Ensaio de Densidade in Situ
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Transcript of Ensaio de Densidade in Situ
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Bárbara RodriguesLorena FrançaLuan Florêncio
Mecânica dos solos Experimental Profª Veruschka Escarião Dessoles Monteiro
Outubro de 2012
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“in situ”
No lugar, no próprio lugar
Lugar determinado
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Barragem de terra feita no rio Xingu para iniciar a construção de um dos reservatórios da usina hidrelétrica de Belo Monte.
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MASSA DO SOLO ÚMIDO Mh = 3080g
UMIDADE DO SOLO h=7,5%
FC = 0,93
MASSA DO SOLO SECO Ms = 2865g
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MASSA DO FRASCO COM AREIA: ANTES: M1 = 7100g
DEPOIS: M2 = 3800g
DIREFENÇA: (M1 – M2) = 3300g
MASSA DA AREIA NO FUNIL: M3 =480g
MASSA DA AREIA NO FURO: MAF = M1 – (M2 + M3) = 2820
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MASSA ESPECÍFICA APARENTE DA AREIA:
ρ = 1,35 g/cm³
VOLUME DO FURO:
Vol = MAF / ρ Vol = 2089
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MASSA ESPECÍFICA DA AMOSTRA
ρs = M / Vol = 2820g / 2089 cm³
ρs = 1,37 g/cm³
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Simplicidade de execução Relação de conceitos Grau de compactação Importância do ensaio no controle de
compactação