Deformation Behaviour of Erodible Soil Stabilized with Cement and Quarry Dust

Abstract

This study was carried using finite element software (Plaxis) in studying the Engineering behavior of erodible soil-quarry dust composite at a proportion of 50% quarry dust and 10% cement. It discusses the effects of decorative street light through numerical analysis using the Finite Elements Method. Plaxis program v8.2 was applied to model the soil behavior. The Mohr-Coulomb model reveals that the deformations are concentrated exclusively on the base course, with the appearance of plastic tension cut-off points on base course. The structure was subjected to double point loads of 50 kN/m each which resulted to 100 kN/m. The results shows that the pavement deformed at load 85.16kN/m which showed that the soil strength cannot withhold the pressure from the street light. The load displacement acting on the base of the highway in study is . The result also shows that failure was concentrated at the base course of the pavement. This was due to the presence of underground water beneath the phreatic level. The quarry dust is a good replacement to weak soil or a good additive to help improved a problematic soil. From analysis, the soil strength lies below the effective stress acting on the pavement which is equal to 85.16 kN/m. It is advisable to replace some quantities of the existing soil and be replaced by quarry dust since quarry dust is a waste product from crushing of stones. Lastly, about 30% of the existing soil should be replaced by either the mixture of lateritic soil and quarry dust or the soil there should be used as subbase which may not be economical.

Optimizing the Properties of Metakaolin-based (Na, K)-Geopolymer Using Taguchi Design Method

“…But their structure is either amorphous or semi-crystalline. They are produced from a mixture of several aluminosilicate materials (with high contents of Si and Al) along with an alkaline-activating solution (mostly Na+ and K+ silicates and hydroxides) [5].…”

“…However, the most-often-used materials are blast furnace slags and ash from the burning of coal and calcined clay. The quarry dust is a good replacement to weak soil or a good additive to help improve a problematic soil [5]. The most commonly used clay is kaolin which upon thermal activation changes into metakaolin.…”

Experimental Modeling and Evaluation Sediment Scouring in Riverbeds around Downstream in Flip Buckets

“…This yielded the following equations for estimating the maximum depth of scour, the maximum scour width, and the distance of the maximum scour location, respectively. This relation is derived to predict the maximum scour depth and the distance of the maximum scour from bucket lip ( ), and to compare the results with previous investigations (Equations (4) and 5…”

“…This structure is an economical alternative to other conventional dissipators such as stilling basins, etc. [4,5]. So far several studies have been carried out to address scouring downstream of flip bucket jets by Bormann and Julien [6]; Jafari and Khiavi [7], Mason and Arumugan [8], Amanian and Urroz [9], Stein et al [10], Afify and Urroz [11] and Cordier et al [12].…”

Coupling Nonlinear Element Free Galerkin and Linear Galerkin Finite Volume Solver for 2D Modeling of Local Plasticity in Structural Material

“…In this regard, multiple specific methods can separately be employed in their relevant part. Although practically acceptable and analytically accurate, those methods suffer from a series of limitations such as a one-way data transition which neglects the global influence of local plasticity [4]. Therefore, stress redistribution and displacement compatibility, cannot be globally obtained.…”