Research Paper
Development of Intensity-Duration-Frequency (IDF) Models for Manually Operated Rain Gauge Catchment: A Case Study of Port Harcourt Metropolis Using 50years Rainfall Data
Development of Intensity-Duration-Frequency (IDF) Models for Manually Operated Rain Gauge Catchment: A Case Study of Port Harcourt Metropolis Using 50years Rainfall Data

Francis J. Ogbozige

Volume 40, Issue 5 , May 2022, Page 627-635

https://doi.org/10.30684/etj.2021.131839.1064

Abstract
  Hydraulic structures such as surface drainages and culverts are usually constructed in urban areas with the intention of draining runoff into nearby streams and rivers in order to avoid ...  Read More ...
Research Paper
3D Numerical modeling of Soft soil Improved by Rigid Inclusions Supported an Embankment
3D Numerical modeling of Soft soil Improved by Rigid Inclusions Supported an Embankment

MESSIOUD Salah; NEGHMOUCHE Yassamina

Volume 40, Issue 5 , May 2022, Page 636-648

https://doi.org/10.30684/etj.2021.132023.1083

Abstract
  Abstract A three-dimensional finite element model suggested to determine the settlements and stresses of an embankment placed on soft soil reinforced by rigid inclusions. To make it ...  Read More ...
Research Paper
Monitoring Soil Degradation in The Mesopotamian Plain Using GIS and Remote sensing Techniques
Monitoring Soil Degradation in The Mesopotamian Plain Using GIS and Remote sensing Techniques

Abdulrazak T. Ziboon; Muthanna M. Albayati; Fadhaa T. Dalhel

Volume 40, Issue 5 , May 2022, Page 649-660

https://doi.org/10.30684/etj.v40i5.2121

Abstract
  In the present work , various remote sensing techniques have been used to investigate soil degradation in Iraq (The Mesopotamian plain) for the period (1976 - 2021) using different ...  Read More ...
Research Paper
Finite Element Simulation of Repeated Loading Test of Asphalt Concrete
Finite Element Simulation of Repeated Loading Test of Asphalt Concrete

Noor S. Hatem; Miami M. Hilal; Mohammed Y. Fattah

Volume 40, Issue 5 , May 2022, Page 661-667

https://doi.org/10.30684/etj.v40i5.2128

Abstract
  In this paper, the Abaqus 6.14 version program was used to carry out a three-dimensional finite element analysis to predict the rut in the asphalt laboratory model. In a previous study, ...  Read More ...
Research Paper
Push–out Test of Timber Concrete Composite Construction
Push–out Test of Timber Concrete Composite Construction

Ihab S. Saleh; Nabeel A. Jasim; Anis A. Mohhamed Ali

Volume 40, Issue 5 , May 2022, Page 668-676

https://doi.org/10.30684/etj.v40i2.2175

Abstract
  In this study, push – out test specimen is proposed to explore the behavior of shear connectors in timber–concrete composite beams. Since there are no standard shapes and ...  Read More ...
Research Paper
SWOT-Based Assessment of the Maintenance Management of the Wastewater Treatment Plants in Iraq
SWOT-Based Assessment of the Maintenance Management of the Wastewater Treatment Plants in Iraq

Reem Tareq Al-Attar; Faris H. Al-Ani; Mahmoud Saleh Al-Khafaji

Volume 40, Issue 5 , May 2022, Page 677-694

https://doi.org/10.30684/etj.v40i5.2146

Abstract
  In Iraq, due to WWTPs being old and outdated, an evaluation of the maintenance management is needed to highlight the points of weaknesses and strengths of the plants. In this paper, ...  Read More ...
Research Paper
Assessment of Future Climate Change Impacts on Water Resources of Khabour River Catchment, North Of Iraq
Assessment of Future Climate Change Impacts on Water Resources of Khabour River Catchment, North Of Iraq

Lena Haitham; Mustafa Al-Mukhtar

Volume 40, Issue 5 , May 2022, Page 695-709

https://doi.org/10.30684/etj.v40i5.1925

Abstract
  In arid and semi-arid areas, assessing the potential impact of climate change on water availability is of critical importance for achieving better management of future water resources. ...  Read More ...
Research Paper
Effect of Partial Saturation on Ultimate Bearing Capacity of Skirted Foundations
Effect of Partial Saturation on Ultimate Bearing Capacity of Skirted Foundations

Mahmood R. Mahmood; Saad F. A. Al-Wakel; Muthana S. Mohammed

Volume 40, Issue 5 , May 2022, Page 710-721

https://doi.org/10.30684/etj.v40i5.2259

Abstract
  Skirted foundations are one of the solutions proposed to increase the bearing capacity of the soil. They assist in increasing the load and depth of failure in weak ground or soils with ...  Read More ...
Modeling Critical Gap of Al Turkmani Roundabout in Baghdad City
Modeling Critical Gap of Al Turkmani Roundabout in Baghdad City

Laith Q. Shadhan; Zainab A. Alkaissi

Volume 40, Issue 5 , May 2022, Page 722-731

https://doi.org/10.30684/etj.v40i5.1628

Abstract
  Interest in how roundabouts can most effectively be used continues to increase to achieve goals of safety, efficiency, along with other benefits. This research presents the most important ...  Read More ...
Research Paper
Environmental Investigation of Bahar Al-Najaf Region Using Sentinel-2 Images
Environmental Investigation of Bahar Al-Najaf Region Using Sentinel-2 Images

Mustafa H. Al-Helaly; Imzahim A. Alwan; Amjed N. AL-Hameedawi

Volume 40, Issue 5 , May 2022, Page 732-742

https://doi.org/10.30684/etj.v40i5.2245

Abstract
  This study aims to shed light on the indicators of environmental change and environmental impact assessment during the past five years in a representative area of the western part of ...  Read More ...
Review Paper
Structural Behavior of Ultra-High-Performance Concrete Beams Under Flexural and Shear Action: A Review
Structural Behavior of Ultra-High-Performance Concrete Beams Under Flexural and Shear Action: A Review

Adil M. Jabbar; Mohammed J. Hamood; Dhiyaa H. Mohammed

Volume 40, Issue 5 , May 2022, Page 743-758

https://doi.org/10.30684/etj.2021.131102.1003

Abstract
  Ultra-high performance concrete (UHPC) has a higher tensile strength than conventional concrete by about 6-times, besides a compressive strength greater than 150 MPa. It also exhibits ...  Read More ...
Research Paper
Effect of Wire-Mesh Type on Strengthening Reinforced Concrete Beams
Effect of Wire-Mesh Type on Strengthening Reinforced Concrete Beams

Basil S. Al-Shathr; Haider A. Abdulhameed; mohammed M. Mahdi

Volume 40, Issue 5 , May 2022, Page 759-768

https://doi.org/10.30684/etj.2021.131159.1009

Abstract
  Structural strengthening is a method of application to raise the load-ability capacity of building structures to meet the building's need to carry additional and unexpected loads that ...  Read More ...
Research Paper
Numerical Simulation of the Effect of Repeated Load and Temperature on the Behavior of Asphalt Layers
Numerical Simulation of the Effect of Repeated Load and Temperature on the Behavior of Asphalt Layers

Hind Akram; Miami Hilal; Mohammed Fattah

Volume 40, Issue 5 , May 2022, Page 769-778

https://doi.org/10.30684/etj.2021.131187.1012

Abstract
  Roads and highways are used by different vehicle types, and the heavy vehicles among them can be considered the most critical in loading, which causes failure in the pavement structure ...  Read More ...
Research Paper
Managing the Excess Floodwaters in the Lake Hemrin Using Remote Sensing and GIS Techniques
Managing the Excess Floodwaters in the Lake Hemrin Using Remote Sensing and GIS Techniques

Hussain Muhamed; Mustafa N. Hamoodi; Abd Alrazzak T. Ziboon

Volume 40, Issue 5 , May 2022, Page 779-791

https://doi.org/10.30684/etj.2021.131195.1017

Abstract
  Lake Hemrin is located in the middle east of Iraq, about 50 km from the Iraqi-Iranian border. The lake is the main fish source and provides water for nearby farms. However, due to various ...  Read More ...
Research Paper
Investigation of the Bearing Capacity and Collapsibility of Gypseous Soil Using Geotextile Reinforcement
Investigation of the Bearing Capacity and Collapsibility of Gypseous Soil Using Geotextile Reinforcement

Qasim A. Al-Obaidi; Makki K. Mohsen; Ayad O. Asker

Volume 40, Issue 5 , May 2022, Page 792-801

https://doi.org/10.30684/etj.2021.131076.1002

Abstract
  This study aims to increase the bearing capacity of the soil by using geosynthetics in a single, double, or triple distribution pattern. The gypseous soil samples were brought from ...  Read More ...
Research Paper
Identifying Risk Factors Influencing Traffic Accidents for Baghdad Expressways
Identifying Risk Factors Influencing Traffic Accidents for Baghdad Expressways

Hasan H. Joni; Mustafa H. Jasim

Volume 40, Issue 5 , May 2022, Page 802-809

https://doi.org/10.30684/etj.2021.131184.1011

Abstract
  In this paper, the SPSS program (version 25) and Binary Logistic Regression Model were used to implement and identify the risk factors that affect traffic accidents on Baghdad highways. ...  Read More ...
Research Paper
The Effect of Scrap Tires Recycled Steel Fibers on Some Hardened Properties of Green SCC
The Effect of Scrap Tires Recycled Steel Fibers on Some Hardened Properties of Green SCC

Nadeem Salam; Wasan I. Khalil

Volume 40, Issue 5 , May 2022, Page 810-818

https://doi.org/10.30684/etj.2022.132605.1133

Abstract
  The purpose of this study is to investigate some hardened properties of green self-compacting concrete (GSCC) with 15% volumetric replacements of crushed clay brick waste as coarse ...  Read More ...
Research Paper
Mechanical Performance of Blended Fly Ash-based Geopolymer Concrete with GGBS and Metakaolin
Mechanical Performance of Blended Fly Ash-based Geopolymer Concrete with GGBS and Metakaolin

Ali A. Ali; Tareq S. Al-Attar; Waleed A. Abbas

Volume 40, Issue 5 , May 2022, Page 819-831

https://doi.org/10.30684/etj.2022.132647.1135

Abstract
  One of the most user-friendly alternatives to ordinary concrete is geopolymer concrete(GPC), which achieves the same result. GPC is a unique substance made by activating source materials ...  Read More ...
Research Paper
Effect of domestic dry sewage sludge on concrete compressive strength
Effect of domestic dry sewage sludge on concrete compressive strength

Alaa R. Al-Obaidi; Riyad H. Al-Anbari; maan S. hassan

Volume 40, Issue 5 , May 2022, Page 832-839

https://doi.org/10.30684/etj.2021.131284.1022

Abstract
  The possibility of saving and sustaining natural materials by reusing waste is one of the most important goals researchers seek to achieve and prove its effectiveness and positive impact ...  Read More ...