Study on the Permeability of Recycled Aggregate Pervious Concrete with Fibers
1
School of Civil Engineering, Henan University of Engineering, Zhengzhou 451191, China
2
School of Water Conservancy Engineering, Zhengzhou University, Zhengzhou 450001, China
3
Patent Examination Cooperation (Henan) Center of the Patent Office, CNIPA, Zhengzhou 450001, China
*
Author to whom correspondence should be addressed.
Materials 2020, 13(2), 321; https://doi.org/10.3390/ma13020321
Received: 2 December 2019
/
Revised: 31 December 2019
/
Accepted: 8 January 2020
/
Published: 10 January 2020
(This article belongs to the Section Construction and Building Materials)
Pervious concrete is considered to be porous concrete because of its pore structure and excellent permeability. In general, larger porosity will increase the permeability coefficient, but will significantly decrease the compressive strength. The effects of water-cement ratio, fiber types, and fiber content on the permeability coefficient, porosity, compressive strength, and flexural strength were investigated. The pore tortuosity of the pervious concrete was determined by volumetric analysis and two-dimensional cross-sectional image analysis. The concept and calculation method of porosity tortuosity were further proposed. Results show that the permeability coefficient of the pervious concrete is the most suitable with a water-cement ratio of 0.30; the water permeability of the pervious concrete is influenced by fiber diameter. The permeability coefficient of pervious concrete with polypropylene thick fiber (PPTF) is greater than that with copper coated steel fiber (CCF) and the polypropylene fiber (PPF). The permeability coefficient is related to tortuosity and porosity, but when porosity is the same, the permeability coefficient may be different. Finally, general relations between the permeability coefficient and porosity tortuosity are constructed.
View Full-Text
Keywords:
recycled aggregate pervious concrete; permeability coefficient; water-cement ratio; flexural strength; porosity tortuosity
▼
Show Figures
Figure 1
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
MDPI and ACS Style
Zhu, H.; Wen, C.; Wang, Z.; Li, L. Study on the Permeability of Recycled Aggregate Pervious Concrete with Fibers. Materials 2020, 13, 321. https://doi.org/10.3390/ma13020321
AMA Style
Zhu H, Wen C, Wang Z, Li L. Study on the Permeability of Recycled Aggregate Pervious Concrete with Fibers. Materials. 2020; 13(2):321. https://doi.org/10.3390/ma13020321
Chicago/Turabian StyleZhu, Haitang, Chengcheng Wen, Zhanqiao Wang, and Lan Li. 2020. "Study on the Permeability of Recycled Aggregate Pervious Concrete with Fibers" Materials 13, no. 2: 321. https://doi.org/10.3390/ma13020321
Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.
