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The Investigation of Combined Effect of GBFS and Slaked Lime on Cement Paste and Mortar Properties
(Gazi Univ, 2023) Aruntas, Huseyin Yilmaz; Sahinoz, Melih; Dayi, Mustafa
In this experimental study, some physical and mechanical properties of the specimens produced by using a high ratio of slaked lime (SL) and ground blast-furnace slag (GBFS) in cement-based paste and mortar mixtures were investigated. Mixtures of pastes and mortars were prepared by replacing SK and GBFS with Portland cement at 10% SL+10% GBFS, 20% SL+20% GBFS, and 30% SL+30% GBFS ratios by weight. The workability of the produced mortar mixtures was kept fixed. The physical and mechanical experimental results obtained from the produced mortar mixtures were compared among themselves and with the control specimens. Consistency water, setting times, and volume expansion experiments were performed on paste specimens, and unit volume weight, compressive strength, and flexural strength experiments were performed on mortar specimens. Obtained experiment results showed that substituting SL and GBFS together with cement increased the amount of paste consistency water, decreased initial setting times, but increased final setting times, and decreased the unit volume weight and volume expansion. In addition, up to 30% replacement of SL and GBFS together reduced the 7, 28, and 90 days flexural and compressive strengths of the specimens.