Investigation of Partial Replacement of Sand by Blending Glass and Rubber Aggregates
Grant Keeble Kululanga,
Blaston Chirwa,
Innocent Kafodya,
Peter Mbewe
Issue:
Volume 7, Issue 5, October 2022
Pages:
86-92
Received:
21 September 2022
Accepted:
17 October 2022
Published:
28 October 2022
DOI:
10.11648/j.jccee.20220705.11
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Abstract: The continued disposal of waste glass and waste car tyres have become a nuisance to communities and threaten the environmental sustainability of the world. Therefore, recycling waste glass and rubber materials for application in concrete production can become one of the positive means of managing the waste crisis in the world from discarded waste glass and waste car tyres. This paper reports on the performance strength of concrete by investigating a mixture of waste glass and waste rubber tyre crumbs as an alternative fine aggregate replacement of sand. A blend of equally mixed waste glass (50%) and crumbs from waste rubber tyres (50%) was made. One hundred and eighty (180) concrete specimens in 50 mm by 50 mm cylinders moulds of varying replacement of sand aggregate of: 0%; 10%; 20%; 30%; and 40% by weight were prepared. The specimens were made by design mixes of 1:2 and 1:3 of cement to blend of waste glass combined with waste rubber to sand by weight. Such specimens were cured for 7, 14 and 28 days before determining the unconfined comprehensive, flexural and tensile strengths. The results showed that a mixture of waste glass and crumbs from rubber car tyres as partial replacement of sand were more than the referral conventional concrete at all the replacement levels of the natural sand fine aggregate. The study forms the basis for further research; replication of this study could yield rich lessons for concrete production using blended or mixed wastes of glass and rubber.
Abstract: The continued disposal of waste glass and waste car tyres have become a nuisance to communities and threaten the environmental sustainability of the world. Therefore, recycling waste glass and rubber materials for application in concrete production can become one of the positive means of managing the waste crisis in the world from discarded waste g...
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Performance Assessment of Residential Building for Different Plan Configurations in Different Seismic Zones of Bangladesh Using ETABS
J. M. Raisul Islam Shohag,
Kowshik Mozumder
Issue:
Volume 7, Issue 5, October 2022
Pages:
93-101
Received:
1 August 2022
Accepted:
17 August 2022
Published:
4 November 2022
DOI:
10.11648/j.jccee.20220705.12
Downloads:
Views:
Abstract: Computer aided analysis using ETABS according to BNBC 2020 has carried off a phenomenal attention for various specialized cases recently. ETABS software harmonizes every small aspect of civil engineering designing and also the production of diagrammatic sketches. To resist all imposed loads on structures, a significant structural analysis and design might be geared up. There is a challenge for the structural engineers to design buildings for ultimate efficiency and economy with accuracy. ETABS software with the guidelines of BNBC 2020 plays a vital role for these cases. In this study, analysis of a G +12 storied building for H shape, L shape and Rectangular shape configuration has been performed accompanied by ETABS software. BNBC 2020 guidelines have been followed for achieving the ultimate goals. For getting desired outcomes different types of lateral loads have been imposed & afterwards analysed. Three desired parameters like maximum story displacement, maximum story drift, overturning moment have been inspected and compared among four seismic zones in Bangladesh according to BNBC 2020 for different plan configurations. A dramatic phenomenon of the three desired parameters of regular and irregular shaped building has been established for several seismic zones. In this study, there is a significant change of maximum storey displacement of H shaped and Rectangular shaped building has been observed at specific zones on the scale of L shaped building. Similar cases have been studied for maximum storey drift and overturning moment. Therefore a significant economic design aspects has been focused on L shaped building.
Abstract: Computer aided analysis using ETABS according to BNBC 2020 has carried off a phenomenal attention for various specialized cases recently. ETABS software harmonizes every small aspect of civil engineering designing and also the production of diagrammatic sketches. To resist all imposed loads on structures, a significant structural analysis and desig...
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