01124418

Component

https://doi.org/10.3141/2113-16

http://scholar.google.com...ller&publication_year=2009

Portland cement pervious concrete (PCPC) is a material of increasing interest for parking lots and other applications. PCPC typically consists of coarse aggregates, portland cement, water, and various admixtures. Similar materials are used for cement-stabilized drainage layers in highway and airport pavements. In this research, in-service PCPC pavements were inspected in the field, and cores were removed in order to investigate properties in the laboratory. Field evaluation methods included visual inspection, two surface drainage measurements, and an indirect-transmission ultrasonic pulse velocity (UPV) test. Laboratory testing methods included void ratio, unit weight, compressive strength, splitting tensile strength, hydraulic conductivity, and direct-transmission UPV. Because it is compacted on the surface with screeds or rollers, PCPC generally has higher strength, lower void ratio, and lower permeability at the surface than at the bottom. Therefore, the properties of the tops and bottoms of core samples were compared. Generally, the PCPC installations evaluated under this research project have performed well in freeze–thaw environments with little maintenance required. No visual indicators of freeze–thaw damage were observed. With the exception of some installations in which the pore structure was sealed during construction with wet mixtures or overcompaction, nearly all sites showed fair to good infiltration capability on the basis of drain-time measurements.

01145990

09-0888

English

pp 132-139

2009

Transportation Research Record: Journal of the Transportation Research Board

9780309126274

Print

Figures (9) ; References (11) ; Tables (1)

Coarse aggregates; Compressive strength; Concrete; Concrete pavements; Core samples; Field tests; Freeze thaw durability; Laboratory tests; Pavement performance; Permeability coefficient; Porous pavements; Portland cement; Tensile strength; Void ratios

Ultrasonic pulse velocity

Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I32: Concrete

TRIS, TRB, ATRI

Jan 30 2009 5:08PM

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• Sampling and Testing Latex-Modified Concrete for Permeability to Chloride Ion
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