Waste ceramic tile (CT) powders are used to improve the workability, mechanical properties, and durability of self-compacting concrete (SCC). The waste CT powder is prepared by mixing construction tiles, sanitary fittings, and electrical insulators, with different weight percentages mixed into the SCC. Experiments have been conducted to evaluate the workability, mechanical, and durability of SCC. The optimum compressive, flexural, and tensile strengths were predicted to be 52.5 MPa, 8.5 MPa, and 7.8 MPa. SCC's durability and workability characteristics are achieved by mixing 50% CT powder, which increases interlocking properties and meets EFNARC standards. It is concluded that CT powder can be substituted for conventional fine aggregate in concrete, increasing compressive, flexural, and split tensile strengths by 12.5%, 9.33%, and 28.76% compared to conventional SCC. The 50% CT powder mixed SCC is the optimum value for achieving optimal mechanical, durability, and workability characteristics. Samples of 50% CT powder-mixed SCC with 7, 28, and 90 days of curing processes and microstructure are also illustrated.
Our perceptions, expectations, and ability to control over the world of building materials have transformed as a result of nanotechnology. The field of construction materials will be significantly impacted by advances in nanoscience. This study examines the steps used to stop or lessen concrete's deterioration, which contrasts with concrete with greater compressive strength. The mechanism of reaction clearly lays forth rules for how the likelihood of this disastrous reaction should be completely minimized. The microstructure of concrete became more homogeneous and less permeable as a result of the Nano filler effect and the pozzolanic reaction, which reduced permeability. The corrosion of the steel reinforcement, which is accelerated by the development of micro cracks, is one of the main inherent characteristics that contribute to the deterioration of structural elements. Impact of nano-silica particles on a blended cement paste's hydration, rheology, and strength development. An isothermal calorimetry reveals that nano silica particles cause cement to hydrate more quickly.
This chapter elaborates on the various e-waste production courses from multiple human activities. The impacts of various e-wastes and human diseases are clearly illustrated. The different methods of e-wastes management methods, such as Reduce, Reuse, Recycle, and e-waste recycling practices in India are also explained. The characteristics of e-waste, the quantity of e-waste, the nature of e-waste, the composition of e-waste, non-hazardous wastes, and hazardous wastes have been discussed. As per the deep survey of e-waste management systems, the scope and proposed e-waste management methods have been driven.
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