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Based on the compressive strength, flexural strength and freeze-thaw test of the steel fiber reinforced concrete (SFRC) mixed with fly ash, the influence of different fly ash mixing on the basic mechanical properties of steel fiber reinforced concrete and freeze-thaw effect were analyzed, and the thawing mechanism of steel fiber reinforced concrete with high mixing of fly ash was discussed. The test...
This study is aimed at revealing the mechanism of microcrack growth in a sandstone subjected to a uniaxial stress state. Next to direct observation of microcracks in our SEM study, we have determined width of grain boundaries by means of a manually controlled image processing procedure. By comparing deformed with undeformed rock, we have found strong evidence that, in the well cemented sandstone that...
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