| dc.creator |
GENÇEL, OSMAN |
|
| dc.creator |
Brostow, Witold |
|
| dc.creator |
Filiz, Mumin |
|
| dc.creator |
Ozel, Cengiz |
|
| dc.date |
2009-12-31T22:00:00Z |
|
| dc.date.accessioned |
2020-10-06T09:50:09Z |
|
| dc.date.available |
2020-10-06T09:50:09Z |
|
| dc.identifier |
4cfe023f-b545-4e3f-b7f1-aa7c4b13cadc |
|
| dc.identifier |
https://avesis.sdu.edu.tr/publication/details/4cfe023f-b545-4e3f-b7f1-aa7c4b13cadc/oai |
|
| dc.identifier.uri |
http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/59593 |
|
| dc.description |
Heavyweight concrete is widely used for radiation shielding of nuclear reactors and other structures that require radiation impermeability. Aggregates play here an important role - while hematite and other iron ores are commonly used for the purpose. However, little information on properties of hematite-containing concrete other than radiation shielding data has been reported. We have studied effects of different concentrations of hematite (10 to 50 volume % at 10 % intervals) on physical and mechanical properties of concrete. A unique water-to-cement ratio of 0.42 kg/m(3) and 400 kg/m(3) cement content was selected. Addition of hematite increases the unit weight (density) so that a smaller thickness of concrete is required to provide radiation shielding. After 30 freeze-thaw cycles the plain concrete looses 21.3 % of its compressive strength while the composite containing 10 % hematite looses only 7.8 % of the strength. Concrete and hematite composites have lower drying shrinkage than plain concrete, thus lowering stresses resulting from the shrinkage. |
|
| dc.language |
eng |
|
| dc.rights |
info:eu-repo/semantics/closedAccess |
|
| dc.title |
Concretes Containing Hematite for Use as Shielding Barriers |
|
| dc.type |
info:eu-repo/semantics/article |
|