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Article
The Effect of Addition of Combination of Plasma Treated Polyester and Polyamide Fibers on Surface Roughness and Some Mechanical Properties of Heat Cured Acrylic Resin

Authors: Abdalbasit A. Fatihallah عبدالباسط عبدالفتاح --- Ghasak H. Jani --- Zaynab S. Abdullah
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2018 Volume: 30 Issue: 1 Pages: 12-16
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Poly (methyl methacrylate) has several disadvantages (poor mechanical properties) like impact and transverse strength. In order to overcome these disadvantages, several methods were used to strengthen the acrylic resin by using different fibers or fillers. This study was conducted to evaluate the effect of Plasma treatment of the fiber on mechanical properties Poly (methyl methacrylate) denture base material.Materials and methods: Specimens were prepared from poly methyl metha acrylic (PMMA) divided according to present of fiber into 4 groups (first group without fiber as control group, second group with Plasma treated polyester fibers, third group with Plasma treated polyamide fibers and fourth group Plasma treated combination of polyester and polyamide fibers. The samples to be treated with oxygen gas plasmaResults: the results show that the highest mean values for all tests included in the study appeared in group IV (Plasma treated combination of polyester and polyamide fibers) except for the surface roughness test the highest mean values found in group III (Plasma treated polyamide fibers, and only polyamide fiber slight improved roughness and other group have no effect on surface roughnessConclusion The addition of plasma treated fiber ( polyester, polyamide and combination of both fiber) improve transverse, impact strength and hardness properties of denture base material and has no effect on surface roughness


Article
A comparative study to evaluate the efficiency of two different chemical solvents used in softening gutta-percha.

Author: Dr. Firas I.Hani Ismael, B.D.S.,M.Sc.* د. فراس هاني
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2009 Volume: 6 Issue: 3 Pages: 224-228
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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AbstractConventional root canal treatment despite having a reported high success rate may not invariably lead to the desired healing response in clinical practice because of shortcoming in the treatment. Different criteria have been used to define success and failure; mostly dependent on both clinical and radio-graphic findings and therefore sometimes there is a need to re-treat the root canal treated teeth.This study was done on twenty single rooted teeth, which divided equally and randomly into two groups depending on the solvent used, the first group was tested with the use of chloroform and the second group was tested with the use of eucalyptol oil.The chloroform showed the lowest mean of penetration time and was more efficient in softening the gutta-percha than the eucalyptol oil.Chloroform softened gutta-percha and ZOE sealer more statistically efficient than the eucalyptol oil.


Article
Growth and development of roots of Zea mays in columns different soil texture treated with a conditioner
نمو وتطور المجموع الجذري لنبات الذرة الصفراء في أعمدة تربة مختلفة النسجة معاملة بمجروش كوالح الذرة الصفراء

Author: M. K. Abbas ماجد خضير عباس
Journal: ANBAR JOURNAL OF AGRICULTURAL SCIENCES مجلة الأنبار للعلوم الزراعية ISSN: PISSN: 19927479 / EISSN: 26176211 Year: 2007 Volume: 5 Issue: 2 Pages: 12-19
Publisher: University of Anbar جامعة الانبار

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Abstract

The aim of this research is to know effect of adding a corn cobs after fermentation in soil on the growth and development of root part of zea mays in soil columns having two soils differ in their texture, one was sandy and the other was silt clay. The soil was put in plastic pots and five zea mays seeds were added in each pot and after seed growth, one plant was left in each pot. Weight of vegetative growth and dry roots. The interval between measured and the other was fifteen days.The result showed that in the soil treated with the conditioner the percentage of pores increased while the values of bulk density and resistance to penetration decreased that reflected on the vegetative and root growth of zea mays plant, it was 175.16 g the end growth season in the soil columu and 170.11 g in the soil columu in the weight of vegetative growth, while the dry weight of root (28.74, 27.32) g in each pot respectively. Comparing with soil columus treated with the conditioner, there was un similar increase. It was (183.82, 195.65) g in dry vegetative growth and (31.75, 35.27) g/ pot as dry root growth respectively.It may be said that there was clear effected of addition of corn cobs as a conditioner of root growth followed by positive vegetative growth during growth season which may be reflected yield of zea mays.

يهدف هذا البحث إلى معرفة تأثير مجروش كوالح الذرة الصفراء بعد تخميرها في التربة في نمو وتطور المجموع الجذري لنبات الذرة الصفراء في أعمدة تربة ذات نسجتين مختلفتين احدهما رملية والأخرى طينية غرينية. وباستخدام أعمدة بلاستيكية، عبئت بمواد التربتين. زرعت 5 بذور نبات الذرة الصفراء لكل عمود خفت إلى نبات واحد بعد عملية الإنبات. وقد خصص ثلاثون مكررا" لكل تربة معاملة من معاملات النسجة الاثنين. تضمنت الدراسة قياسات أوزان النمو الخضري والجذور الجافة، تراوحت الفترة بين قياس وأخر خمسة عشر يوما".بينت نتائج الدراسة بان التربة المعاملة بمجروش الكوالح زادت قيمة النسبة المئوية للمسام وانخفضت قيمتي الكثافة الظاهرية ومقاومة الاختراق، مما انعكس ذلك على النمو الخضري والجذور لنبات الذرة الصفراء، إذ بلغت عند نهاية موسم النمو في عمود تربة (175.16) غم وفي عمود تربة (170.11 ) غم بالنسبة إلى وزن النمو الخضري، بينما كان وزن الجذور الجاف ( 28.74 و 27,32 ) غم لكل عمود، على التوالي، بالمقارنة مع أعمدة التربة التي أضيف لها المجروش، فقد لوحظ هناك زيادة متباينة، إذ بلغت (183.82 و 195.65) غم كنمو خضري جاف و (31.75 و 35.27) غم/عمود كنمو مجموع جذري جاف، على التوالي.يتبين من ذلك بان هناك تأثير واضح من إضافة كوالح الذرة الصفراء المجروشة كمحسن في نمو الجذور وبالتالي على النمو الخضري خلال موسم النمو، وسوف ينعكس ذلك على حاصل محصول الذرة الصفراء.


Article
Fracture resistance of endodontically treated premolars with extensive MOD cavities restored with different composite restorations (An In vitro study)

Authors: Aws H. Atiyah اوس عطيه --- Luma M. Baban لمى بابان
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2014 Volume: 26 Issue: 1 Pages: 7-15
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: This in vitro study evaluated the fracture resistance of weakened endodontically treated premolars with class II MOD cavities restored with different composite restorations (Low-shrinkage Filtek P90, nanohybrid Filtek Z250 XT and SDR bulk fill). The type and mode of fracture were also assessed for all the experimental groups.Materials and Method: Fifty human adult maxillary premolar teeth were selected for this study. Standardized extensive class II MOD cavities with endodontic treatment were prepared for all teeth, except those that were saved as intact control. The teeth were divided into five groups of ten teeth each (n=10): (Group 1) intact control group, (Group 2) unrestored teeth with endodontic treatment, (Group 3) restored with (Filtek Z250 XT), (Group 4) restored with SDR bulk-fill flowable composite and (Group 5) restored with Filtek P90 composite. All specimens were subjected to compressive axial loading until fracture in a universal testing machine. The data were statistically analyzed using one-way ANOVA test and LSD test. Macroscopic fracture type were observed and classified into favorable and unfavorable. Specimens in group 3, 4 and 5 were examined by stereomicroscope at a magnification of 20× to evaluate the mode of failure into adhesive, cohesive or mixed.Results: The mean fracture load was (1.123 Kn) for group 1, (0.545 Kn) for group 2, (0.687 Kn) for group 3, (0.799 Kn) for group 4 and (0.672 Kn) for group 5. Using one way ANOVA test a highly significant difference (P < 0.01) were found among all groups. The use of bulk-fill flowable composite improved the fracture resistance significantly in comparison to silorane and non-significantly to Filtek Z250 XT. Filtek Z250 XT showed better improvement in fracture resistance but with no significant differences in comparison to Filtek P90 composite restorations. The type of failure was unfavorable for all the restored groups.Conclusion:All experimental composite restorations showed significant improvement in the resistance to cuspal fracture in comparison to unrestored one. However, under the conditions of this study, direct composite restorations should be considered as a valid interim restoration for weakened endodontically treated teeth before cuspal coverage can be provided.


Article
FEMORAL NECK FRACTURE TREATED BY HEMIARTHROPLASTY, A COMPARATIVE STUDY BETWEEN WATSON-JONES AND MOORE APPROACHES

Authors: Ali A Alwan Al-Tamimi --- Qahtan Maaroof Rahman --- Warzer Fatah Shali
Journal: Basrah Journal of Surgery مجلة البصرة الجراحية ISSN: 16833589 / ONLINE 2409501X Year: 2015 Volume: 21 Issue: 1 Pages: 43-48
Publisher: Basrah University جامعة البصرة

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Abstract

Ali A Alwan Al-Tamimi*, Qahtan Maaroof Rahman# &Warzer Fatah Shali@*MB,ChB, FICMS (Orth.), Lecturer, College of Medicine; University of Sulaimaniyah. # MB,ChB, Diploma (Orth.), Orthopaedics surgeon, Azadi teaching hospital; Kirkuk, Iraq. @MB,ChB, Diploma (Orth.), FRCS (London), Head of Orthopaedic Department, Sulaimaniyah Teaching Hospital, IRAQ.Abstract The treatment options for fractures of the femoral neck whether displaced or nondisplaced, are osteosynthesis, hemiarthroplasty, and total joint arthroplasty. Numerous reports have favored osteosynthesis over hemiarthroplasty. However, the high rates of non-union and a vascular necrosis associated with osteosynthesis, has led others to advocate femoral head replacement over internal fixation. This is a prospective study carried on 96 patients (36 male and 60 female) having intracapsular femoral neck fractures who were admitted to the department of the orthopaedic surgery in Sulaimaniyah Teaching Hospital between September 2008 and September 2013. The patient's ages ranged from 62-88 years (average 71 years). All patients were treated by hip hemiarthroplasty (partial hip replacement) with two types of approaches. Watson Jones (antero-lateral) approach was used in 40 cases (41.7%) and Moore (posterior) approach in 56 cases (58.3%). The aim of this study is to compare the outcome between these two approaches peroperatively and postoperatively to determine which approach is better for hip hemiarthroplasty. The outcome of these two approaches were studied and analyzed monthly and the results of both approaches compared with each other and compared also with other studies.The duration of follow-up ranged between 12-48 months with average of 34 months. In conclusion, rate of dislocation, infection, deep vein thrombosis and sciatic nerve injury were more in Moore approach, while liability to fracture femur during operation and time of surgery were more in Watson-Jones approach.


Article
Evaluation The Quality of Raw and Treated Water for Number of Water Treatment Plants in Baghdad, Using a Water Quality Index
تقييم نوعية المياه الخام و المعالجة لعدد من محطات معالجة المياه في بغداد ، باستخدام مؤشر جودة المياه

Author: Zainab Bahaa Mohammed
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2015 Volume: 33 Issue: 6 Part (A) Engineering Pages: 1429-1441
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

Laboratory tests were conducted to evaluate the quality of drinking water on some water treatment plants in Baghdad (AlKarkh, Shark Dijla, AlWathba, and Alkramh), the samples taken from raw (Tigris River) and treated water. The measurements of some physical and chemical properties taken every month and for eight years in order to evaluatethe drinking water quality and efficiency of these plants. The quality of drinking water was calculated byusing Canadian model index (Canadian Council of Ministers of the Environment) in water quality evaluation, as contributed thirteen variables in the index calculation: the temperature of the water, turbidity, pH, total hardness (as CaCO3), magnesium, calcium, sulfate, iron, fluoride, Nitrate, chloride, color and conductivity. The sampleswere taken from the treatedwater that outside from the plant from 2005 to 2013. The study showed that the range of water quality index for raw water is (51-57) and can be classified as a bad water and needs advanced treatment, while the water quality index of treated water was (86, 81,80,80) for (AlKarkh, Shark Dijla, AlWathba andAlkramh) respectively. The water quality index of treated water of (AlKarkh, Shark Dijla, AlWathba and Alkramh) can be classified as Category II ( good).

أجريت الفحوصات المختبرية لتقييم نوعية مياه الشرب في بعض محطات معالجة المياه في بغداد (الكرخ، شرق دجلة، الوثبة، الكرامة)، وتم سحب عينات أخذت من الخام (نهر دجلة) والمياه المعالجة. قياسات بعض الخصائص الفيزيائية والكيميائية اخذت كل شهر ولمدة ثماني سنوات من أجل تقييم نوعية مياه الشرب وكفاءة هذه المحطات. تم حساب نوعية مياه الشرب باستخدام مؤشر النموذج الكندي (المجلس الكندي لوزراء البيئة) في تقييم نوعية المياه، كما ساهمت ثلاثة عشر متغير في حساب المؤشر: درجة حرارة مئوية الماء، العكارة ، ودرجة الحموضة، والصلابة الكلية (كما كربونات الكالسيوم CaCO3)، المغنيسيوم ، الكالسيوم ، كبريتات الحديد ، الفلوريد ، نترات ، كلوريد ، اللون و الموصلية. تم أخذ عينات من المياه المعالجة الخارجة من المحطات من عام 2005 إلى عام 2013. وأظهرت الدراسة أن نطاق مؤشر جودة المياه للمياه الخام هو (51-57)، ويمكن أن تصنف على أنها مياه سيئة وانها بحاجة معالجة متقدمة، في حين كان مؤشر جودة المياه من المياه المعالجة (86، 81،80،80) ل (الكرخ، شرق دجلة، الوثبةوالكرخ) على التوالي. ويمكن تصنيف مؤشر جودة المياه من المياه المعالجة من (الكرخ، شرق دجلة، الوثبة والكرخ) من الفئة الثانية (جيد).


Article
Evaluation healing of jejunal anastomosis in preoperative dexamethasone treated dogs
تقييم التئام تفمم الصائم في الكلاب المعاملة بالدكساميثازون قبل الجراحة

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The objective of this study is to evaluate the healing process of jejunal anastomosis by the aid of histopathology andmeasurement of bursting pressure of anastomosis site in thirty two adult preoperatively with dexamethasone. The animals wererandomly divided into 2 equal groups: Group 1: consists of 16 dogs underwent apposition end-to-end jejunal anastomosisusing simple interrupted suture technique which in turn divided into 2 subgroups: subgroup A: consists of 8 dogs treatedpreoperatively for 15 days with dexamethasone at a dose of (0.2mg/kg) given I/M. Subgroup B: control group consists of 8dogs not treated with dexamethasone. Group 2: consists of 16 dogs underwent inverted end-to-end jejunal anastomosis usingcontinuous Lembert suture pattern that also divided into 2 subgroups: subgroup A: consists of 8 dogs treated preoperatively for15 days with dexamethasone at a dose of (0.2mg/kg) given I/M. subgroup B: control group consists of 8 dogs not treated withdexamethasone. The result of bursting pressure measurement showed higher tensile strength in the control groups (445±9.6) incomparison with the steroidal groups (255±25.3) for both techniques. The histopathological study showed that the healing was good in all groups but the rupture that occur due to shedding the pressure lead to non discrimination between which is better in terms of healing. Massonʼs trichrome showed that collagen content of subgroups taking dexamethasone was lower than that of subgroups not treated with dexamethasone.

أجريت الدراسة على ٣٢ حيوانا من الكلاب البالغة المحلية تم تقسيمھا عشوائيا و بالتساوي الى مجموعتين: المجموعة الاولى: تتالف من ١٦ كلبا اجريت عليھا عملية استئصال وتفمم الامعاء باستخدام طريقة نھاية الى نھاية وبتقنية تقابل الطبقات وباستخدام طريقة الخياطة ضمت ٨ كلاب تم اعطاءھا عقار الدكساميثازون :A البسيطة المتقطعة وتنقسم ھذة المجموعة الى مجموعتين فرعيتين: المجموعة الفرعية ضمت ٨ كلاب :B لمدة ١٥ يوم قبل العملية الجراحية وبجرعة ( ٠,٢ ملغرام/كيلوغرام) تعطى عن طريق العضلة. المجموعة الفرعية وتعتبر مجموعة سيطرة (بدون اعطاء عقار الدكساميثازون). المجموعة الثانية: تتالف من ١٦ كلبا اجريت عليھا عملية استئصال وتفمم الامعاء باستخدام طريقة نھاية الى نھاية وبتقنية الحافات المقلوبة للداخل وباستخدام طريقة الخياطة اللمبرت المستمرة وتنقسم ھذة ضمت ٨ كلاب تم اعطاءھا عقار الدكساميثازون لمدة ١٥ يوم قبل العملية :A المجموعة الى مجموعتين فرعيتين: المجموعة الفرعيةضمت ٨ كلاب وتعتبر مجموعة سيطرة :B الجراحية وبجرعة ( ٠,٢ ملغرام/كيلوغرام) تعطى عن طريق العضلة. المجموعة الفرعية (بدون اعطاء عقار الدكساميثازون). اظھرت نتائج قياس قوة الضغط الانفجاري ان قوة الشد في منطقة التفمم كانت عالية في مجاميع السيطرة بينما كانت واطئة في المجاميع التي تم اعطاءھا عقار الدكساميثازون وان معدل الضغط الانفجاري كان قليل في كل المجاميع التي


Article
Evaluation the Quality of Raw and Treated Water for Number of Water Treatment Plants in Baghdad, by Using Canadian Model for a Water Quality Index

Author: Masood Muhsin Hazzaa
Journal: Tikrit Journal of Engineering Sciences مجلة تكريت للعلوم الهندسية ISSN: 1813162X 23127589 Year: 2017 Volume: 24 Issue: 3 Pages: 84-90
Publisher: Tikrit University جامعة تكريت

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Laboratory tests on some physical and chemical properties were conducted to evaluate the quality of drinking water on some water treatment plants in Baghdad (Al-Qadisiya, Al-Dora, Al-Wahda and Al-Rasheed), these samples were taken from raw and treated water. The measurements of taken every month and for eight years in order to evaluate the drinking water quality and efficiency of these plants. The quality of drinking water was calculated by using Canadian model index (Canadian Council of Ministers of the Environment) in water quality evaluation, as contributed thirteen variables in the index calculation: the temperature of the water, turbidity, pH, total hardness (as CaCO3), magnesium, calcium, sulfate, iron mg/L, fluoride, Nitrate, chloride, color, conductivity. The samples were taken from the treated water effluent from 2005 to 2013. The study showed that the range of water quality index for the raw water is (49-54) and can be classified as a bad water and it's needing advanced treatment, while the water quality index of treated water was (77,78, 70, 67) for (Al-Qadisiya, Al-Dora, Al-Wahda and Al-Rasheed) respectively. Therefore, the water quality index of treated water of (Al-Qadisiya, Al-Dora, Al-Wahda and Al-Rasheed) can be classified within the third category (moderate).


Article
Study the Effect of Low Level Laser (LLL) on the Histological Changes of Lymph Node Tissue in Mice Inoculated with Mammary Gland Carcinoma
دراسة تأثير ليزر واطئ القدرة (LLL) على التغيرات النسجيه لنسيج العقدة اللمفية في الفئران المحقونة بسرطان الغدة اللبنية

Authors: Ahmed Anwar Albir احمد انور البير --- Aida Z.Khalee عائده زكي خليل
Journal: Iraqi Journal of Cancer and Medical Genetics المجلة العراقية للسرطان والوراثة الطبية ISSN: 20786123 Year: 2012 Volume: 5 Issue: 1 Pages: 11-15
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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This study was conducted on normal mice. The mice were divided into three groups of five mice each (A,B and C ) and two control groups of three mice each. The second control group and the three other groups (A,B and C) of mice were inoculated with mammary gland carcinoma. After (11) days of successful tumour growth, the tumours appeared in different parts of the animal bodies in accordance with the gross observations. All the animal groups (A,B and C) under study were irradiated with laser in different duration times (1-3) weeks consecutively. According to the histological sections of the lymph nodes of the animals of the groups (A,B and C) the results showed various histological changes in the lymphocytes such as increased size and multiplication of the nuclei, cytoplasm cleavage in group (B) animals in comparison with the histological changes which were more abundant in the lymphocytes of the lymph nodes of group (C) animals that irradiated with laser of duration time of three weeks, whereas the histological changes that occurred in the lymphocytes of the lymph nodes of both group (A) animals which irradiated with laser of duration time of one week and the second control group of animals which inoculated with mammary gland carcinoma (non-irradiated with laser) were multiplication of the nuclei in some lymphocytes of the lymph nodes. The aim of this study was to evaluate the effect of low level laser (LLL) on the histological changes by stimulating the lymph node action in order to inhabit cancer cells activity.

اجريت هذه الدراسه على فئران سليمة قسمت الفئران الى ثلاثه مجاميع (A,B and C) تكونت كل مجموعه من خمسه فئران ومجموعتي حيوانات السيطره حيث تكونت كل منهما من ثلاثة فئران. تم حقن مجموعه حيوانات السيطره الثانيه (استخدمت كمؤشر للمقارنه ) وحيوانات المجاميع الثلاثة (A,B and C)بسرطان الغده اللبنيه. بعد مرور (11) يوما على نمو الورم , ظهرت الاورام في اجزاء مختلفه من اجسام الحيوانات استنادا الى المشاهدات العيانيه. كل حيوانات المجاميع الثلاثة موضوعة الدراسه (A,B and C) شععت بالليزر في مدد مختلفه تراوحت بين (1-3) اسابيع بصوره متعاقبه. استنادا الى فحص المقاطع النسجيه للعقد اللمفيه لحيوانات المجاميع الثلاثة (A,B and C ) اظهرت النتائج تغيرات نسجية متباينه في خلايا اللمفوسايت كزيادة حجم الانويه وانقسامها, انشطار السايتوبلازم في حيوانات المجموعه (B) مقارنه مع تلك التغيرات النسجية التي كانت اكثر وضوحا في خلايا اللمفوسايت للعقد اللمفيه في حيوانات المجموعه C)) والتي شععت بالليزر لمده ثلاثة اسابيع, في حين كانت التغيرات النسجيه التي ظهرت في خلايا اللمفوسايت للعقد اللمفيه في كل من حيوانات المجموعه (A) والتي شععت بالليزر لمدة اسبوع واحد وحيوانات السيطره الثانيه والتي حقنت بسرطان الغده اللبنيه ( الغير مشععه بالليزر) مقتصره في بعض الخلايا على انقسام الانويه. كان الهدف من هذه الدراسه هو معرفة تاثير ليزر واطئ القدرة على التغيرات النسجيه من خلال تحفيز نشاط العقده اللمفيه لغرض تثبيط نشاط الخلايا السرطانيه .


Article
سلوك أنواع مختلفة من الاسمنت المحلي والمستورد كمادة انهاء

Author: جبار علي لفته
Journal: Journal of University of Babylon مجلة جامعة بابل ISSN: 19920652 23128135 Year: 2014 Volume: 22 Issue: 3 Pages: 603-616
Publisher: Babylon University جامعة بابل

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Abstract

That is absolutely necessary and the need for and use of cement in the end it became necessary to conduct laboratory tests for this article to find out its mandate despite the fact that there is control of the quality of materials produced for this article in the labs .So I saw of national duty and humanitarian study of the properties of some types of cement and give guidance for users to choose the best quality by conducting laboratory tests to this article, so I took four samples of cement, two local (bridge and north) and the other imported from (the UAE and the Gulf) has been conducting chemical analysis and physicist, as shown in the table (1) and (2) The research has included conducting several tests of cement mortar to select four different types of cement for three mixing ratio as shown in Table (3), namely, (1:1.5), (1:2), (1:3) and water to cement ratio w/c=40% were examined operator of the mortar soft (flow and stiffness) and density of wetlands and absorption of age (3) days and the dry density of age (1) days compressive strength and tensile at old (7,28)days which tests in three treatments (with air, water and oven) has been screening in the laboratory of concrete/at technical institute Musayib, Results show that(flow=700mm) and stiffness primary device Viket (12) minutes and hardening the final (27) min and this is identical to the specifications Iraq's number(5) for the years (1984), corresponding to the specification of the (BS-146-1973) and (ASTM-C595-1985) and the compressive strength of age (28) days with water treatment was better to have reached (28.31 Mpa) and tensile strength of age (28) days with water treatmenteqal (5 Mpaacoording toIraq number (5) for the year 1984. So investors and users are advised to make sure of the type and quality of cement used in order to get high workability, high strength and high durability

بالرغم من أن هنالك سيطرة نوعية للمواد المنتجة لهذه المادة في المعامل. ات ألمختبريه لهذه المادة لمعرفة صلاحياتها الوطني والإنساني دراسة خواص بعض أنواع الاسمنت وإعطاء التوجيه للمستخدمين لاختيارلذا رأيت من الواجب أن الضرورة القصوى والحاجة لمادة الاسمنت واستعمالها في الإنهاء أصبح من الضروري إجراء الفحوص أفضل نوعيه من خلال إجراء الفحوصات ألمختبريه لهذه المادة لذا أخذت أربع نماذج من الاسمنت اثنان محليه (الجسر والشمالي) والأخرى مستوردة من (الإماراتي و والخليجي) حيث تم أجراء التحليل الكيميائي و الفيزيائي وكما مبين بالجدول (1) و(2).وقد تضمن البحث أجراء عدة فحوصات مختبرية لمونة السمنت للأربع الأنواع من السمنت بثلاثة نسب خلط وكما مبين بالجدول(3) وهي (1.5:1) ,(2:1) ,(3:1) وثلاثة معالجات( بالهواء, بالماء, بالفرن) وتم الفحص بعمر(7,28 يوم) وتم فحص عامل التشغيل (اللقوام والأنسيابو فحص الامتصاص والكثافة الرطبه والكثافة الجافة بعمر يوم وفحص الانضغاط لمكعبات (5*5*cm5) وبعمر (28,7يوم) وفحص الشد النماذج الجافه وكانت نسبة الماء (w/c) لجميع الخلطات(40%) وتم الفحص في مختبر الخرسانة للقسم المدني/المعهد التقني المسيب وقد كانت النتائج الاسمنت المستورد (الخليجي) أفضل النتائج حيث بلغ الأنسياب (flow=700mm) والتصلب الابتدائي بجهاز فليكات (12) دقيقه و التصلب النهائي (27) دقيقه وهذا مطابق للمواصفات العراقية رقم (5) لعام (1984) والمطابق للمواصفات البريطانية القياسية (B.C-146-1973) ومطابق للمواصفات الامريكيه (ASTM-C595-1985) ومقاومة الانضغاط بعمر ( 28يوم) والمعالجة بالماء قد بلغت (28.31 Mpa) ومقاومة الشد بعمر (28يوم)والمعالجة بالماء بلغت (5Mpa) وكانت مطابقة للمواصفات العراقية القياسية (5) لعام1984.لذا ننصح المستثمرين والمستخدمين الاسمنت المستعمل من اجل الحصول على قابلية تشغيل عاليه ومقاومه عاليه ومتانة عالية .

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