Development of In-Place Density Method for Cold In-Place Recycling

Sebaaly, Peter E.; Castro, J.; Hajj, Elie; Western Regional Superpave Center; University of Nevada, Reno. Solaris University Transportation Center; United States. Dept. of Transportation. Office of the Assistant Secretary for Research and Technology

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Development of In-Place Density Method for Cold In-Place Recycling

2018-01-01
By Sebaaly, Peter E. ; Castro, J. ; Hajj, Elie

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Creators:

Sebaaly, Peter E. ; Castro, J. ; Hajj, Elie

Sebaaly, Peter E. ; Castro, J. ; Hajj, Elie Less -
Corporate Creators:

Western Regional Superpave Center ; University of Nevada, Reno. Solaris University Transportation Center ; United States. Dept. of Transportation. Office of the Assistant Secretary for Research and Technology

Western Regional Superpave Center ; University of Nevada, Reno. Solaris University Transportation Center ; United States. Dept. of Transportation. Office of the Assistant Secretary for Research and Technology Less -
Subject/TRT Terms:

[+]

Air Voids Asphalt Pavement Asphalt Pavements Cold In-place Recycling Compaction Field Tests Highways In-Place Density In Place Density Maintenance And Preservation Materials Pavements Research Hub Sand Cone Slabs Water Balloon
Publication/ Report Number:

WRSC-UNR-UTC-CIR-1
Resource Type:

Tech Report
Geographical Coverage:

Nevada ; United States

Nevada ; United States Less -
TRIS Online Accession Number:

01667324
Edition:

Final Report
Corporate Publisher:

University of Nevada, Reno. Solaris University Transportation Center
NTL Classification:

NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance
Abstract:

This report presents the results of a research study funded by the Nevada DOT and the SOLARIS University Transportation Center. The research developed a method for measuring the in-place density of the cold in-place recycled (CIR) layer immediately after compaction. A laboratory experiment was conducted that measured the density of the compacted CIR slabs using the rubber balloon and sand cone methods and compared these measurements to the densities of cores. Based on the statistical analyses of the collected data, it was concluded that measuring the in-place density of the compacted CIR layer using the sand cone method leads to the estimation of in-place air voids that are the closest to air voids of cores obtained from the CIR layer bulked with the Parafilm method. Based on this conclusion, the following ecommendation is made: • Use the sand cone method to measure the in-place density of the of the compacted CIR layer • Measure the maximum theoretical specific gravity of the CIR mix following AASHTO T209 • Calculate the in-place air voids of the CIR layer using the in-place sand cone bulk density of the CIR layer along with the maximum theoretical specific gravity of the CIR mix following AASHTO T269 • Add 2.8% to the in-place air voids calculated from the sand cone measurement to calculate the adjusted in-place air voids • There is 95% confidence that the adjusted in-place air voids will be: -0.9% to +0.5% from the actual inplace air voids measured on cores using the Parafilm method
Format:

PDF
Collection(s):

University Transportation Centers US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:a272e68705380c34f7757242a72778d9c779555bc201346dcaab5e435b4ff8c9
Download URL:

https://rosap.ntl.bts.gov/view/dot/35674/dot_35674_DS1.pdf
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Development of In-Place Density Method for Cold In-Place Recycling

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