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41 Result(s)
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Timothy G. Townsend
English
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Article
The hidden economic and environmental costs of eliminating kerb-side recycling
Local governments provide household collection of garbage and recyclables on a routine schedule, and these recycling programmes represent the most visible opportunity for everyday citizens to engage in sustain...
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Book Series
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Chapter
Construction Materials and Their Properties
Although dominated by a few major categories, a vast array of different raw materials and construction products enter the built environment as part of modern buildings, roads, and other infrastructure. Materia...
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Chapter
Generation
CDD generation estimates have not historically received the same attention as other waste streams, such as MSW or hazardous waste. The mass of CDD materials resulting from an activity depends heavily on the ty...
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Chapter
Managing Disaster Debris
The professional involved in CDD management and regulation will often deal with the management of CDD resulting from natural and human-induced disasters or be responsible for participating in disaster debris p...
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Chapter
CDD Recycling Approaches and Policies
This chapter explores common approaches employed by contractors and others to collect, separate, store, and transport CDD materials to an appropriate recycling facility or end market. Additional subjects in th...
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Chapter
Markets for Materials Recovered from CDD
CDD recycling facility operators operate under the business model of charging a fee to accept debris loads, processing the debris to create as many saleable products as possible, and then providing these produ...
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Book
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Chapter
Introduction to Construction and Demolition Debris
The universe of construction and demolition debris materials, sources, and management methods are introduced in this chapter. This chapter begins by providing an overview of the importance of understanding the...
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Chapter
CDD Composition
An understanding of CDD composition is important for several reasons. For one, a contractor can better plan for the management and potential recovery of debris components. Recycling facility operators can appr...
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Chapter
Hazardous and Dangerous Materials in CDD
Multiple construction materials and articles used in buildings and other infrastructure inherently contain chemicals or minerals that under some management scenarios pose a potential risk to human health and t...
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Chapter
Sustainable Construction Materials Management
Opportunities for recovery and recycling resources from CDD are now commonly practiced in many parts of the world, though challenging economics and market conditions persist. However, the importance of CDD man...
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Chapter
Processing CDD for Recycling
Chapter 6 reviewed the various approaches for capturing CDD for recovery and diverting as much material as possible from landfill disposal. In some cases, homogenous CDD...
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Chapter
CDD Landfills
In this chapter, current science and technology related to the land disposal of CDD are introduced, with one objective to provide the reader with a sense of the potential environmental concerns that may result...
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Article
Approximation of transient redox boundary conditions: its application to numerical analysis of iron plume migration near landfills
An efficient scheme is presented that attempts to implement the moving boundary conditions in a two-dimensional finite difference analysis model that simulates reductive dissolution and subsequent precipitatio...
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Article
Use of Coal Fly Ash or Glass Pozzolan Addition as a Mitigation Tool for Alkali-Silica Reactivity in Cement Mortars Amended with Recycled Municipal Solid Waste Incinerator Bottom Ash
Municipal solid waste incinerator bottom ash was evaluated for its alkali aggregate reactivity in cement mortars. Subsequently, two wastes were evaluated as supplementary cementitious materials for their effic...
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Article
Trace chemical partitioning in construction and demolition debris fines: process and market implications
Construction and demolition debris (CDD) fines, a residue generated from mechanized CDD recycling, can often be beneficially reused. Concentrations of chemicals of potential concern in CDD fines should be eval...
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Article
Estimates of solid waste disposal rates and reduction targets for landfill gas emissions
Landfill disposal of solid waste is one of the largest sources of methane emissions. Analysis of gas collection systems at more than 850 US landfill sites suggests that emissions have been underestimated by as...
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Book
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Chapter
The Landfill’s Role in Sustainable Waste Management
The management of municipal solid waste (MSW) in many countries throughout the world has changed significantly over the past 50 years, with a shift from uncontrolled dum** or burning to complex systems that ...
