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167163-1 Report Abstract

Evaluation and Optimization of Durable Pervious Concrete for Use in Urban Areas

Youngmin Joung, Zachary C. Grasley, Texas A&M University, December 2007, 77 pp. (167163-1)

Although pervious concrete was first used in the nineteenth century, it has only recently begun to increase in popularity. As urban areas expand, the problems associated with runoff management have become more challenging. The focus on the negative environmental effects associated with pavement runoff has also increased. These two issues have spurred the recent interest in pervious concrete pavements; pervious concrete, however, has deficiencies which limit its application as pavements. These limitations include low compressive strength, flexural strength, clogging, and other durability issues. The overall purpose of this project was to provide tools to evaluate and improve the durability and strength of pervious concrete such that it may be more confidently employed in urban roadways. The specific objectives of this project were to

(a) investigate the effect of mixture design on strength of pervious concrete (including the effect of fibers),
(b) evaluate effect of clogging materials on coefficient of permeability,
(c) and investigate the use of the dynamic pressurization test to evaluate the durability of pervious concrete.

This report documents the results of the laboratory testing, and presents recommendations for mixture proportioning. In addition, recommendations are provided for optimizing the balance between compressive strength and permeability.

Keywords: Concrete, Pervious, Permeability, Durability, Fibers

ENTIRE REPORT (Adobe Acrobat File – 1.8 MB)