About Journal

Iraqi Journal of Civil Engineering (IJCE) is a scientific journal in Civil Engineering Sciences. The journal aims to publish original and valuable research articles on the latest innovations in civil engineering. IJCE is published by the University of Anbar- College of engineering under the regulations of the Ministry of Higher Education and Scientific Research since 2005 and it is licensed under the Creative Commons Attribution 4.0 International License CC BY 4.0.The journal is open access and a double-blind peer-review journal and it is issued quarterly. The abundance of original and valuable...
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Journal Information

Publisher: University of Anbar

Email:  ijce@uoanbar.edu.iq

Editor-in-chief: Professor Dr. Khamis Naba Sayl

Print ISSN: 1992-7428

Online ISSN: 2706-686X

Assessment of Groundwater Quality at Selected Location of three Wells and Al-Warrar Canal, Ramadi City, Iraq.

Reaam Abood; Ayad Mustafa; Jumaa Al Somaydaii

Iraqi Journal of Civil Engineering, 2021, Volume 15, Issue 2, Pages 1-7
DOI: 10.37650/ijce.2021.170714

To classification groundwater quality in the study area, three wells were drilled at a depth of 10m and selected two locations across Al Warrar Canal to represent their water quality. Water samples were collected from these wells and the Warrar Canal to examine water quality. Then results were compared against the World Health Organization (WHO) limits to study the Index of Water Quality (WQI). WQI was calculated according to the Canadian Council of Ministers of the Environment (CCME), and the quality of water was evaluated for domestic and irrigation uses. The samples were tested for electrical conductivity, pH, temperature, total dissolved solids, chloride, total hardness, nitrate, and alkalinity according to the standard methods. The results of laboratory analysis showed significant differences among the wells and Warrar Canal water quality in the measured parameters according to WHO limits. Due to many human activities like urbanization, agrarian overflow, drainage of untreated sewage, and industrialization, high values of trace elements and heavy metals were recorded in wells three. For agriculture purposes, the results show that the water in the three wells is very high salinity, where the Warrar Canal is high salinity, and Canal water causes saline and alkali damages. It was recommended that the WQI in three wells was poor water quality whereas, marginal water quality was pointed in AL Warrar Canal.
 

 

The Dilemma at Signalized Intersection Dilemma Zone

Mehdi I. AL-Kubaisi

Iraqi Journal of Civil Engineering, 2009, Volume 6, Issue 1, Pages 75-88
DOI: 10.37650/ijce.2009.14181

AbstractWhen drivers are approaching a signalized intersection at the onset of ayellow change interval, they must decide whether to stop or cross theintersection. This can be a difficult decision when the vehicle is locatedwithin the dilemma zone and the result is sometimes a rear-end crash due to asudden stop. Dilemma zone is defined as an area close to an intersection inwhich a vehicle can neither stop safely before the intersection nor clear theintersection without speeding before the red signal comes on. This research studiesthe driver behavior during the amber onset in the signalized intersection.One signalized intersection was selected in Damascus city to collect data forthis purpose. Data was collected using video recording technique. Data wereabstracted, processed and analyzed using programs developed for this purpose. Thestudy examined 226 drivers on the amber onset, 42.47% of them were found to beconflicted by the dilemma zone phenomenon. 51.25% of them conflicted withaccelerating, 42.5% who stopped abruptly, and 6.25% who passed during the redsignal.Key words: dilemma zone, amber onset, clearing distance, stopping distance

Producing of eco-friendly lightweight concrete using waste polystyrene particles as aggregates with adding waste plastic

Saad J. Mohammed; Abdulkader I. Al-Hadithi; Shamil K. Ahmed

Iraqi Journal of Civil Engineering, 2018, Volume 12, Issue 1, Pages 45-56
DOI: 10.37650/ijce.2018.142407

This research includes studying the possibility of producing a new kind of No-fines concrete by replacing granules of coarse aggregates with grains results from the fragmentation of industrial waste of polystyrene. This replacing were with different volumetric proportions of coarse aggregate, and theses volumetric ratios were equal to (5%, 10%, 15% and 25%). Waste plastic fibers (WPFs) resulting from cutting of soft drinks bottles were added for strengthening this new kind of concrete. Mixing ratio was equal to (1:5) (cement: coarse aggregate) by weight. One reference mix was produced for comparative purpose. Compressive strength, flexural strength and density tests were conducted, it was examined three samples of each examination and taking the average.
Compressive strength values of the new sustainable concrete were ranged from 10 MPa to 12.4 MPa at age of test equal to 28 days, while the average value of the density of this concrete at the same age reaches 1930 kg/m3. This average value of modulus of rupture was equal to 2.36 MPa at 28-day age test.

Ductility and Toughness of Unsymmetrical CFRP Strengthening of Reinforced Concrete Beams

Abdulsalam M. Njeman; Akram S. Mahmoud

Iraqi Journal of Civil Engineering, 2018, Volume 12, Issue 1, Pages 10-25
DOI: 10.37650/ijce.2018.142404

The use of externally bonded composite materials such as carbon fiber reinforced polymers (CFRP) sheets is a modern and convenient way for strengthening and repairing reinforced concrete (RC) beams. This study presents experimental investigations on the flexural behavior of reinforced concrete beams strengthened by unsymmetrical CFRP sheets with various configurations. Effects of number of which strengthened faces of strengthening and fiber direction on the flexural strength of RC beams are examined. Six RC beams with dimensions of 100 mm * 220 mm were casted and tested under two points loading. One beam considered as a reference (unstrengthened) beam. Five residual beams were strengthened using CFRP sheets with various configurations. From the results, it was observed that all strengthened beams showed higher ultimate load capacity than that of the control beam. On the other hand, it was found that a progressive reduction in flexural ductility and toughness of beams with strengthening in one face and two faces with horizontal fiber direction. The highest decrease in flexural ductility and toughness for strengthened beams with horizontal fiber direction in comparison to control beam were 63% and 54%, respectively. On the contrary, the flexural ductility and toughness of strengthened beams increased with strengthening by vertical fiber direction. Additionally, the maximum percentage of increase in flexural ductility and toughness were 41% and 54%, respectively in comparison with control beam.

Stress-Strain Relationship for Steel-Fiber Reinforced Polymer Modified Concrete under Compression

Dr.Abdulkader Ismail Al- Hadithi; Ameer Abdulrahman Al- Dulaimy; Dr .Saeed Khalaf Rejib

Iraqi Journal of Civil Engineering, 2016, Volume 10, Issue 1, Pages 19-30
DOI: 10.37650/ijce.2016.106759

The present study, concern about an experimental work to study the stress-strain relationship of steel-fiber reinforced polymer modified concrete under compression.
Four different mixes with weight proportions of (1:2:4) were used as; normal weight concrete (NC), polymer modified concrete (PMC) with (10%) of cement weight and two mixes of steel-fiber polymer modified concrete with (1%) and (2%) volume fraction of steel fiber, (SMPC).
The influences of polymer and fiber addition on peak stress, strain at peak stress and the stress-strain curve were investigated for concrete mixes used. For all selected mixes, cubes (150×150×150mm) were made for compressive strength test at (28) days while stress-strain test was caried out on cylinders (150 mm  300 mm) at the same age.
Results showed an improvement in compressive strength of polymer modified concrete (PMC) over reference mix, the maximum increase of it was (13.2 %) at age of (28) days. There is also an increase in compressive strength with increasing of steel fibers content with comparison to normal concrete, the maximum increases of it were (19.6% and 25.2%) of mixes with 1% and 2% fiber content by volume respectively. In terms of modulus of elasticity, the addition of polymer and the presence of fibers cause a significant increase in it.
The peak of stress- strain curve for normal strength concrete (Mix No.1) was linear whereas it was more sharp for the other mixes. The behaviour of normal strength concrete (Mix No.1) was linear up to 20 % of ultimate strength, while for the mixes with the higher strength i.e. polymer modified concrete and fibers reinforced concrete (Mixes No.2, 3 and 4) the linear portion increases up to about 50 % of ultimate strength

BEHAVIOR OF MULTI-LAYER COMPOSITE BEAMS WITH PARTIAL INTERACTION "PART I "

Khalel I. Aziz; Zeyad M. Ali; Riyadh I. M. Al-Amery

Iraqi Journal of Civil Engineering, 2007, Volume 4, Issue 8, Pages 1-18
DOI: 10.37650/ijce.2007.14137

ABSTRACT: In this study an attempt is made to develop a method of analysis dealing with a multi-layer composite beam, for linear material and shear connector behavior in which the slip (horizontal displacement) and uplift force (vertical displacement) are taken into consideration. The analysis is based on a approach presented by Roberts[1], which takes into consideration horizontal and vertical displacement in interfaces. The analysis led to a set of eight differential equations contains derivatives of the fourth and third order. A program based on the present analysis is built. Series of three push-out tests were carried out to investigate the capacity of shear stiffness for connectors. From these tests, load-slip curves were obtained. Also, series of multi-layer composite simply supported beams were tested. Each one consists of three layers in different material properties and dimensions. A comparison between the experimental values and numerical analysis is carried out. Close agreement is obtained with experimental values for different materials, layers thickness and shear stiffness.

INFLUNCE OF INCREASING WATER:CEMENT RATIO ON THE SOME PROPERTIES OF CONCRETE CONTAINS LOW CONTENT OF POLYMER

Abdulkader Ismail Al-Hadithi

Iraqi Journal of Civil Engineering, 2005, Volume 3, Issue 6, Pages 26-36
DOI: 10.37650/ijce.2005.65619

1-AbstractThis research includes the variation effect of (W/C) water: cement ratio on the properties as compressive strength , flxural strength , density and workability of concrete contains low Polymer SBR ratio.1:2:4 (cement: sand :gravel) by weight mixes were used . The polymer was added as percentages of cement weight and it was 2%. Reference mix was made. Water cement ratio (w/c) were used are 0.2 , 0.3 , 0.4 , 0.5 and 0.6 respectively and 0.35 (w/c) was used for reference mix . The density of concrete varied between 2030 kg/m3 and 2360 kg/m3.

The Environmental Effect Reduction On Internal Space Temperature By External Walls Covering (Experimental Study)

Atif Ali Hassan

Iraqi Journal of Civil Engineering, 2012, Volume 7, Issue 2, Pages 45-58
DOI: 10.37650/ijce.2012.68991

The object of this paper was reduced the heat transferred quantities from or to internal building space by covering it's external walls with many materials, therefore, the researcher build the (1x1x2) m room sample at 3rd floor for building in Baghdad city (L = 33.2 N°), and (1x2)m wall has East orientation , while the other surfaces were insulated by 200 mm styropor sheets, and using Air – Conditioner 0.5 Ton of refrigeration to afford the standard thermal comfort.
The researcher found that, the metal sheet painted with thermal plastic paint with 10 mm thermal insulation used as a cover layer for ordinary wall saved 57% from electrical energy consumption in Air-Conditioner, while used that material without insulation layer gives 46.2% , hollow plastic board (for decorative used) gives 42.5% , hollow faced brick with thermal insulation gives 40.22%, solid flooring brick with thermal insulation gives 39.5% , colour metal sheets with air – gap gives 36.4%, asbestos – cement board coated by reflective aluminum paint gives 34%, the ceramic with thermal insulation gives 31.9%, while all the material – marble , porcelene , hallan stone , fiberglass sheets with 10 mm thermal insulation will gives the electrical energy reduction percentage less than 30% .

BEHAVIOR OF MULTI-LAYER COMPOSITE BEAMS WITH PARTIAL INTERACTION "PART I "

Khalel I. Aziz; Zeyad M. Ali; Riyadh I. M. Al-Amery

Iraqi Journal of Civil Engineering, 2007, Volume 4, Issue 8, Pages 1-18
DOI: 10.37650/ijce.2007.14137

ABSTRACT: In this study an attempt is made to develop a method of analysis dealing with a multi-layer composite beam, for linear material and shear connector behavior in which the slip (horizontal displacement) and uplift force (vertical displacement) are taken into consideration. The analysis is based on a approach presented by Roberts[1], which takes into consideration horizontal and vertical displacement in interfaces. The analysis led to a set of eight differential equations contains derivatives of the fourth and third order. A program based on the present analysis is built. Series of three push-out tests were carried out to investigate the capacity of shear stiffness for connectors. From these tests, load-slip curves were obtained. Also, series of multi-layer composite simply supported beams were tested. Each one consists of three layers in different material properties and dimensions. A comparison between the experimental values and numerical analysis is carried out. Close agreement is obtained with experimental values for different materials, layers thickness and shear stiffness.

تطویر الأداء الإداری لدوائر المشاریع الهندسیة بالاعتماد على متطلبات إدارة الجودة (الایزو9001 2000)(دائرة المشاریع الهندسیة فی جامعة تکریت حالة دراسیة)

Iraqi Journal of Civil Engineering, 2010, Volume 6, Issue 3, Pages 14-31
DOI: 10.37650/ijce.2010.14130

Considering the corporations of the projects engineering in the universities from important corporations because they which work from projects contribute in prosperity and development of construction.
Although for the quality management importance and concept application on the effects of these corporations, therefore must be first application quality management in these projects.
The aim of this research to study the management system which used in the engineering affairs corporation (University of Tikrit study case). The harmony evaluation purpose between the management systems with the quality management system dependency on the tests menus which limited I.S.O. 9001/2000 and visit the corporation of projects engineering in university of tikrit for study the management system.
Where as a questionnaire form was prepared, included answer on the questions of the tests menus, questionnaire distributed on the group of corporation engineering staff and some engineers whose they worked past in this corporation to fill the answers on questionnaire.
The questionnaire results show that this corporation suffer disadvantage very clear in the corporation system structure. After that the Researchers suggest the management system build which can be more active and with high response on requirements of quality managemen

Improving the hydraulic performance of single step broad-crested weirs

Saleh J. S. Shareef; Inam A. K. Juma; Hamid H. Hussein

Iraqi Journal of Civil Engineering, 2012, Volume 7, Issue 1, Pages 1-12
DOI: 10.37650/ijce.2012.14192

Abstract In this study the hydraulic performance of single step broad-crested weir was improved. Through analyzing the parameters that have effect on the shape of the step and its influence on the flow characteristics, and energy dissipation percent (E%) downstream (D/S) of the weir. The differential equation of gradually varied flow for the water surface profile over the weir was solved analytically .Furthermore, empirical relations for E% and discharge coefficient (Cd) due to the affecting factors were derived .The results showed that the weir model when the ratio of the length of D/S step to the length of the weir L2/L1=0.5 gives a higher E% in comparison with other weir models. Three types of flow regimes were observed, nappe flow below 350 cm3 /s/cm, transition flow 350-700 cm3/s/cm and skimming flow upper than 700 cm3/s/cm . The comparison between calculated values by the differential equation of gradually varied flow and experimental values gives a good agreement, the maximum difference is about 7%.Two empirical relations were obtained, the first to estimate Cd in terms of the ratio for upstream U/S water head to U/S weir height H/P1 and L2/L1. While the second relation to estimate E% in terms of the ratio for D/S water head to U/S weir height h/P1, L2/L1 and the Froude number Fr2 with a high correlation coefficient . Key words: Hydraulics; weirs ; performance ; dissipation energy.