Effect of stainless steel slag waste as a replacement for cement in mortars. Mechanical and statistical study

- Different treatments of stainless steel slag waste (SW) were performed to improve it.
- Chemical properties of SW showed a positive cementitious capacity.
- SW processed showed an increase in mechanical strength results.
- SW processed through simple treatments can be used as a substitute for cement.

This document studies replacing cement by stainless steel slag waste and improving the mechanical properties of the slag waste by using different types of treatments.The application of stainless steel slag waste reduces the use of raw materials for manufacturing cement and provides a profit from the large amount of waste generated.This study analyses the cementation and pozzolanic reaction characteristics of stainless steel slag waste to evaluate its strength activity index and its environmental impact. The cement was replaced with different substitution percentages of untreated stainless steel slag waste and slag waste that was processed through crushing, burning and both treatment to determine the optimum replacement ratio according to its mechanical properties. A study based on multivariate factor analysis was developed to compare these processed wastes according to their mechanical behaviour. The decision mechanism consists of a feature extraction method to evaluate the wastes used as a cement substitute.

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