The Investigation of Physical and Mechanical Properties of Geopolymer Mortars with Granulated Blast Furnace Slag Cured at Room Temperature

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In this study, the usage of granulated blast furnace slag (GBFS) as binder and aggregate in themanufacture of geopolymer mortar was investigated. For reduced energy consumption in production and the curing was applied at room temperature instead of oven curing. Liquid/Binder (l/b) ratios were determined in two different ratio as 1 and 0.7. Alkaline activators such asNaOH and SS (2:1, 1:2, 3:0, 0:3)were used in four different rates. Experiments were performed on mortar after 28‐days. Compressive strength, flexural strength, water absorption, apparent porosity, bulk density, XRD, XRF, SEM and EDX analysis and tests were performed on the samples. As a result, it was concluded that it is possible to manufacture geopolymer mortar with GBFS aggregate and grounded GBFS binder with curing at room temperature. According to the finding, the highest flexural strength value (5.1 MPa) was obtained from the mortar samples with 2:1 NaOH and SS content and l/b ratio for 0.7. The highest compressive strength values (29.1 MPa) were obtained from the mortar samples with a 3:0 NaOH content and l/b for 0.7.

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Geopolymer mortar , Granulated blast furnace slag , Room temperature curing

Afyon Kocatepe University Journal Of Science an‎d Engineering

367

Afyon Kocatepe University Journal Of Science an‎d Engineering