The modelling tools for soils and rocks require more and more specific parameters not always available from the standard or usual survey campaigns, this generally for reasons of delay or costs. The use of correlations to solve the gap between available parameters and the required ones is a common practice. Many of them exist but are spread throughout numerous papers or books. The aim of this formulary is to provide a large synthesis of the existing correlations accumulated by the authors during more than 40 years academic and consulting careers.
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Yes, you can access Geotechnical Correlations for Soils and Rocks by Jean-Claude Verbrugge,Christian Schroeder in PDF and/or ePUB format, as well as other popular books in Technology & Engineering & Civil Engineering. We have over one million books available in our catalogue for you to explore.
While performing CPTs, the unit weights of soils are generally not measured, leading to imprecision in derived parameters. Mayne [MAY 07] proposed a formula that relates the saturated unit weight to the CPT sleeve friction and specific gravity of grains (units: kN/m3 and kPa):
[1.1]
He also suggested two simple alternative expressions:
[1.2]
and
[1.3]
Robertson et al. [ROB 15] proposed the following formula to estimate the total unit weight using CPT results:
[1.4]
with Rf expressed in %.
For NC to low overconsolidated clays, Mayne and Peuchen [MAY 12] proposed the following method for a quick estimate of the total unit weight from the cone resistance–depth ratio:
[1.5]
As a rule-of-thumb estimate:
[1.6]
or with a little more refinement:
[1.7]
In addition, for 30 < mq < 70:
[1.8]
If a seismic piezocone is used, γsat can be estimated from the correlation between shear wave and depth, as given by Mayne [MAY 07]:
[1.9]
or the mass density [MAY 99]:
[1.10]
The total unit weight can be estimated from the DMT as follows [MAY 02]:
[1.11]
From Vidalie’s [VID 77] research on French muds, peats and soft clays with 30 < wL < 180, 12 < γ < 20 (kN/m3), and all the soils being close to the A-line on the Casagrande chart, it is possible to derive a closed-form r...
Table of contents
Cover
Table of Contents
Preface
1 Physical Parameters
2 Identification of Soil Types
3 Hydraulic Parameters
4 Strength Parameters of Saturated and Dry Soils
5 Soil Deformations
6 Soil State Parameters
7 Consolidation
8 Coefficient of Earth Pressure at Rest
9 Soil Compaction Tests
10 Unsaturated Soils
11 Cross Relations between In Situ Test Parameters
