Estimativa da tensão de pre-adensamento de argilas saturadas atraves do ensaio de palheta : extensão para limites de liquidez superiores a 70%

AUTOR(ES)
DATA DE PUBLICAÇÃO

2000

RESUMO

This work was based on the "Indirect Method to Pre-consolidation Pressure Estimation Through Vane Tests", proposed by CA VICCHIA (1990). The referred method was reviewed and improved. Therefore, sixty-two samples, previously consolidated with an well defined preconsolidation pressure range, were taken to rupture through a vane test. The values of preconsolidation pressure, undrained shear strength and parameters of characterization (LL, IP, activity etc.) were submitted to statistical treatments. Once more, the experimentation has proved the linear approach to the relationship between the undrained shear strength and preconsolidation pressure, showing this behavioural trend of the soils. The fitted curves present some estimated parameter values with confidence range higher than 85%. Moreover, this research includes a convenient graphical representation of the expressions, based on abacuses, that allowed some conclusions about influential factors in strength of c1ayey soils

ASSUNTO(S)

solos - consolidação - testes analise de regressão argila coesão mecanica do solo

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