[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：nDŽÚ¸äá&bbs.3c3t.comÁ^•¬çh°k‹e
荷载百分表读数             贯入百分表读数nDŽÚ¸äá&bbs.3c3t.comÁ^•¬çh°k‹e
         0                               30     nDŽÚ¸äá&bbs.3c3t.comÁ^•¬çh°k‹e
         0                               50nDŽÚ¸äá&bbs.3c3t.comÁ^•¬çh°k‹e
         0                               100nDŽÚ¸äá&bbs.3c3t.comÁ^•¬çh°k‹e
         1                               150nDŽÚ¸äá&bbs.3c3t.comÁ^•¬çh°k‹e
         1                                200nDŽÚ¸äá&bbs.3c3t.comÁ^•¬çh°k‹e
         1                                250nDŽÚ¸äá&bbs.3c3t.comÁ^•¬çh°k‹e
         2                                300nDŽÚ¸äá&bbs.3c3t.comÁ^•¬çh°k‹e
         3                                350nDŽÚ¸äá&bbs.3c3t.comÁ^•¬çh°k‹e
         4                                400nDŽÚ¸äá&bbs.3c3t.comÁ^•¬çh°k‹e
         6                                450nDŽÚ¸äá&bbs.3c3t.comÁ^•¬çh°k‹e
         8                                 500nDŽÚ¸äá&bbs.3c3t.comÁ^•¬çh°k‹e
        10                                 550nDŽÚ¸äá&bbs.3c3t.comÁ^•¬çh°k‹e
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nDŽÚ¸äá&bbs.3c3t.comÁ^•¬çh°k‹e