The subgrade layer is the lowest pavement layer, which carries loads transferred from upper layers. Different researchers have studied resilient modulus (Mr) of different soils for fine-grained and coarse-grained soil types. layer's response mechanism was found to be those fine coarse materials, it vital improving performance life constructed over it. parameters related that can affect include ...

In order to obtain the soil water retention curve of an unsaturated soil which is defined as the relationship between water content and suction, extensive laboratory tests are essential. These laboratory tests are usually costly and time consuming. Moreover, for most practical problems, it has been found that approximate unsaturated soil properties are adequate for analysis. Thus, empirical pro...

To understand the hydraulic properties of soils, accurate prediction of unsaturated hydraulic conductivity is needed which is commonly derived from the soil water release characteristic. In fine-textured soils the modified Mualem-van Genuchten (MMVG) function has been used extensively to predict the change in relative conductivity with changes in matric potential, but this assumes that the soil...

where the diagonal elements of DI were denoted by cos qpj + i sin (pi. As is well known, the number of real parameters in R, if (4) is not fulfilled, can be counted as follows: the first column Rji is an n dimensional vector of length 1, giving n1 parameters; the second column Rp is of length 1 and is orthogonal to the first column giving n 2 parameters; the third column of R must be a unit vec...

Soil contamination by different hydrocarbons has rapidly expanded worldwide, surpassing the self-purification capacity of soils and increasing number contaminated sites. Although much effort been devoted to study effects diesel on geotechnical properties soil, there is still limited available information about it. Moreover, no maximum retention that soil can have its effect behavior soil. Thus,...

Abstract The shear strength is a fundamental property of soil material under structural loads. determination properties unsaturated soils challenging and time-consuming. Geotechnical predictive models can be utilized to assess the heaving soil. This study attempts propose evaluate parameters compacted These include angle internal friction associated with net normal stress (ϕ'), indicating rate ...

The Yellow River alluvial silt has unique engineering properties and is unstable when encountering moisture. mechanical of subgrade can be impaired by the increase in moisture content due to rainwater infiltration, which a negative effect on traffic safety. To further reveal influence deformation characteristics silt, series monotonic cyclic triaxial tests were conducted with different contents...

A loess stratum was selected as the research object, assuming that slurry diffuses in a hemispherical shape during secondary grouting. Based on unified strength theory describing failure characteristics of and critical condition bolt shear failure, pressure value grouting strata determined theoretically. The reliability theoretical analysis verified by numerical modeling realizing large deforma...