Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Articles Article Faculty Publications -Articles Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Strength Development of Geopolymer Composites Made from Red Mud-Fly Ash as a Subgrade Material in Road Construction Subject The topic of the resource Fly ash; Geopolymer; Leaching; Red mud; Subgrade material; Waste management Description An account of the resource The application of industrial waste in construction reduces the dependency on natural resources. The materials, including red mud (RM) and fly ash (FA), proved to be favorable materials. However, the materials potential together as a geopolymer composite for road applications has rarely been explored. This study will examine the possibility of the replacement of natural materials in subgrade applications. To achieve this, the geopolymer compositions will be prepared by replacing RM with FA at replacement rates of 10%, 20%, and 30% by dry weight basis. The alkaline activator solution of 8 M will be prepared using sodium hydroxide (NaOH) and sodium silicate to develop geopolymer composites. The strength properties will be studied using the California Bearing Ratio (CBR) and unconfined compression strength (UCS) and validated with microstructural analysis using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR). The results reveal that geopolymer composites could achieve a maximum CBR value of 12% and UCS of 2,700 kPa. The microstructural analysis revealed that the formation of dense calcium aluminate hydrate (C-A-H) and calcium silicate hydrate (C-S-H) are the reason for strength improvement. The leaching studies show that the toxic elements were within the permissible limits. Overall, the test results confirmed that the geopolymer composites meet the required strength and could be used as a subgrade material in road construction. 2020 American Society of Civil Engineers. Creator An entity primarily responsible for making the resource Chandra K.S.; Krishnaiah S.; Reddy N.G.; Hossiney N.; Peng L. Source A related resource from which the described resource is derived Journal of Hazardous, Toxic, and Radioactive Waste, Vol-25, No. 1 Publisher An entity responsible for making the resource available American Society of Civil Engineers (ASCE) Date A point or period of time associated with an event in the lifecycle of the resource 2021-01-01 Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1061/(ASCE)HZ.2153-5515.0000575" target="_blank" rel="noreferrer noopener">https://doi.org/10.1061/(ASCE)HZ.2153-5515.0000575</a> <br /><br /><a href="https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096037715&amp;doi=10.1061%2F%28ASCE%29HZ.2153-5515.0000575&amp;partnerID=40&amp;md5=033edd49f7a01f092a735e8ce0ad2e20" target="_blank" rel="noreferrer noopener">https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096037715&amp;doi=10.1061%2f%28ASCE%29HZ.2153-5515.0000575&amp;partnerID=40&amp;md5=033edd49f7a01f092a735e8ce0ad2e20</a> Rights Information about rights held in and over the resource Restricted Access Relation A related resource ISSN: 21535493 Format The file format, physical medium, or dimensions of the resource Online Language A language of the resource English Type The nature or genre of the resource Article Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Chandra K.S., Dept. of Civil Engineering, JNTU Anantapuram, Anantapuram, Andhra Pradesh, 515002, India, Dept. of Civil Engineering, School of Engineering and Technology, Christ Univ., Bangalore, Karnataka, 560074, India; Krishnaiah S., Dept. of Civil Engineering, JNTU Anantapuram, Anantapuram, Andhra Pradesh, 515002, India; Reddy N.G., Dept. of Civil and Environmental Engineering, Shantou Univ., Shantou, Guangdong, 515063, China, Dept. of Civil Engineering, Kakatiya Institute of Technology and Science (KITS), Warangal, Telangana, 506015, India; Hossiney N., Dept. of Civil Engineering, School of Engineering and Technology, Christ Univ., Bangalore, Karnataka, 560074, India; Peng L., Dept. of Civil and Environmental Engineering, Shantou Univ., Shantou, Guangdong, 515063, China