Sulfer Extended Asphalt
Since the 1973 oil embargo, the Federal Highway Administration has researched and promoted the experimental use of a new pavement binder, sulfur-extended asphalt (SEA). In SEA paving mixes,...
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...
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...
What's Happened to the Quality of Asphalt�
After the 1973 oil embargo, state highway departments began complaning that the asphalt cement supplied by refineries did not have as before. Although the asphalt met departmental specifications,...
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...
Dallas Expressway Quickly Rehabilitates With Aid of Giant Cold-Milling Machine
The Dallas, Texas Central Expressway, one of the most intensively used roads in the U.S., was plagued by a deteriorating and bumpy surface, and poor skid resistance. The pavement consisted...
Texas Uses Fabric to Protect Pavement from Cracks
Thin asphalt concrete overlays are susceptible to reflective cracking, which is the migration of the cracks in an old pavement into and subsequently through its overlay. To find a remedy...
Porous Friction Course Solves Airport Hydroplaning Problem
Several hydroplaning incidents had occurred at the Greensboro-High Point-Winston Salem Regional Airport, N.C. Hydroplaning occurs when hydrostatic pressure builds up in the field of surface...
Impermeable Asphaltic Concrete Pond Liner
An impermeable dense hydraulic asphaltic concrete solar evaporation pond liner was developed by the Southern California Edison Co. for the Mohave Generating Station, Clark Co., Nevada....
Runway Rebuilding with Daily Use
At Ontario the main runway was rebuilt and 4-inch bituminous overlay put down at night while the runway was in daily use. Existing pavement was portland cement concrete with bituminous...
Military Roads in Forward Areas
The Construction and Maintenance of Roads in the Theater of Operation
The study and recommendations presented in this manual,
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