scholarly journals Optimum Asphalt Content of Hot Recycled Asphalt Mixture in Cold Area under Different Old Materials

2020 ◽  
Vol 1649 ◽  
pp. 012047
Author(s):  
Yanyu Meng ◽  
Jiaqi Zhang ◽  
Zhan Luo ◽  
Liang Kong ◽  
Yuanyuan Gu
Keyword(s):  
Asphalt Mixture ◽  
Recycled Asphalt ◽  
Cold Area ◽  
Asphalt Content

scholarly journals Experimental Research on Crack Resistance of Fiber Asphalt Mixture in Cold Area

2021 ◽  
Vol 791 (1) ◽  
pp. 012072
Author(s):  
Bo Peng ◽  
Shuai Liu ◽  
Wenying Li ◽  
Jingwen Peng ◽  
Yilang Li ◽  
...  
Keyword(s):  
Crack Resistance ◽  
Experimental Research ◽  
Asphalt Mixture ◽  
Cold Area

Utilization of Dacite as Alternative Aggregate in Asphalt Mixture

2012 ◽  
Vol 509 ◽  
pp. 209-214
Author(s):  
Shao Peng Wu ◽  
Pan Pan ◽  
Ming Yu Chen
Keyword(s):  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Major Objective ◽  
Widespread Application ◽  
Bending Tests ◽  
Three Point Bending ◽  
Large Numbers ◽  
Asphalt Content ◽  
The Cost ◽  
Cost Of Construction

With the widespread application of asphalt mixture, current demand from transportation managers for construction and maintenance of their pavement network consumes large numbers of aggregates. If agencies excessively favor to some certain kinds of excellent aggregates, the cost of construction could be considerably expensive. The major objective of this study is to determine the feasibility of utilizing dacite in asphalt mixtures. By means of Marshall, freeze-thaw, rutting and three-point bending tests, the performances of dacite and basalt asphalt mixture are compared. The results of the testing illustrate that dacite asphalt mixture is more susceptible to gradation and asphalt content than basalt asphalt mixture. Meanwhile it is showed that the performances of dacite asphalt mixture can be improved greatly with the involvement of additives including active mineral powder and cement. Furthermore, it is validated that dacite can be used as alternative aggregate in asphalt mixture.

The impact of aging heterogeneities within RAP binder on recycled asphalt mixture design

2021 ◽  
Vol 300 ◽  
pp. 124260
Author(s):  
Wellington L.G. Ferreira ◽  
Verônica T.F. Castelo Branco ◽  
Kamilla Vasconcelos ◽  
Amit Bhasin ◽  
Anand Sreeram
Keyword(s):  
Asphalt Mixture ◽  
Mixture Design ◽  
Recycled Asphalt ◽  
The Impact

Research on Designing Optimum Asphalt Content of Asphalt Mixture by Calculation and Experimental Method

2011 ◽  
Vol 97-98 ◽  
pp. 23-27
Author(s):  
Wen Fang Liu ◽  
Hong Mei Li ◽  
Bei Ping Tian
Keyword(s):  
Experimental Method ◽  
Calculation Method ◽  
Asphalt Mixture ◽  
Test Efficiency ◽  
Marshall Test ◽  
Rapid Calculation ◽  
Asphalt Content ◽  
Hot Mixed Asphalt

In this paper, the initial asphalt content is estimated by the hot-mixed asphalt mixture rapid calculation method in condition that we have no information about the similar project, and five asphalt content are selected with regarding the estimated asphalt content as the middle value, then carries on the Marshall test. The optimuml asphalt content is very accurate by the calculation and experimental method, the method greatly improved the test efficiency.

Performance-based mix design of unmodified and lime-modified hot mix asphalt

2012 ◽  
Vol 39 (7) ◽  
pp. 824-833 ◽  
Author(s):  
Sangyum Lee ◽  
Cheolmin Baek ◽  
Je-Jin Park
Keyword(s):  
Performance Test ◽  
Hot Mix Asphalt ◽  
Permanent Deformation ◽  
Asphalt Mixture ◽  
Fatigue Cracking ◽  
Mix Design ◽  
Direct Tension ◽  
Element Analysis ◽  
Asphalt Content ◽  
National Cooperative

This paper presents the performance evaluation of unmodified and lime-modified hot mix asphalt (HMA) mixtures at varying asphalt content using asphalt mixture performance test developed from National Cooperative Highway Research Program project 9-19 and 9-29 and the viscoelastic continuum damage finite element analysis. Test methods adopted in this study are the dynamic modulus test for stiffness, the triaxial repeated load permanent deformation test for rutting, and the direct tension test for fatigue cracking. The findings from this study support conventional understanding of the effects of asphalt content and lime modification on the fatigue cracking and rutting performance. Finally, the optimum asphalt content for both lime-modified and unmodified mixtures are proposed based on the knowledge gleaned from the performance-based mix design methodology. With additional validation and calibration, the comprehensive methodology described in this paper may serve as the foundation for a performance-based HMA mix design and performance-related HMA specifications.

scholarly journals Long-Term Performance of Pavement Structures with Cold In-Place Recycled Base Course

2021 ◽  
Vol 16 (2) ◽  
pp. 48-65
Author(s):  
Audrius Vaitkus ◽  
Judita Gražulytė ◽  
Andrius Baltrušaitis ◽  
Jurgita Židanavičiūtė ◽  
Donatas Čygas
Keyword(s):  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Asphalt Pavements ◽  
Recycled Asphalt ◽  
Binding Agents ◽  
Pavement Structure ◽  
Pavement Structures ◽  
Base Course ◽  
Surface Distress ◽  
Foamed Bitumen

Properly designed and maintained asphalt pavements operate for ten to twenty-five years and have to be rehabilitated after that period. Cold in-place recycling has priority over all other rehabilitation methods since it is done without preheating and transportation of reclaimed asphalt pavement. Multiple researches on the performance of cold recycled mixtures have been done; however, it is unclear how the entire pavement structure (cold recycled asphalt pavement overlaid with asphalt mixture) performs depending on binding agents. The main objective of this research was to evaluate the performance of cold in-place recycled asphalt pavements considering binding agents (foamed bitumen in combination with cement or only cement) and figure out which binder leads to the best pavement performance. Three road sections rehabilitated in 2000, 2003, and 2005 were analysed. The performance of the entire pavement structure was evaluated in terms of the International Roughness Index, rut depth, and pavement surface distress in 2013 and 2017.

scholarly journals KARAKTERISTIK MARSHALL CAMPURAN HOT ROLLED SHEET WEARING COURSE MENGGUNAKAN BAHAN TAMBAH PLASTIK BEKAS JENIS POLYETHYLENE TEREPHTHALATE

2020 ◽  
Vol 19 (3) ◽  
pp. 179-186
Author(s):  
Yusrizal Yahya ◽  
Desriantomy . ◽  
Robby .
Keyword(s):  
Polyethylene Terephthalate ◽  
Optimum Parameter ◽  
Asphalt Mixture ◽  
Rolled Sheet ◽  
Asphalt Content ◽  
Hot Rolled ◽  
Plastic Content ◽  
Mixture Value

Abstract This study was conducted to determine the benefits of the use of polyethylene terephthalate used plastic as additives in hot asphalt mixture Hot Rolled Sheet Wearing Course. Marshall testing was carried out on specimens using polyethylene terephthalate plastic additives, with variations in the ingredients added 2%, 4%, 6%, 8%, and 10% to the weight of asphalt on specimens with Optimum Asphalt Content. Marshall parameters of test specimens generally meet the existing specifications, except the Void In Mixture value for specimens with plastic content of 8% and 10%. The optimum plastic content obtained from this study is 7.80%. Keywords: asphalt mixture, hot rolled sheet, Marshall parameters, polyethylene terephthalate  Abstrak Studi ini dilakukan untuk mengetahui manfaat penggunaan plastik bekas jenis Polyethylene Terephthalate sebagai bahan tambah pada campuran beraspal panas jenis Hot Rolled Sheet Wearing Course. Pengujian Marshall dilakukan terhadap benda-benda uji yang menggunakan bahan tambah plastik jenis Polyethylene Terephthalate, dengan variasi bahan tambah 2%, 4%, 6%, 8%, dan 10% terhadap berat aspal pada benda uji dengan Kadar Aspal Optimum. Parameter Marshall benda-benda uji umumnya memenuhi spesifikasi yang ada, kecuali nilai Void In Mixture untuk benda-benda uji dengan kadar plastik 8% dan 10%. Kadar plastik optimum yang diperoleh dari studi ini adalah 7,80%. Kata-kata kunci: campuran beraspal, hot rolled sheet, parameter Marshall, polyethylene terephthalate

Sign in / Sign up

Export Citation Format

Share Document