In general, the stone pagoda structures with discontinuous surfaces are vulnerable to lateral forces and severely damaged by earthquakes. After Gyeongju earthquake in 2016 Pohang 2017, numerous were due slippage, rotation, separation of stacked stone. To evaluate seismic resistance masonry structures, we analyzed behavior using shaking table test. Shaking frequency, permanent displacement, maxi...

this study aimed to explore concentration of a low grade sulfide-oxide lead-zinc sample containing 2.3% pb, 1.91% zn taken from changarzeh mine, south natanz, iran. the effects of different parameters such as type and dosage of collector, milling retention time, dosage of sodium sulfur and its preparation time, application of sodium silicate, ph and solid content were investigated in relation t...