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Title: Ternary Cement Mixtures and Marble and Granite Waste in Self-Compacting Concrete: an Evaluation of Fresh and Carbonation Properties

Author(s): Mara M. L. Pereira, Arthur A. Palma e Silva, and Valdirene M. S. Capuzzo

Publication: Symposium Paper

Volume: 362


Appears on pages(s): 461-473

Keywords: ornamental stones, self-compacting concrete, supplementary cementitious materials, sustainable concrete, waste

DOI: 10.14359/51741003

Date: 6/14/2024

The significant amount of waste generated in the processing of ornamental stones is a major problem related to civil construction. In this way, numerous international organizations and countries have performed studies on waste recycling in order to reduce its negative effects. Besides, the use of supplementary cementitious materials (SCMs) in cementitious formulations has also gained prominence in several studies aimed at improving these materials in terms of performance, sustainability, and cost. Therefore, this study examined the fresh and carbonation analysis of self-compacting concrete (SCC) made with marble and granite waste as part of ternary cement mixtures. To achieve this objective, an experimental program was developed with four mixtures of SCC. Slump flow test, T500 test, V-funnel test, L-box test, and density were conducted on the fresh concrete. The carbonation properties of the hardened concrete were also determined. The incorporation of marble and granite waste in the mixtures had no influence on the density of the self-compacting concrete and also contributed to the stabilization of the fresh-state properties. It can be inferred from the carbonate analysis that the utilization of marble and granite waste acted as fillers, contributing to the dysconnectivity of the concrete pores and improving the interaction between the concrete constituents. Thus, the results indicated that the use of marble and granite waste in the composition of ternary cement mixtures provides alternative sustainability although it is necessary to pay attention to the amount of cement replacement to avoid a reduction in resistance to carbonation.