Permeability reduction in pervious concretes due to clogging: Experiments and modeling

Omkar Deo, Milani Sumanasooriya, Narayanan Neithalath

Research output: Contribution to journalArticle

78 Citations (Scopus)

Abstract

The ability of in-place pervious concretes to effectively drain storm water runoff gradually reduces as it becomes clogged due to the ingress of fine particles into its pore structure. This study systematically investigates several pervious concrete mixtures proportioned using different size aggregates and their blends on their propensity to clogging so as to bring out the influence of pore structure features on particle retention and the consequent permeability reduction. A finer and a coarser sand are used as clogging materials and the experimental study on permeability reduction (as a result of particle retention) is carried out using a falling head permeability cell. Significant permeability reductions are observed when finer sand is used as the clogging material. A certain effective pore size to clogging particle size ratio is found in this study, that is most conducive to particle retention. Thus pervious concrete specimens of similar porosity, having very large (∼5-6 mm) or very small (∼1-2 mm) pore sizes are found to be less susceptible to clogging under the conditions of this study. An idealized three-dimensional geometry obtained from two-dimensional planar images of pervious concrete sections is used, along with a probablistic particle capture model to predict particle retention associated with clogging material addition and simulated runoff. The trends in the predicted particle retention and the experimentally determined permeability reduction agree well. A "clogging potential" is defined in this paper, either as a ratio of the porosity reduction because of clogging to the initial porosity, or as a ratio of the permeability reduction to the permability in the unclogged state.

Original languageEnglish (US)
Article number003007QMT
Pages (from-to)741-751
Number of pages11
JournalJournal of Materials in Civil Engineering
Volume22
Issue number7
DOIs
StatePublished - Jul 2010
Externally publishedYes

Fingerprint

Concretes
Porosity
Experiments
Pore structure
Runoff
Pore size
Sand
Concrete mixtures
Particle size
Geometry
Water

Keywords

  • Clogging
  • Clogging potential
  • Particle capture model
  • Permeability
  • Pervious concrete
  • Pore structure
  • Porosity

ASJC Scopus subject areas

  • Building and Construction
  • Civil and Structural Engineering
  • Materials Science(all)
  • Mechanics of Materials

Cite this

Permeability reduction in pervious concretes due to clogging : Experiments and modeling. / Deo, Omkar; Sumanasooriya, Milani; Neithalath, Narayanan.

In: Journal of Materials in Civil Engineering, Vol. 22, No. 7, 003007QMT, 07.2010, p. 741-751.

Research output: Contribution to journalArticle

@article{e3431ce174784987b73b3fc2a2e267ca,
title = "Permeability reduction in pervious concretes due to clogging: Experiments and modeling",
abstract = "The ability of in-place pervious concretes to effectively drain storm water runoff gradually reduces as it becomes clogged due to the ingress of fine particles into its pore structure. This study systematically investigates several pervious concrete mixtures proportioned using different size aggregates and their blends on their propensity to clogging so as to bring out the influence of pore structure features on particle retention and the consequent permeability reduction. A finer and a coarser sand are used as clogging materials and the experimental study on permeability reduction (as a result of particle retention) is carried out using a falling head permeability cell. Significant permeability reductions are observed when finer sand is used as the clogging material. A certain effective pore size to clogging particle size ratio is found in this study, that is most conducive to particle retention. Thus pervious concrete specimens of similar porosity, having very large (∼5-6 mm) or very small (∼1-2 mm) pore sizes are found to be less susceptible to clogging under the conditions of this study. An idealized three-dimensional geometry obtained from two-dimensional planar images of pervious concrete sections is used, along with a probablistic particle capture model to predict particle retention associated with clogging material addition and simulated runoff. The trends in the predicted particle retention and the experimentally determined permeability reduction agree well. A {"}clogging potential{"} is defined in this paper, either as a ratio of the porosity reduction because of clogging to the initial porosity, or as a ratio of the permeability reduction to the permability in the unclogged state.",
keywords = "Clogging, Clogging potential, Particle capture model, Permeability, Pervious concrete, Pore structure, Porosity",
author = "Omkar Deo and Milani Sumanasooriya and Narayanan Neithalath",
year = "2010",
month = "7",
doi = "10.1061/(ASCE)MT.1943-5533.0000079",
language = "English (US)",
volume = "22",
pages = "741--751",
journal = "Journal of Materials in Civil Engineering",
issn = "0899-1561",
publisher = "American Society of Civil Engineers (ASCE)",
number = "7",

}

TY - JOUR

T1 - Permeability reduction in pervious concretes due to clogging

T2 - Experiments and modeling

AU - Deo, Omkar

AU - Sumanasooriya, Milani

AU - Neithalath, Narayanan

PY - 2010/7

Y1 - 2010/7

N2 - The ability of in-place pervious concretes to effectively drain storm water runoff gradually reduces as it becomes clogged due to the ingress of fine particles into its pore structure. This study systematically investigates several pervious concrete mixtures proportioned using different size aggregates and their blends on their propensity to clogging so as to bring out the influence of pore structure features on particle retention and the consequent permeability reduction. A finer and a coarser sand are used as clogging materials and the experimental study on permeability reduction (as a result of particle retention) is carried out using a falling head permeability cell. Significant permeability reductions are observed when finer sand is used as the clogging material. A certain effective pore size to clogging particle size ratio is found in this study, that is most conducive to particle retention. Thus pervious concrete specimens of similar porosity, having very large (∼5-6 mm) or very small (∼1-2 mm) pore sizes are found to be less susceptible to clogging under the conditions of this study. An idealized three-dimensional geometry obtained from two-dimensional planar images of pervious concrete sections is used, along with a probablistic particle capture model to predict particle retention associated with clogging material addition and simulated runoff. The trends in the predicted particle retention and the experimentally determined permeability reduction agree well. A "clogging potential" is defined in this paper, either as a ratio of the porosity reduction because of clogging to the initial porosity, or as a ratio of the permeability reduction to the permability in the unclogged state.

AB - The ability of in-place pervious concretes to effectively drain storm water runoff gradually reduces as it becomes clogged due to the ingress of fine particles into its pore structure. This study systematically investigates several pervious concrete mixtures proportioned using different size aggregates and their blends on their propensity to clogging so as to bring out the influence of pore structure features on particle retention and the consequent permeability reduction. A finer and a coarser sand are used as clogging materials and the experimental study on permeability reduction (as a result of particle retention) is carried out using a falling head permeability cell. Significant permeability reductions are observed when finer sand is used as the clogging material. A certain effective pore size to clogging particle size ratio is found in this study, that is most conducive to particle retention. Thus pervious concrete specimens of similar porosity, having very large (∼5-6 mm) or very small (∼1-2 mm) pore sizes are found to be less susceptible to clogging under the conditions of this study. An idealized three-dimensional geometry obtained from two-dimensional planar images of pervious concrete sections is used, along with a probablistic particle capture model to predict particle retention associated with clogging material addition and simulated runoff. The trends in the predicted particle retention and the experimentally determined permeability reduction agree well. A "clogging potential" is defined in this paper, either as a ratio of the porosity reduction because of clogging to the initial porosity, or as a ratio of the permeability reduction to the permability in the unclogged state.

KW - Clogging

KW - Clogging potential

KW - Particle capture model

KW - Permeability

KW - Pervious concrete

KW - Pore structure

KW - Porosity

UR - http://www.scopus.com/inward/record.url?scp=77955642873&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77955642873&partnerID=8YFLogxK

U2 - 10.1061/(ASCE)MT.1943-5533.0000079

DO - 10.1061/(ASCE)MT.1943-5533.0000079

M3 - Article

AN - SCOPUS:77955642873

VL - 22

SP - 741

EP - 751

JO - Journal of Materials in Civil Engineering

JF - Journal of Materials in Civil Engineering

SN - 0899-1561

IS - 7

M1 - 003007QMT

ER -