Low Cement Content High Strength Concrete
The fundamental objective of this research project was to develop mix design information for structural grade concrete using high fly ash content. The fly ash used in this project was...
Recent Developments, Future Needs and Opportunities in Pavement Technology and Management
The Strategic Highway Research Program (SHRP) represents a massive research effort aimed at developing implementable solutions to five well-defined pavement problem areas. Pavement management...
Distillery Wastes Treated and Recovered Energy Saves $1 Million/Yr
The waste treatment and energy recovery for the world's largest rum distillery (Bacardi Corp., San Juan, Puerto Rico) uses an aerobic digestion to treat distillery wastes...
Flowable Fly Ash: A New Cement Stabilized Backfill
Cement stabilized fly ash placed at a plastic fluid consistency is a new structural backfill material that flows into place, either above or below water, without using sophisticated construction...
Refuse Recycling
The refuse recycling plant at Columbus, Ohio, is a pioneer in burning as fuel a combination of refuse and coal. This hybrid fuel has advantages over burning either alone. One winter in...
Pavement Recycling: Stopgap or Remedy?
Recycled pavements cost less than new asphalt concrete overlays, but no long term data has ratified how recycled pavements' strength and durability compare to virgin material....
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 Evapotranspiration Process: Key to Zero Discharge for Electroplaters
The electroplating process and methods of handling electroplating wastes at the Naval Air Rework Facility in Pensacola, Florida are described. In the past, evapotranspiration as a treatment...
The Hazardous Waste Dilemma
Issues and Solutions
The legal aspects, siting, management, disposal and site restoration of hazardous wastes are explored in an expansion of 30 of the technical papers that were presented at the 1980 conference...
Hazardous Waste Management in California: Lessons for the U.S.
California has what many say is the best hazardous waste management program in the U.S. In fact, the Federal government used the California program as the basis for a national plan for...
Eden's Expressway Reconstruction: Model for Future Highway Rehabs
In the future, increasing miles of our interstate highways will have to be refurbished. Highway engineers may find some useful insights from the way the Illinois Division of Highways recently...
Industry Challenges EPA on Whether Certain Wastes are Hazardous or Not
Before the U.S. can clean up its hazardous wastes, it must first decide which wastes are hazardous, which not. The case histories presented here show that this decision is not always easy...
Concrete-pavement Recycling could Slash Rehab Costs 30%
During the past few years, the recycling of highway pavements, especially asphalt pavements, has been in the news. Yet one promising development has drawn little attention: the recycling...
Mix Design Formulas for Recycled Hot-Asphalt Plant Mixtures
The design of recycled asphalt paving mixtures is compounded by the amount of asphalt and its properties in the reclaimed asphalt pavement. Formulas are presented for proportioning the...
Appropriate Technology in Resource Conservation & Recovery
Six contributions to proceedings of an October 1979 ASCE workshop deal with both developing and industrial countries. A review of debris accumulation in urban areas reveals archaeological,...
Republic Steel Recycling Over 85% of Wastewater from Steel Mill
At its hot-rolling mill in Canton, Ohio, Republic Steel is recycling over 85% of the wastewater it produces. The wastewater contains suspended particles of scale and oils and greases....
Pavement Recycling Catching On
Sparked by rising prices of asphalt, aggregates, energy, and construction labor, and plagued by a decline in the real dollars available for highway and road maintenance, many highway departments...
Solid Waste Research and Development Needs for Emerging Coal Technologies
The workshop was organized into three topical areas: (1)Solid Waste Characterization; (2)reuse, recycle, utilization; and (3)environmental effects: system design, monitoring, disposal....
Single Additive for Recycling Asphalt Pavements
A design concept for recycling deteriorated asphalt pavements using a single reclaiming agent has been developed. The article established guidelines to help engineers determine the physical...
Old Roads Never Die, They are Just Recycled
The cost of repairing roads has increased as asphalt is dependent on the constantly growing price of petroleum. One answer to keeping down costs is asphalt recycling. This article takes...
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