Lokeswari, M. <br/><br/>
Study on effect of light weight aggregates on structural performance of concrete 

 - Vol. 48, Issue 04 
 - Chennai  CSIR- Strctural Engineering research Centre  2021 
 - 274-283p. 
<br/><br/> The present work aims to study the effect of light weight aggregates<br/>on structural performance of concrete. In this study, experiments were<br/>conducted to study modulus of elasticity, stress-strain behaviour, bond<br/>strength, flexure behaviour at different span to depth ratios on light<br/>weight and normal concrete specimens for appropriate comparison.<br/>For the tested specimens, significantly lower modulus of elasticity was<br/>observed for light weight concrete than normal concrete. Light weight<br/>concrete was found to be more brittle in nature i.e., the specimen<br/>failed rapidly after reaching peak stress. From the pull-out test, the<br/>bond strength of light weight concrete was found to be about same as<br/>that of normal concrete. For the both flexure dominated and shear<br/>dominated beams, significant difference was not observed between<br/>strength and stiffness of two types of concrete. The comparison<br/>between experimental and ACI 318-2019 theoretical short-term<br/>deflections showed that the equation gives lower values for both<br/>lightweight concrete and normal concrete beams. The work does not<br/>aim to arrive at generalized conclusions but to create confidence in<br/>engineering community for the promotion of structural grade light<br/>weight concrete and the scope of this study is limited to M40 grade<br/>concrete 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Civil Engineering
<br/><br/><label>Subjects--Index Terms: </label>Deflection Fly Ash Aggregates Modulus of Elasticity