Superplasticizers: Reducing Water in Concrete
Superplasticizers or high-range water reducers are new types of chemical admixtures which when incorporated into concrete can cause significant increases in its slump but without any loss...
Disinfecting with Ultraviolet Radiation
The benefits of disinfecting treated effluent to meet discharge permits with ultraviolet radiation instead of ozone or chlorine are that it does not produce toxic chemical residuals like...
EPA's New Land Disposal Rules�A Closer Look
Despite some initial enthusiasm for the new EPA regulations on land disposal of hazardous waste, many critics are now expressing concern for the long-term environmental impact. The dependence...
Lining a Pond to Contain Uranium Tailings
Impermeable pond linings combined with geotextile fabric underlinings are a recent innovation in industrial storage pond construction. A case history of a pond site in New Mexico illustrates...
Land Treatment of Hazardous Waste
Land treatment is one of several available alternatives to the use of landfills and surface impoundments for the treatment and disposal of hazardous waste. Using this technique, hazardous...
New Wastewater Process Cuts Plant Costs 60%
By combining the aerator and the clarifier into one basin, this new wastewater treatment process can slash capital costs up to 60% and operating and maintenance costs up to 45%. Raw sewage...
Coastal Zone '83
Interdisciplinary information and viewpoints on coastal zone management and ocean resources issues related to use, protection, and development are presented. Topics include improved jurisdiction...
Environmental Engineering
The purpose of the 1983 ASCE National Conference on Environmental Engineering was to pursue scientific knowledge and promote sound engineering judgement and practice in the solution of...
Arresting a Toxic Plume
At an abandoned gravel pit in New Hampshire turned into a dump site for hazardous liquid chemical wastes (as well as drummed solid waste), engineers had to race against the clock to stem...
Underpinning with Chemical Grout
During construction of Pittsburgh's new subway, it became necessary to protect the foundations of six downtown buildings. A detailed study of building foundation support options...
Sewers: Repairing Beats Replacing
Rehabilitating decaying sewers can be up to 70% less costly than replacing them. Yet most sewerage agencies wait until a pipe collapses before taking action, necessitating expensive emergency...
Methods of Ice Control
Ice control is the practice of holding ice in place or directing its growth and movement. Methods of ice control in navigable waters including locks are presented. Ice carried downstream...
Emerging Energy/Environmental Trends and the Engineer
Although favorable energy situations presently exist, available fossil fuel sources of energy are limited and as a result there will be an increase in interest in requirements relating...
Upgrading Water Filtration Plants
Adding or improving mixing, flocculation, and sedimentation devices, and changing filter media can significantly increase water filtration plant capacity. Water quality can often be improved...
Australian Coal Terminal Operates Happily Beside Residential Area
A coal terminal was built in Port Kembla, Australia at a $7.56 cost per metric ton. The port was built for $121 million, $18 million below estimate. It included such innovations as the...
Structural Lumber: An Overview of Research Needs
Structural performance of lumber is influenced by the processing steps from forest to final end-use and by the end-use environment. Research needs in processing include: 1) selection of...
Grouting in Geotechnical Engineering
The 63 pages included in these proceedings came from 12 different countries and deal with the pertinent advances in grouting materials and technology that have occurred throughout the...
Research and Development for Increased Productivity�Where We Must Go
A well-focused research and development activity must be the essential foundation of any long-range success in maintaining high and increasing productivity in manufacturing, the efficient...
Natural Treatment Systems in Wastewater Treatment and Sludge Management
Criteria defining performance of natural wastewater treatment and sludge management systems are presented. Objectives of natural treatment systems are to help treat municipal wastewater...
Water and Energy
Technical and Policy Issues
Industrial, political, legal, hydrological, and environmental issues surrounding development of energy and associated water resources are examined in this collection of papers presented...
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