The energy absorption capacity of hybrid fiber reinforced high strength concrete non –seismic detailing specimens increased with increase in fiber volume fractions. HYBC2.1 specimen - energy absorption capacity was 257.96kN-mm. It was 23.65 percent more than the energy absorption capacity of HSBC1 specimen. The term Ductility  is defined as the ability of structure to undergo large amount of deformations without reduction of its strength. Deflection ductility was calculated by using peak load deflection curves.
EXPERIMENTAL STUDIES ON MECHANICAL PROPERTIES OF CONCRETE WITH COPPER SLAG AS PARTIAL REPLACEMENT OF FINE AGGREGATE J.UshaKranti1, K.Srinivasu2, A.NagaSai3 1. Asst.Professor, Department of Civil Engineering, R.V.R.&J.C. College of Engineering, Guntur, A.P.,India. 2. Professor, Department of Civil Engineering, R.V.R.&J.C.
The energy absorption capability help reduced the earthquake energy transmitted to the superstructure. Lead Rubber Bearings Lead Rubber Bearing (LRB) are elastomeric bearings that contain one or more lead plugs inserted into their preformed holes. The lead provides significant stiffness under service loads and low lateral loads as compare to the elastomeric bearings. During high lateral loads, the load yields and the lateral stiffness of the LRB is significantly reduced. This increases the duration of the period of the structure and thereby serves as the purpose of base isolation system.
Portland cement mixed with sand, gravel and water, a process called hydration, is how concrete is created. Crushed stone aggregate fine and coarse aggregates make up the bulk of a concrete mixture. Durability of concrete may be defined as the ability of concrete to resist weathering action, chemical attack, and abrasion while maintaining its desired engi-neering properties. Different concretes require different degrees of durability de-pending on the exposure environment and properties desired. For example, concrete exposed to tidal seawater will have different requirements than an indoor concrete floor.
(Engineers say "Stress is proportional to strain".) In symbols, F = kx, where F is the force, x is the stretch, and k is a constant of proportionality. If Hooke's Law is correct, then, the graph of force versus stretch will be a straight line. Tensile testing experiment Purpose of the experiment: Tensile testing is one of the most fundamental tests for engineering,and provides valuable information about a material and its associated properties. These properties can be used for design and analysis of engineering structures, and for developing new materials that better suit a specified use.The basic idea of a tensile test is to place a sample of a material between two fixtures called "grips" which clamp the material.
CME 434 - Finite Element Analysis Project Title: Analysis of Chain Link By: Anuj Salke (UIN 660484908) Sujay Khamitkar (UIN 662253535) Problem Statement: To study the stresses that occurs in a chain link when it is subjected to loads and to verify the results analytically. The aim of the project is to calculate the stresses induced in a chain link analytically and verify if these results are same with the results obtained from ANSYS. We found that they are not exactly same but somewhat similar. Background information: Chain link has been estimated to be in use since 220 BC1. A chain is made of multiple elements as shown in the figure.
1. Conventional Glass Ionomer cement: Ketac-Cem (3M ESPE, Germay) 2. Resin-modified Glass Ionomer cement: GC Fuji Orthoband (Japan) 3. Polyacid - modified Composite cement: Ultra Band-lok (Reliance Orthodontics, USA) 3. Bands Two types of contoured pre-formed bands for premolars were used in the study.
Secondary elements such as barriers, sidewalks, and diaphragms may increase the load carrying capacity of girder bridges. This in turn affects reliability. The objective of this study is to evaluate the potential benefit of secondary elements on the system reliability of girder bridges, if these elements are designed with the structural system to participate resisting vehicular live loads. Simple span, two lane structures are considered, with composite steel girders supporting a reinforced concrete deck. For structural analysis, a finite element procedure is developed that combines a grillage model of the bridge deck with solid elements for edge-stiffening effects.