A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preplaced Aggregate Concrete Application on Fort St. Vrain Pcrv Construction
Two distinct concreting methods were employed in the construction of the prestressed concrete reactor vessel (PCRV) of the Fort St. Vrain (FSV) Nuclear Generating Station, a 330 MW(e) High Temperature Gas-Cooled Reactor installation near Denver, Colorado. Preplaced aggregate concrete (PAC) techniques were employed in the PCRV bottom head and the core support floor; conventional job-mixed concrete was used in the PCRV sidewall and top head regions. The successful application of PAC techniques utilized primarily in solving construction difficulties associated with confined and heavily congested regions of the PCRV is described. The PAC technique consists of placing coarse aggregate inside the forms, followed by injection of grout under pressure through embedded pipes to fill the interstices in the aggregate mass. Details of the PAC construction method including grout mix development, grouting equipment, grout pipes layout, grouting sequence, grout level monitoring, concrete temperature control, and pre-construction mockups are described.
Preplaced Aggregate Concrete Application on Fort St. Vrain Pcrv Construction
Two distinct concreting methods were employed in the construction of the prestressed concrete reactor vessel (PCRV) of the Fort St. Vrain (FSV) Nuclear Generating Station, a 330 MW(e) High Temperature Gas-Cooled Reactor installation near Denver, Colorado. Preplaced aggregate concrete (PAC) techniques were employed in the PCRV bottom head and the core support floor; conventional job-mixed concrete was used in the PCRV sidewall and top head regions. The successful application of PAC techniques utilized primarily in solving construction difficulties associated with confined and heavily congested regions of the PCRV is described. The PAC technique consists of placing coarse aggregate inside the forms, followed by injection of grout under pressure through embedded pipes to fill the interstices in the aggregate mass. Details of the PAC construction method including grout mix development, grouting equipment, grout pipes layout, grouting sequence, grout level monitoring, concrete temperature control, and pre-construction mockups are described.
Preplaced Aggregate Concrete Application on Fort St. Vrain Pcrv Construction
F. S. Ople (author)
1975
14 pages
Report
No indication
English
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