Applied Rheology: Publications
J.-C. Baudez, F. Chabot, P. Coussot
Rheological Interpretation of the Slump test

Appl. Rheol. 12:3 (2002) 133-141

Abstract: We examine the validity of the slump test for predicting the yield stress of polymeric suspensions and mineral suspensions. First we propose a modification of this test: in order to make measurements on fluids with high yield stress (of the order of several hundreds of Pascal) we add a mass at the sample top. From detailed observations of the slump in time we show that, for polymeric suspensions (hair gel and sewage sludges), two critical stresses can be distinguished which almost exactly correspond to the two critical stresses (respectively corresponding to a regime change and to the asymptotic slump) observed in rheometry during creep tests. Thus the slump test appears as a practiceful and relevant means to determine the intrinsic properties of these fluids. For mineral suspensions it is shown that the flow abruptly stops after a short time, a behaviour in agreement with the results of rheometrical tests carried out by progressively decreasing the applied stress. In that case the slump also appears to significantly depend on the procedure and cannot be related to a single property of the material. © 2002 Applied Rheology.

DOI 10.3933/ApplRheol-12-133

-- full text PDF available for subscribers --

-- open access PDF extract available for non-subscribers --

You have no password-free access to Applied Rheology Online. If you are a subscriber, enter login details below. For password-free access, we need your IP address. Sample manuscripts for free download can be found here

download to disk (some browsers prefer this option)
login name

Purchase this article for 20 € ?

Forgotten your login details? Send an email with subject "AR login" to

Appl Rheol 12 (2002) issues:


© Applied Rheology 2018