## 1 Introduction  
As overall consideration for the environment gains traction in Kuwait, attention is being turned to some local factories that generate large amounts of waste. Some of Kuwait's significant industries include structural steel production plants as well as the ceramics production industry. Stringent quality control standards during the manufacturing process and the brittle nature of final ceramic products mean that the ceramics industry generates lots of waste [1,2]. While rejected 'green ceramics' can be pulverized and reintroduced into the production cycle, rejected glazed ceramics cannot be easily recycled and are therefore discarded in landfills across the country. The structural steel plants in Kuwait produce electric-arc furnace slag (EAFS) as opposed to blast furnace slag (BFS); this by-product is made by reducing iron ore and recycling waste steel in electric-arc furnaces, which are the standard across the country. The generated EAFS is discarded as it has no use in Kuwait, but it is known to be durable in its use as an aggregate in the production of pavements [3], which is due to the fact that it is harder and approximately 20% to 25% denser than BFS [4]. Standard performance concrete containing crushed ceramic products to partially replace aggregates show similar rheological properties when compared to a typical concrete mix [5, 6, 7]. The introduction of ceramic waste products to replace coarse and fine aggregates has been shown to improve the rheological and hardened properties of a standard performance concrete [8; 9]. Meanwhile, studies have shown that it is possible to use EAFS to partially replace aggregates in a self-consolidating, high-performance concrete mix, but also noted that its use would result in a reduction of slump and an increase in the viscosity of the SCC mix [10]. However, the use of EAFS has shown to increase the compressive strength, elastic modulus, and also improves the durability of a standard concrete mix made with conventional rounded aggregates [11]. This could be explained by the porosity and roughness of the surface of the EAFS aggregates compared to regular aggregates, which allows for better interaction between the cement paste and the aggregates [11; 12]. Self-consolidating concrete (SCC) is a subset of high-performance concrete (HPC) that has a very high workability which allows it to flow considerably easier than standard performance concrete [13]. This makes SCC less susceptible to segregation and can be poured on site easier than standard performance concrete using less labor [14]. Seeing as the effects of introducing each of the additives to either conventional or high-performance concrete mix has already been documented, the aim of this study is to examine the viability of partially replacing conventional concrete materials with locally-sourced EAFS and repurposed ceramic products in a self-consolidating, high-performance concrete mix, and how it would affect its properties. The results of this would, in turn, be used to find a suitable hybrid mix containing an optimal amount of each of the replacement materials. Introducing these local waste materials into a self-consolidating, high-performance concrete will help minimize the amount of waste that goes to landfill in the State of Kuwait and can bring down the cost of construction. Repurposing wastes generated from local industries to serve as construction materials is one of the ways to make the construction process 'greener' and will aid the country in finding a way forward to becoming a more sustainable community, which is in line with its desire to meet the United Nations Sustainable Development Goals (UN SDGs) by the year 2035, particularly SDG 11: Sustainable Cities and Communities, which is to \"make cities and human settlements inclusive, safe, resilient and sustainable\" [15].