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Articles by B. Vidivelli
Total Records ( 2 ) for B. Vidivelli
  D. Raj Kumar and B. Vidivelli
  Problem statement: In India, the early deterioration of reinforced concrete structures has become a big social problem in recent years. An essential research is needed for the development of effective repair materials and their execution systems comes to an important issue from the viewpoint of the longevity of infrastructures at present. Ferrocement laminates are introduced to enhance the overall performance of Reinforced Concrete (RC) structures and these days the use of it is a promising technology for increasing the flexural strength of deficient reinforced concrete members. Approach: The repair system aims to provide quantitative repair enhancement as well as extending the life of deteriorated concrete members. This research in particular inspired the initiation of the present work which aimed to develop a material with unique properties and a very wide range of practical applications. The mechanical properties of mortar through difference in polymer content with Acrilic Latex by ferrocement among three different volume fractions of mesh reinforcement were studied. Following the encouraging progress made in the formulation and evaluation of the polymer modified repair mortar, tests were carried out involving the application of the reinforced repair material to the soffit of the reinforced concrete beams of 3 m length. Results: The levels of damage of the original beams prior to repair did not affect the ultimate load of the strengthened beams tested. The performance of the strengthened beams was compared to the control beams with respect to cracking, deflection and ultimate strength which confirm preeminent results. Conclusion: This accomplished the fact that acrylic rubber latex modified ferrocement is a doable alternative strengthening component for the rehabilitation of reinforced concrete structures. Further developments in these systems will create dramatic improvement into the field of rehabilitation of old privileged structures.
  K. Natarajan and B. Vidivelli
  The objective of this study is to analyse a space frame-raft-soil system under static load to understand the influence of column spacing on the behavior of a soil-raft and frame. In the analysis, all three components space frame, raft and soil were considered as a single compatible unit. The analyses are carried out for linear and non-linear conditions, in which soil is treated as a homogeneous and isotropic continuum. The analyses are carried out by ANSYS finite element code. The results of four different column spacings are compared and the influence of the column spacing on settlement, the bending moment and contact pressure are studied. The settlement increases considerably with increases in column spacing. The column spacings resulted in the rafts of the two raft types rigid raft and flexible raft according to the bending moment in the raft. The column spacing has a marginal effect on the contact pressure. The results of two different raft thicknesses are compared and the influence of the raft thickness on settlement, the bending moment and contact pressure are also studied. The increase in raft thickness resulted in reduced settlement, an increased bending moment and reduced uniform contact pressure. The results of two soils with different Young’s modulus are compared and the influence of Young’s modulus on settlement bending moment and contact pressure is also studied.
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