Experimental and numerical study of the bulb's location effect on the behavior of under-reamed pile in expansive soil

Hayder M. Ziyara; B. S. Albusoda

doi:https://doi.org/10.1515/jmbm-2022-0010

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Publication Date

Sat Jan 01 2022

Journal Name

Journal Of The Mechanical Behavior Of Materials

Volume

31

DOI

https://doi.org/10.1515/jmbm-2022-0010

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Experimental and numerical study of the bulb's location effect on the behavior of under-reamed pile in expansive soil

under-reamed pile

expansive soil

bulb location

Plaxis software

Hayder M. Ziyara

B. S. Albusoda

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Abstract<p>In this experimental and numerical analysis, three varieties of under-reamed piles comprising one bulb were used. The location of the bulb changes from pile to pile, as it is found at the bottom, center, and top of the pile, respectively. <italic>PLAXES 3D</italic> was used to conduct the research. In expansive soil, the under-reamed piles were 350 mm long, with the pile tip in dense sandy soil. The experiment was carried out in both saturated and unsaturated circumstances. The influence of the bulb location on the pile's bearing capacity for vertical and lateral loads, as well as the amount of swelling pressure and upward movement owing to swelling, was investigated. The results showed that in the unsaturated state, the bulb at the top of the pile gives bearing that is higher than the bulb at the bottom of the pile and near to the bulb in the center. In the case of unsaturated soil, the closer the bulb is to the top, the larger the bearing capacity, whereas in the event of swelling, the bearing capacity is highest when the bulb is in the middle of the pile. The same is true of the pile's upward movement, which is greater when the bulb is at the top than when it is at the bottom.</p>

Publication Date

Tue Mar 01 2022

Journal Name

Iop Conference Series: Earth And Environmental Science

Effluent Quality Assessment Monitoring of Al-Rustamiya Sewage Treatment Plant Using Geographical Information System (GIS)

Effluents Quality

Geographical Information System

Al-Rustamiya

and inverse weighted distance (IWD)

Rusol

Basim

Basim H.

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Abstract<p>Water quality assessment offers a scientific basis for water resource development and management. This research aims to assessment of Al-Rustamiya sewage treatment plant depending on annually changes and produces maps that declare changes on parameter during a period (2015-2018). Based on prior Government Department Baghdad Environment data which annually feature changes for samples from Northern Rustamiya have been estimated as a working model. Drawn a map of the Diyala River shows annual changes in the characteristics of the Diyala River, based on northern and southern Rustamiya effluent samples, and Diyala River samples. The characteristics that research focused on were biochemical</p> ... Show More

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Sun Jan 01 2023

Journal Name

Alexandria Engineering Journal

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Ayad A.H.

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Thu Nov 07 2024

Journal Name

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Sun Mar 01 2020

Journal Name

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Optical properties of Ag-doped nickel oxide thin films prepared by pulsed-laser deposition technique

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Omar A.

Sarmed S.M.

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Mon Jan 01 2024

Journal Name

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Sun Nov 05 2017

Journal Name

International Journal Of Science And Research

Production of Biodiesel from Waste Cooking Oil using Cao-Egg Shell Waste Derived Heterogeneous Catalyst

eggshells

CaO

biodiesel

transesterification

heterogeneous catalyst

Israa M.

Mohammed

B.

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Biodiesel is an environmentally friendly fuel and a good substitution for the fossil fuel. However, the purity of this fuel is a major concern that challenges researchers. In this study, a calcium oxide based catalyst has been prepared from local waste eggshells by the calcination method and tested in production biodiesel. The eggshells were powdered and calcined at different temperatures (700, 750, 800, 850 and 900 °C) and periods of time (1, 2, 3, 4 and 5 hr.). The effect of calcination temperature and calcination time on the structure and activity of the solid catalyst were examined by X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Brunaure-Emmett-Teller (BET). The optimum catalyst performance was obtained at 900 °C

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Fri May 01 2015

Journal Name

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Mon Jun 30 2025

Journal Name

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Case Report: A Rare Presentation of Sigmoid Volvulus During Pregnancy With an Integrative Postoperative Approach

Colon

sigmoid

Intestinal volvulus

Pregnancy

Surgical procedures

operative

Emergency

Acute care surgery

Pregnancy outcome

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Sabah

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Publication Date

Wed Jun 01 2022

Journal Name

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Ahmed F.

Monim. H.

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Nitrogen dioxide NO₂ is one of the most dangerous contaminant in the air, its toxic gas that cause disturbing respiratory effects, most of it emitted from industrial sources especially from the stack of power plants and oil refineries. In this study Gaussian equations modelled by Matlab program to state the effect of pollutant NO₂ gas on area around Durra refinery, this program also evaluate some elements such as wind and stability and its effect on stacks height. Data used in this study is the amount of fuel oil and fuel gas burn inside refinery at a year 2017. Hourly April month data chosen as a case study because it’s unsteady month. After evaluate emission rate of the all fuel and calculate exit velocity from

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Publication Date

Fri Jan 01 2021

Journal Name

Ieee Access

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