This paper presents a study on the performance evaluation of slump flow, passing ability, and the compressive and flexural strength and Durabity up to 56 days of SCC and standard concretes with 0.4% volume fraction WHF and RHA. Three different replacement percentages of cement with varied volume fractions were used for both SCC and normal specimen. Results were compared to standard mixtures, concluded that WHF-RHA provides positive result on the mechanical properties at 28 days. Based on the result, mixture with 0.4% WHF and 10% RHA have higher value than standard concrete in flexural test, while mixture with 0.4% WHF and 10% RHA has close range in compressive test.

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Every year, various industries throughout the world create more than two billion metric tons of alkaline residue. The effectiveness and strength of concrete are significantly impacted by these leftovers. It's critical to comprehend how alkaline residues behave in concrete in order to minimize or lessen the issues they create. The purpose of the current research is to compare the strength characteristics of high- and low-density concrete in an alkaline environment. Various low-density aggregates, including pumice and vermiculite, are used to create low-density concrete mixtures. To create low-density concrete, one mixture substitutes pumice material for all of the typical coarse aggregate, while another substitutes vermiculite for 30% of the fine aggregate. Utilizing various high-density aggregates, such as barite and haematite, allows for the creation of high-density concrete mixtures. Barite and haematite are used as coarse aggregate in two distinct mixes to create high-density concrete by completely replacing the conventional coarse aggregate in each mix. Concrete examples are subjected to two distinct curing processes after casting. In one curing condition, concrete specimens are cured using regular water; in the other, they are cured using alkaline water after being cured in normal water for seven days. Using NaOH pellets, an alkaline solution with a pH of 13 is produced. Rapid Chloride Penetration, Split-Tensile Strength, Flexural Strength, and Compressive Strength To determine the impact of alkaline curing on concrete specimens, test results from specimens that were cured in an alkaline environment were compared to those of standard specimens.

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buildings often face space constraints due to the current surge in urbanization. The structure can be affected by wind gusts in both directions. These gusts have the potential to impact the structure from both directions. Over the past few years, the structure has experienced effects from these gusts in both directions. These designs aim to enhance the visual perspective of the projects they undertake. The variability in floor height causes a discontinuity in the stiffness of the structure at the level of the soft story. This phenomenon is caused by floor height fluctuations. In the even If winds expose this discontinuity, it could potentially cause buildings to This study aimed to perform a static analysis of three-dimensional building frames, which included G+7 storeys, floating columns, and soft storey elements. elements. The other sixty-four examples feature floating columns at a single level, with the soft storey varying directly from the ground (G) story to the G+7 storey. Eight of the instances include centre floating columns on any one of the storeys, while sixty-four of the other cases have floating columns at a certain level. This instance considers a total of seventy-three instances. Furthermore, we construct a simple example where neither the storeys nor any of the column’s float, adhering to the previously stated conditions. In addition to the previously stated conditions, we construct a simple example where neither the floors nor any of the columns float. We have adjusted the floor heights to achieve the desired appearance. We conducted the analysis using the maximum node displacements (resultant), maximum moments, maximum shear force, maximum axial force, and maximum storey drift. It is necessary to do an analysis of the findings in order to arrive at technical conclusions.

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The employment of carbonate-producing bacteria as a new approach to enhance the qualities of concrete has attracted a lot of interest since it is thought to be innocuous to the environment, natural, and maybe advantageous. This is a result of the favorable implications attached to these traits. The use of microbially induced carbonate precipitation as a remedy for several problems affecting concrete, such as fracture healing, reduction and change of porosity and permeability, and more, has been the subject of much investigation. Concrete crack healing is one of the topics that have been researched. Additionally, it has been shown that the procedure of bacterial carbonate precipitation, also known as bio deposition, contributes to the development of concrete's compressive strength. There has not yet been a thorough investigation of the research relating to the appropriate bacterial solution dose and its effect on concrete durability. This might occur as a result of the project not receiving enough time to complete it. As a result, it has been decided that an investigation will be conducted in order to determine the proper quantities of bacterial solution required for concrete. To do this, several concrete cube samples will be made using varying amounts of bacterial solution, such as 15 ml, 30 ml, 45 ml, 60 ml, and 75 ml, respectively. These quantities will be added to the appropriate moulds. This will allow you to determine the proper dosage of the bacterial solution to employ. In order to determine the optimal dosage that should be used, these various samples are also put through a battery of tests using a variety of laboratory techniques, such as the properties of materials, slump cone test, a compressive strength testing machine, an ultrasonic pulse velocity test, plate count cells, and scanning electron microscopes, Rapid Chloride Penetration Test (RCPT), Acid attack test.

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Studies on the methods to mitigate the effects of earthquake on structures has gained up pace since the last four decades with the invention of base isolation techniques and then the energy dissipating seismic devices. Here in this work an effort has been made to study the effects of Lead Rubber Bearing (LRB) as base isolator and Friction Dampers as energy dissipating devices when installed individually and when as a dual combination in the eight storey ‘C’ shaped building considered by the use of ETABS software. The building is assumed to be located in earthquake zone 4 and the method of seismic analysis chosen is linear Response Spectrum analysis. The response parameters that are studied in this work are time period, base shear, storey displacement and storey drifts. The results show that these devices have improved seismic resistance of the building by decreasing the responses of the structure when included as individually and when as a combined control strategy. The improved results are in comparison with the conventional model.

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Even though it is the second most extensively used material in the world, after water, concrete is prone to a broad variety of damages due to its low tensile strength. This is despite the fact that concrete is the second-most widely used material in the world. There are a few characteristics that are connected to concrete that is produced by employing Portland cement as the primary construction material. In terms of compression, it is fairly robust, but when it comes to tension, it is insufficient, and it has a propensity to be brittle. Because of both of these shortcomings, its use has been limited. There has been a significant increase in the demand for concrete as a material for construction. This is due to the fact that concrete is a material that is both long-lasting and inexpensive, as well as the rapid growth of the building industry and the expansion of the world's population. The use of concrete leads to a rise in the use of Portland cement, which in turn leads to an increase in the amount of energy and emissions that are created. This cycle continues until the quantity of energy and emissions increase. We came to the realization that metakaolin and red soil may be replaced in a partial amount of up to 15-20% and 20%, respectively, in order to generate the same strength as traditional concrete. This was the conclusion that we came to. Because of the considerable study that we conducted on the relevant literature, we were able to arrive at this conclusion. During the course of our inquiry, we want to ascertain the suitable ratio of metakaolin to red soil that ought to be used in the production of concrete in order to achieve the maximum possible degree of strength. In order to identify the suitable amount of metakaolin and red soil that may be partially replaced in the manufacture of concrete, we conducted a compressive test, a flexural strength test, and a split tensile strength test. These kinds of tests were carried out in order to find the appropriate quantity. It has been determined that the best possible result can be accomplished by partly substituting cement with metakaolin and red soil at a proportion ranging from 20–5%. This is the conclusion that has been reached.

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Since the existence of lace in horizontal space has encouraged people to soar higher, there has been a consistent trend towards the creation of taller structures. However, pushing the vertical limit further increases the hazard factor. We must assess the building for a range of loads to ensure safety. An examination of a building is required to ascertain its seismic resistance because the behavior of a structure is critical during an earthquake. An earthquake may bring a high-rise structure to the ground, a risk that is difficult to predict. Therefore, it is necessary to do a seismic force assessment on different types of buildings. The seismic officious can use the seismic coefficient technique to analyses small and medium-sized buildings up to a height of forty meters. d of analysis that requires less manual computation. The overall shape, size, and geometry of a structure all have a significant role in defining its behavior. since asymmetry is because asymmetrical structures are more likely to exhibit critical behavior during an earthquake than symmetrical ones. of the characteristics of symmetrical, L-shaped, and T-shaped and build RC structures during earthquakes to better understand the variations in seismic loading and behavior that may arise due to form variances. The seismic ETABS software aids in the seismic coefficient study of a ten-story building with three-meter-tall levels and a varied plan shape, including symmetrical, L-shaped, and T-shaped configurations. al inspection of a ten-story structure takes a long time and increases the chance of errors. ETABS can simplify, improve efficiency, and increase the accuracy of a structure's analysis. The analysis is conducting the analysis by adhering to IS 1893:2002 (Part 1). shaped RC structures have their own response, which includes, among other things, lateral pressures, base shear, storey drift, and storey shear. We use the reaction of the variously shaped buildings to compare the findings.

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