Haitham Hassan Muteb
@uobabylon.edu.iq
Civil Engineering Department / College of Engineering
University of Babylon
RESEARCH, TEACHING, or OTHER INTERESTS
Civil and Structural Engineering, Engineering, Mechanics of Materials, Computational Mechanics
Scopus Publications
Scopus Publications
Mustafa S. Salah and Haitham H. Muteb
Springer Science and Business Media LLC
Mayadah W. Falah, Haitham H. Muteb, and Zainab Al-Khafaji
Springer Science and Business Media LLC
Maher K. Abbas, Haitham H. Muteb, and Samer A. Al-Mashhadi
Springer Science and Business Media LLC
Mustafa S. Salah and Haitham H. Muteb
AIP Publishing
Ahmed Mohammed Abd Al-Mohsen and Haitham Hassan. Muteb
IOP Publishing
Abstract With the development of life and its requirements increasing, it has become necessary to find means that reduce the time to meet them, and one of these means is high-speed trains. Many previous studies have dealt with different properties affecting the dynamic behavior of railway bridges. In this research, the effect of changing the structural material of part of the main bridge structure on its dynamic behavior were be studied. Two types of bridges were studied. The first is the steel-girder bridge, and the second is the polygonal concrete bridge. The bridge modeling was done through the program SAP2000 and the structural analysis of the study model was done by using the finite element method. Material and mechanical properties from laboratory experiments were used for previous studies. The results for the two dynamic behavior parameters that were tested showed larger values in the polygonal model of the bridge. It increases in the steel beam model by 59% for vertical displacement and by 45% for vertical acceleration. The vertical displacement values were within the limits of the international standard L/600, and the vertical acceleration was within the limits of the European standard 3.5 g. The best design for each speed should be determined by conducting more study, which should include testing models at various speeds.
Mayadah W. Falah and Haitham Hassan Muteb
Walter de Gruyter GmbH
Abstract The method for soil preservation has been completely revolutionized thanks to internally reinforced walls. Although such walls have gained significant awareness in many parts of the globe, this construction technique has only been extensively utilized lately. The primary reason may be that the costs associated with constructing such walls are likely higher than those associated with constructing conventional externally reinforced walls. The construction methods involved may be excessively time demanding. The term “mechanically stabilized Earth systems” refers to an internally stabilized fill structure that is made up of an unreinforced concrete levelling pad, precast concrete face panel units and coping units, selected granular backfill (reinforced backfill), a subsurface drainage system, and reinforcing elements (high-strength, metallic, or polymeric inclusions) to create a reinforced soil mass which is utilized to stabilize the backfill. The purpose of this article is to provide a historical overview of the mechanically stabilized Earth retaining walls by focusing on the necessary aspects required for their design, as well as to discuss how the change of the characteristics of the soil influences lateral displacements and stress responses that occur under various ground movements. The results of this study lead to the conclusion that the dynamic behaviour of the cantilever wall is very sensitive to the frequency characteristics of the seismic record and the interaction between the soil and the structure.
Mays A. Hamad, Haitham H. Muteb, and Mustafa S. Salah
Springer Science and Business Media LLC
Mays A. Hamad and Haitham H. Muteb
Springer Science and Business Media LLC
Haitham H. Muteb and Mays A. Hamad
AIP Publishing
Haitham Hasan Muteb Aldaami and Jenan N. Almusawi
AIP Publishing
Mustafa S. Salah, Haitham H. Muteb, and Mays A. Hamad
Springer Science and Business Media LLC
Mustafa S. Salah and Haitham H. Muteb
Springer Science and Business Media LLC
Rana F. Yousef, Haitham H. Muteb, and Ayoob A. Ibrahim
Walter de Gruyter GmbH
Abstract This article illustrates the specifications required to accurately design, specify, and install embedded anchor bolts between old and new concrete composite specimens for concrete repair or reinforcing of collapse concrete a research hotspot. The concrete slabs are facing a major challenge with deterioration, especially for reinforcement corrosion caused mainly by severe cycles of various chemical attacks. In this research, the impact of using contact plates between composite specimens was investigated by testing grouped specimens, thereby the models were divided into two groups, which tested under static load. The findings of a series of tests conducted to evaluate the structural behavior of shear connections (by pushout test) by including many parameters; the diameter (8, 12 and 16 mm), bounding between different compressive strength should be changed [normal concert (NC) mixes , ultra-high performance fiber concrete (UHPFC), and self-compacting mortar (SCM)]. Also, the embedded length of bolts was varied from 70, 130, to 190 mm. These parameters were studied individually in two groups. The first group was without contact plate and the second group was with contact plate. Experimental findings were obtained and reported, including the failure modes, maximum resistance, slippage capacity, and load–slip characteristic responses of the connections. Based on the obtained data, a relationship between the studied parameters was investigated. Experimental findings showed that the ultimate strength of rough surface specimens (without contact plate) was about 31% greater than that of smooth surface specimens (with contact plate), and obviously, all pushout specimens failed due to stud shank failure.
Jenan N. Almusawi and Haitham Hasan Muteb Aldaami
Elsevier BV
Rana F. Yousef, Muna M. Al-Rubaye, and Haitham H. Muteb
Walter de Gruyter GmbH
Abstract For utility of economical and practical construction, precast concrete is used due to its advantages such as reliability, durability, and higher quality. The appropriate selection of connection between the precast elements can have a significant influence on both the structural performance and long-term durability of such precast system. In this study, the effects of different connecting techniques on the performance of the precast composite flanged beams were experimentally and numerically investigated. The experimental program included testing up to failure under flexural loading conditions three groups of composite specimens: reference group, mechanical connecting group and chemical connecting group. The numerical assessment was done by using a finite element analysis to get a better insight and analyze the response of tested composite beams that available in the software package ABAQUS. The experimental results showed the advantageous effects of using mechanical connecting technique, as evident from improvement of the ultimate capacity or ductility of the precast composite beams. The results also showed that the predicted structural behavior using finite element analysis in terms of ultimate carrying loads, load-midspan deflection curves and crack patterns of the composite beams was in good agreement with the experimental data.
Haitham H. Muteb and Mayadah W. Falah
IOP Publishing
Internally stabilized walls have entirely transformed the soil preservation mechanism. While such walls have achieved widespread recognition in many areas of the world, such a structure is widely adopted recently. The key explanation might be that such walls are likely to be more costly than traditional externally reinforced walls and that the construction processes included could be too time-consuming. This article provides an overview of the background, styles, advantages, and disadvantages of Mechanically stabilized earth (MSE) wall requirements. For contrast, traditional construction samples of externally and internally supported walls have been given, including metal strip reinforcement walls, reinforcement concrete cantilever retaining wall, geotextile reinforcement walls, and grounded earth walls of various heights.
Harith Al-Salman and Haitham H. Muteb
IOP Publishing
Abstract Spaceframe is a structural roofing system that generally made of steel tubes connected by ball joints which is called MERO jointed space frame structures and mostly used for covering large space area. In addition, some advantages could be obtained with such a system, for example lower weight, high strength-to-weight ratio and low cost. This study aims to use such a known roof structure for a composite structure in which Ultra-High-Performance Concrete slabs are used to withstand various loads as a structural floor system. Various inclinations of the main elements for space frames were tested, namely 30 °, 45 ° and 60 °. The composite effect is accounted for by testing composite and non-composite samples. The test results were evaluated and compared against several performance indices, such as: Ultimate load, stiffness, hardness, ductility, ductility index and absorbed energy. Test results have shown that spaceframe models with an angle of 60 ° have the highest load-carrying capacity compared to other angles and the highest toughness compared to various techniques. Putting together 40mm UHPC slab panels reflected a slight increase in the models used in this study than traditional spaceframe samples.
Haitham H. Muteb and Dhafer M. Hasan
IOP Publishing
Abstract The modern architectural designs and building techniques in the constriction field need new materials. Those materials have high compressive strength, such as an Ultra-High-Performance Concrete, which abbreviates by UHPC. The UHPC is suitable to use for high-rise buildings and long-span bridges. Therefore, this study investigated the ability to produce UHPCs depends on available materials and the optimum proportion of these materials. Also, the increment of the steel fiber is needed to study its effects on the mechanical properties of the UHPC. Therefore, four Fraction Volume of steel fiber content has been adopted, which were 0%, 1.5%, 3.0%, and 4.5%. The results showed the ability to produce UHPC with a compressive strength reaches to 150 MPa, by using affordable materials. However, the increase of the steel fiber content would be improved the compressive strength of about 40% for the steel fiber content of 4.5% as well as the rupture stress increased to 160% for the same fraction. The results revealed that the reduction of the compressive strength reaches to 0.69 when used small molds.
Haitham H. Muteb and Dhafer M. Hasan
IOP Publishing
Abstract Modern structures require light elements with high stiffness to weight ratios. Composite structures with high-performance material are particularly useful for long spans such as in bridges and large buildings. Conventional concrete is brittle, with very low tensile and high compressive strength; ultra-high performance concrete UHPC can be used to improve the ductility and strength of the deck slab, yet though many researchers have examined the behaviour of UHPC individually, this material requires investigation in conjunction with other variables. A composite structure of steel plate girders and concrete deck is thus examined in the present study, with seven plate girders and three composite girders. Flat web plate girders without stiffeners were investigated to estimate ultimate strength in two parameters, web slenderness, and flange slenderness. In addition, three composite girders were tested with web slenderness ratings 167, 250, and 375. The results show the effects of slenderness on shear strength and the failure accrued due to tension field action, while elastic buckling was seen to contribute to shear strength.
Lamyaa Gh. Salim, Haider M. Al-Baghdadi, and Haitham H. Muteb
Ital Publication
Repairing of reinforced concrete structures is currently a major challenge in the construction industry and is being put back into operation with a slight loss in load carrying capacity. Damage occurs due to many factors that reduce the strength of concrete structures and their durability. The aim of this paper is study the compatibility between three types of reactive powder concrete with (steel fibre, glass fibre and polypropylene fibre) as a repair materials and normal strength concrete as a substrate concrete. Compatibility was investigated in three steps. First: individual properties for substrate concrete were studied, these are (slump test, compressive strength, splitting strength, and flexural strength) also, for repair material these are (compressive strength and flexural strength) were determined by using standard ASTM test methods. Second: bond strength of composite cylinder for substrate concrete with different repair materials were evaluated by using slant shear test. Third: compatibility was investigated by using composite prisms of substrate concrete with different repair materials under two-point loading (flexural strength test). From the experimental results concluded, bond strength between reactive powder concrete with glass fibre as a repair material and normal strength concrete as a substrate layer is higher (17.38Mpa) compared with RPC with steel fibre (13.13Mpa) and polypropylene fibre (14.31MPa). Also, it is more compatible due to flexural strength for composite prisms (having higher flexural strength (8.13MPa). Compared with steel fibre (7.44MPa) and polypropylene fibre (6.47MPa). These results due to RPC with glass fibre have good workability with suitable flowability and glass fibre have higher tensile strength compare with other fibre.
Sh Q Abdulridha, H H Muteb, and S Sh Abdulqader
IOP Publishing
Castellated steel profile sections can be used in order to increase the flexure strength of composite concrete-steel beams for building large spans. Castellated beams are fabricated by cutting I-section steel girders in a special manner before welding to produce an opening throughout the web. The depth of the new section is enhanced by a specific percentage, which increases the performance of the beam against bending. Castellated beams can be used compositely in long span floors where floor beam heights are kept to a minimum by passing services through the web-openings. This paper will focus on the composite behaviour of specimens in two types of concrete with different strengths. The ultimate strength for these types of structures with different degrees of castellation will be considered. The study consisted of two parts: the first part tested six specimens using push out test specimens to understand the real behaviour of their shear connectors. The second part tested eight specimens under a third point static load. Three of the push out test specimens were of normal concrete, and the others were self-compacting concrete. Four of the composite beam specimens were normal concrete slabs, while the other four specimens were made from self-compacting concrete. The experimental programme also included fabrication of I-section steel beams with different castellation degrees of 0%, 25%, 33.8%, and 50%. The effects of concrete type and degree of were thus studied. It was found that the maximum load capacity was significantly affected by these parameters such that it was increased with both the increase of compressive strength of the concrete and the degree of castellation. The push out test showed that the slip behaviour was linear below 70 to 80% of the ultimate load capacity. At this linear stage, the amount of slip is very low and rarely exceeds 0.5 mm.