4rth International Balkans Conference on Challenges of Civil Engineering http://dspace.epoka.edu.al/handle/1/1921 2026-04-16T17:54:28Z 2026-04-16T17:54:28Z Magana Aliyu, Muhammad Adamu, Musa http://dspace.epoka.edu.al/handle/1/1947 2021-03-25T14:47:49Z 2020-12-18T00:00:00Z

Study of Microstructure of Waste Tyre Ash (WTA) Concrete Using the Scanning Electron Microscopy (SEM) and X – ray Diffraction (XRD) Techniques Magana Aliyu, Muhammad; Adamu, Musa This paper reports the findings of an investigation into the microstructure of WTA – Concrete. The WTA was obtained by open burning of waste tyre slices to a temperature of about 5000C for about five (5) hours at the local open burning sites in Kano. And after allowing to cool, it was sieved through 75 µm BS Sieve and characterized. The ash was subjected to chemical composition analysis using the X-Ray fluorescence (XRF) analytical method using the X –Ray spectrometer machine. The investigation was carried out on a concrete of 29 N/mm2 compressive strength, Water – cement ratio (w/c) of 0.65 and slump range of 10 – 50mm. The microstructure assessment was conducted on the concrete at WTA replacement levels of 0, 5, 10, 15, 20, 25, and 30% of cement weight, respectively to determine the influence of WTA on the microstructure of WTA – Concrete using SEM and XRD techniques. Both SEM analysis and XRD results of WTA – concrete indicated the occurrence of pozzolanic reaction between WTA and cement and that the WTA has more porous micro-structure than OPC concrete especially at hig

2020-12-18T00:00:00Z Luga, Erion Mustafaraj, Enea Lika, Ervis http://dspace.epoka.edu.al/handle/1/1946 2021-03-25T14:45:35Z 2020-12-18T00:00:00Z

Behavior of RC frames under quasi-static diagonal loads Luga, Erion; Mustafaraj, Enea; Lika, Ervis The aim of this investigation is to analyze the mechanical behavior of reinforced concrete frames under diagonal loads. The study provides a combination of analytical and experimental work related to the quasi-static diagonal loading of the reinforced concrete frames. The analytical modeling of the RC frames was performed in ETABS software on a real scale frame, whereas the experimental test was performed on a RC frame of a scale 1/3 of the analytical model. The load displacement curves were built from both the investigation methods and the maximum strength, yielding point, maximum displacement parallel and perpendicular to the loads, Modulus of Elasticity, and ductility factor (Rµ) of the RC frames were obtained and analyzed.

2020-12-18T00:00:00Z Keçi, Julinda http://dspace.epoka.edu.al/handle/1/1945 2021-03-01T19:14:10Z 2020-12-18T00:00:00Z

Public-Private Partnerships in Albania: From the Legislative Provisions to Risk Management Keçi, Julinda

2020-12-18T00:00:00Z Mustafaraj, Enea Yardim, Yavuz Corradi, Marco http://dspace.epoka.edu.al/handle/1/1944 2021-03-01T19:12:45Z 2020-12-18T00:00:00Z

Polypropylene reinforced mortar coating for improvement of unreinforced masonry (URM) shear resistance Mustafaraj, Enea; Yardim, Yavuz; Corradi, Marco

2020-12-18T00:00:00Z