[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：$PeÏ!†mtú bbs.3c3t.com ¢šåû3ÔQ
荷载百分表读数             贯入百分表读数$PeÏ!†mtú bbs.3c3t.com ¢šåû3ÔQ
         0                               30     $PeÏ!†mtú bbs.3c3t.com ¢šåû3ÔQ
         0                               50$PeÏ!†mtú bbs.3c3t.com ¢šåû3ÔQ
         0                               100$PeÏ!†mtú bbs.3c3t.com ¢šåû3ÔQ
         1                               150$PeÏ!†mtú bbs.3c3t.com ¢šåû3ÔQ
         1                                200$PeÏ!†mtú bbs.3c3t.com ¢šåû3ÔQ
         1                                250$PeÏ!†mtú bbs.3c3t.com ¢šåû3ÔQ
         2                                300$PeÏ!†mtú bbs.3c3t.com ¢šåû3ÔQ
         3                                350$PeÏ!†mtú bbs.3c3t.com ¢šåû3ÔQ
         4                                400$PeÏ!†mtú bbs.3c3t.com ¢šåû3ÔQ
         6                                450$PeÏ!†mtú bbs.3c3t.com ¢šåû3ÔQ
         8                                 500$PeÏ!†mtú bbs.3c3t.com ¢šåû3ÔQ
        10                                 550$PeÏ!†mtú bbs.3c3t.com ¢šåû3ÔQ
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$PeÏ!†mtú bbs.3c3t.com ¢šåû3ÔQ