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Materials, Vol. 11, Pages 900: Waste-Based Pervious Concrete for Climate-Resilient Pavements

Materials, Vol. 11, Pages 900: Waste-Based Pervious Concrete for Climate-Resilient Pavements

Materials doi: 10.3390/ma11060900

Authors: Hsin-Lung Ho Ran Huang Lih-Chuan Hwang Wei-Ting Lin Hui-Mi Hsu

For the sake of environmental protection and circular economy, cement reduction and cement substitutes have become popular research topics, and the application of green materials has become an important issue in the development of building materials. This study developed green pervious concrete using water-quenched blast-furnace slag (BFS) and co-fired fly ash (CFFA) to replace cement. The objectives of this study were to gauge the feasibility of using a non-cement binder in pervious concrete and identify the optimal binder mix design in terms of compressive strength, permeability, and durability. For filled percentage of voids by cement paste (FPVs) of 70%, 80%, and 90%, which mixed with CFFA and BFS as the binder (40 + 60%, 50 + 50%, and 60 + 40%) to create pervious concrete with no cement. The results indicate that the complete (100%) replacement of cement with CFFA and BFS with no alkaline activator could induce hydration, setting, and hardening. After a curing period of 28 days, the compressive strength with different FPVs could reach approximately 90% that of the control cement specimens. The cementless pervious concrete specimens with BFS:CFFA = 7:3 and FPV = 90% presented better engineering properties and permeability.

Authors:   Ho, Hsin-Lung ; Huang, Ran ; Hwang, Lih-Chuan ; Lin, Wei-Ting ; Hsu, Hui-Mi
Journal:   Materials
Volume:   11
edition:   6
Year:   2018
Pages:   900
DOI:   10.3390/ma11060900
Publication date:   27-May-2018
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