oa Civil Engineering = Siviele Ingenieurswese - The analysis of subsoil moisture movements during heave and possible methods of predicting field rates of heave

Volume 12, Issue 2
  • ISSN : 1021-2000



An analysis of some of the parameters affecting rates 'of heave has been made on a digital computer. This indicates that the shape of the rate-of-heave curve depends to a considerable extent on the initial moisture conditions and the type of soil. Provided the moisture flow beneath the centre of the structure is one dimensional and upward during heave, the time taken for 90 per cent of full heave to occur depends only upon the coefficient of swell Cs' This coefficient can be determined in the laboratory from a modified consolidometer test. Alternatively, it can be estimated from indicator tests.

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