Study on effect of light weight aggregates on structural performance of concrete
By: Lokeswari, M
.
Contributor(s): Sinoy, I.J | Govindraj, V.
Publisher: Chennai CSIR- Strctural Engineering research Centre 2021Edition: Vol. 48, Issue 04.Description: 274-283p.Subject(s): Civil Engineering | Deflection | Fly Ash Aggregates | Modulus of Elasticity
In:
Journal of structural engineering (JOSE)Summary: The present work aims to study the effect of light weight aggregates
on structural performance of concrete. In this study, experiments were
conducted to study modulus of elasticity, stress-strain behaviour, bond
strength, flexure behaviour at different span to depth ratios on light
weight and normal concrete specimens for appropriate comparison.
For the tested specimens, significantly lower modulus of elasticity was
observed for light weight concrete than normal concrete. Light weight
concrete was found to be more brittle in nature i.e., the specimen
failed rapidly after reaching peak stress. From the pull-out test, the
bond strength of light weight concrete was found to be about same as
that of normal concrete. For the both flexure dominated and shear
dominated beams, significant difference was not observed between
strength and stiffness of two types of concrete. The comparison
between experimental and ACI 318-2019 theoretical short-term
deflections showed that the equation gives lower values for both
lightweight concrete and normal concrete beams. The work does not
aim to arrive at generalized conclusions but to create confidence in
engineering community for the promotion of structural grade light
weight concrete and the scope of this study is limited to M40 grade
concrete
| Item type | Current location | Call number | Status | Date due | Barcode | Item holds |
|---|---|---|---|---|---|---|
Articles Abstract Database
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School of Engineering & Technology (PG) Archieval Section | Not for loan | 2022-0268 |
The present work aims to study the effect of light weight aggregates
on structural performance of concrete. In this study, experiments were
conducted to study modulus of elasticity, stress-strain behaviour, bond
strength, flexure behaviour at different span to depth ratios on light
weight and normal concrete specimens for appropriate comparison.
For the tested specimens, significantly lower modulus of elasticity was
observed for light weight concrete than normal concrete. Light weight
concrete was found to be more brittle in nature i.e., the specimen
failed rapidly after reaching peak stress. From the pull-out test, the
bond strength of light weight concrete was found to be about same as
that of normal concrete. For the both flexure dominated and shear
dominated beams, significant difference was not observed between
strength and stiffness of two types of concrete. The comparison
between experimental and ACI 318-2019 theoretical short-term
deflections showed that the equation gives lower values for both
lightweight concrete and normal concrete beams. The work does not
aim to arrive at generalized conclusions but to create confidence in
engineering community for the promotion of structural grade light
weight concrete and the scope of this study is limited to M40 grade
concrete
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