Uso de materais não convencionais para base de pavimentos asfálticos no muunicípio de Aparecida de Goiânia - GO
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Data
2011-03-29
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Universidade Federal de Goiás
Resumo
The city of Aparecida de Goiania-GO has a current estimate of 16,782,313 m² of urban roads, and there are still 51.5% to be paved. However, the technical staff of the mayor is facing a challenge related to the purchase of lateritic gravel for paving of these streets. Taking into account that most roads in the city has a low volume of traffic
(N ≤ 5.105), it becomes necessary to find an alternative solution to this adversity to show technical and economic viability. Through a partnership between the Federal University of Goiás (UFG) and the city hall of Aparecida de Goiânia-GO, it was started a study to propose the use of nonconventional materials in paving. This way, initially a study was developed through laboratory tests of characterization, compactation, swelling, California Bearing Ratio and dynamic triaxial with the following materials: soil typical abundant in the area, crushed rock, quarry waste and hydrated lime type III and lateritic gravel. The results of these tests presented better performances for the mixtures soil (50%)-crushed rock(50%), soil(50%)- quarry waste(50%) and soil(91%)-lime(9%) which were the samples chosen for use in experimental pavement. To evaluate the behavior of these mixtures and lateritic gravel at layer pavement were used tests of Dynamic Cone Penetrometer (DCP), loading plate and beam Benkelman during construction of subgrade, on base and at coating pre-mixed cold (PMF) and also six and twelve months after opening to traffic. At the end was made a cost estimate of materials used in each subarea for assessment of the economical viability and the possible replacement of lateritic gravel by these materials. It is possible to conclude that the mixtures studied in this research present technical, economical and environmental viability and can be used to replace the lateritic gravel traditionally used in paving in the region.
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CUNHA, Nelson Luis da. The use of non-conventional materials for asphalt pavements base in the city of Aparecida de Goiânia-GO. 2011. 233 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Goiás, Goiânia, 2011.