Viscous Rate Effects in Shear Strength of Clay
نویسندگان
چکیده
Viscous rate effects are commonly observed in clay soils in applications that involve high strain rates such as free falling penetrometer tests. Viscous rate effects are not well studied thus affecting reliable interpretation of these applications. This paper presents an investigation of viscous rate effects in clay using laboratory rate studies covering a wide range of strain rates (6 orders of magnitudes). The laboratory investigation has included conventional undrained triaxial compression tests and parallel plate rotational viscometer tests. The viscometer tests allow very high strain rates and are widely used in rheology, however their application to soils has been limited. The data from this study shows that the viscometer tests provide unreasonably low strength values and suggest limitations in the interpretation of the test.
منابع مشابه
Assessment of Changes in Shear Strength Parameters for Soils below Circular Machine Foundation
This paper focuses on the response of circular machine foundation resting on different soils (sand and clay) through studying the variation of soil shear strength parameters and strain with the number of cycles. The objective of the current study is to explore the results related to the parameters of the dynamic load (number of loading cycles and frequency of load) related to the circular footi...
متن کاملEffect of Moisture Content on Shear Strength of Offshore Clay Interface Steel Surface
This paper investigates the effect of moisture content on interface shear strength between offshore clay and steel plate. Although, sensitive and high plasticity offshore clay deposits are widely distributed in Malaysia and many other countries in the world, and steel is a vital construction material for many structures, research works on interaction between offshore clay and steel surface are ...
متن کاملAn Experimental Study on Geogrid with Geotextile Effects Aimed to Improve Clayey Soil
The increase of shear strength in soil, reinforced with the geogrid (alternate reinforcer), is resulted from an increase of modulus of soil hardness, and also from the tensile strength of reinnforcer. The shear strength of contact surface in soil appears due to both the friction strength against the contact surface, and the passive strength formed in front of the elements of the geogri...
متن کاملStrength Characteristics of Clay Mixtures with Waste Materials in Freeze-Thaw Cycles
Waste tires, rubbers, plastic and steel materials, normally produced in every society, enter the environment and cause serious problems. These problems may, to some extent, be reduced by finding applications for them in engineering, for example, they can be used for geotechnical applications as backfill material and solving problems with low shear strength soils. Such materials may be subjected...
متن کاملUse of nanoscale zero-valent iron to improve the shear strength parameters of gas oil contaminated clay
In recent years, the nanoscale zero-valent iron (NZVI) particles have been used successfully for the degradation of hydrocarboncompounds and remediation of other pollutants. Nevertheless, as far as we know, there is no specific study on the improvement of thegeotechnical properties of contaminated soils with hydrocarbon compounds by NZVI. This study used NZVI particles to remove gasoil in a cla...
متن کامل