Preconsolidation pressure is the maximum effective vertical overburden stress that a particular soil sample has sustained in the past. [1] This quantity is important in geotechnical engineering , particularly for finding the expected settlement of foundations and embankments.

From a consolidation test on this soil, the preconsolidation pressure was found to be 102.0 kPa. Finally, the compression index (C c) and swell index (C r) were found to be equal to 0.301 and 0.060, respectively. (a) Calculate the average ultimate primary consolidation settlement that will occur after placement of the sand/gravel layer.

2021年2月15日 · In this study, silt mixtures with three different sand percentages were prepared using the slurry sludge preparation method under 50kPa load, and pre-consolidation pressures were calculated by...

consolidation pressures with the actual pre-consolidation value. The study said that the Tavenas method is the closest result of easy, using arithmetic axis sets .

2024年9月5日 · The maximum pressure to which an overconsolidated soil had been subjected in the past is known as the preconsolidation pressure or over-consolidation pressure (σ c) . When a soil specimen is taken from a natural deposit, the weight of …

Pre-consolidation pressure is the stress that a particular soil has sustained in the past. The proper knowledge of pre-consolidation pressure helps greatly in construction of a safe and serviceable structure. Various methods have been developed in the past for finding pre-consolidation pressure such as the consolidation test which is the most ...

1995年11月1日 · The preconsolidation pressure (up) corresponds to the stress that divides the soil compression curve into a region of small, elastic and recoverable deformation (secondary compression curve) and a region of plastic and unrecoverable deformation (virgin compression curve) (Holtz and Kovacs, 1981; Jamiolkowski et al., 1985).

2023年1月5日 · The pre-consolidation pressure (P c), which reveals the stress history of soil and reflects the maximum stress that soil has experienced, is a critical parameter for understanding the engineering behaviors of soil.

In this paper attempt is made to determine preconsolidation pressure using soil index and plasticity characteristics. Numbers of datasets are used for studying preconsolidation pressure with soil index and plasticity characteristics. Various methods of evaluation of preconsolidation pressure are compared for different compressibility soils.

2010年2月17日 · Over the past 70 years, a number of methods have been proposed for the interpretation of the characteristic vertical effective yield stress, or “preconsolidation pressure,” of compressible soils as defined using the standard oedometer test.