Cleaner production of concrete containing geopolymer materials used in road paving by laboratory examination by XRF

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Document Type : Original Article

Authors

1 Department of Civil Engineering, Chalous Branch, Islamic Azad University, Chalous, Iran

2 Department of Civil Engineering, Lahijan Branch, Islamic Azad University, Lahijan, Iran

10.22034/road.2022.346641.2054

Abstract

Concrete pavement of roads is always considered due to the increasing development of the transportation industry, on the other hand, the use of geopolymeric materials in concrete due to reduced production of toxic carbon dioxide (CO2) in the atmosphere and high mechanical properties and durability of concrete The result has been the focus of researchers. In the process of producing geopolymer concrete, aluminosilicate materials (obtained from processing mineral materials) and alkaline solution are replaced by cement. The final product of this chemical compound is the production of large volumes of hydrated gels with high adhesion and filling properties in the geopolymer cement matrix. In this laboratory research, a mixing design was made of control concrete containing Portland cement. Then, slag geopolymer concrete was made in three mixing designs containing 0, 4 and 8% nanosilica. Following XRF and tensile strength tests at 7 days processing time at room temperature (20 to 25 °C) on the sample. Concrete was done. The results showed that in the spectra of XRF test, the presence of silica particles in the composition of geopolymer concrete in Scheme 4 (containing 8% nanosilica) reached the highest level of 36.33%, which improved 16.36%. Percentage in the results of tensile strength test of concrete. On the other hand, the production of aluminum oxide and calcium oxide in geopolymer concrete (design without nanosilica) reached its highest levels of 8.07 and 37.17%, respectively. At the end of the studies in this study, the results of the tests overlapped.

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