Influence of Rock Dust Additives as Fine Aggregate Replacement on Properties of Cement Composites—A Review

Abstract

Concrete production consumes enormous amounts of fossil fuels, raw materials, and is energy intensive. Therefore, scientific research is being conducted worldwide regarding the possibility of using by-products in the production of concrete. The objective is not only to identify substitutes for cement clinker, but also to identify materials that can be used as aggregate in mortar and concrete productions. Among the potential alternative materials that can be used in cement composite production is rock dust of different geological origin. However, some adversarial effects may be encountered when using rock dust regarding the properties and durability of mortars and concrete. Therefore, comprehensive research is needed to evaluate the adequacy of rock dust use in cementitious composite production. This paper presents a comprehensive review of the scientific findings from past studies concerning the use of various geological origins of rock dust in the production of mortars and concrete. The influence of rock dust as a replacement of fine aggregates on cementitious composites was analyzed and evaluated. In this assessment and review, fresh concrete and mortar properties, i.e., workability, segregation, and bleeding, mechanical properties, and the durability of hardened concrete and mortar were considered.

Enhanced Eco-Friendly Concrete Nano-Change with Eggshell Powder

“…Production and construction have a point of contact in the form of production of building materials, products, and structures. There are several works devoted primarily to solving environmental and economic problems through the disposal of various types of waste by using them in building materials [3,5,[12][13][14][15][16]19,[25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40]. In addition, there are works related to the improvement of the properties of composite building materials, products, structures, and first, concretes due to their nano-modification [41][42][43][44][45][46][47][48][49][50][51][52][53][54][55].…”

Recycling of Basalt and Limestone Cutting Dust in Concrete Mix Design

“…In Jordan, there is a lack of technical studies analyzing the concrete properties of typical rocks found in its geological composition. In Europe, approximately 4 billion metric tons of aggregate are produced and consumed, with nearly 91% of these aggregates sourced from natural resources [13]. Projections indicate that the United States will annually produce 2.5 billion metric tons of construction aggregate by 2020, with an anticipated growth rate of 3 to 5 percent per year [14].…”

Life-Cycle Sustainability Assessment of Using Rock Dust as a Partial Replacement of Fine Aggregate and Cement in Concrete Pavements

“…Rock dust is a byproduct obtained from the production process of crushed stone aggregates. A large amount of waste material is produced in the form of rock dust during the quarrying and aggregate processing [12]. Thus, the use of rock dust as a partial replacement for sand and/or cement in concrete may have promising potential environmental and economic benefits in terms of reducing construction costs, energy consumption, GHG emissions and saving natural resources.…”

“…Rock dust has been found to produce concrete with equivalent or improved mechanical and durability properties when used as fine aggregate and/or cement [11][12][13][14][15]. The effect of rock dust on the mechanical properties of concrete significantly depends on the stone dust specific surface area and the percentage of replacement [13].…”

“…The effect of rock dust on the mechanical properties of concrete significantly depends on the stone dust specific surface area and the percentage of replacement [13]. The use of rock powder as a partial replacement for fine aggregate generally leads to the improvement of mechanical properties and durability of cement composites [12,13]. Due to the fact that rock dust is an inert material, replacing cement with dust usually leads to the deterioration of the properties of cement composites.…”