Performance Based Design for Seismic Design of Geosynthetics-Lined Waste Containment Systems

2013 ◽  
pp. 363-385 ◽  
Author(s):  
Edward Kavazanjian ◽  
Mohamed Arab ◽  
Neven Matasovic
Keyword(s):  
Seismic Design ◽  
Performance Based Design ◽  
Waste Containment ◽  
Waste Containment Systems

Hydraulic Conductivity of Compacted Tropical Clay Treated with Rice Husk Ash

2011 ◽  
Vol 367 ◽  
pp. 63-71 ◽  
Author(s):  
Adrian O. Eberemu ◽  
Agapitus A. Amadi ◽  
Joseph E. Edeh
Keyword(s):  
Hydraulic Conductivity ◽  
Water Content ◽  
Rice Husk ◽  
Industrial Waste ◽  
Rice Husk Ash ◽  
Waste Product ◽  
Dry Density ◽  
Waste Containment ◽  
Hydraulic Behaviour ◽  
Waste Containment Systems

Laboratory study on compacted tropical clay treated with up to 16% rice husk ash (RHA), an agro-industrial waste; to evaluate its hydraulic properties and hence its suitability in waste containment systems was carried out. Soil-RHA mixtures were compacted using standard Proctor, West African Standard and modified Proctor efforts at-2, 0, 2 and 4% of optimum moisture content (OMC). Compacted samples were permeated and the hydraulic behaviour of the material was examined considering the effects of moulding water content, water content relative to optimum, dry density and RHA contents. Results showed decreasing hydraulic conductivity with increasing moulding water content and compactive efforts; it also varied greatly between the dry and wet side of optimum decreasing towards the wet side. Hydraulic conductivity generally decreased with increased dry density for all effort. Hydraulic conductivity increased with rice husk ash treatment at the OMC; but were within recommended values of 1 x 10-7 cm/s for up to 8% rice husk ash treatment irrespective of the compactive effort used. This shows the suitability of the material as a hydraulic barrier in waste containment systems for up to 8% rice husk ash treatment and beneficial reuse of this agro-industrial waste product.

Optimal Performance-Based Seismic Design

2012 ◽  
pp. 174-207
Author(s):  
Hamid Moharrami
Keyword(s):  
Sensitivity Analysis ◽  
Performance Evaluation ◽  
Nonlinear Analysis ◽  
Seismic Design ◽  
Optimization Algorithms ◽  
Optimal Performance ◽  
Performance Based Design ◽  
Real Performance ◽  
Performance Based Seismic Design

In this chapter, the reader gets acquainted with the philosophy of performance-based design, its principles, and an overview of the procedures for performance evaluation of structures. The essential prerequisites of optimal performance-based design, including nonlinear analysis, optimization algorithms, and nonlinear sensitivity analysis, are introduced. The methods of nonlinear analysis and optimization are briefly presented, and the formulation of optimal performance-based design with emphasis on deterministic type, rather than probabilistic- (or reliability)-based formulation is discussed in detail. It is revealed how real performance-based design is tied to optimization, and the reason is given for why, without optimization algorithms, multilevel performance-based design is almost impossible.

Evaluation of Lime Treated Oil Contaminated Soils for Use in Waste Containment Applications

2013 ◽  
Vol 824 ◽  
pp. 66-72
Author(s):  
Thomas Stephen Ijimdiya
Keyword(s):  
Hydraulic Conductivity ◽  
Moisture Content ◽  
Contaminated Soils ◽  
Optimum Moisture Content ◽  
Soil Samples ◽  
Liner Material ◽  
British Standard ◽  
Waste Containment ◽  
Relative Compaction ◽  
Waste Containment Systems

This paper presents the results of an evaluation of lime treated oil contaminated soil for use in waste containment systems. Soil samples were treated with up 6 % lime contents. Specimens were prepared at optimum moisture content and compacted using British Standard Light (BSL) or Standard Proctor (relative compaction = 100%) to evaluate its effectiveness when used in waste containment applications. The hydraulic conductivity values increased with higher lime contents but were less than 1 x 10-9 m/s required for a liner material.

The 2007 Forum on Seismic Design of Piping Systems for the Year 2010

2008 ◽  
Author(s):  
Gerry C. Slagis
Keyword(s):  
Seismic Design ◽  
Performance Based Design ◽  
Piping Systems

A summary of The 2007 Forum on Seismic Design of Piping Systems for the Year 2010 is provided. This forum session was the eleventh in a series that was started in 1992. Previously, the title was Appropriate Criteria and Methods for Seismic Design of Nuclear Piping. In this 2007 forum, the main topics of discussion were: performance-based design, SSE only design, and probabilistic-based design.

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