EFFECTS OF REJUVENATORS AND RECYCLED AGGREGATE RATIO FOR ASPHALT MIXTURES BY REPEATEDLY RECYCLING

2020 ◽  
Vol 76 (2) ◽  
pp. I_251-I_259
Author(s):  
Atsushi KAWAKAMI ◽  
Hiroyuki NITTA ◽  
Masayuki YABU ◽  
Sakura KAKEFUDA ◽  
Yoko KAWASHIMA
Keyword(s):  
Asphalt Mixtures ◽  
Recycled Aggregate

scholarly journals Influence of Partial Coarse Fraction Substitution of Natural Aggregate by Recycled Concrete Aggregate in Hot Asphalt Mixtures

2019 ◽  
Vol 12 (1) ◽  
pp. 250 ◽  
Author(s):  
Debora Acosta Álvarez ◽  
Anadelys Alonso Aenlle ◽  
Antonio José Tenza-Abril ◽  
Salvador Ivorra
Keyword(s):  
Asphalt Concrete ◽  
Coarse Fraction ◽  
Asphalt Mixtures ◽  
Recycled Concrete ◽  
Construction And Demolition Waste ◽  
Recycled Aggregate ◽  
Concrete Aggregate ◽  
Recycled Concrete Aggregate ◽  
Demolition Waste ◽  
Natural Aggregate

The main objective of this work is to evaluate the properties of hot asphalt mixtures that have been manufactured with different recycled concrete aggregate (RCA) percentages (0%, 20%, 40%, 60% and 80% of the fraction 5–13 mm) and asphalt (4%, 4.5% and 5%). Dense asphalt mixtures were made; partially replacing the natural aggregate (NA) fraction between 5 and 13 mm. Marshall specimens were manufactured to determine the main properties of the asphalt concrete (AC) in terms of density, voids, stability and deformation. Additionally, the optimal asphalt content (OAC) was determined, and measured the water sensibility, the stiffness modulus and the permanent deformation. The results corroborate the potential for using these sources of construction and demolition waste (CDW) as a RCA in asphalt concrete and show that the hot asphalt mixtures with up to 40% substitution of natural aggregate by recycled aggregate in the fraction 5–13 mm present good behavior.

scholarly journals Performance Enhancement of Permeable Asphalt Mixtures With Recycled Aggregate for Concrete Pavement Application

2020 ◽  
Vol 7 ◽  
Author(s):  
Bin Lei ◽  
Wengui Li ◽  
Zhiyu Luo ◽  
Vivian W. Y. Tam ◽  
Wenkui Dong ◽  
...  
Keyword(s):  
Performance Enhancement ◽  
Concrete Pavement ◽  
Asphalt Mixtures ◽  
Recycled Aggregate

scholarly journals Wettability and Surface Free Energy of Mineral-Asphalt Mixtures with Dolomite and Recycled Aggregate

2019 ◽  
Vol 471 ◽  
pp. 032011 ◽  
Author(s):  
Wojciech Andrzejuk ◽  
Danuta Barnat-Hunek ◽  
Stanisław Fic ◽  
Joanna Styczeń
Keyword(s):  
Free Energy ◽  
Surface Free Energy ◽  
Asphalt Mixtures ◽  
Recycled Aggregate

Evaluation of the performance of iron ore waste as potential recycled aggregate for micro-surfacing type cold asphalt mixtures

2021 ◽  
Vol 266 ◽  
pp. 121020
Author(s):  
Freddy Richard Apaza Apaza ◽  
Antonio Carlos Rodrigues Guimarães ◽  
Alexander Marcos Vivoni ◽  
Ricardo Schroder
Keyword(s):  
Iron Ore ◽  
Asphalt Mixtures ◽  
Recycled Aggregate

scholarly journals Heat Transfer Characteristics of Asphalt Mixtures with Different Thicknesses

2021 ◽  
Vol 21 (4) ◽  
pp. 169-177
Author(s):  
Kwanho Lee ◽  
Seongkyum Kim
Keyword(s):  
Heat Transfer ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Recycled Aggregate ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics ◽  
Surrounding Environment ◽  
Pavement Damage ◽  
Pavement Thickness

Generally, the main causes of asphalt pavement damage are repeated loads and increased temperatures. The surrounding environment and material factors influence the degree of damage. In this study, the heat transfer characteristics with a change in the asphalt pavement thickness were analyzed. The sample types were the conventional dense asphalt mixture (WC-2), dense asphalt mixture containing 30% recycled aggregate (ReWC-2), and drainage asphalt mixture (PA-13). The mixtures were compacted using a rotary compactor. Thermal accumulation tests on samples with thicknesses of 3, 5, and 10 cm were performed. The values for the 10-cm-thick samples were 1.27 for WC-2, 1.28 for ReWC-2, and 0.91 for PA-13. The thermal conductivity tended to decrease as the pavement thickness increased. An experimental study on the heat transfer characteristics with varying thicknesses of asphalt pavement suitable for energy harvesting was conducted.

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