[公路] CBR 试验一个小问题 [复制链接]

CBR试验中45N如何确定？是否根据测力环Y=AX+B计算，如是的话，那数值很小该如何控制？我做试验时测得数据如下，请版主帮我看一下：ÿ—¦·k´~h bbs.3c3t.comn}
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荷载百分表读数             贯入百分表读数ÿ—¦·k´~h bbs.3c3t.comn}
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         0                               30     ÿ—¦·k´~h bbs.3c3t.comn}
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         0                               50ÿ—¦·k´~h bbs.3c3t.comn}
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         0                               100ÿ—¦·k´~h bbs.3c3t.comn}
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         1                               150ÿ—¦·k´~h bbs.3c3t.comn}
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         1                                200ÿ—¦·k´~h bbs.3c3t.comn}
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         1                                250ÿ—¦·k´~h bbs.3c3t.comn}
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         2                                300ÿ—¦·k´~h bbs.3c3t.comn}
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         3                                350ÿ—¦·k´~h bbs.3c3t.comn}
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         4                                400ÿ—¦·k´~h bbs.3c3t.comn}
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         6                                450ÿ—¦·k´~h bbs.3c3t.comn}
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         8                                 500ÿ—¦·k´~h bbs.3c3t.comn}
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        10                                 550ÿ—¦·k´~h bbs.3c3t.comn}
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该土为粉土质砂                这样的话该土的CBR值很低，不知是什么原因造成的，请版主多多指导，谢谢ÿ—¦·k´~h bbs.3c3t.comn}
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