压实度的评定及计算方法是什么?

2025-03-15 16:07:09
推荐回答(1个)
回答1:

检验评定段的压实度代表值K(算术平均值的下置信界限)为:
K=K1-(ta/ Ft)*S大于等于K0
式中:k1——检验评定段内各测点压实度的平均值;
   ta----t分布表中随测点和保证率(或置信度o)而变的系数;乙见表9-1采用的保证率:高速公路、一级公路:基层、底基层为99%;路基、路面面层为95%;其他公路:基层、底基层为95%;路基、路面面层为90%;
   S——检测值的标准差;
   Ft,——检测点数开根号;
   Ko——压实度标准值。
(1)路基、基层和底基层:K≥Ko,且单点压实度Ki全部大于等于规定值减2个百分点时,评定路段的压实度合格率为100%;当K≥Ko。且单点压实度全部大于等于规定极值时,按测定值不低于规定值减2个百分点的测点数计算合格率。
   K(2)路堤路段施工段落短时,分层压实度应每点符合要求,且样本数不少于6个。
(3)沥青面层:K≥Ko,且全部测点大于等于规定值减1个百分点时,评定路段的压实度合格率为100%;当K≥Ko按测定值不低于规定值减1个百分点的测点数计算合格率。
   K

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