Effect of modulus of elasticity and thickness of the CFRP plate on the performance of a novel anchor for structural retrofitting and rehabilitation applications

Mohee, Faizul M.; Al-Mayah, Adil

doi:10.1016/j.engstruct.2017.09.057

Cited by 24 publications

(4 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Arsenic contamination can also permeate between the soils, groundwater system and rock structures, therefore, a thorough understanding of the porous rock and soil structures [11][12][13][14] in Bangladesh are needed. Rapid structures to support the water treatment systems composed of carbon fibre reinforced fibre structures [15][16][17][18] can also be used. Furthermore, the impacts of climate change are likely to exacerbate the challenge of Arsenic contamination in soils [29][30][31][32][33].…”

Section: A Justification Of the Studymentioning

confidence: 99%

Detection and Mapping of Arsenic Contamination in Bangladesh

Basak¹,

Rashid²,

Mohee³

et al. 2020

Progress in Canadian Mechanical Engineering. Volume 3

View full text Add to dashboard Cite

Arsenic contamination in the groundwater of Bangladesh is of major concern due to the high reliance on groundwater for drinking water, large levels of groundwater extraction for agricultural purposes and the impact of climate change depleting the groundwater table. Although the Sitakunda Distract was earlier considered to be free from Arsenic contamination, recent experimental data shows the Sitakunda District has high Arsenic concentrations. The objective of this work was to identify the Arsenic affected wells in the Sitakunda District, Chittagong, map them in QGIS mapping software and updated Bing imagery using GPS coordinates from GPS Devices and to explore the potential relationship between the present data with past data. The Sitakunda District region wells examined in this study determined the Arsenic concentration to be in the range of 100-500+ ppb which is much higher than the World Health Organization limits (10 ppb) and Bangladesh limit (50ppb). The generated maps in QGIS showed the randomly selected tested tubewells with satellite imagery and their corresponding elevation, yet no precise correlation between Arsenic contamination and land elevation was determined. The results of this study and corresponding satellite map has the potential to identify Arsenic contaminated tubewells for the community members. Future investigations will explore the development of suitable low-cost water treatment technologies to remove the Arsenic contamination.

show abstract

Section: A Justification Of the Studymentioning

confidence: 99%

Detection and Mapping of Arsenic Contamination in Bangladesh

Basak¹,

Rashid²,

Mohee³

et al. 2020

Progress in Canadian Mechanical Engineering. Volume 3

View full text Add to dashboard Cite

show abstract

“…Fiber-reinforced composites are frequently used in structural components due to their high strength-to-weight ratio and stiffness properties. Laminated composite plates, in particular, have been widely applied in civil, mechanical, aerospace, and marine engineering [1][2][3][4][5]. A novel application of composite laminates has been in the field of structural retrofitting, particularly the retrofitting of reinforced concrete and masonry structures, as presented by Mohee et al [3,4] and Noor-E-Khuda et al [5].…”

Section: Introductionmentioning

confidence: 99%

“…Laminated composite plates, in particular, have been widely applied in civil, mechanical, aerospace, and marine engineering [1][2][3][4][5]. A novel application of composite laminates has been in the field of structural retrofitting, particularly the retrofitting of reinforced concrete and masonry structures, as presented by Mohee et al [3,4] and Noor-E-Khuda et al [5]. Because of the advantages of using laminated composites in structural applications, their performance has been researched extensively.…”

Section: Introductionmentioning

confidence: 99%

Metaheuristic Optimization of Laminated Composite Plates with Cut-Outs

et al. 2021

View full text Add to dashboard Cite

The stacking sequence optimization of laminated composite plates while maximizing the structural performance or minimizing the weight is a subject investigated extensively in the literature. Meanwhile, research on the optimization of laminates with cut-outs has been relatively limited. Cut-outs being an indispensable feature of structural components, this paper concentrates on the stacking sequence optimization of composite laminates in the presence of circular cut-outs. The buckling load of a laminate is used as a metric to quantify the structural performance. Here the laminates are modeled as carbon fiber-reinforced composites using the finite element analysis software, ABAQUS. For the optimization, the widely used harmony search algorithm is applied. In terms of design variables, ply thickness, and fiber orientation angles of the plies are used as continuously changing variables. In addition to the stacking sequence, another geometric variable to consider is the aspect ratio (ratio of the length of the longer sides to the length of the shorter sides of the plate) of the rectangular laminates. The optimization is carried out for three different aspect ratios. It is shown that, by using dispersed stacking sequences instead of the commonly used 0°/±45°/±90° fiber angle stacks, significantly higher buckling loads can be achieved. Furthermore, changing the cut-out geometry is found to have a significant effect on the structural performance.

show abstract

“…[25,26] proposed an anchorage method that combines flat plate anchorage and U type CFRP sheets, and concrete reinforcement tests were conducted, but the tension magnitude of CFRP plate is still restricted at a low level. Ye et al [27,28] and Mohee et al [29,30] placed a tapered wedge inside a plate press fit-type anchor and achieved favorable anchorage performance without using any binding agent to clamp the CFRP plates. However, this anchorage system was not convenient for engineering applications due to its large size.…”

Section: Introductionmentioning

confidence: 99%

Method of Designing a Friction-Based Wedge Anchorage System for High-Strength CFRP Plates

et al. 2021

View full text Add to dashboard Cite

The cables of high-strength carbon fiber reinforced polymer (CFRP) plates are starting to be applied to large spatial structures. However, their main anchorage systems rely on the adhesive force, which entails risks to their integrity resulting from aging of the binding agent. In this study, a friction-based wedge anchorage system was designed for CFRP plates. The working mechanism of the proposed anchorage system was explored both theoretically and experimentally. The anti-slip mechanism and condition of CFRP plates were formulated so that the equivalent frictional angle of the contact surface between a CFRP plate and wedges must not be smaller than the sum of the dip angle of the wedge external conical surface and the frictional angle between the wedges and barrel. An analysis of the stress distribution in the anchorage zone of the CFRP plate was conducted using the Tsai-Wu failure criterion, which concluded that the compressive stresses should be reduced on the section closer to the load-bearing end of the anchorage system. Furthermore, the anchorage efficiency coefficient was proposed, which depends on stress concentration coefficients, plate thickness, length of anchorage zone, dip angle of wedge external conical surface, and its frictional angle. Then, it was determined that the minimum length of an anchorage zone for the CFRP plates with various specifications should be at least 49 times larger than the CFRP thickness. A finite element analysis and static tensile tests on six specimens were carried out. The experimental results revealed that the anchorage efficiency coefficient of the optimized anchor reached 97.9%.

show abstract

Effect of modulus of elasticity and thickness of the CFRP plate on the performance of a novel anchor for structural retrofitting and rehabilitation applications

Cited by 24 publications

References 18 publications

Detection and Mapping of Arsenic Contamination in Bangladesh

Detection and Mapping of Arsenic Contamination in Bangladesh

Metaheuristic Optimization of Laminated Composite Plates with Cut-Outs

Method of Designing a Friction-Based Wedge Anchorage System for High-Strength CFRP Plates

Contact Info

Product

Resources

About