Use of Concrete Grinding Residue as a Soil Amendment, TR-764

Project Details
STATE

IA

SOURCE

RIP

START DATE

12/15/18

END DATE

10/31/20

RESEARCHERS

Bora Cetin

SPONSORS

Iowa DOT

KEYWORDS

Alkalinity, Compressive strength, concrete, diamond grinding, Erosion control, Laboratory tests, Leaching, Runoff, Soil stabilization, Waste products

Project description

Diamond grinding is a widely-used rehabilitation technique usually referred to as resurfacing of Portland cement concrete (PCC) pavement. As a maintenance operation, diamond grinding can provide a smooth PCC surface with enhanced texture and skid resistance and reduced road noise. Typically, this operation uses a truck equipped with grinding heads at ground level to saw a thin layer of concrete, grinding it into fine particles, while mixing with water to cool blades and reduce dust. This process generates a slurry byproduct known as concrete grinding residue (CGR). The majority of current maintenance practice involves spreading of fresh CGR on roadsides, resulting in potential environmental concerns regarding vegetation growth.
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