Daily Archives: November 1, 2026

Authors: Nakirekanti Srinu, A.Upendar

Abstract: Earthquakes produce ground motions with varying frequency characteristics that influence the seismic response of reinforced concrete buildings. This study examines regular and irregular G+9 and G+19 reinforced concrete structures subjected to low-, intermediate- and high-frequency ground motions across different seismic zones. Nonlinear time-history analysis is performed using ETABS to compare base shear, natural time period, storey displacement and storey drift. The study evaluates the effects of building height, structural irregularity, seismic zone and earthquake ground-motion characteristics on structural response. Comparative results are presented through the original numerical tables, structural models and graphical outputs. Keywords: reinforced concrete; seismic response; regular and irregular buildings; ETABS; nonlinear time-history analysis; ground motion frequency.

DOI: https://doi.org/10.5281/zenodo.23861405

Published by: vikaspatanker

Authors: Karnati surya teja, A.upendar

Abstract: A lot of research work has been going on in the field of concrete and constant efforts are going on to improve its performance with respect to strength and durability. One of major considerations in concrete making is gaining control on water. The water supplied during mixing in concrete is needed to hydrate the cement and to achieve the required rheology properties of various concrete materials in their mixing, transportation, placing and compacting. During hydration, there is a need to maintain a correct relative humidity and temperature for developing good concrete. Decrease in relative humidity will cause self desiccation or chemical shrinkage at micro level. To prevent the above problem, it is advised to make embedded water available for curing. There are a number of methods for providing embedded water for curing viz., using light weight aggregate, super absorbent polymers and hydrophilic materials.

DOI: https://doi.org/10.5281/zenodo.23858878

Published by: vikaspatanker