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- W947665909 abstract "针对皖中地区高速公路建设中遇到的膨胀土问题,选取合六叶高速公路典型土样开展了系统的承载比（CBR）特性试验研究,并在此基础上探讨了膨胀土作为路基填料的适用性.研究表明：（1）起始含水量对膨胀土CBR值影响显著,CBR最大值对应的含水量高于最佳含水量,且击实功越大,二者差值也越大;（2）CBR膨胀量随起始含水量增大而减小,起始含水量越低,CBR膨胀量就越大,路基的水稳性就越差;（3）当击实功较大时,膨胀土的最佳含水量较小,适合填筑的可变含水量范围较宽,建议现场施工控制采用重型击实标准;（4）在重型击实条件下,将弱膨胀土起始含水量控制在比最优含水量大2%～4%范围内,能同时满足压实度和CBR值要求以用于填筑下路堤,中膨胀土作为路基填料时必须经过改性处理.研究结果对于在膨胀土地区进行公路建设具有参考意义." @default.
- W947665909 created "2016-06-24" @default.
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- W947665909 date "2006-05-22" @default.
- W947665909 modified "2023-09-23" @default.
- W947665909 title "皖中膨胀土的承载比(CBR)强度特性研究" @default.
- W947665909 hasPublicationYear "2006" @default.
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