The research paper presents a modified mix design to develop cellular foamed concrete (CFC) using hazardous micro fine in-situ stone sludge waste in the form of marble slurry (MS), as a replacement of fine river sand (FRS) and tap water. To utilize maximum amount of MS, optimization was done through the Box-Behnken design (BBD) of response surface methodology (RSM). The effects of three effective variable parameters i.e. temperature of water to be added into foaming agent solution (T_w), flow value (FV) and percentage replacement level of MS (%R_ms) on the four responses i.e. oven dry density (ρ_OD), compressive strength at 28 days (f_c.28d), strength performance factor at 28 days (PF_c.28d) and thermal conductivity (λ-value) were stastically analyzed.

ANOVA and multi-objective optimization was performed to finalize the mix having desirable hardened and functional properties. ρOD, fc.28d and λ-value of the CFC was varied in the range from 985 kg/m3 to 1268 kg/m3, from 3.89 MPa to 4.94 MPa and from 0.340 to 0.441 W/m.K, respectively. Advanced characterization techniques i.e. field emission scanning electron microscopy (FE-SEM) and 3D morphological analysis were also performed to investigate the interaction of MS with CFC microstructure and cement paste matrix. The ρOD, compressive strength (CS), and λ-value of the CFC sample, mixed with 60.0 wt% MS; were 1046 kg/m3, 4.19 MPa, and 0.372 W/(m⋅K), respectively.

该研究论文提出了一种改良的混合料设计，以使用大理石浆（MS）形式的危险的微细原位石渣污泥替代细河砂（FRS）和自来水来开发泡沫混凝土（CFC）。为了利用最大量的MS，通过响应面方法（RSM）的Box-Behnken设计（BBD）进行了优化。三个有效变量参数，即要添加到发泡剂溶液中的水的温度（T _w），流量值（FV）和MS的百分比替代水平（％R _ms）对四个响应即烤箱干燥密度（_{ρOD）的影响}），28天时的抗压强度（f _c.28d），28天时的强度性能因子（PF _c.28d））和热导率（λ值）进行了统计分析。

进行方差分析和多目标优化以最终确定具有所需硬化和功能特性的混合物。CFC的ρOD，fc.28d和λ值分别在985 kg / m3至1268 kg / m3、3.89 MPa至4.94 MPa和0.340至0.441 W / mK的范围内变化。还进行了先进的表征技术，即场发射扫描电子显微镜（FE-SEM）和3D形态分析，以研究MS与CFC微结构和水泥浆基质的相互作用。CFC样品的ρOD，抗压强度（CS）和λ值与60.0 wt％MS混合；分别为1046 kg / m3、4.19 MPa和0.372 W /（m·K）。