The surface hardness measurement of stone and improved die stone after the addition of a mixture of chemical additives with different proportion
المؤلفون المشاركون
al-Haddad, Anam Sh.
al-Huwaizi, Raid F.
al-Huwaizi, Abbas F.
المصدر
Journal of Baghdad College of Dentistry
العدد
المجلد 30، العدد 1 (31 مارس/آذار 2018)، ص ص. 1-4، 4ص.
الناشر
تاريخ النشر
2018-03-31
دولة النشر
العراق
عدد الصفحات
4
التخصصات الرئيسية
الملخص EN
Background: Incorporation of chemical additives has long been a technique used to improve properties of the gypsum products.
The purpose of this work was to study the effects of adding a combination of gum Arabic and calcium hydroxide to a type III dental stone and type IV improved die stone with different proportion.
The effect on water/powder ratio, and surface hardness was determined.
Material and method: Both material stone and die stone were blended with two proportion of additives so that each material was mixed twice but with different proportion of gum Arabic (0.1% and 0.2%) and calcium hydroxide (0.5 % and 0.3%).
Data for hardness were subjected to two-way analysis of variance.
Results: The results revealed that the chemical additives were reduced the water requirements of gypsum products so that the reduction of water lead to increase the density of mixture that sets harder.
For type III dental stone the additives significantly improved the surface hardness, while for type IV improved die stone the surface hardness was not enhanced except it was designed to be mixed at low water/powder ratio, and in some instances a reduction in hardness was observed, especially at the most reduced water / powder ratio (0.18)
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
al-Haddad, Anam Sh.& al-Huwaizi, Abbas F.& al-Huwaizi, Raid F.. 2018. The surface hardness measurement of stone and improved die stone after the addition of a mixture of chemical additives with different proportion. Journal of Baghdad College of Dentistry،Vol. 30, no. 1, pp.1-4.
https://search.emarefa.net/detail/BIM-838729
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
al-Huwaizi, Abbas F.…[et al.]. The surface hardness measurement of stone and improved die stone after the addition of a mixture of chemical additives with different proportion. Journal of Baghdad College of Dentistry Vol. 30, no. 1 (Mar. 2018), pp.1-4.
https://search.emarefa.net/detail/BIM-838729
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
al-Haddad, Anam Sh.& al-Huwaizi, Abbas F.& al-Huwaizi, Raid F.. The surface hardness measurement of stone and improved die stone after the addition of a mixture of chemical additives with different proportion. Journal of Baghdad College of Dentistry. 2018. Vol. 30, no. 1, pp.1-4.
https://search.emarefa.net/detail/BIM-838729
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes appendices : p. 4
رقم السجل
BIM-838729
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر