Measurement of Surface Damage through Boundary Detection: An Approach to Assess Durability of Cementitious Composites under Tannery Wastewater

Table 4

Different types of tannery wastewater used in the study.

Notation	Wastewater type	Constituents
T1	Tannery wastewater with all primary constituents	NaCl, Na3PO4/Na2HPO4⋅2H2O, NaNO3, Na2CO3, NaHCO3, Na2S⋅5H2O, NH4NO3, Na2SO4
T2	Tannery wastewater without chloride	Na3PO4/Na2HPO4⋅2H2O, NaNO3, Na2CO3, NaHCO3, Na2S⋅5H2O, NH4NO3, Na2SO4
T3	Tannery wastewater without sulfate	NaCl, Na3PO4/Na2HPO4⋅2H2O, NaNO3, Na2CO3, NaHCO3, NH4NO3
T4	Tannery wastewater without ammonium	NaCl, Na3PO4/Na2HPO4⋅2H2O, NaNO3, Na2CO3, NaHCO3, Na2S⋅5H2O, Na2SO4