Preliminary laboratory investigation of thermal treated recycled concrete aggregate
for general use in concrete, in G.
The test results reported by Poon and Chan (2006) indicated that the use of 100% recycled concrete aggregate
increased the optimum moisture content and decreased the maximum dry density of the sub-base materials compared to those of natural sub-base materials.
Although the California Department of Transportation (Caltrans) initially limited the amount of RCA to 50 percent by weight of the total aggregate, a special provision in 2003 enabled the use of 100 percent of recycled concrete aggregate
, according to the Caltrans report, "Summary of California Recycled Concrete Aggregate
Many states (at least 38) are currently using recycled concrete aggregate
as aggregate base.
An ASTM member since 1988, Barger was named an honorary member of both C01 and C09 on Concrete and Concrete Aggregates
He currently serves as a member at large on the CO 1 executive subcommittee, and also works on ASTM Committee C09 on Concrete and Concrete Aggregates
The order of chapters in the sections on concrete aggregates
has been revised, and a chapter on mineral admixtures has been separated into two chapters.
ASTM Committee C 9 on Concrete and Concrete Aggregates
became a joint sponsor in 1958 and the name Cement and Concrete Reference Laboratory (CCRL) was adopted in 1960.
In addition to concrete aggregates
, TXI will market specialty products from the facility because of the distinct color of the product in the area.
Contract Notice: The Comhairle~s requirements for single sized and graded roadstone, chippings, gravel aggregates and concrete aggregates
will be delivered under a 2 Year framework agreement for the provision of Uncoated Roadstone in; Lewis, Harris, Uist and Barra.
An ASTM member since 2007, Offenberg serves on Committees C01 on Cement and C09 on Concrete and Concrete Aggregates
Created by ASTM Committee C01 on Cement in 1929, CCRL is currently sponsored by C01 and Committee C09 on Concrete and Concrete Aggregates