Flexural Behavior of Lightweight Self-Consolidating Concrete Beams Strengthened with Engineered Cementitious Composite

2021 ◽  
Author(s):  
Tayseer Z. Batran ◽  
Mohamed K. Ismail ◽  
Assem A. A. Hassan
Keyword(s):  
Concrete Beams ◽  
Flexural Behavior ◽  
Cementitious Composite ◽  
Self Consolidating Concrete ◽  
Engineered Cementitious Composite

scholarly journals Flexural Performance of Hybrid Engineered Cementitious Composite Layered Reinforced Concrete Beams

2018 ◽  
Author(s):  
Ammapalayam Ramasamy Krishnaraja ◽  
Shanmughasundaram Kandasamy
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beams ◽  
Volume Fraction ◽  
Reinforced Concrete Beams ◽  
Flexural Behavior ◽  
Uniaxial Tensile ◽  
Fibre Reinforcement ◽  
Cementitious Composite ◽  
Engineered Cementitious Composite ◽  
Flexural Performance

This paper presents the experimental investigation to evaluate the flexural performance of newly developed hybrid Engineered Cementitious Composite (ECC) layer at tension zone around the main reinforcement of beam. Four different ECC mixes are used in the beam to evaluate the flexural performance, hybrid ECC based on the low modulus poly vinyl alcohol (PVA) and high modulus steel short random fibre reinforcement. The aim of hybridation is to improve the flexural, energy absorption and ductility performance of reinforced concrete beams. In addition to the compressive strength, young’s modulus, uniaxial tensile strength and bond strength of ECC mixes are determined. ECC with PVA fibre with 2.0% volume fraction mix is kept as reference mix, hybridation is made with PVA (1.35%) and steel (0.65%), PVA (1.00%) and steel (1.00%) and finally with PVA (0.65%) and steel (1.35%). This hybridization has a remarkable achievement in mechanical properties and in the flexural behavior in ECC layered RC beam. From the results, it has been observed that mono fiber ECC reinforced with PVA of 2.0% and hybrid fiber ECC reinforced with 1.35 % of PVA fiber and 0.65% of steel fiber has reasonable flexural characteristics than the conventional beam.

scholarly journals Axial Strength Of Lightweight Self-Consolidating Concrete Columns With Engineered Cementitious Composite

2021 ◽  
Author(s):  
Sandeep Parajuli
Keyword(s):  
Axial Load ◽  
Failure Modes ◽  
Load Capacity ◽  
Absorption Capacity ◽  
Normal Weight ◽  
Cementitious Composite ◽  
Concrete Core ◽  
Self Consolidating Concrete ◽  
Engineered Cementitious Composite ◽  
Axial Strength

Axial load behavior of confined columns with engineered cementitious composite (ECC) wrapping was investigated through experimental, analytical and finite element (FE) investigations. The variables in the study were: geometry (cylindrical and rectangular), presence or absence of longitudinal and tie reinforcement, ECC wrap thickness, types of concrete core (lightweight and normal weight self-consolidating concrete) and type of loading (applied through both core and wrap or core only). The effect of these variables on axial load-deformation response, strain characteristics, failure modes, ductility, energy absorption capacity and axial strength were evaluated. The confined concrete strengths predicted from existing analytical and developed FE models were found to be in good agreement with those of experiments. The axial load capacity and ductility were increased for columns with highest ECC wrap thickness (50 mm) while thinner wrap increased stiffness instead of ductility. Canadian code conservatively predicted axial strength of columns having increased thickness of ECC wrap.

scholarly journals Axial Strength Of Lightweight Self-Consolidating Concrete Columns With Engineered Cementitious Composite

2021 ◽  
Author(s):  
Sandeep Parajuli
Keyword(s):  
Axial Load ◽  
Failure Modes ◽  
Load Capacity ◽  
Absorption Capacity ◽  
Normal Weight ◽  
Cementitious Composite ◽  
Concrete Core ◽  
Self Consolidating Concrete ◽  
Engineered Cementitious Composite ◽  
Axial Strength

Axial load behavior of confined columns with engineered cementitious composite (ECC) wrapping was investigated through experimental, analytical and finite element (FE) investigations. The variables in the study were: geometry (cylindrical and rectangular), presence or absence of longitudinal and tie reinforcement, ECC wrap thickness, types of concrete core (lightweight and normal weight self-consolidating concrete) and type of loading (applied through both core and wrap or core only). The effect of these variables on axial load-deformation response, strain characteristics, failure modes, ductility, energy absorption capacity and axial strength were evaluated. The confined concrete strengths predicted from existing analytical and developed FE models were found to be in good agreement with those of experiments. The axial load capacity and ductility were increased for columns with highest ECC wrap thickness (50 mm) while thinner wrap increased stiffness instead of ductility. Canadian code conservatively predicted axial strength of columns having increased thickness of ECC wrap.

Comparison of shear behaviour of engineered cementitious composite and normal concrete beams with different shear span lengths

2016 ◽  
Vol 68 (5) ◽  
pp. 217-228 ◽  
Author(s):  
Ahmed Alyousif ◽  
Ozgur Anil ◽  
Mustafa Sahmaran ◽  
Mohamed Lachemi ◽  
Gurkan Yildirim ◽  
...  
Keyword(s):  
Concrete Beams ◽  
Shear Behaviour ◽  
Cementitious Composite ◽  
Normal Concrete ◽  
Engineered Cementitious Composite ◽  
Shear Span
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