Mechanical, environmental and economic performance of structural concrete containing silica fume and marble industry waste powder

It was found that the mechanical properties of concrete containing MWP tend to decline for replacement ratios over 10% but satisfactory results were obtained below that level. Regarding the use of SF, it was observed that it improves the mechanical performance of concrete with MWP by offsetting the decline of its properties relative to conventional concrete. The comparison of the concrete mixes in terms of different approaches has shown that the optimized mix occurs when MWP and SF are used simultaneously. The proper use of MWP as a replacement for cement would have environmental benefits and boost the viability of the marble stone industry.