A lecturer from the Faculty of Engineering at the University of Kufa is a Member of the Committee Discussing a Master’s Thesis, Majoring in Civil Engineering

The lecturer at the Faculty of Engineering, University of Kufa, Assistant Professor Dr. Muslim Abdul-Ameer Al-Kannoon was chosen as a member to discuss the master’s thesis entitled: “Improving the shear and bending behavior of lightweight self-compacting concrete using near-surface stiffeners” for the student Sarab Amir Khan from the Department of Civil Engineering, University of Babylon, majoring in Construction Engineering.
In addition to Dr. Kannoon’s membership, the discussion committee consisted of both Assistant Professor Dr. Laith Abdel Bari Abboud from the College of Engineering, Al-Mustansiriya University as Chairman, Assistant Professor Haider Muhammad Majeed from the College of Engineering, University of Babylon as a member, Assistant Professor Jinan Jawad Hassan from the College of Engineering as a member and supervisor, and Assistant Professor Dr. Rafeh Failah Hassan from the Faculty of Engineering, Babel University, as a member and supervisor.
The study aims to know the performance of lightweight Self-Composted Aggregate (LWSCC) made from (25%, 50%, 75%, 100%) of Lightweight Expanded Clay Aggregate (LECA) as a volume replacement ratio for normal weight coarse aggregates. Dr. Khannoon said that with the development of concrete technology, innovative types of concrete have appeared, and lightweight self-compacting concrete is one of the advanced concrete that requires large-scale investigations of its construction and construction behavior.
The researcher indicated that ten mixtures are made, five of which contain (LECA) with (25%, 50%, 75%, and 100%) and without polypropylene fibers. As for the other five mixtures, they contain (LECA) in the same proportions and a percentage of (0.1%) of polypropylene fibers. The soft and hardened properties were examined by a series of test methods including precipitation inspection, cm T50, L-box, V-funnel, soft density, compressive strength, split tensile strength, bending strength, water absorption, and UPV testing with keeping the value of precipitation for all mixtures at (665-731) mm.
The results showed that the soft density of (LWSCC) was variable from 1956 – 2475 kg / m3 which decreased with increasing (LECA) content. As the percentage of (LECA) increases, the funnel flow time V increases while T50 decreases, while the two increase when using polypropylene fibers. The results revealed that the use of lightweight expanded clay aggregate (LECA) as an alternative to coarse aggregate in self-stacking concrete leads to reduced compressive strength, cleavage tensile strength, flexural tensile strength, and ultrasound velocity.
After discussing the student and listening to the defense of her research, the committee agreed to accept the thesis with a valuing of excellence.