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The strength of Al 6063 and against its reinforced samples using coconut husk has been analysed. The wide range of applications of these metals lies in the field of aeronautical engineering, automobile engineering, marine Industry, military and also in the architectural field. The different tests which have been carried out on this metal and its composites are UTM, Brinell test and Impact test. Muhib-Ul-Hussian | Dr. Gautam Kocher | Er Pradeep Singh "Strength Analysis of Aluminium Composite Reinforced with Coconut Ash Powder: A Review" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-3 , April 2020, URL: https://www.ijtsrd.com/papers/ijtsrd30525.pdf Paper Url :https://www.ijtsrd.com/engineering/mechanical-engineering/30525/strength-analysis-of-aluminium-composite-reinforced-with-coconut-ash-powder-a-review/muhibulhussian

As a developing country, Bangladesh has to face numerous challenges. Self Independence in electricity, contributing to climate change by reducing carbon emission and bringing the backward population of society to the mainstream is more challenging for them. Therefore, it is essential to ensure recycled use of local products to the maximum level in every sector. Some private organizations have already worked alongside government to bring the backward population to the mainstream by developing their financial capacities. As rice husk is the largest single category of the total energy supply in Bangladesh. As part of this strategy, rice husk can play a great as a promising renewable energy source, which is readily available, has considerable environmental benefits and can produce electricity and ensure multiple uses of byproducts in construction technology. For the first time in Bangladesh, an experimental multidimensional project depending on Rice Husk Electricity and Rice Husk Ash (RHA) concrete brick/block under Green Eco-Tech Limited has already been started. Project analysis, opportunity, sustainability, the high monitoring component, limitations and finally evaluated data reflecting the viability of establishing more projects using rice husk are discussed in this paper. The by-product of rice husk from the production of green electricity, RHA, can be used for making, in particular, RHA concrete brick/block in Bangladeshi aspects is also discussed here.

The performance of a sustainable green concrete with fly ash (FA), rice husk ash (RHA), and stone dust (SD) as a partial replacement of cement and sand was experimentally explored. FA and RHA have a high silica content, are highly pozzolanic in nature and have a high surface area without any treatment. These by-products show filler effects, which enhance concrete's density. Results showed that the FA and RHA materials have good hydration behaviour and effectively develop strength at an early age of concrete. SD acts as a stress transferring medium within concrete, thereby allowing the concrete to be stronger in compression, and bending. Consequently, water absorption capacity of the sustainable concrete was lower than that of the ordinary one. However, a little reduction in strength was observed after the replacement of the binder and aggregate using the FA, RHA and SD, but the reduction was insignificant. The reinforced structure with sustainable concrete containing the FA, RHA, and SD generally fails in concrete crushing tests initiated by flexural cracking followed by shear cracks. The sustainable concrete could be categorized as a perfect material with no significant conciliation in strength properties and can be applied to design under-reinforced elements for a low-to-moderate service load.

AbstractA study on the removal of hexavalent chromium by adsorption of rice husk nanosilica was attempted. The usage of chromium causes immense pollution as it is used in the leather industry, metal finishing, electroplating, and chromate preparations. To understand the adsorption capacity and its behavior, as well as the adsorption potential of rice husk nanosilica, the effluent used in this experiment is tannery wastewater. The experiment was conducted in tannery industrial wastewater using nanosilica extracted from rice husks ash for various pH, contact time, and adsorbent dosages. The result shows 88.3% chromium removal using rice husk ash nanosilica (RHANS) at pH 4, 1.75 mg adsorbent dosage, and 50 min of contact time. Removal of chromium by this method was a more economical and alternative process. RHANS was selected due to its source availability and antimicrobial properties.

This study investigated the geotechnical and microstructural properties of cement-treated laterites stabilized with rice husk ash and bamboo leaf ash. In going about the tests, the soil sample was subjected to compaction, California Bearing Ratio (CBR) and preliminary tests; such as specific gravity, particle size distribution and Atterbergs limits to determine its index properties. Thereafter, the soil sample was mixed with cement at varying proportions of 0–12% at 2% intervals and also, separately mixed with bamboo leaf ash (BLA) and rice husk ash (RHA) in proportions of 0–16% at 2% intervals. The mixes at each stage were subjected to compaction, Atterberg limits and CBR tests. The highest values were 66.7% and 54.8% for unsoaked and soaked CBR at 6% cement+8% BLA and 78.5% and 63.8% for unsoaked and soaked CBR at 8% cement+8% RHA. Samples at these optimal CBR values were subjected into Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD) tests. Results showed that new compounds were formed and there were changes in the microstructural arrangements. It can therefore be concluded that pozzolanic and cement hydration reactions actually took place in the course of stabilization.

Geopolymers simultaneously containing two waste materials have been developed: fluid catalytic cracking catalyst (FCC) as mineral admixture and rice husk ash (RHA) for preparing an alkaline activator. Alkaline activators were prepared by refluxing aqueous mixtures of ground or original RHA with NaOH. All mortars with alkaline activator containing RHA show compressive strength (cured at 65 °C for 1 day) in the range of 31 41 MPa, which is similar to control mortar prepared using an equivalent mixture of NaOH and water glass. Refluxing times between 30 and 240 min yielded good performance mortars. This new way of valorisation would imply economic and environmental benefits in geopolymer production. ; GEOCEDEM Project BIA 2011-26947 was financed by Spanish Government, Project 3018/2009 was financed by Generalitat Valenciana, Project AP/35235/11 was financed by AECID, COMBURES Project was financed by Centro de Cooperacion al Desarrollo de la Universitat Politecnica de Valencia ADSIDEO COOPERACIO and OMYA Clariana S.A. and Maicerias Espanolas DACSA S.A. supplied FCC and RHA samples respectively. ; Bouzón, N.; Paya Bernabeu, JJ.; Borrachero Rosado, MV.; Soriano Martínez, L.; Mitsuuchi Tashima, M.; Monzó Balbuena, JM. (2014). Refluxed rice husk ash/NaOH suspension for preparing alkali activated binders. Materials Letters. 115:72-74. https://doi.org/10.1016/j.matlet.2013.10.001 ; S ; 72 ; 74 ; 115