Preferred Language
Articles
/
alkej-105
Effect of Construction Joints on Performance of Reinforced Concrete Beams
...Show More Authors

Construction joints are stopping places in the process of placing concrete, and they are required because in many structures it is impractical to place concrete in one continuous operation. The amount of concrete that can be placed at one time is governed by the batching and mixing capacity and by the strength of the formwork. A good construction joint should provide adequate flexural and shear continuity through the interface.

In this study, the effect of location of construction joints on the performance of reinforced concrete structural elements is experimentally investigated.

Nineteen beam specimens with dimensions of 200×200×950 mm were tested. The variables investigated are the location of the construction joints (at midspan or at third point of the specimens), type of construction joints (vertical, inclined, and key construction joints), and presence of stirrups at these joints. The specimens were tested using 1000 kN computer controlled versatile electronic testing machine. The specimens were positioned in the machine so that the deflection at center and\or at the location of construction joint was measured at each load step.

The results of the experimental program indicated that the best location of the construction joint is at the point of minimum shear. It was found that the use of vertical construction joint has little effect on the overall behavior of beam specimens (the percentage of reduction in ultimate load capacity is in the range of 0% - 5%).

While inclined construction joints results in a noticeable reduction in strength of beams relative to the strength of beam without construction joint the percentage of reduction in ultimate load capacity is in range of 8% - 20%.The presence of stirrups at the construction joints is an important variable, which affect the type of failure and load carrying capacity. It is found that adding of stirrups across the joint results in an increase in capacity in the range of (7%- 15%) and a decrease in deflection in the range of (20%- 48%).

View Publication Preview PDF
Quick Preview PDF
Publication Date
Wed Mar 10 2021
Journal Name
Baghdad Science Journal
synthesis and characterization of 2 hydroxy
...Show More Authors

diasotiation compondnds sulphate upon with melting elemental aryl been used in his mouth for a while of studied

View Publication Preview PDF
Publication Date
Mon Dec 30 2002
Journal Name
Iraqi Journal Of Chemical And Petroleum Engineering
Volumetric Chemisorption Studies of Reformig Catalysts
...Show More Authors

View Publication Preview PDF
Publication Date
Mon Feb 14 2022
Journal Name
Journal Of Educational And Psychological Researches
The Organizational Values of Kindergarten Teachers
...Show More Authors

The current study aims to identify the organizational values ​​of kindergarten teachers as well as to identify the difference in the organizational values ​​of kindergarten teachers in term of years of service, to do this; the researcher designed a scale to measure the organizational values. The scale was applied on a sample of (400) kindergarten teachers. The resesults revealed that kindergarten teachers have a high level of organizational values ​​within the classroom. The result of the second objective showed significant differences among the organizational values ​​(political,

... Show More
View Publication Preview PDF
Publication Date
Wed Jan 02 2019
Journal Name
Journal Of Educational And Psychological Researches
The vigilant personality of University teachers
...Show More Authors

This research aims to identify the vigilant personality of University teachers in term of gender. To this end, the researcher used the scale of Al-tememe (2017) for the vigilant personality, the scale was administered to the sample of the study which was (100) male and female teachers. The results have shown that university teachers generally have a vigilant personality, as well as the result showed a difference between male and female teachers on the level of vigilant personality in favor of males. In the light of these results the researcher has come with a number of recommendations and suggestions.

View Publication Preview PDF
Publication Date
Mon Apr 01 2019
Journal Name
Journal Of Educational And Psychological Researches
The Logical Maturity of Kindergarten Children
...Show More Authors

The aim of this research is to measure the logical maturity of kindergarten children. To achieve this aim, the researcher adopted the scale of Gold Schmid and Bentler (1968), which was translated to the Arabic language by Shabili (1988). The scale was administered to a sample of (100) kindergarten children were chosen randomly from a number of kindergartens in Baghdad city for the academic year (2017-2018). SPSS was used to analyze the collected data. The results revealed there is a level of logical maturity among the kindergarten children. The researcher came out with a number of recommendations and suggestions.                     &

... Show More
View Publication Preview PDF
Publication Date
Sun Dec 02 2018
Journal Name
Journal Of The College Of Education For Women
Structuralism and the Problem of Text
...Show More Authors

All modern critical approaches attempt to cover the meanings and overtones of the text, claiming that they are better than others in the analysis and attainment of the intended meanings of the text. The structural approach claims to be able to do so more than any other modern critical approach, as it claimed that it is possible to separate what is read from the reader, on the presumed belief that it is possible to read the text with a zero-memory. However, the studies in criticism of criticism state that each of these approaches is successful in dealing with the text in one or more aspects while failing in one or more aspects. Consequently, the criticism whether the approach possesses the text, or that the text rejects this possession, r

... Show More
View Publication Preview PDF
Publication Date
Mon Sep 30 2002
Journal Name
Iraqi Journal Of Chemical And Petroleum Engineering
Kinetics of Hydrodesulfurization Catalyst Rejuvenation Process
...Show More Authors

View Publication Preview PDF
Publication Date
Wed Jan 01 2014
Journal Name
Journal Of The College Of Languages (jcl)
The Use of Idioms in Advertisements
...Show More Authors

The power of advertising is immense. Producers of commercial goods and services routinely pour vast sums into promoting their wares through the advertising media, knowing  that a successful campaign can win them vital market share , and that failure to advertise effectively can have devastating results . The function of advertising is promotional ; to draw our  attention. In order  to achieve this function it must reach its target  audience , then capture that audience with a message that is both attractive and memorable.

         From a linguistic point of view, the language of advertising must be informative, instructive , distinctive and persuasive . It must employ&nb

... Show More
View Publication Preview PDF
Publication Date
Tue Mar 03 2009
Journal Name
Journal Of Economics And Administrative Sciences
Comparison of repetitive estimation methodsSelf-data
...Show More Authors

In this study, we review the ARIMA (p, d, q), the EWMA and the DLM (dynamic linear moodelling) procedures in brief in order to accomdate the ac(autocorrelation)  structure of data .We consider the recursive estimation and prediction algorithms based on Bayes and KF (Kalman filtering) techniques for correlated observations.We investigate the effect on the MSE of  these procedures and compare them using generated data.

View Publication Preview PDF
Crossref
Publication Date
Wed Jan 14 2009
Journal Name
Diala , Jour
Synthesis of Barbiturate Derivatives from Imines
...Show More Authors