Several kinds of waste CC0651 also reused in combination with cement for producing concrete products, including waste marble (Gencel et al., 2012), ferrochromium slag (Gencel et al., 2013) and CRT funnel glass (Ling and Poon, 2014). Recently, reutilization of sewage sludge ash (SSA) was reported to manufacture blocks with best performance by replacing 10% sand with SSA (Francisco et al., 2014). Even another study assessed the potential feasibility of reusing lime-dried sludge as a replacement of limestone material for clinker production (Xu et al., 2015). Rala et al. (2015) have explored the feasibility of reuse the marble slurry to partially replace cement for concrete production. They found that 10% of cement replaced by marble slurry was the optimum content to produce concrete with the requisite strength and enhanced durability.
Few studies gave a valid explanation for the adverse effects of textile effluent sludge on properties of cement-sludge mixtures. It was speculated that the presence of chloride and sulfates in sludge resulted in decline in strength (Raghunathan et al., 2010); Pandey et al. (2011) inferred that Zn and Pb salts in the sludge caused precipitation of protective coatings around cement grains during cement hydration, leading to a decrease in compressive strength.