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Title:

Optimization of Strength and Hydraulic Conductivity of Pervious Concrete for Stormwater Management in South Central Texas

Accession Number:

01155698

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

A combined experimental and analytical approach is summarized to optimize the strength and hydraulic conductivity of pervious concrete by changing the porosity by incorporating admixtures and a small fraction of fine aggregates. Several mix-designs were prepared by adding an incremental amount of fine aggregates, with the structural, hydraulic, and environmental properties of the resulting pervious concrete being determined. As the fine aggregate content in pervious concrete increases, the porosity, and consequently, the hydraulic conductivity decreases, while the unit weight, strength, and the pollutant removal capacity increases. The amount of porosity required for a pervious concrete pavement to capture the excess rainfall is estimated analytically using Green-Ampt’s model for three most common subgrade soils in the Edwards Aquifer region, Texas for the 100-year 15-min and 100-year 60-min rainfall events. The mix-design was optimized based on required porosity and hydraulic conductivity to prevent or minimize the stormwater runoff, while maximizing the strength of pervious concrete for a higher structural integrity.

Monograph Accession #:

01147878

Report/Paper Numbers:

10-3208

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Bin-Shafique, Sazzad
Azfar, Ireen
Weissmann, Jose
Sharif, Hatim Osman

Pagination:

12p

Publication Date:

2010

Conference:

Transportation Research Board 89th Annual Meeting

Location: Washington DC, United States
Date: 2010-1-10 to 2010-1-14
Sponsors: Transportation Research Board

Media Type:

DVD

Features:

Figures (3) ; References (28) ; Tables (5)

Geographic Terms:

Texas

Subject Areas:

Highways; Materials; Pavements; I32: Concrete; I52: Construction of Pavements and Surfacings

Source Data:

Transportation Research Board Annual Meeting 2010 Paper #10-3208

Files:

TRIS, TRB

Created Date:

Jan 25 2010 11:35AM