BOTTOM ASH FLY-ASH 3 REPLACEMENT 2 ATTACK 1 Box-Behnken design 1 Cement replacement 1 Chloride penetration 1 Coal bottom ash 1 DEGRADATION 1 DURABILITY 1 Drying shrinkage 1 ELEMENTS 1 ENRICHMENT 1 EXTRACTION 1 POLLUTION 1 POLYCYCLIC AROMATIC-HYDROCARBONS 1 RESISTANCE 1 SAND 1 SEDIMENT 1 Sulphate-chloride attack 1 WATER SAMPLES 1 coal ash 1 coal bottom ash 1 compressive strength 1 ecological risk assessment 1 ecological risk indicators 1 heavy metals 1 particle fineness 1 power plant 1 tensile strength 1