Reduction of the cement content in mortar made with fine concrete aggregates
Properties of self-compacting concrete prepared with coarse recycled concrete aggregate
, Construction and Building Materials 24(7): 1129-1133.
Note that these data for reclaimed asphalt pavement and recycled concrete aggregate
are as reported to USGS and are likely extremely low, in part due to limited survey information.
Properties of Concretes Produced with Waste Concrete Aggregate
The use of recycled concrete aggregate
(RCA) in civil works due to shortages of natural aggregate and landfill sites has been common in Europe and countries such as Japan and Australia for more than twenty years.
Staton took more than 7,200 tons of concrete aggregate
materials from the California Avenue and Green Springs Drive bridges.
He also cites a project he has been following since 1990 that used recycled concrete as concrete aggregate
Tenders are invited for work includes approx 8,600 cy unclassified excavation; 1,200 sy recycled concrete aggregate
base course; 3,050 tn hma pavement; 1,000 sf pavement markings; 1,600 lf storm sewer; 4,050 lf underdrain.
These slates have been evaluated chemically and physically for their use as structural lightweight concrete aggregate
Pending actions include: reclaimed concrete aggregate
for use in PCC: coal fly ash embankments; recycled asphalt shingles in HMA and a recommended practice for evaluating the engineering and environmental suitability of recycled materials.
In addition, since Heritage brick is made from concrete aggregate
, it can be economically manufactured virtually anywhere in the world, as opposed to clay brick, which is generally manufactured only in areas where clay-rich soil is present.
West Coast Aggregates supplies all the sand, rock and concrete aggregate
used by the city of San Francisco.
Recycling concrete pavement prevents the recycled concrete aggregate
(RCA) from going into landfills, for example, and, if the recycled material is used locally, can lead to decreased energy consumption and other costs associated with hauling and producing aggregate.
For example, construction materials will include recycled steel, concrete aggregate
made from a natural byproduct of industrial processes, carpets made from non-volatile chemicals which help to contribute to a cleaner environment, and energy-efficient glass.
ConExpo attendees also had the opportunity to hear Charles Luedders of the Federal Highway Administration provide a summary of a five-state study the agency conducted on advanced uses of recycled concrete aggregate