Munaf A. Al-Ramahee

• Ph.D.
• Faculty Member at University of Al-Qadisiyah

To ensure sustainability, all types of building structures should be kept in accepted condition throughout their life of service. Rehabilitation has been the subject of extensive research recently because of rising spending on construction and maintenance of constructed infrastructure. The most recent methods to reinforce current reinforced concret...

Although many treatment techniques has been implemented to enhance the performance of recycled aggregate (RA), its characteristics is still lower than that of natural aggregate (NA), and therefore, further treatment is needed in this regard. An experimental investigation to improve the mechanical performance of RA self-compacting concrete (SCC) was...

The efficiency of laminated plates under in-plane dynamic loading has been investigated and this paper presents it. In order to achieve geometric nonlinearity by using eight-node isoparametric quadrilateral elements with nine degrees of freedom per node, a laminated plate using variable fiber spacing (VFS) was modeled numerically. To solve the dyna...

The impact of steel and polypropylene fibers on the performance of lightweight self-compacting concrete (LWSCC) beams was investigated in this study. Seven beams with various parameters were cast and tested. Partial (50%) and full (100%) replacement of coarse aggregate with lightweight aggregate expanded clay (LECA) were considered. In addition, a...

In this research, the effect of using steel fiber and polypropylene on the behavior of the lightweight self-compacting concrete (LWSCC) beams have been studied. Seven beams have been cast with different parameters and compared. Two ratios of coarse aggregate replacement with light-weight aggregate expanded clay (LECA) have been considered partially...

This paper presented a strengthening technique for enhancement reinforced concrete (RC) slab-column connection behavior using steel plates and steel stiffeners. A bi-axial load was applied with an eccentricity of 150 mm in both x and z directions. Four specimens with dimensions of 1,600 × 1,600 × 100 mm were tested in this research. The steel plate...

Different techniques were employed for the passage of different utilities through structural elements. The reduction of the overall building weight was the main concern that needs to be achieved, especially for a multistory building. It can be done with the eliminating of a suspended ceiling with a portion of the beam’s weight by taking the advanta...

The punching shear strength of reinforced concrete (RC) flat slab is the main concern in the structural behavior. This study presents a strengthening technique for improving punching shear resistance in RC two-way flat slabs using RC column capital. Two sizes of column capital were used (600 × 600 and 800 × 800 mm), and the influence of column capi...

The effect of retarding admixture on the fresh and hardened behaviour of different types of cement mortars and pastes when using a retarding admixture was investigated in this study. The types of cement used are; White cement (WhC), Ordinary Portland cement (OPC) and Sulphate Resistant Portland cement (SRC). Different cement mortar and paste mixes...

This research presents an experimental program to study the effect of using angle shear connectors instead of the headed stud on the flexural behavior of composite beams under negative bending moment (NBM). Both the angle and headed stud shear connectors used in this study have the same cross-sectional area. Five composite beams were casted and tes...

A new experimental and numerical study was presented to investigate the effect of downstream spillway face's angle on the stilling basin's energy dissipation (ED) efficiency. Six composed physical plywood models with downstream slopes of spillway face ranged from 30 o to 55 o for the spillway was built and used in the experimental tests. The hydrau...

A new modification of Branson’s model was proposed to consider the variation of some parameters such as the type of concrete (normal, high strength), loading conditions (three-point loading, four-point loading, and uniform load), shear deformation (thickness to length ratio), and type of reinforcement (steel and fiber reinforced polymer (FRP) reinf...

A new lightweight, low-profile composite deck system is presented that was fabricated using vacuum-assisted resin transfer molding. The deck in this system is composed of ultrahigh-performance concrete (UHPC) for high compressive strength and durability, carbon-fiber-reinforced polymer (CFRP) for high tensile strength, and glass-fiber-reinforced po...

Nonlinear Time History Analysis of Ordinary Standard Bridges was a joint effort by research teams from Oregon State University and the University of Central Florida. The objectives of this study were two-fold: 1) To assess the ability of disparate software packages, namely CSiBridge and OpenSees, to give similar results for nonlinear time history a...

A new lightweight, low-profile composite deck system is presented that was fabricated using vacuum-assisted resin transfer molding. The deck in this system is composed of ultrahigh-performance concrete (UHPC) for high compressive strength and durability, carbon-fiber-reinforced polymer (CFRP) for high tensile strength, and glass-fiber-reinforced po...

Movable bridges often include open grid steel deck for its light weight and ease of installation. These decks, however, suffer from poor rideability and high maintenance costs. The primary objective of this research project was to search for a new generation of lightweight solid decks that address these issues. Alternative deck systems, including u...

The influence of dowel action is usually ignored during normal reinforced concrete beam designs since vertical shear reinforcing bars always offer significant shear resistance. However, for ultra-high performance concrete (UHPC) beams without shear reinforcement, the dowel action contribution to the shear strength becomes considerable and is import...

In the present study, the optimum hydraulic and structural design of inverted siphon has been studied. Modified Hooke and Jeeves method considered in the present study and some modifications were doing. These modifications are:1) modification on the assumed initial base points, 2) modification on the value of step length, 3) modification on the val...

A free vibration analysis of a curved plate cellular structure is presented. The flexibility matrices of both curved and straight members were used in the analysis; also a lumped mass matrix having the same number of equations as the consistent mass matrix was adopted herein. Jacobi's iterative method was used to solve the Eigenvalue problems. The...