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Some shortcomings in the standard South African testing procedures for assessing heaving clay

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dc.contributor.author Stott, P.R.
dc.contributor.author Theron, E
dc.date.accessioned 2018-08-22T08:27:59Z
dc.date.available 2018-08-22T08:27:59Z
dc.date.issued 2015
dc.identifier.issn 2309-8775
dc.identifier.uri http://hdl.handle.net/11462/1572
dc.description Published Article en_US
dc.description.abstract Design of foundations for most light structures in South Africa, and in particular for low-cost housing, relies heavily on particle size analysis and the determination of Atterberg Limits. The tests for these properties are currently performed in commercial materials testing laboratories using the procedures of the CSIR’s Technical Methods for Highways Part 1 (TMH1) (CSIR 1986). SANS 3001 (SANS 2011) is being phased in to replace TMH1. Both are primarily concerned with road construction. Investigations at the Central University of Technology indicate serious shortcomings in both of these norms in the context of foundation design for light structures. Highly plastic material is not usually used as road construction material, and these methods may be adequate to simply identify material so plastic that they should not be used in road construction. Structural foundations, particularly for low-cost housing, do not usually have this option; it is essential to estimate the actual heave potential. This investigation suggests that some of the changes proposed in SANS 3001 may be beneficial for heave assessment, but the most likely application of SANS 3001 could be unsatisfactory in many cases. en_US
dc.format.extent 712 952 bytes, 1 file
dc.format.mimetype Application/PDF
dc.language.iso en_US en_US
dc.publisher Journal of the South African Institution of Civil Engineering en_US
dc.relation.ispartofseries Volume 57;Number 2
dc.subject expansive clay en_US
dc.subject TMH methods en_US
dc.subject SANS 3001 en_US
dc.subject liquid limit en_US
dc.subject plasticity index en_US
dc.subject linear shrinkage en_US
dc.title Some shortcomings in the standard South African testing procedures for assessing heaving clay en_US
dc.type Article en_US

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