h i g h l i g h t sStudy of mortars with iron ore tailings (IOT): physical-mechanical properties. IOT present higher density than natural aggregates due to the iron concentration. Mortars with IOT showed mechanical properties fitter to brick laying than regular ones. Replacement up to 20% of lime by IOT granted satisfactory properties for coating. IOT morphology and voids required more mixing water to obtain plasticity in mortars.

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