Professor Dr. Abdul Qadir Ismail Abdul Wahab Al-Hadithi – is one of the teaching staff at the Department of Civil Engineering - College of Engineering - University of Anbar - participated  as member  in the public discussion of the master’s student  Roaa Qasim Fawzi  from the Department of Civil Engineering - College of Engineering - University of Baghdad about her dissertation entitled: -

Effect of recycled coarse aggregate on some properties of No-fine aggregate concrete

The discussion of the dissertation took place in the hall of the Professor Dr. Khaled Shaker in the Department of Civil Engineering - College of Engineering

university of Baghdad, on Wednesday, 6/14/2023.

The study dealt with the production of several concrete mixtures of concrete free of fine aggregate and used for recycled aggregate produced from crushing the remains of high-performance powder concrete as coarse aggregate. Silica ash was used as an additive, and polypropylene fibers were used to reinforce this type of concrete. Many laboratory tests were conducted on the concrete produced, such as density and absorption. Many mechanical tests were also conducted on concrete, such as compressive strength, flexural strength, and tensile strength by splitting. After analyzing the results, drawing relationships, and discussing the outcomes of the study, it was found that adding silica ash had a role in increasing density, while polypropylene fibers had a role in improving the mechanical properties of the concrete used for recycled aggregate as coarse aggregate.