Khair Bsisu

University of Jordan | UJ · Department of Civil Engineering

To examine the effects of elevated temperature on recycled aggregate concrete as well as recycled aggregate concrete beams made using new and reused steel reinforcement, four concrete mixes with different recycled aggregate replacement ratios (0%, 25%, 50%, 75%) and two types of steel reinforcement (new steel and reused steel reinforcement) were us...

Marl is a general term that refers to any material, whether soil or rock-like, that contains 35-65 percent calcium carbonate and the rest of clay fraction (Al-Amoudi et al., 2010; Yong & Ouhadi, 2007) this formation is a rock-like when dry, never the less, it is a soft soil-like when moist. In general, high deformation and settlement are the main p...

The construction industry and civil engineering contribute largely to the Jordanian GDP (gross domestic product). The lockdown due to the COVID-19 pandemic has caused all civil engineering design offices and ongoing construction projects to terminate abruptly all onsite construction work and to convert to work from home for the design engineers. Th...

To the Editor We read with great interest the article titled “Head and Neck Injuries Associated With Cell Phone Use” by Povolotskiy el al,¹ in which they concluded that many cell phone–related injuries to the head and neck were associated with common daily activities, such as texting while walking, and that some injuries bear a risk of long-term co...

ABSTARCT This study aims at investigating the nonlinear behavior of adequate reinforced concrete frames with semi-rigid connections under high lateral load and comparing them to the moment resisting systems. These two systems were compared based on their energy dissipation capacity, inter-storey drift ratio, force distribution, ductility, failure m...

Electric vehicles retailers are suffering from unexpected difficulties in marketing due to the high taxes and customs imposed on the sale of such vehicles, which lead to a direct loss of millions of Jordanian dinars. In this paper, the barriers and challenges were investigated with vehicle showroom owners and potential vehicle buyers in Amman, Jord...

Electric vehicles retailers are suffering from unexpected difficulties in marketing due to the high taxes and customs imposed on the sale of such vehicles, which lead to a direct loss of millions of Jordanian dinars. In this paper, the barriers and challenges were investigated with vehicle showroom owners and potential vehicle buyers in Amman, Jord...

The properties of reinforced concrete beams strengthened using carbon fiber-reinforced plastic (CFRP) sheets have been thoroughly studied, establishing a firm knowledge of analysis and design procedures. Snapping of CFRP sheets during loading is a typical failure mode in such strengthened structures. Applying epoxy resin to bond CFRP sheets to the...

Significant technological advances have been achieved in the design and building construction of steel and glass in the last two decades. The metal glass support frame has been replaced by further sophisticated echnological solutions, for example, the point fixed glazing systems. The minimization of the visual mass has reached extensive possibiliti...

Significant technological advances have been achieved in the design and building construction of steel and glass in the last two decades. The metal glass support frame has been replaced by further sophisticated technological solutions, for example, the point fixed glazing systems. The minimization of the visual mass has reached extensive possibilit...

This study presents an analytical investigation of three retrofitting techniques, using finite element analysis aimed at improving the behavior of reinforced concrete beam-column joints to enhance the performance and load carrying capacity of structures. The three suggested retrofitting techniques presented are; reinforced concrete jacketing, steel...

The construction of building has an increased focus towards the issues of structural safety and green building requirements. The natural disasters such as earthquakes and storms necessitate the safe and secure structures of the building. Also, the environmental impacts and increase in the carbon emissions require the building of energy efficient st...

In this study, a total of eleven under-reinforced beams, ten of which strengthened with FRP of different widths and different numbers of layers, are fitted with electronic strain gauges on the top concrete fiber, the reinforcing steel and the FRP material. Strains and deflection at mid-span were recorded for each load increment. The data was report...

Experimental investigations indicate that the bearing strength of concrete is increased by the confinement effect provided by the enveloping concrete. Various empirical formulas have been used in international codes relating the bearing strength of concrete to the compressive strength and the ratio of the total surface area to load bearing area (A/...

Reinforced concrete beams are commonly retrofitted using Carbon Fiber Reinforced Plastic (CFRP) plates as the technique is both inexpensive and unobtrusive. However, tests have shown that CFRP plates tend to debond at low strains, which can severely limit the ductility. Structural strengthening of beams subjected to flexure can be achieved using di...

In this paper the nature of bond stresses are studied for different regions of reinforced concrete elements subjected to flexure and shear, various literature articles on the subject are reviewed and the seismic effect for bond and development length is discussed.

A 6-story R.C. office building had a plan typical of a frame design, but a beam column design procedure was used. Working Stress Design method was used. Severe cracking ranging in size from 5 – 20 mm. A comprehensive study of the design drawings, site and laboratory testing was conducted on structural members to determine the cause and suggest the...

Structural strengthening of beams subjected to flexure can be done by more than one method, both the CFRP laminates and the Light Gauge Galvanized Steel Plat methods are tested to compare the ductility of members designed using ACI-440 to reach the same strength.

A 6-story R.C. office building had a plan typical of a frame design, but a beam column design procedure was used. Working Stress Design method was used. Severe cracking ranging in size from 5 – 20 mm. A comprehensive study of the design drawings, site and laboratory testing was conducted on structural members to determine the cause and suggest the...