This research was conducted to study the benefits of using pieces of crushed brick in the concrete in place of the aggregates that are conventionally used.It is the most widely used construction material because of its ease of making …
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Aggregates in the concrete make the concrete weather resistant through their design and composition. Brick can not be considered a suitable material for mixing in concrete if its weather resistance is declined. To increase the durability of concrete structures, Romans tried several materials in place of aggregates. Owing to the lower modulus of elasticity and higher tensile strength than stone aggregate concrete, brick aggregate concrete is considered a suitable option. Three different concrete mixtures were produced and tested in different conditions. The first sample group was made of 100% gravel, the second sample group contained 100% crushed bricks and the third sample group contained 50% bricks and 50% gravel. A total of 33 concrete cubes were cast, 11 from each group. The concrete cube samples were subjected to repeated cycles of the frosting and thawing process to simulate the real-world conditions. For each concrete mixture, 3 of the cubes were not frozen at all, 3 cubes underwent 10 freeze-thaw cycles and the last 3 cube samples were subjected to a maximum of 20 freeze-thaw cycles. The remaining 2 cubes were subjected to the oven temperatures to determine their porosity. Each concrete cube was tested for its compressive strength, and tensile strength. Brick concrete showed more compressive and tensile strength than ordinary concrete because of lower w/c ratio.
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Crucial metals like iron, aluminium, gold, silver, copper, lead and tin are in short supply these days. Fossil fuels are non-renewable while metals can be recycled but demand is so great from the fast-growing economies like India and China. Man's technical abilities allow him to produce new materials out of various elements.
Global statistics on generated waste is not available. However, statistics from the World Business Council for Sustainable Development show that manufacturers worldwide produce in excess of 25 billion tons of concrete annually. The Environmental Resource Limited in a study conducted in 1979 forecasted the rise in demolition concrete waste from about 54 million tons in 1980 to over 300 million tons in 2020 by members of the EEC (European Environmental Commission) alone.
The benefits of using a web portal in high schools Name Institution Tutor Date The benefits of using a web portal in high schools Research proposal 1) Proposed title for the research proposal The benefits of using a web portal in high schools 2) The purpose of the study This study aims at providing the importance of a web portal within an education setting.
They are mainly used in presentations, demonstrations and visual displays and serves as an easy communication tool, which is used in education institutions as well as in offices. With white board it is easy to brainstorm in a session with feedbacks, which was not easy on a traditional chalkboard.
In those days, concrete was a very basic substance made of lime, calcium, rock, sand and shale. With the several ingredients assembled in the proper proportions, its importance was again realized. When sand and rock were added and mixed with water, it hardened and made primitive concrete similar to what we use for our buildings and structures today.
ed with the same ingredients as that of conventionally vibrated concrete only with certain modifications in mix proportioning, for instance amount of water is reduced, the level of fine aggregate is raised, and amount of the coarse aggregate is reduced. For the reason of
The reflective pieces deal with the most important skill I would like to develop as a leader, which is effective delegation if I am a transformation or transactional leader, and if I am good at problem-solving. The reasons for wanting to learn effective delegation are touched on as well as the benefits this will accrue to employees
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