Using Recycled Concrete Powder, Waste Glass Powder, and Plastic Powder to Improve the Mechanical Properties of Compacted Concrete: Cement Elimination Approach

Abstract

The environment receives millions of tons of garbage, including plastic and glass, and concrete building debris contributes to a number of environmental problems. In order to reduce cement and make use of waste materials like glass and plastic, this research creates compacted concrete samples using waste glass powder, waste plastic powder, micro-silica, fly ash, and recycled powdered concrete. Compressive, nonlinear behavior, and SEM tests on compacted specimens showed that by removing 80% of the cement and substituting 20% recycled concrete powder, 15% micro-silica, 15% fly ash, 15% waste plastic powder, and 15% waste glass powder (at 80°C for 20 minutes), sustainable concrete with compressive and flexural strengths nearly equal to the sample’s compressive and flexural strengths was produced. Micro-silica has several shortcomings regarding improving concrete strength and building a suitable combination with recycled concrete powder. In extremely small quantities, glass powder may be used to replace cement, and in greater quantities, it can take the place of aggregate. Finally, it was found that concrete mortar could be made completely sustainable by using recycled materials like glass, plastic, and recycled concrete, as well as micro-silica and fly ash, and that only 20% of the weight of cement could be used without lowering the compressive and flexural strength of the concrete.

Effects of incorporating granite powder in the mechanical properties of concrete

“…DOI 10.22630/ srees.4479 up to 11% compared to its standard design of 210 kg•cm -2 (Prokopski, Marchuk & Huts, 2020). Similarly, in another study, GP was incorporated at 28.4% and 45% as a partial replacement for the sand for a design of 210 kg•cm -2 where the resistance was increased by 19% and 25% compared to the standard design, demonstrating an effect positive in both early strength and quality of concrete, as well as strength after 90 and 180 days of hardening (Ghorbani et al, 2019;Najaf & Abbasi, 2022b). Respect for the environment and the profitability of residual GP make it an acceptable and sustainable alternative construction material, indicating an enormous potential for GP as a replacement for natural fine aggregate (Singh, Khan, Khandelwal, Chugh & Nagar, 2016;Najaf & Abbasi, 2022a).…”

Analyzing the Use of Recycled Materials in Sustainable Concrete in the GCC Countries

“…This crushed stone is not inferior in quality to the primary stone, but it is less expensive. Concrete and metal reinforcement are used to make sustainable concrete products (Najaf, & Abbasi, 2022). Concrete slabs and other similar products can be processed not only on the premises of the processing facility using stationary equipment.…”

“…The construction industry is a major contributor to the GCC economies and UAE is specifically focused on developing modern infrastructure and the use of recycled material for the development of sustainable concrete. According to studies 70 to 80 thousand tons of concrete waste is utilized by UAE to get crushed stone and the remaining concrete waste is used in landfills and unauthorized dumps (Najaf & Abbasi, 2022). Recycling concrete waste leaves a positive impact on the environmental, technological, and economic aspects of the modern world.…”

Determination of Optimized Mix Design of Reactive Powder Concrete

“…Reactive powder concrete (RPC) is an ultrahighperformancecement-based composite concrete in which the traditional coarse aggregate has been replaced by fne sand [1][2][3][4][5][6][7][8][9]. Te term "reactive powder" means that all the powder components in the RPC are chemically reactive [10].…”