Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 78, Issue -, Pages 69-76Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2014.12.073
Keywords
Pervious concrete; Porosity; Compressive strength; Flexural strength; Dynamic modulus of elasticity; X-ray microtomography; SEM analysis
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This study investigates the influence of aggregate type and size on the properties of pervious concrete. Five different concrete mixtures were prepared, including a standard dense concrete mixture and four pervious concrete mixtures with varied aggregate types (dolomite or steel slag) and differing proportions of 4-8 mm to 8-16 mm aggregate fractions (30:60 or 60:30). The results suggest that a higher amount of small aggregate fractions (4-8 mm) yielded higher density concrete mixtures and greater flexural strength. However, connected porosity as a main parameter for estimating pervious concrete efficiency was surprisingly influenced more by the aggregate type than the size. (C) 2015 Elsevier Ltd. All rights reserved.
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