Advanced Materials Research Vol. 1182

Abstract: This work's primary goal is to assess the qualities of concrete that has been hardened and fresh using fly ash and coconut shell. These days, a lot of research is being done to identify substitute building materials because cement and other elements required to make concrete are becoming scarce. In this experimental inquiry, we consistently employed 30% fly ash as cement and 10% to 30% of shell of coconut as CA. Concrete covering fly ash and coconut shell was compared to conventional concrete, both in its fresh and hardened states, without any substitutions. Upon completion of this study, it was found that a rise in the proportion of coconut shell replacement would result in a notable decrease in workability. The highest workability is achieved in concrete that has 30% FA as binding cement and 10% CS as a CA. Additionally, it was shown that concrete containing 30% FA and 10% shell of coconut as coarser aggregate had the highest compressive potency and tensile parameter strength.

Abstract: This study investigates the elastic properties of M20 grade concrete by partially replacing the fine aggregates with plastic waste. Plastic waste possess a big problem for the environment because it cannot be biodegraded in nature. Incorporating it into concrete could be a solution to waste management and improve concrete performance. In this, waste plastic flakes of different proportions (1%,2%,3%,4%,5%) are partially replaced with fine aggregate for achieving the better elastic strength in concrete. The findings provide insight into the feasibility and effectiveness of using plastic waste in concrete production.

Abstract: This study presents preliminary investigations on the strength properties of concrete using addition of Alccofine. Concrete mixtures were prepared with varying percentages of Alccofine ranging from 0% to 20% and tested for compression strength and splitting tensile strength after 7, 14 & 28 days of curing. During the first week of curing (7 days), the concrete gains initial strength. Extending the curing period to 14 days allows for further hydration and strength development in the concrete. The 28-days of curing period is a critical milestone in concrete curing, as it represents the standard duration for assessing the concrete's compressive strength characteristics. The optimum percentage of Alccofine was arrived at15%. Exceeding the optimum percentage of Alccofine (20%) can lead to an adverse effect on strength due to potential issues like excessive pozzolanic reactions or changes in the concrete's microstructure. This information will help in determining the optimal proportion of Alccofine for achieving the desired strength and performance characteristics in the concrete mixtures.