The IUP Journal of Structural Engineering
An Experimental Study on Notched Beam

Article Details
Pub. Date : Jul, 2019
Product Name : The IUP Journal of Structural Engineering
Product Type : Article
Product Code : IJSE21907
Author Name : Jyoti I Maled and Kiran M Malipatil
Availability : YES
Subject/Domain : Science and Technology
Download Format : PDF Format
No. of Pages : 12

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Abstract

The design of civil engineering structural elements such as beams, columns, footing, slab, pavement, etc. is based on certain design factors. Though we design the structure with maximum safety factor, the structure eventually will get damaged due to various combinations of loads. Proper attempt has been made in this study to analyze the beam element and to find out its strength. In this study, beam of size 700  150  150 has been casted using proper mix design. Three different types of beams are casted such as beam with a notch, normal beam, and one more normal beam to which notch will be generated after curing period (28 days). After the completion of curing period, the beams are subjected to two points loading and the load deflection data has been noted. It is very important to note down the first crack load data. And crack pattern has been observed.


Description

Civil engineering structures such as buildings, highways, bridges, airport runways and offshore structures are eventually subjected to loading. Concrete is one of the most important materials used in the construction; it helps by withstanding a large number of repeated loads (cyclic load). These cyclic loads develop fatigue failure in the structures, which in turn changes the material characteristics such as durability, stiffness and toughness. The failure of the structure starts with initial cracks. Concrete contains many flaws such as pre-cracked aggregates, air pockets and improper bond between matrix and aggregates. Fatigue rapture is the main reason for the failure of concrete. During the service life of structures such as dams, bridges, flyovers and buildings, their strength decreases gradually as time passes due to corrosion, ageing, chemical attack and long-term deformations of structural elements, hence it is very important to evaluate the residual strength of such structures and their lifespan so that proper strengthening technology can be adopted in order to maintain their service life without failure or without causing any damage to lives. Cracks develop in the structures even before loading is initiated.


Keywords

Notched beams, Damage, Cracks, RCC beams

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