Microstructural Characteristics, Modeling of Mechanical Strength and Thermal Performance of Industrial Waste Glass Blended Concrete
Article 2022 en
Authors
MY
Moruf Olalekan Yusuf
KA
Khaled A. Alawi Al-Sodani
AA
Adeshina Adewale Adewumi
Abstract
1 min read
The need to get rid of solid waste in the environment necessitates the incorporation of waste glass powder (WGP) in mortar and concrete. The blending of WGP (G) with ordinary Portland cement (OPC) is a valorization technique that is not only cost efficient but also environmentally friendly. The replacement level is denoted as CxG10−x, where x is 0–20 wt.% at an interval of 5 wt.% in mortar (w/b = 0.4) and 0, 10, 20 and 30 in concrete (w/b = 0.42). The study investigates the effects of glass on the setting, workability, thermal resistance, microstructure, mineral phases and bond characteristics of silicon and hydroxyl-based compounds and C-O vibrations. It also provides the model equations for strength characteristics in terms of OPC, G and ages in mortar and concrete on one hand and investigates the residual strength and density of glass blended concrete at elevated temperature (550 °C) on the other. It is found that glass enhances the workability, reduces the setting time and density and enhances the residual strength and density of concrete. The presence of glass leads to the formation of coesite and microstructural distortion and decreases the Ca/Si ratio. Besides, the bond characteristics of the binder are significantly affected, while the thermal residual strength capacity in glass blended concrete (C80G20) is 40.4% and 75.14% lower than that in OPC concrete (C100G0) because of the low thermal conduction of glass particles. The optimum glass content in mortar and concrete to produce 33 MPa (28 days) and 47 MPa (90 days) is found to be 10 wt.% and 20 wt.%, respectively.
Moruf Olalekan Yusuf, Khaled A. Alawi Al-Sodani, Ali Alateah, Mohammed M. H. Al-Tholaia, Adeshina Adewale Adewumi, Azeez Oladipupo Bakare, Abdullahi Kilaco Usman, Ibrahim Momohjimoh
Ali Alateah, Khaled A. Alawi Al-Sodani, Moruf Olalekan Yusuf, Adeshina Adewale Adewumi, Mohammed M. H. Al-Tholaia, Azeez Oladipupo Bakare, Ibrahim Momohjimoh, Abdullahi Kilaco Usman
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