...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Economic and Environment Geology >Geotechnical Evaluation of Limestones from Cape Monze and Adjoining Areas, Karachi, Pakistan for Their Utilization as Road Aggregate
【24h】

Geotechnical Evaluation of Limestones from Cape Monze and Adjoining Areas, Karachi, Pakistan for Their Utilization as Road Aggregate

机译：巴基斯坦卡拉奇的开普蒙兹角及其邻区石灰石的岩土工程技术对道路骨料的利用的岩土工程评价

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Limestone samples (n = 19) were collected from outcrops of Nari and Gaj formations for the determination of physicochemical and mechanical characteristics. Compressive strength of Nari and Gaj formations varied in the range of 29-63 and 94-32 MPA with mean of 44 and 58 MPA respectively. Density of Gaj Formation (range: 2364- 3264; mean: 2893 Kg/m3) is relatively higher than Nari Formation (range: 2321-3284; mean: 2565 Kg/m3). Mean specific gravity of both Nari and Gaj formations is 2.5. Absorption of Nari Formation (mean: 2.64) is higher than the Gaj Formation (mean: 1.78). Mean Sulphate soundness of Nari Formation (8.7%) is slightly higher than Gaj Formation (8.5%). Abrasion values of both formations are within the AASHTO reference range ( 40%) where mean value of Loss Angles for Nari Formation is 34% and Gaj Formation is 26%. Crushing values of both Nari (10-50%) and Gaj (10-25%) formations where mean of Nari (27%) is double the mean of Gaj (13%) Formation. Mean water-soluble sulphate and chloride of both formations is same (0.1% and 0.04% respectively). Both formations have alkaline pH (8.1±). Mean TOC content of Nari and Gaj formations is 0.4%. Carbonate% of Nari and Gaj formations is 46%. Clay lumps and friable particles in both formations are highly variable but the mean values are within permissible range ( 1%). Elongation Index of both formations is double (30) the standard EI value (15%) set by National Highway Authority, Pakistan. Mean Flakiness value of both formations is 20%.
机译：从Nari和Gaj地层露头收集石灰石样品（n = 19），以确定其理化和力学特性。 Nari和Gaj地层的抗压强度在29-63和94-32 MPA范围内变化，平均值分别为44和58 MPA。 Gaj组的密度（范围：2364-3264;平均值：2893 Kg / m3）相对高于Nari组（范围：2321-3284;平均值：2565 Kg / m3）。 Nari和Gaj地层的平均比重均为2.5。 Nari组的吸收（平均值：2.64）高于Gaj组的吸收（平均值：1.78）。 Nari组的平均硫酸盐含量（8.7％）略高于Gaj组（8.5％）。两种地层的磨损值均在AASHTO参考范围内（<40％），其中纳里地层的损失角平均值为34％，盖伊地层为26％。 Nari（10-50％）和Gaj（10-25％）地层的破碎值，其中Nari（27％）的平均值是Gaj（13％）平均值的两倍。两种地层的平均水溶性硫酸盐和氯化物相同（分别为0.1％和0.04％）。两种地层均具有碱性pH（8.1±）。 Nari和Gaj地层的平均TOC含量为0.4％。 Nari和Gaj地层的碳酸盐％<46％。两个地层中的粘土块和易碎颗粒变化很大，但平均值在允许范围内（<1％）。两种岩层的伸长指数均为巴基斯坦国家公路管理局设定的标准EI值（15％）的两倍（30）。两种地层的平均松脆度值为20％。

著录项

相似文献

  • 外文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号