especially for PVC. These materials may be intended for the manufacture of components requiring less performance (small works, architectural concrete and decorative elements of the interior, filling, surface coverage and roof.).

Abstract: Recycle, reuse and reduce are commonly heard as the activities to support for green environment. However, without or lack of self awareness and voluntary to contribute to the green it can cause a failure effort and projects from the government and other sectors. Furthermore, the public could not be expected to keep recycling without enough motivation, assistance and facility. Alternatively, we proposed a web application as an e-platform for the community and business entity including shopping mall, green business and other agencies to support and collaborate between each other in supporting for recycle and reuse. We have investigated through survey and interview with those involved including the public and representatives from the selected shopping malls to collect data of the current scenario regarding their awareness and willingness to contribute to green. Our solution called e-Reward for Recyclers purposely to motivate people to recycle their used items from home at one stop recycling centre by collaborating with shopping malls. Lastly, we wanted to connect people from the green business including recycle factory, reused company and welfare organization to the recycle centre for them to collect mass recycled items to be reused for their purposes.

Abstract: The high salinity coking wastewater is a poor biodegradability, extremely complex composition and refractory industrial wastewater after biochemical treatment, which is difficult to achieve reuse standards by conventional processing method. A coking plant used advanced treatment (micro-electrolysis, Fenton) and desalination (electrodialysis, ultrafiltration, reverse osmosis) to treat coking wastewater after biochemical treatment. The effluent quality achieved stability and better than the required quality indicators of reclaimed water of “Code for design of industrial recirculation cooling water treatment” (GB50050-2007). The concentrated water was sent to mining company to comprehensive utilization, which achieved near zero emissions.

Abstract: After biochemical treatment, coking wastewater still contains some organics that are difficult to be degradeda and lot of dissolved salt. Therefore, the biologically treated coking wastewater should be further treated through advanced treatment processes before reuse. The discussions on the advanced treatment technology and the problem analysis in terms of the reuse of coking wastewater are conducted in this study. Possible improvement measures are analyzed and recommended.

Abstract: Reuse of software architecture is a relatively difficult problem in the practice of software engineering realm. For solving the problem, this paper presents an approach which is based on architecture reflection. For the reflection mechanism, the main idea is separating system architecture into two levels – meta-level and base-level. And what’s more, this paper presents a formalization model for the approach by using Pi calculus.

Abstract: How to make discarded mobile mechanical product implement material and components reuse and recycling economical in its all 1ife was the focus of green design. Aiming at the problems of the traditional design which is not considering recycling resources and the influences to the environment after the end of life of the productions, the concept and content of green design for recycling was introduced, in addition, the tactic of green design for recycling was included. At last, the method of realizing the mobile mechanical productions recycling is pointed out.

Abstract: Issues on the end-of-life recovery of automotive component parts are now gaining importance in the automotive industry. Incorporating the idea of recovery and reuse of component parts into the earlier stages of design and development is necessary to ensure the successful recovery of automotive parts and components. In this study, the optimum design of an automobile side door safety beam was proposed and analyzed using the finite element method. Different masses of impactor were used in the impact load simulations, namely, 10 kg, 20 kg, 30 kg, 40 kg, and 50 kg, at an impact speed of 50 km/h. The side door impact beam experimental setup was carried out in accordance with the requirement of the Federal Motor Vehicle Safety Standard intensity test. Numerical simulations were performed using the PAM CRASH^TM software to determine an optimum design of the safety beam, with improvements in energy absorption, characteristics, and durability. Different types of impact become were proposed and analyzed for energy absorption characteristics. The results indicate that the energy absorption characteristics of the proposed W-beam are approximately 40% higher than that of the existing tube-beam, depicting that W-beam may stands a better chance energy attenuation.