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A platform for research: civil engineering, architecture and urbanism
Development of a gyratory compaction procedure for laterite gravels treated with foamed bitumen
Determining of the optimum density of the compacted foamed bitumen-treated materials is an important part of determining the field placement conditions. Laterite gravels tend to be highly susceptible to breakdown during laboratory compaction with the standard Proctor hammer, which may not be representative of field conditions. In this paper, a new method is presented for determining the optimal compaction characteristics of laterite gravels–foamed bitumen mixes. A gyratory compactor was used for compaction. The modified locking point concept was used to determine the number of gyrations to compact mixes of laterite gravels and foamed bitumen. The optimal compaction moisture content was subsequently established at this point. The average number of gyrations that gave the locking point was 44; optimum moisture content (OMC) for compaction varied from 86% to 92% for gravels only. The modified locking point seems to be suitable for determining the optimal compaction characteristics of these mixes.
Development of a gyratory compaction procedure for laterite gravels treated with foamed bitumen
Determining of the optimum density of the compacted foamed bitumen-treated materials is an important part of determining the field placement conditions. Laterite gravels tend to be highly susceptible to breakdown during laboratory compaction with the standard Proctor hammer, which may not be representative of field conditions. In this paper, a new method is presented for determining the optimal compaction characteristics of laterite gravels–foamed bitumen mixes. A gyratory compactor was used for compaction. The modified locking point concept was used to determine the number of gyrations to compact mixes of laterite gravels and foamed bitumen. The optimal compaction moisture content was subsequently established at this point. The average number of gyrations that gave the locking point was 44; optimum moisture content (OMC) for compaction varied from 86% to 92% for gravels only. The modified locking point seems to be suitable for determining the optimal compaction characteristics of these mixes.
Development of a gyratory compaction procedure for laterite gravels treated with foamed bitumen
Namutebi, May (author) / Birgisson, Bjorn (author) / Bagampadde, Umaru (author)
International Journal of Pavement Engineering ; 14 ; 256-264
2013-04-01
9 pages
Article (Journal)
Electronic Resource
English
Development of a gyratory compaction procedure for laterite gravels treated with foamed bitumen
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