Settlement Analysis of Soil Replaced with Fine Aggregate of Recycled Concrete as Foundation Material | Chapter 09 | Novel Perspectives of Engineering Research Vol. 9

 Crushed Concrete is one of the most prevalent waste products generated by the construction sector (CC). This material is frequently recycled and used for a variety of applications, such as pavement, concrete aggregates, and backfilling. The goal of this research is to see if Crushed Concrete-Fine Aggregate (CC-FA) mixed soils may be used as a foundation material. In Secunderabad, recycled concrete is collected from demolished structures and graded. pH, specific gravity, water absorption, and particle size distribution are all index features of CC-FA. The compaction and shear strength parameters of locally accessible soil are determined after it is partially replaced with CC-FA, i.e. 30 percent, 50 percent, and 70 percent. A numerical analysis is carried out as part of the study utilising finite element software, GeoStudio Sigma/w. The model is subjected to mesh and boundary extent convergence tests. The top 1 m of virgin soil is replaced with a CC-FA and soil mixture. For uniform stress of 200kPa, settlements for various percentages of CC-FA and varying widths of square footing are produced. The tension is applied in five steps to imitate real-world conditions. For all footing widths investigated in this study, 30 percent replacement of CC-FA resulted in the least amount of settling.

Author(S) Details

A. Raj Kumar
Civil Engineering Department, CMR College of Engineering and Technology, Hyderabad, India.

J. Y. V. Shiva Bhushan
Civil Engineering Department, VNR Vignana Jyothi Institute of Engineering and Technology, Hyderabad, India.

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Study on the Effect of Embankment Soil Layers on Stress-strain Characteristics | Chapter 6 | Recent Progress in Plant and Soil Research Vol. 4

 Dam embankments are geotechnical structures that are difficult to understand. The nonlinear behaviour of the construction materials, interactions between the structure and the underlying soil and rock strata, influence of the water load on the structure and the foundation bedrock, and the effects of water saturation all play a role in the deformation of an earth dam. The finite element method (FEM) is frequently used in the design of earth dams to estimate displacements, strains, and stresses in the structure induced by changing loading or boundary conditions. The deformation of an embankment dam begins during the dam's construction. The increase in effective stresses during the development of successive layers of earth material, as well as the effects of material creep, generate these deformations. The Alavian earth dam was chosen for this study. The settlements calculated for 3, 7, 10, and 15 soil layers employed in the construction process were compared to the settlements calculated for single layer embankment simulations. The highest displacement in a single layer dam occurs at the dam's crest, according to the findings. The biggest displacement is created in the middle of the downstream shell as the embankment layers increase. The building simulation layers have little effect on the dam's stresses, but they may have a substantial impact on the dam's deformations. The dam's centre has the most lateral displacement of 9 cm and the highest settlement of 1.3 m, and the lateral displacement and settlement diminishes steadily from there to both abutments. Furthermore, there were more communities on the downstream side. The hydraulic pressure of the water dominates the lateral displacements

Author(S) Details

Farzin Salmasi
Department of Water Engineering, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.

John Abraham
University of St. Thomas, Minnesota, School of Engineering 2115 Summit Avenue St. Paul, Minnesota 55105, USA.

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