NF P94-051

NF P94-051

March 1993
Standard Cancelled

Soil : inverstigation and testing. Determination of Atterberg's limits. Liquid limit test using cassagrande apparatus. Plastic limit test on rolled thread.

Le document fixe la terminologie, décrit l'appareillage et le mode opératoire relatifs à la détermination de deux limites d'Atterberg : limite de liquidité à la coupelle et limite de plasticité au rouleau.

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Main informations

Collections

National standards and national normative documents

Publication date

March 1993

Number of pages

15 p.

Reference

NF P94-051

ICS Codes

93.020   Earthworks. Excavations. Foundation construction. Underground works

Classification index

P94-051

Print number

1 - 01/03/1993
Sumary
Soil : inverstigation and testing. Determination of Atterberg's limits. Liquid limit test using cassagrande apparatus. Plastic limit test on rolled thread.

Le document fixe la terminologie, décrit l'appareillage et le mode opératoire relatifs à la détermination de deux limites d'Atterberg : limite de liquidité à la coupelle et limite de plasticité au rouleau.
Standard replaced by (1)
NF EN ISO 17892-12
July 2018
Standard Current
Geotechnical investigation and testing - Laboratory testing of soil - Part 12 : determination of liquid and plastic limits

<p>This document specifies methods for the determination of the liquid and plastic limits of a soil. These comprise two of the Atterberg limits for soils.</p> <p>The liquid limit is the water content at which a soil changes from the liquid to the plastic state.</p> <p>This document describes the determination of the liquid limit of a specimen of natural soil, or of a specimen of soil from which material larger than about 0,4 mm has been removed. This document describes two methods: the fall cone method and the Casagrande method.</p> <p>NOTE The fall cone method in this document should not be confused with that of ISO 17892‑6.</p> <p>The plastic limit of a soil is the water content at which a soil ceases to be plastic when dried further.</p> <p>The determination of the plastic limit is normally made in conjunction with the determination of the liquid limit. It is recognized that the results of the test are subject to the judgement of the operator, and that some variability in results will occur.</p>

Table of contents
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  • 1 Domaine d'application
    4
  • 2 Références normatives
    4
  • 3 Généralités
    4
  • 3.1 Définitions - Terminologie
    4
  • 3.2 Principe de détermination des limites d'Atterberg
    5
  • 4 Appareillage
    5
  • 4.1 Matériel pour la préparation du sol
    5
  • 4.2 Matériel pour la détermination de la limite de liquidité
    6
  • 4.3 Matériel pour la détermination de la limite de plasticité
    8
  • 5 Mode opératoire
    8
  • 5.1 Préparation du sol
    8
  • 5.2 Détermination de la limite de liquidité
    9
  • 5.3 Détermination de la limite de plasticité
    11
  • 6 Expression des résultats
    11
  • 6.1 Limite de liquidité
    11
  • 6.2 Limite de plasticité
    12
  • 6.3 Indice de plasticité
    12
  • 7 Procès-verbal d'essai
    12
  • 8 Vérifications des instruments et moyens de mesure
    14
  • 9 Bibliographie
    14
  • Figure 1 Représentation des limites d'Atterbreg
    5
  • Figure 2 Appareil de Casagrande
    6
  • Figure 3 Outil à rainurer
    7
  • Figure 4 Système d'évaluation du diamètre du rouleau de sol
    8
  • Figure 5 Remplissage de la coupelle de Casagrande
    9
  • Figure 6 Réalisation de la rainure
    10
  • Figure 7 Fermeture de la rainure
    10
  • Figure 8 Procès-verbal - Exemple
    13
  • Tableau 1 Caractéristiques de l'appareil de Casagrande
    14
  • Tableau 2 Caractéristiques géométriques de l'outil à rainurer
    15
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