Mechanical and Hydraulic Behaviors of Eco-Friendly Pervious Concrete Incorporating Fly Ash and Blast Furnace Slag
Source abstract
Abstract
Eco-friendly pervious concretes containing fly ash (FA) and blast furnace slag (BFS) were prepared in this study. The compressive strength and hydraulic behaviors were investigated to explore the effect of replacement content of FA and BFS. Rheological tests of cementitious pastes were first conducted and the results showed that FA could increase the apparent viscosity and BFS did not change the rheology performance. Compared to traditional concretes, FA and BFS both decreased the compressive strength of pervious concrete at 28 d, while pervious concrete incorporated with FA and/or BFS presented comparable strength at 60 d. Compared to the control concrete mix, at the same replacement rate, FA changed the compressive strength more obviously than BFS. FA and BFS both decreased the effective porosity and permeability coefficient of pervious concrete. However, when the replacement rate (30%) was the same, concretes with ternary blends presented obviously larger porosity than binary blends. The relationships between porosity and permeability, and strength were also established.
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Research context
OpenAlex topics: Urban Stormwater Management Solutions · Infrastructure Maintenance and Monitoring · Diabetic Foot Ulcer Assessment and Management
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Affiliations
Zhejiang Xinjie Construction Co., Ltd., Ningbo 315000, China
School of Civil and Mechanics Engineering, Central South University of Forestry and Technology, Changsha 410004, China
Department of Civil and Environmental Engineering, The University of Tennessee, Knoxville, TN 37996, USA
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