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Crushed Hydraulic Cement Concrete Adjacent to Underdrains

Project Details
STATE

VA

SOURCE

RIP

START DATE

06/01/18

END DATE

09/30/22

RESEARCHERS

Burak Tanyu

SPONSORS

Virginia Transportation Research Council

KEYWORDS

Blending, Cement content, Crushed aggregates, Drainage structures, Field studies, Geotextiles, Hydraulic cement, Subdrains, Validation

LINKS

Project webpage

Project description

The objectives of this field study are as follows: (1) to confirm the validity under field conditions of Crushed Hydraulic Cement Concrete (CHCC) behavior (fines migrate and tufa precipitates but geotextile continues to function as a filter and does not prevent water from flowing through) observed in the laboratory in a prior study; (2) to develop a threshold percentage for the blending of CHCC with virgin aggregate, and (3) to provide recommendations to Virginia Department of Transportation (VDOT) to generate specifications to allow the use of CHCC/virgin aggregate blends as unbound aggregate when geotextile is present in the drainage system.
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