No abstract

Invention of new methods in strengthening concrete is under work for decades. Developing countries like India use the extensive reinforced construction works materials such as fly ash and bottom ash and other ingredients in RCC construction. In the construction industry, major attention has been devoted to the use of fly ash and bottom ash as cement and fine aggregate replacements. In addition, light expanded clay aggregate has been introduced instead of coarse aggregate to make concrete have light weight. This paper presents the results of a real-time work carried out to form light weight concrete made with fly ash, bottom ash, and light expanded clay aggregate as mineral admixtures. Experimental investigation on concrete mix M20is done by replacement of cement with fly ash, fine aggregate with bottom ash, and coarse aggregate with light expanded clay aggregate at the rates of 5%, 10%, 15%, 20%, 25%, 30%, and 35% in each mix and their compressive strength and split tensile strength of concrete were discussed for 7, 28, and 56 days and flexural strength has been discussed for 7, 28, and 56 days depending on the optimum dosage of replacement in compressive strength and split tensile strength of concrete.

The lightweight aggregate is an aggregate that weighs less than the usual rock aggregate and the quarry dust is a rock particle used in the concrete for the experimentation. The significant intention of the proposed technique is to frame a mathematical modeling with the aid of the optimization techniques. The mathematical modeling is done by minimizing the cost and time consumed in the case of extension of the real time experiment. The proposed mathematical modeling is utilized to predict four output parameters such as compressive strength (Mpa), split tensile strength (Mpa), flexural strength (Mpa), and deflection (in mm). Here, the modeling is carried out with three different optimization techniques like genetic algorithm (GA), particle swarm optimization (PSO), and ant colony optimization (ACO) with 80% of data from experiment utilized for the training and the remaining 20% for the validation. Finally, while testing, the error value is minimized and the performance obtained in the ACO for the parameters such as compressive strength, split tensile strength, flexural strength, and deflection is 91%, 98%, 87%, and 94% of predicted values, respectively, in the mathematical modeling.

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Emergent countries employ the broad toughened building resources such as plastic powder, silica fume and other ingredients in concrete. In accumulation, steel slag has been introduced as an alternative of coarse aggregate to put together concrete encompass good possessions. This paper describes the results of a coordinated work carried out using plastic powder, steel slag and silica fume to form the concrete. New research on concrete mix M20 was carried out for 7, 28 days by 0 ( zero) percent, 10 percent, 20 percent, 30 percent replacement of fine aggregate by plastic powder, similarly steel slag was replaced by coarse aggregate and their mechanical properties of concrete were addressed by 10 percent addition of silica fume by cement credence. Bending strength has been addressed for 7 days, 28 days depending on the optimum amount of replacement of concrete strength. Depending on the optimum prescribed amount of replacement in concrete strength, flexural strength has been addressed for 7, 28 days. The experimental and finite element analysis results have been analyzed using computational techniques.