TY - GEN
T1 - Sustainable field applications of quarry byproducts mixed with large size unconventional aggregates
AU - Qamhia, Issam
AU - Tutumluer, Erol
AU - Ozer, Hasan
AU - Kazmee, Hasan
N1 - Funding Information:
This research study received financial support from the Illinois Department of Transportation (IDOT). Laboratory and field tests were conducted at the Illinois Center for Transportation and the University of Illinois Advanced Transportation Research and Engineering Laboratory (ATREL). The authors thank Sheila Beshears from IDOT for the support and help with materials collection. The authors acknowledge the Illinois aggregate producers who donated the materials used in this study. The authors also thank the research staff of the Illinois Center for Transportation: James Meister, Greg Renshaw as well as all the students at ATREL who provided help during field construction.
Publisher Copyright:
© 2017 Taylor & Francis Group, London.
PY - 2017
Y1 - 2017
N2 - Quarry Byproducts (QBs), usually less than 6 mm in size, are the residual deposits from the production of required grades of aggregate and often stockpiled in excess quantities at the quarries. Recent research at the Illinois Center for Transportation has focused on investigating the performance of large-size aggregates mixed with QB for constructing subgrade replacement and subbase over weak soils. Such a sustainable application linked to commonly used rockfill practice for building construction platforms and low volume road applications over soft subgrade would improve the stability when large aggregates are mixed with QB materials. The appropriate weight mix ratios of the large-size aggregates and the fine QB materials were determined via a laboratory packing study. A combination of 30% dry QB by the weight of the large rock and 25% QB with a moisture content of 2.5% were found to be the optimum quantities of QB to be mixed with the large-size rock on top of a soft subgrade. In the field, two test sections were built to study the construction platform application by shaking and compacting the QB on top of large, 100 to 150 mm, size aggregate materials in one and two lifts using a vibratory roller compactor with the goal to construct a 530-mm layer, topped with 76-mm of regular-sized dense graded capping aggregate material. Other two test sections that were also built as the exact replicates of the construction platform sections were paved with an additional 100-mm thick hot mix asphalt surface to study the low volume road application. Performance monitoring of the unpaved construction platform sections indicated that both the one-lift and two-lift sections showed a good performance under a heavy wheel load by accumulating less than 76 mm of rutting after 20,000 load repetitions.
AB - Quarry Byproducts (QBs), usually less than 6 mm in size, are the residual deposits from the production of required grades of aggregate and often stockpiled in excess quantities at the quarries. Recent research at the Illinois Center for Transportation has focused on investigating the performance of large-size aggregates mixed with QB for constructing subgrade replacement and subbase over weak soils. Such a sustainable application linked to commonly used rockfill practice for building construction platforms and low volume road applications over soft subgrade would improve the stability when large aggregates are mixed with QB materials. The appropriate weight mix ratios of the large-size aggregates and the fine QB materials were determined via a laboratory packing study. A combination of 30% dry QB by the weight of the large rock and 25% QB with a moisture content of 2.5% were found to be the optimum quantities of QB to be mixed with the large-size rock on top of a soft subgrade. In the field, two test sections were built to study the construction platform application by shaking and compacting the QB on top of large, 100 to 150 mm, size aggregate materials in one and two lifts using a vibratory roller compactor with the goal to construct a 530-mm layer, topped with 76-mm of regular-sized dense graded capping aggregate material. Other two test sections that were also built as the exact replicates of the construction platform sections were paved with an additional 100-mm thick hot mix asphalt surface to study the low volume road application. Performance monitoring of the unpaved construction platform sections indicated that both the one-lift and two-lift sections showed a good performance under a heavy wheel load by accumulating less than 76 mm of rutting after 20,000 load repetitions.
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M3 - Conference contribution
AN - SCOPUS:85058570941
SN - 9781138295957
T3 - Bearing Capacity of Roads, Railways and Airfields - Proceedings of the 10th International Conference on the Bearing Capacity of Roads, Railways and Airfields, BCRRA 2017
SP - 1127
EP - 1134
BT - Bearing Capacity of Roads, Railways and Airfields - Proceedings of the 10th International Conference on the Bearing Capacity of Roads, Railways and Airfields, BCRRA 2017
A2 - Loizos, Andreas
A2 - Al-Qadi, Imad L.
A2 - Scarpas, A. Tom
PB - CRC Press/Balkema
T2 - 10th International Conference on the Bearing Capacity of Roads, Railways and Airfields, BCRRA 2017
Y2 - 28 June 2017 through 30 June 2017
ER -