The Department of Materials Engineering / University of Technology awards a master's degree
The Department of Materials Engineering at the University of Technology awarded a master’s degree to student Reem Thamer Salman, Department of Materials Engineering/ University of Technology, for her tagged thesis.
"Improvement of Cement Mortar Using Ceramic Self-Healing Materials"
The discussion took place in the Graduate Studies Hall in Building B in the department on Monday 4/10/2021, and the discussion committee consisted of Messrs:
1. Asst. Prof .Dr. Hana Arir Smeij, President
2.Asst. Prof .Dr. Zainab Hashem Mahdi Member
3. Lect.Dr Ahmed Hussein Ali Member
4.Prof Dr. Farhad Muhammad Othman is an honorable member
5. Prof. Dr.Alaa Aladdin Abdel Hamid is an honorable member
As well as evaluating the thesis scientifically by Prof. Dr.Muhammad Mansour Kadhim/ University of Babylon/ College of Materials Engineering and Prof. Dr.Basma Muhammad Fahd/Al-Mustansiriya University/College of Engineering/Department of Materials Engineering, and linguistically byLect.Dr. Naseer Abdul-Hussein Nasser/ University of Technology/ Materials Engineering Department.
Abstract:
The main purpose of this work is treating concrete cracks with autonomous self-healing and manufacturing microcapsules suitable for the previous purpose. This can be achieved through: 1- Using (Nano-SiO2, or Nano-SiC with cement) (as a healing material) in the heart of the manufactured capsule and using (Polystyrene) to encapsulate the microcapsules. 2 - manufacturing microcapsules by Pelletization (Fluidized bed coating). -3Inserting the microcapsules into concrete in different weight proportions.4- Make a small crack and evaluate the efficiency of the self-healing mechanism with these additives in the concrete. 5- Healing products are verified by performing diagnostic tests like SEM, XRD, EDS. The results showed the manufacture of microcapsules of appropriate size compared to other methods. The results of the tests for insert the capsules inside the concrete showed a significant improvement in the mechanical and physical properties. 100% complete incision healing was observed for samples containing microcapsules and by SEM, EDS, and XRD test, the microstructure became more efficient.
After the discussion committee recorded its observations on the thesis, which were divided between explanation, correction and the student’s defense of her message and the discussion ended, the committee decided to evaluate the thesis, and decided to grant the student a master’s degree with a Pass grade.
