On the strategies to improve the eco-efficiency of self-compacting concrete using industrial waste: An analytical review

Self-compacting microconcretes containing ornamental stone waste and expanded polystyrene residue: influence of the ratios filler/cement and lightweight /conventional aggregates

“…Response surfaces were drawn for compressive strength, tensile strength, void ratio, density, ultrasonic pulse velocity, water volume, and binder intensity to optimize the experimental design. A regression equation was found for each test performed that estimates the expected values for different proportions of f/c and V LWA / V CA based on the results obtained from the tests (Equation 4) [19]. The coefficients of determination (R 2 ) were found to verify the fit of the regression equations obtained for a significance p-value lower than 0.05.…”

“…The modified Andreassen curve adjustment data established a proportion of sands of 1:3 (R-Sand/M-Sand) and a powder-to-total solid volume ratio (Vp/Vt) of 35%. Once the reference dosage was established by the compressible packing method and the limits of the experimental method, the statistical factorial model methodology was used to define the volume ratios filler/cement (f/c) and lightweight/conventional aggregates (VLWA/VCA) in order to reduce the number of samples to be tested and to obtain results adjusted by statistical equations [19].…”

“…However, the low density of LWA leads to a reduction in the mechanical strength of LWASCC, making a large volume of cement necessary to ensure structural strength, which implies low environmental efficiency due to the high energy-demanding cement production, which accounts for around 7% of the global emissions of carbon dioxide (CO 2 ) [12]- [19].…”

Effect of Mineral Admixtures and Curing Regimes on Properties of Self-Compacting Concrete

“…Self-compacting concrete (SCC) represents a significant advancement in concrete technology that has revolutionized the construction industry over the past two decades. SCC is characterized by its ability to flow and compact under its weight without requiring external vibration, even in densely reinforced structural elements [1,2]. Compared to conventional vibrated concrete, SCC offers several benefits, such as faster construction, reduced noise and labor, excellent surface finishes, and improved durability [3].…”

Effect of By-Pass Filter Dust on Durability of Self-Compacting Concrete

“…Traditionally, and in order to achieve the above-mentioned desired properties, SCC contains higher amount of cement, chemical admixtures and fine aggregates compared to vibrated concrete mixtures, leading to a higher carbon footprint and lower sustainability. On the other hand, appropriate modifications to SCCs' mix designs by adding industrial waste materials, reducing cement content and minimizing the chemical admixture consumption, could greatly improve the eco-efficiency of the concrete [6]. Nevertheless, incorporating raw industrial by-products without subjected them to additional processing, as they may contain dangerous impurities in conjunction with low cement content, could lead to the creation of SCC of dubious quality and performance.…”