Evaluating the properties and environmental impacts of nano composites in geopolymer concrete paver blocks
Pachaivannan Partheeban,Chella Gifta Christopher,Andiappan Kavitha,Breetha Yesudhas Jayakumari,Madhavan S.
Abstract
This research examines the use of novel nanomaterials to improve the strength and quality of geopolymer concrete. Nano silica is the most commonly used nanoparticle and it increases concrete strength. Nano-titanium dioxide (TiO2) improves the mechanical properties and it is used to reduce air pollution and self-cleansing the atmosphere. Nano silica and nano-titanium dioxide are replaced by 1% of the total weight of fly ash and paver blocks are cast for M40 grade concrete with different fly ash replacement and nano silica combinations (0.25% TiO2 + 0.75 % SiO2), (0.50% TiO2 + 0.50% SiO2), (0.75% TiO2 + 0.25% SiO2). These paver blocks increase the compressive strength with the increase in age and reduces the various environmental issues. Microstructural analysis shows the interaction between nanoparticles and geopolymer concrete reveals a higher filling effect. The air quality of the paver block has been monitored using an IoT device designed for this application. It is found that the air pollutants are reduced up to 30 percent at the center of the paver block. The combination of 0.75% nano-silica and 0.25% nano-titanium dioxide was optimal. It can be used to achieve higher compressive strength and it purifies the atmospheric air, reducing harmful air pollutants and enhancing environmental protection.
Pachaivannan Partheeban, Breetha Yesudhas Jayakumari, Madhavan S. — Department of Civil Engineering, Chennai Institute of Technology, Kundrathur, Chennai – 600 069, India
Chella Gifta Christopher — Department of Civil Engineering, National Engineering College, Kovilpatti, India
Andiappan Kavitha — Department of Chemistry, Chennai Institute of Technology, Kundrathur, Chennai – 600 069, India
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