sábado, 4 de agosto de 2007


 Pesamos una muestra de suelo (60 gr.) que pase el tamiz Nº 4
 Pesamos el picnómetro vacío y limpio.
 Pesamos el picnómetro con agua hasta la marca.
 Colocamos la muestra en el picnómetro y echamos agua hasta cubrirla.
 Luego succionamos el aire del picnómetro con una bomba de vacío:
 Durante esta operación se deberá mover el picnómetro con calma, para ayudar a desalojar el aire mejor si se deja reposar 24 horas ya que se trata de un suelo fino.
 Posteriormente debemos llenar con agua destilada el picnómetro y limpiar el exterior del mismo.
 El peso del picnómetro, el agua, y el suelo se denomina Poas, se deberá medir también la temperatura Ti.

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