Recent developments in the field of adhesives have led to the availability of post‐installed reinforcing bar (rebar) systems with high strength mortar. The bond strength of these mortar‐rebar systems can reach significantly higher values than the bond strength of cast‐in rebar systems in normal strength concrete. However, based on the boundary conditions of concrete cover, concrete strength, transverse reinforcement, etc., the usable bond strength of post‐installed rebar system could be limited by concrete splitting prior to attainment of the bond strength. In order to study the influence of above‐stated boundary conditions on the usable bond strength of post‐installed rebar, a new test specimen is designed on the basis of the beam‐end specimen. The specimen allows for testing of the post‐installed rebar system under realistic boundary conditions and clearly defined bonded zone while measuring unloaded‐end slip and the width of splitting cracks.

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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Base isolation is a device which is used to discrete the building from its foundation. Therefore, all through seismic activity, the building does not change due to the earthquake. Even if the earth moves violently, buildings tend to move like rigid bodies instead of collapsing In the current study, reinforced concrete framed structures of G + 8 and G + 16 (with and without base isolation) are considered with a 3 m high floor in the seismic zone V. The base isolator for both structures is designed to determine the stiffness and physical magnitudes of the lead rubber bearing core (LRB) specified at the base of the frame. The buildings were analyzed using nonlinear time history technique in ETABS. The effect of Base isolator is studied and building reactions like storey displacements, storey shear, storey drifts, and overturning moments can be seen in graphs. A general examination of G+8 and G+16 buildings with and without base isolator is watched.