CCM Overtopping Protection on Three Parkway Dams
Cellular concrete mat (CCM) overtopping protection systems have been designed for and will be installed on three small embankment dams along the Blue Ridge Parkway. Based on recent field...
Effects of Turbulence on Price AA Meter Rotors
Field and laboratory studies were conducted during 1988 and 1989 by the U.S. Geological survey to determine the effect of turbulence on the performance of price AA meter rotors. Two different...
Structural FRP Composites
Fiber-reinforced plastics are only just being discovered by civil engineers. Long used in expensive military and aerospace applications, they are beginning to find their way into structures....
Landfill Liner Quality
Landfill liners are being made with new synthetic materials, materials which may be beyond the knowledge of the engineer in charge of the landfill construction project. Engineers need...
A Tale of Two Laboratories
Two unusual research centers are built with the materials that will be studied in them, but the similarities end there. GE Plastics' $10 million Living Environments concept...
Top Projects 1990
A dam, a bridge, an expressway, an interchange, flood control improvements, wastewater treatment and a dredged material containment embankment round out the 1990 Outstanding Civil Engineering...
Advances in Pipeline Materials
Pipelines transport water, storm run-off, process wastes, petroleum, natural gas, slurries, solids, sewage, steam and other fluids either by gravity or under pressure. Pipelines are also...
Selection of Hole Size for Fluidization Pipes
Two-dimensional fluidization experiments are performed on fine and medium coarse quartz sands at depths of 25.4 and 42 cm. Four supply pipes are used with orifice diameters of 1.587 mm...
OTEC Sea Water Systems Technology Status
A workshop was conducted in April 1988 to provide an expert critique of the fabrication and deployment options for the seawater systems (all piping required to draw the seawater) of land-based...
OTEC Seawater Pipe Cost Comparisons
Describes a material which can substantially reduce the cost of seawater pipes and two methods for building and deploying such pipes for use in land-based OTEC installations, outfall sewers,...
U.S. Construction Aggregates
Crushed stone and sand and gravel are the two main sources of natural construction aggregates in the United States as well as in the world. At the beginning of the 20th century, the production...
Availability of Portland Cement
A general description of economic, technical, and environmental factors that affect the types of portland cement available is presented. Economic factors have had a major effect on balance...
Asphalt in the U.S. Transportation Infrastructure
Asphalt has been the major pavement material responsible for development of the transportation infrastructure enjoyed by American citizens. This paper addresses issues to be monitored...
The Future of Steel Structures
The future availability of steel as a construction material is covered in this paper. The advances in the material, design fabrication and erection are discussed. The quality and quantity...
Structural Wood Products
This paper provides a description of available structural wood products. Traditional products such as lumber and plywood are being supplemented by new products that include composite lumber...
Large Stone Hot Mix Asphalt: State of the Art
Improved mix characteristics can be achieved by utilizing existing well-known technologies. Developments have included: more attention to voids in mineral aggregate criteria; adjusting...
Large Stone Mixes Make a Comeback
Large stone hot mix asphalt common at the turn of the century, is making a comeback in popularity in hot mix asphalt design. Large stone hot asphalt mixtures are being used as a way to...
Comparative Evaluation of 4-Inch and 6-Inch Diameter Specimens for Testing Large Stone Asphalt Mixes
Modified Marshall equipment and Gyratory Testing Machine (GTM) are now available for compacting and testing 6-inch diameter specimens to accommodate aggregate up to 2-inch maximum size....
Reliability Assessment of Wood Components
Considerable progress has been made in the nondestructive evaluation (NDE) of wood components since the introduction of the first concepts more than twenty-five years ago. New stress wave...
Bond Strength of Epoxy-Coated Reinforcement to Concrete?An Update
The results of a large-scale study to determine the effect of epoxy coating on bond strength is described. The study addresses the effects of coating thickness, deformation pattern, bar...
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