Performance assessment and life cycle analysis of concrete containing ferrochrome slag and fly ash as replacement materials – A circular approach

Concrete incorporating supplementary cementitious materials: Temporal evolution of compressive strength and environmental life cycle assessment

“…Previous research that has explored the use of fly ash as a substitute for cement in concrete has utilized percentages ranging from 0 % to 40 %, calculating their carbon footprint. In a study conducted by Das et al [ 100 ], significant reductions in the carbon footprint were observed, reaching up to 77 % when substituting 40 % of the cement with fly ash. Similarly, a 20 % substitution resulted in a 37 % reduction in the carbon footprint.…”

“…These formulae enable the prediction of the uniaxial compressive strength of concrete as a function of the composition of the material and maturity, characterized by the effective water-to-cement ratio, the aggregate-to-cement ratio, and the degree of hydration. To achieve this, the degrees of hydration of normal cement against various ages, considering a w/c ratio of 0.54, were taken from Cook et al [ 100 ], as shown in Table A . In addition, the set of formulae mentioned above included the water absorption capacity of aggregates set at 0.0099 and the void-filling extent of water at 0.603, extracted from the research by Irfan ul Hassan et al [ 104 ].…”

Shear strength and microstructural investigation on high-volume fly ash self-compacting concrete containing recycled concrete aggregates and coal bottom ash

“…Eventually, the proposed aim further follows the approach for the maximum utilization of industrial waste products in manufacturing sustainable forms of HVFYA-SCC. Since the said approach conserves vital natural resources, it substantially reduces the number of abovementioned wastes in preceding paragraphs that are generally being impelled towards landfills for their idle disposal (33)(34)(35)(36)(37)(38)(39). Therefore, the outcomes of this study will indicate valuable information on the performance and potential benefits of using HVFYA-SCC in advanced structural designs and construction.…”

Impact of Superplasticizers on the Performance of Low-Grade Limestone-Based Cement Mixes

“…The fly ash content is limited to 30% in most concrete mixes. The problem behind the use of high-volume fly ash in concrete mixes is the delay in setting and the slower rate of strength gain at the beginning of age [ 5 ]. Slag can be substituted for up to 70% clinker; however, its availability is inadequate [ 6 ].…”