Durability characteristics of some assorted rocks
Durability characteristics of some assorted rocks
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DOI：
10.1061/(asce)0887-381x(2004)18:3(110
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发表时间：
2004-09
影响因子：
2
通讯作者：
Ganesh Dhakal;J. Kodama;T. Yoneda;K. Neaupane;T. Goto
中科院分区：
文献类型：
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作者：
Ganesh Dhakal;J. Kodama;T. Yoneda;K. Neaupane;T. Goto
研究了寒区泥质碎屑岩的耐久性特征。两组实验，即崩解耐久性（湿-干）和冻融试验，进行了焊接凝灰岩，碳酸盐岩（石灰岩和白云石），砂岩，和片岩样品从日本的北方部分和尼泊尔的喜马拉雅山。在纯水、海水以及不同盐度的水溶液中进行了熟化试验。随着孔隙率的增加，崩解耐久性有下降的趋势。结果表明，随着水中盐浓度的增加，岩石的崩解耐久性增加。冻融实验表明，裂缝开始较早，但扩展速度较慢，在片岩比在焊接凝灰岩和凝灰岩恶化和磨损速度比片岩。
Durability characteristics of some argillaceous clastic rocks from cold regions are investigated. Two sets of experiments, namely slake durability (wet-dry) and freeze-thaw tests, were conducted on welded tuff, carbonates (limestone and dolomite), sandstone, and schist samples collected from northern parts of Japan and from the higher Himalayas of Nepal. The slaking tests were performed in pure water and seawater as well as in aqueous solution of different salinity. A tendency to decrease in slake durability with an increase in porosity is observed. The results reveal that the slake durability of a rock increases with an increase in the concentration of salt in water. Freeze-thaw experiments conducted on welded tuff and schist reveal that crack initiates earlier but extends slower in schist than in welded tuff and that the tuff deteriorates and wears faster than the schist.