The Baltic Journal of Road and Bridge Engineering, Volume (16), No (3), Year (2021-10) , Pages (82-110)

Title : ( Durability and Mechanical Properties of Roller Compacted Concrete Containing Coarse Reclaimed Asphalt Pavement )

Authors: alireza mahdavi , Abolfazl Mohamadzadeh Moghaddam , mohammad dareyni ,

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Abstract

The feasibility of utilizing Reclaimed Asphalt Pavement (RAP) as a replacement for coarse aggregates in Roller Compacted Concretes (RCCs) was assessed. This replacement was performed in different volumetric percentages (25%, 50%, 75%, and 100%). During this process, RAP materials were subject to abrasion and impact in the Los Angeles drum and mixer before being added to the mixture. Compressive strength, splitting tensile strength, flexural strength, crack propagation, Ultrasonic Pulse Velocity (UPV), electrical resistivity, density, and water absorption (in 7, 28, and 90 days of age) tests were done on all mixtures. Results show that utilizing RAP in RCC can cause a drop in the mechanical properties, but it has positive effects on crack propagation of the specimens due to their increased toughness. Increasing the amount of RAP in the mixtures has increased their electrical resistivity, likely owing to the hydrophobic properties of RAP, which causes prevention from connecting pores to each other. The relationship between the mechanical properties and UPV of the mixtures was analyzed using regression models. Moreover, one- and two-way ANOVA tests were performed on the results at a 95% confidence level. Finally, replacing the coarse aggregates with RAP only up to 75% is suggested if pre-processing is performed.

Keywords

, Roller Compacted Concrete, Pre-processed reclaimed asphalt pavement, Mechanical properties, Crack propagation, Ultrasonic Pulse Velocity, and Electrical resistivity.
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@article{paperid:1085008,
author = {Mahdavi, Alireza and Mohamadzadeh Moghaddam, Abolfazl and Dareyni, Mohammad},
title = {Durability and Mechanical Properties of Roller Compacted Concrete Containing Coarse Reclaimed Asphalt Pavement},
journal = {The Baltic Journal of Road and Bridge Engineering},
year = {2021},
volume = {16},
number = {3},
month = {October},
issn = {1822-427X},
pages = {82--110},
numpages = {28},
keywords = {Roller Compacted Concrete; Pre-processed reclaimed asphalt pavement; Mechanical properties; Crack propagation; Ultrasonic Pulse Velocity; and Electrical resistivity.},
}

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%0 Journal Article
%T Durability and Mechanical Properties of Roller Compacted Concrete Containing Coarse Reclaimed Asphalt Pavement
%A Mahdavi, Alireza
%A Mohamadzadeh Moghaddam, Abolfazl
%A Dareyni, Mohammad
%J The Baltic Journal of Road and Bridge Engineering
%@ 1822-427X
%D 2021

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