[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：4Üv‘µ@SÄbbs.3c3t.com&È!+jwax
荷载百分表读数             贯入百分表读数4Üv‘µ@SÄbbs.3c3t.com&È!+jwax
         0                               30     4Üv‘µ@SÄbbs.3c3t.com&È!+jwax
         0                               504Üv‘µ@SÄbbs.3c3t.com&È!+jwax
         0                               1004Üv‘µ@SÄbbs.3c3t.com&È!+jwax
         1                               1504Üv‘µ@SÄbbs.3c3t.com&È!+jwax
         1                                2004Üv‘µ@SÄbbs.3c3t.com&È!+jwax
         1                                2504Üv‘µ@SÄbbs.3c3t.com&È!+jwax
         2                                3004Üv‘µ@SÄbbs.3c3t.com&È!+jwax
         3                                3504Üv‘µ@SÄbbs.3c3t.com&È!+jwax
         4                                4004Üv‘µ@SÄbbs.3c3t.com&È!+jwax
         6                                4504Üv‘µ@SÄbbs.3c3t.com&È!+jwax
         8                                 5004Üv‘µ@SÄbbs.3c3t.com&È!+jwax
        10                                 5504Üv‘µ@SÄbbs.3c3t.com&È!+jwax
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4Üv‘µ@SÄbbs.3c3t.com&È!+jwax