Rudarski radovi br 4 2011 - Institut za rudarstvo i metalurgiju Bor

Content of harmful ingredients<br />
The tested aggregate contains no<br />
harmful ingredients - lumps of clay or<br />
organic matters.<br />
Aggregate resistance to the frost effects<br />
According to the methodology of<br />
Na2SO4crystallization, the tested aggregate<br />
is resistant to frost.<br />
CONCLUSION<br />
These studies have shown that the<br />
crushed stone aggregate from the site Zagradje<br />
Open Pit-5 meets all prescribed requirements<br />
of the standard and can be successfully<br />
used for construction of embankments<br />
and road pad layers. Determined quality<br />
control parameters in aggregate may be<br />
affected both by the actual process of exploitation<br />
and due to possible changes that occur<br />
in the site, so it is needed to perform their<br />
regular monitoring and periodical checking.<br />
REFERENCES<br />
[1] J. Report on Technical Properties the<br />
Crushed Aggregate of Grain Size 0/31,5<br />
mm from the Site "Zagradje-Open Pit<br />
5", RTB Bor Group, with the<br />
Evaluation of Possible Use for<br />
Embankment Construction and Pad<br />
Foundation of Facilities According to<br />
the SRPS Standards, Bor, December<br />
2011t (in Serbian)<br />
[2] M. Ljubojev, D. Ignjatovic, V.<br />
Ljubojev, L. Djurđevac Ignjatovic, D.<br />
Rakic, Deformability and Loading<br />
Capacity of Buried Material in the<br />
Vicinity of the Shaft at the Open Pit<br />
"Zagradje" – Open Pit 2, Mining<br />
Engineering, 2/2010, pp. 107-114<br />
[3] M. Ljubojev, R. Popovic, Fundamentals<br />
of Geomechanics, RTB Bor, Copper<br />
Institute Bor, 2006 (in Serbian)<br />
[4] Report on Deformability and Loading<br />
Capacity of Buried Material in the<br />
Vicinity of the Shaft at the Open Pit<br />
Zagradje 2, Bor, October 2008 (in<br />
Serbian)<br />
[5] R. Popovic, M. Ljubojev, Principles of<br />
Problem solving in Geomechanici, RTB<br />
Bor Copper Institute Bor, Indok Center,<br />
2007 (in Serbian)<br />
[6] M. Ljubojev, R. Popovic, D. Rakic,<br />
Development of Dynamic Phenomena<br />
in the Rock Mass, Mining Engineering<br />
2/2011, pp. 101-108<br />
No 4, 2011. 48<br />
MINING ENGINEERING