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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The present work discloses the development of a sustainable cement tile (SCT) produced with Iron Ore Tailings from tailings dams (IOT). Initially, technical evaluation and environmental analysis of IOT were performed through physical, chemical and morphological characterisation, leaching and dissolution tests. Its feasibility as a pigment was also investigated. Subsequently, the value analysis was performed, starting from an empathy map to a study on environmental, social and emotional values in the relationship between people and product. As result, the IOT presented fine, crystalline particles, no toxicity, and is technically feasible to be employed as filler, aggregate and pigment in the production of SCT. The colour layer of the SCT presented more homogeneous colour and less pores than conventional ones. Therefore, the design of the SCT was developed, incorporating intangible values such as: environmental ideology, local identity and social expression. In this sense, the present work seeks to assist in the decision-making process involving IOT as construction material.