路面底基层(base course)指的是除最上一层外的其他层被称为“底基层”,在此情况下,最上一层相应地被称为“基层”。 基层主要承受由面层传递的车辆荷载,并将荷载分布到垫层或土基上。当基层分为多层时,其最下面的一层称底基层。在建筑中,基层是指面层下的构造层,包括填充层、隔离层、找平层、垫层和基土等。在沥青路面基层下,用质量较次材料铺筑的次要的承重层或在水泥混凝土路面基层下用质量较次材料铺筑的结构层称作底基层。
粘粒含量很少的低液限粉土或含砂低液限粉土做稳定土路面底基层,目前施工实践较少。
At present, there is seldom construction application of the stabilized earth road subbase using low liquid limit silt soil or sandy silt soil with few fine clay fractions.
采用室内实验并结合道路施工中实际情况研究了石灰、粉煤灰做路面底基层的强度规律。
Through indoor experiments combined with the actual situation in road-building processes, strength varieties of the subsurface made of lime and fine coal ash were studied.
路面工区:包括2个路面作业队。负责本标段的选定层、底基层和面层的生产等管理工作。
Road pavement area: includes 2 pavement construction teams. Be responsible for production and other management work of selected layer, subbase layer and surface layer of this section.
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