Characterizing pore volume, sizes, and connectivity in pervious concretes for permeability prediction

Neithalath, Narayanan; Sumanasooriya, Milani S.; Deo, Omkar

doi:10.1016/j.matchar.2010.05.004

Cited by 347 publications

(149 citation statements)

References 14 publications

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“…From these results it can be concluded that pervious concrete samples with higher average porosity also had a higher permeability. Neithalath, et al [1] set up an exponential equation to represent the relationship between porosity and the permeability coefficient. However, permeability of a pervious concrete is also affected by many other factors, such as the pore structure, et al In this study, an exponential equation was generated to present the relationship between the permeability coefficient and effective porosity.…”

Section: Compressive Strengthmentioning

confidence: 99%

“…Pervious concrete is a special type of Portland cement concrete composed of rationally graded coarse aggregate and cementitious materials which provide the mixture with an interconnected macro-pore internal structure [1,2]. Because of the structural characteristics, many benefits can be achieved by using pervious concrete, including quick water drainage, tire-pavement interaction noise abatement and reduction in urban heat island effect [2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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Mechanical and Hydraulic Behaviors of Eco-Friendly Pervious Concrete Incorporating Fly Ash and Blast Furnace Slag

2018

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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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Section: Compressive Strengthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanical and Hydraulic Behaviors of Eco-Friendly Pervious Concrete Incorporating Fly Ash and Blast Furnace Slag

2018

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“…Therefore, the overestimated porosity could have possibly cancelled the gap among the air permeabilities measured under different pressures. The measured total porosity of concrete can be approximately 0.15 or more (Neithalath et al 2010). However, the volume of the active path for air migration can be smaller than the actual total pore volume because pores that are smaller than few nanometers, such as the interlayer space (Prasuhn 1995), have large resistance, and these pores may contribute less to air migration.…”

Section: Air Permeability Coefficient (M/s)mentioning

confidence: 99%

Numerical Study on the Relationship among Air Permeability, Pore Size and Pressure Assuming Molecular and Viscous Flows

Sakai

2017

ACT

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The relationship among air permeability, pressure, and pore size from a viscous-to a molecular-flow region is not well understood. In this work, air permeability in a straight circular pipe was studied considering viscous and molecular flows. I learned that the air-permeability coefficient and intrinsic air-permeability coefficient exhibit contrasting pressure dependence: that of the air-permeability coefficient is larger in a larger pore, whereas that of the intrinsic air-permeability coefficient is larger in a smaller pore. I thus proposed a method to obtain the air-permeability coefficient at atmospheric pressure from that measured under vacuum or pressurised condition. From the Reynolds number study, turbulent flow study is unnecessary in air flow in concrete.

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“…There are several different studies about properties of permeable concrete in the literature [23][24][25][26][27][28][29][30][31]. However, the aim of this study is to prepare the optimum permeable concrete in terms of …”

Section: Introductionmentioning

confidence: 99%

Effect of aggregate grain size distribution on properties of permeable concrete

Yazıcı

Mardani‐Aghabaglou

2017

J. Fundam and Appl Sci.

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Characterizing pore volume, sizes, and connectivity in pervious concretes for permeability prediction

Cited by 347 publications

References 14 publications

Mechanical and Hydraulic Behaviors of Eco-Friendly Pervious Concrete Incorporating Fly Ash and Blast Furnace Slag

Mechanical and Hydraulic Behaviors of Eco-Friendly Pervious Concrete Incorporating Fly Ash and Blast Furnace Slag

Numerical Study on the Relationship among Air Permeability, Pore Size and Pressure Assuming Molecular and Viscous Flows

Effect of aggregate grain size distribution on properties of permeable concrete

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