[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：»,’½ÅÁ/obbs.3c3t.comˆ/ëæ® ?¸‰3
荷载百分表读数             贯入百分表读数»,’½ÅÁ/obbs.3c3t.comˆ/ëæ® ?¸‰3
         0                               30     »,’½ÅÁ/obbs.3c3t.comˆ/ëæ® ?¸‰3
         0                               50»,’½ÅÁ/obbs.3c3t.comˆ/ëæ® ?¸‰3
         0                               100»,’½ÅÁ/obbs.3c3t.comˆ/ëæ® ?¸‰3
         1                               150»,’½ÅÁ/obbs.3c3t.comˆ/ëæ® ?¸‰3
         1                                200»,’½ÅÁ/obbs.3c3t.comˆ/ëæ® ?¸‰3
         1                                250»,’½ÅÁ/obbs.3c3t.comˆ/ëæ® ?¸‰3
         2                                300»,’½ÅÁ/obbs.3c3t.comˆ/ëæ® ?¸‰3
         3                                350»,’½ÅÁ/obbs.3c3t.comˆ/ëæ® ?¸‰3
         4                                400»,’½ÅÁ/obbs.3c3t.comˆ/ëæ® ?¸‰3
         6                                450»,’½ÅÁ/obbs.3c3t.comˆ/ëæ® ?¸‰3
         8                                 500»,’½ÅÁ/obbs.3c3t.comˆ/ëæ® ?¸‰3
        10                                 550»,’½ÅÁ/obbs.3c3t.comˆ/ëæ® ?¸‰3
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»,’½ÅÁ/obbs.3c3t.comˆ/ëæ® ?¸‰3