Characteristics of GGBFS-Based Pervious Concrete Considering Rheological Properties of the Binder

Abstract To mitigate environmental challenges, such as urban flooding, noise pollution, and the heat island effect, pervious concrete has been developed. This research was intended to develop made from ground granulated blast furnace slag (GGBFS) further decrease impact of construction sector by reducing content ordinary Portland cement (OPC). The primary objective mix proportion maximize water permeability while meeting required compressive strength. Two levels (60 100%) OPC replacement GGBFS were evaluated compared OPC-only concrete, two target porosities (10 15%) achieved modifying binder-to-aggregate ratio. CaO CaCl 2 utilized an activator accelerator, respectively, for only binder. Characteristics determined with strength, porosity test. Meanwhile, effects rheological properties binders on strength concretes evaluated. According results, always exhibited a positive correlation porosity, regardless binder type. Although, CaO-activated lower than other cases (60% OPC), it still meets minimum requirement. Based rheology studies binder, found that, adhesion force decreases, binders. CT scan revealed that when adhesive weaker, local higher (i.e., pore volume larger) at bottom specimen, which might be due limited consolidation compaction between aggregate particles its plastic viscosity.