Research Paper
Stress Analysis of Transversely Loaded Isotropic Three-Dimensional Plates Using a Polynomial Shear Deformation Theory
Stress Analysis of Transversely Loaded Isotropic Three-Dimensional Plates Using a Polynomial Shear Deformation Theory

Festus C. Onyeka; B. O. Mama; Chidobere D. Nwa-David

Volume 41, Issue 5 , May 2023, Page 603-618

https://doi.org/10.30684/etj.2023.137410.1345

Abstract
  An exact solution for the bending attributes of a thick rectangular plate under transverse loading is modeled herein using three-dimensional (3-D) elasticity plate theory and fourth-order ...  Read More ...
Review Paper
Flexural Performance of Concrete Beams Reinforced with Hybrid FRP-Steel Bars: A mini review
Flexural Performance of Concrete Beams Reinforced with Hybrid FRP-Steel Bars: A mini review

Marwah S. Abduljabbar; Wael S. AbdulSahib

Volume 41, Issue 5 , May 2023, Page 619-628

https://doi.org/10.30684/etj.2022.135764.1284

Abstract
  Reinforced concrete beams are the most generally used structural parts in building, bridges, and many other structures. In the past two decades, many investigations have been conducted ...  Read More ...
Research Paper
Effect of Adding Recycled Sand and Fines Retained from Eggshell Waste on the Mechanical Properties and Durability of SCC and SFSCC
Effect of Adding Recycled Sand and Fines Retained from Eggshell Waste on the Mechanical Properties and Durability of SCC and SFSCC

Chaib. S; Bensalem. R

Volume 41, Issue 5 , May 2023, Page 629-641

https://doi.org/10.30684/etj.2023.137162.1340

Abstract
  This scientific research was carried out within the framework of contributing to the recovery different of natures of waste, and making it possible to minimize using of natural aggregates ...  Read More ...
Research Paper
Soil-Foundation Interaction and Its Influences on Some Geotechnical Properties of Sulaimaniyah, Northern Iraq Fine-Grained Soils Utilizing Plaxis 3D
Soil-Foundation Interaction and Its Influences on Some Geotechnical Properties of Sulaimaniyah, Northern Iraq Fine-Grained Soils Utilizing Plaxis 3D

Nihad B. Salih; Tavga A. Abdalla; Fadhl A. Ahmed

Volume 41, Issue 5 , May 2023, Page 642-651

https://doi.org/10.30684/etj.2022.136345.1310

Abstract
  Foundations of various construction projects usually can be either shallow or deep foundations. A mat foundation is one of the common shallow foundations typically utilized for various ...  Read More ...
Research Paper
Prediction of Fresh and Hardened Properties of Concrete Containing Nanostructured Cassava Peel Ash Using Ibearugbulem's Approach
Prediction of Fresh and Hardened Properties of Concrete Containing Nanostructured Cassava Peel Ash Using Ibearugbulem's Approach

Chidobere D. Nwa-David; David O. Onwuka; Fidelis C. Njoku; Owus M. Ibearugbulem

Volume 41, Issue 5 , May 2023, Page 652-665

https://doi.org/10.30684/etj.2023.138099.1374

Abstract
  Statistical methods such as Scheffe’s and Osadebe’s models are commonly employed for the optimization of concrete properties. Despite their prediction suitability, attention ...  Read More ...
Research Paper
Variability Analysis of the Behaviors of a Lateritic Soil Profile as a Structural Material
Variability Analysis of the Behaviors of a Lateritic Soil Profile as a Structural Material

Chidobere D. Nwa-David; Festus C. Onyeka

Volume 41, Issue 5 , May 2023, Page 666-672

https://doi.org/10.30684/etj.2023.137779.1359

Abstract
  The desideratum of determining the behavior of the underlying soil on which the foundations will be laid is indisputable. This study evaluates the strength characteristics of lateritic ...  Read More ...
Research Paper
Assessment of the Environmental and Health risks of Chromium in the Soil of Tanning Factories (Baghdad City - Iraq)
Assessment of the Environmental and Health risks of Chromium in the Soil of Tanning Factories (Baghdad City - Iraq)

Rawnaq S. Mahdi

Volume 41, Issue 5 , May 2023, Page 673-686

https://doi.org/10.30684/etj.2023.137146.1337

Abstract
  The present study assesses the pollution level and health risk of heavy metal (Cr) in the area surrounding the tanning factories’ soil in Baghdad city-Iraq. Chromium concentration, ...  Read More ...
Research Paper
Future Water Requirements and Crop Productivity at Al-Najaf Governorate Under Different Climate Change Scenarios (2020–2080)
Future Water Requirements and Crop Productivity at Al-Najaf Governorate Under Different Climate Change Scenarios (2020–2080)

Noor Sabah; Mustafa Al-Mukhtar; Khalid Shemal

Volume 41, Issue 5 , May 2023, Page 687-697

https://doi.org/10.30684/etj.2023.137102.1335

Abstract
  This study aims to predict the effect of climate change on net irrigation water requirements (NIWR) and agricultural productivity from five common crops (wheat, barley, summer maize, ...  Read More ...
Research Paper
Soft Computing Models to Predict the Compaction Characteristics from Physical Soil Properties
Soft Computing Models to Predict the Compaction Characteristics from Physical Soil Properties

Hunar F. Hama Ali

Volume 41, Issue 5 , May 2023, Page 698-715

https://doi.org/10.30684/etj.2023.137772.1360

Abstract
  In almost every earthwork, it is essential to compact soil so that the densest possible state of the soil can be achieved. The suitability of soil for earthworks relies on the compaction ...  Read More ...
Research Paper
Impact of Dam Materials and Hydraulic Properties on Developing the Breaching Dimensions
Impact of Dam Materials and Hydraulic Properties on Developing the Breaching Dimensions

Mahmood J. Mohamed; Ibtisam R. Karim; Mohammed Y. Fattah

Volume 41, Issue 5 , May 2023, Page 716-723

https://doi.org/10.30684/etj.2023.138009.1368

Abstract
  Dam safety is an important issue as it directly influences environmental and life losses. Embankment material and embankment core are important factors that contribute to determining ...  Read More ...
Research Paper
Optimization of Silica Fume and Slag in Roller Compacted Concrete by Taguchi Method
Optimization of Silica Fume and Slag in Roller Compacted Concrete by Taguchi Method

Ziyad M. Abed; Hisham K. Ahmed; Wasan I. Khalil

Volume 41, Issue 5 , May 2023, Page 724-733

https://doi.org/10.30684/etj.2023.138600.1411

Abstract
  Roller Compacted Concrete Pavement (RCCP) is one type of concrete poured and compacted with the same machines utilized to construct heavy-duty pavements, log sorting, and parking. In ...  Read More ...
Research Paper
Fresh Properties of Self-Consolidating Expired Cement-Fly Ash Cold Bonded Lightweight Aggregate Concrete With Different Mineral Admixtures
Fresh Properties of Self-Consolidating Expired Cement-Fly Ash Cold Bonded Lightweight Aggregate Concrete With Different Mineral Admixtures

Haider Araby Ibrahim; Waleed A. Abbas

Volume 41, Issue 5 , May 2023, Page 734-744

https://doi.org/10.30684/etj.2023.139260.1424

Abstract
  The experimental program evaluated the fresh properties of self-consolidating lightweight concretes (SCLC) produced from expired cement EC cold-bonded lightweight coarse aggregates ...  Read More ...