- All Journals
- Al-Qadisiyah University
- Basrah University
- Kirkuk University
- Mosul University
- The Iraqi Borad for Medical Specialization
- University of Anbar
- University of Technology
- Al Mustafa University
- Al-Zahraa University for Women
- Alnoor University
- Kunooz University
- Misan University
- Ninevah University
- Tikrit University
- University of Al-Hamdaniya
- University of Kerbala
The Effect of some Natural Admixtures on the setting Time of Iraqi Plaster of Parts | ||
| Engineering and Technology Journal | ||
| Volume 24, Issue 9, October 2005, Pages 380-394 PDF (1.24 M) | ||
| DOI: 10.30684/etj.24.9A.2 | ||
| Authors | ||
| قيس جواد فريح; وليد عبد الرزاق القيسي; لمى سعدي عبد الخالق | ||
| Abstract | ||
| The effect of using some kinds of natural admixtures on the setting time of one type of Iraqi gypsum has been studied by using lime stone, calcium carbonate, hydrated lime, white kaolinite and metakaolin. Results showed that the setting time of gypsuın can be increased from 5 min. to 10min., 12min., 27min., 9min., and 12min. by using 15% lime stone, 10% CaCO), 15% hydrated lime, 5% kaolinite and 5% metakaolin respectively. Results also showed that by using a specific weight percent of adding lime stone, CaCO, and hydrated lime the compressive strength of gypsum increasing by 5%, 9.78%, 34.1% respectively, and decreasing for some weight percent of adding by 13.64% and 19% for kaolinite and metakaolin respectively. An obvious decrease in the modulus of rupture of gypsum can be observed when using the above admixtures. | ||
|
Statistics Article View: 95 PDF Download: 105 |
||