The Effect of Incorporating Silica Stone Waste on the Mechanical Properties of Sustainable Concretes

Saeid Abbasi; Mohammad Hemen Jannaty; Rabar H Faraj; Shahriar Shahbazpanahi; Amir Mosavi

doi:10.3390/ma13173832

The Effect of Incorporating Silica Stone Waste on the Mechanical Properties of Sustainable Concretes

Materials (Basel). 2020 Aug 30;13(17):3832. doi: 10.3390/ma13173832.

Authors

Saeid Abbasi¹, Mohammad Hemen Jannaty¹, Rabar H Faraj², Shahriar Shahbazpanahi¹, Amir Mosavi^{3

4

5}

Affiliations

¹ Department of Civil Engineering, Sanandaj Branch, Islamic Azad University, Kurdistan 66169, Iran.
² Civil Engineering Department, University of Halabja, Halabja 46006, Kurdistan Region, Iraq.
³ Faculty of Civil Engineering, Technische Universität Dresden, 01069 Dresden, Germany.
⁴ Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam.
⁵ Thuringian Institute of Sustainability and Climate Protection, 07743 Jena, Germany.

Abstract

Incorporating various industrial waste materials into concrete has recently gained attention for sustainable construction. This paper, for the first time, studies the effects of silica stone waste (SSW) powder on concrete. The cement of concrete was replaced with 5, 10, 15, and 20% of the SSW powder. The mechanical properties of concrete, such as compressive and tensile strength, were studied. Furthermore, the microstructure of concrete was studied by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy analysis (EDX), Fourier transformed infrared spectroscopy (FTIR), and X-Ray diffraction (XRD) tests. Compressive and tensile strength of samples with 5% SSW powder was improved up to 18.8% and 10.46%, respectively. As can be observed in the SEM images, a reduced number of pores and higher density in the matrix can explain the better compressive strength of samples with 5% SSW powder.

Keywords: building materials; circular economy; compressive strength; eco-friendly; green buildings; life-cycle assessment (LCA); materials cycle; microstructure; recycled materials; silica stone; sustainable concrete; sustainable construction; sustainable development; sustainable development goals (SDGs); sustainable materials; waste management.