determination of volume change of unsaturated soils during loading and suction change is one of the most important difficulties in testing unsaturated specimens. it is revealed from literature review that various attempts have been made to invent an apparatus that can be used in testing on unsaturated soil specimens, simply and accurately. in this research, details of design and manufacture of ...

Soil-water characteristic curve (SWCC) correlates the water content of a soil to its suction, which is very important property unsaturated soils. Osmotic tensiometers (OTs) have shown their capability in high suction measurement. This study tried use OT combined with pressure plate and WP4C dewpoint potentiometer determine SWCC residual soil. Three OTs different measuring ranges (900 kPa, 1200 ...

Investigating the soil-water characteristics of calcareous soil has a great significance for preventing geological disasters on island-reefs as well maintaining foundation stability hydraulic-filled island-reefs. In this study, silty sands with different fines contents and dry densities were studied to reveal their effects The characteristic curve (SWCC) sand was measured using pressure plate a...

This paper presents and analyzes two new efficient local search strategies for the Boolean Satisfiability (SAT) problem. We start by proposing a local search strategy called configuration checking (CC) for SAT. The CC strategy results in a simple local search algorithm for SAT called Swcc, which shows promising experimental results on random 3-SAT instances, and outperforms TNM, the winner of S...

Fredlund and Xing (1994)'s equation is one of most popular equations in best fitting the soil-water characteristic curve (SWCC) data. It commonly considered that parameters such as a, n m are Cr an input value, which recommended to be1500 kPa or 3000 kPa. Based on analysis this paper, it observed setting be equal 1500 may downgrade performance SWCC data soils with a high air-entry value (AEV). ...

Abstract The soil–water characteristic curve (SWCC) plays an important role in solving the stability and deformation problems of unsaturated soils. In many practical situations, soils are usually experienced by both deformations thermal conditions. this interest, paper proposes a simple effective model to predict combined effect initial density temperature on SWCC be able quantify changes therm...

Numerical models can be valuable tools in the prediction of seepage. The results can often be misleading if proper variational analysis is not performed. Measurement of the soil-water characteristic curve (SWCC) or saturated and unsaturated hydraulic conductivity information is often neglected or minimized. The modeller is therefore forced to develop a seepage model based on estimated soil prop...

The air-entry value (AEV) suction, marking the transition between saturated and unsaturated soil mechanics, is arguably most important parameter interpreted from soil–water characteristic curve (SWCC); its accurate determination being essential for prediction of properties. AEV commonly obtained by a subjective time-consuming graphical construction. This micro-article proposes an objective fram...