Improvements of reinforced concrete beams against the impact of torsional forces are among the most researched issues in construction studies. In this paper, repairing and strengthening reinforced concrete beams using...
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This study aims to explore the flexural behavior of crushed clay brick (CCB) lightweight concrete (LWC) beams strengthened with rubberized strain-hardening cementitious composite reinforced with glass fiber textile me...
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The existence of diverse modeling approaches for masonry-infilled frames causes uncertainty among practicing engineers when seeking a definitive model for their design practice. This paper presents a practical and sim...
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One issue with layer application of roller compacted concrete(RCC)is the development of cold joints,which can cause damage to RCC *** this study,fly ash was used in place of 0%,20%,40%,and 60%of the cement or aggregat...
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One issue with layer application of roller compacted concrete(RCC)is the development of cold joints,which can cause damage to RCC *** this study,fly ash was used in place of 0%,20%,40%,and 60%of the cement or aggregate to examine the impact of interlayer cold joint formation on RCC *** promote cold joint formation,the second layer was placed and compacted with a delay of 0,60,120,or 180 min after the first *** methods were tried for preventing cold joints from forming:one was to apply a bedding mortar to the interlayer,another was to add a set retarder admixture,and the third was to spray an adhesion-enhancing chemical additive on the surface of the first *** on the 28 d specimens’compressive and splitting-tensile strengths as well as the depth of water penetration under pressure,the most effective method was found to be applying interlayer bedding *** 180 min delayed layer castings,the splitting-tensile and compressive strengths of the control samples decreased by 31%and 17%,respectively,while the strengths of mixtures applying interlayer bedding mortar decreased by 9%and 10%.In addition,bedding mortar treatment decreased the water permeability by 59%compared to the *** cold joint decreased all mixtures’moduli of elasticity,regardless of the age of the *** the interlayer delay was 60 min,the modulus of elasticity decreased by 1%–4%.It was between 2%and 14%,and between 10%and 24%at 120 and 180 min for the interlayer *** longer the delay in placing the second RCC layer,the more detrimental the effect of the cold *** effect was most noticeable on mechanical and permeability properties tested with applied load or water pressure parallel to the cold joint,such as flexural and splitting tensile strengths and water penetration depth under pressure.
Digital fabrication techniques,in recent decades,have provided the basis of a sustainable revolution in the construction ***,selecting the digital fabrication method in terms of manufacturability and functionality req...
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Digital fabrication techniques,in recent decades,have provided the basis of a sustainable revolution in the construction ***,selecting the digital fabrication method in terms of manufacturability and functionality requirements is a complex *** paper presents alternatives and criteria for selection of digital fabrication techniques by adopting the multi-criteria decision-making *** alternatives considered in the study are concrete three-dimensional(3D)printing,shotcrete,smart dynamic casting,material intrusion,mesh molding,injection concrete 3D printing,and thin forming *** criteria include formwork utilization,reinforcement incorporation,geometrical complexity,material enhancement,assembly complexity,surface finish,and build *** demonstrates different multi-criteria decision-making techniques,with both subjective and objective weighting *** given ranking is based on the current condition of digital fabrication in the construction *** study reveals that in the selection of digital fabrication techniques,the criteria including reinforcement incorporation,build area,and geometrical complexity play a pivotal role,collectively accounting for nearly 70% of the overall *** the evaluated techniques,concrete 3D printing emerged as the best performer,however the shotcrete and mesh molding techniques in the second and third positions.
Stabilization of soil using cement can increase the bearing capacity, compaction, and strength characteristics. However, limited research has been conducted on cemented clayey sand, and there is a lack of knowledge of...
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Traditional evaluation of reinforced rebar in concrete elements involves destructive methods that may harm the *** paper introduces a framework that adopts non-destructive techniques to classify rebar in reinforced co...
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Traditional evaluation of reinforced rebar in concrete elements involves destructive methods that may harm the *** paper introduces a framework that adopts non-destructive techniques to classify rebar in reinforced concrete *** framework integrates Ground Penetrating Radar(GPR)with deep learning to automate rebar detection and analysis in concrete *** framework consists of four stages:Data sets Creation,Data sets Processing,Steel Rebar Detection Model,and Transfer *** deep learning models are tested to choose the highest-performing *** YOLO v8 model outperforms Faster R-CNN and YOLO *** selected YOLO v8 model is trained on experimental and site data and then tested on real data from the building to validate the model’s accuracy and ability to classify rebar *** GPR with deep learning can potentially improve the accuracy and efficiency of rebar detection in structural assessments.
Producing a structural design that fulfills strength, serviceability, and design code requirements with the least cost is the goal of every engineer. This paper aims to apply genetic algorithms to achieve the optimum ...
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Studying flat slabs subjected to high punching shear stresses at edge columns is crucial due to the extra punching shear stresses caused by the unbalanced moments. This paper endeavors to experimentally study the perf...
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A novel hybrid buckling-restrained brace (HBRB) configuration is introduced in this study to address the inherent limitations of conventional buckling-restrained braced frames (BRBFs). The HBRB comprised parallel stee...
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