摘要
土是路基施工中重要原材料之一,室内承载比(CBR)是路基土和路面的强度指标,本文通过制作不同干密度的CBR试件,经过4昼夜饱水后检测膨胀量并做贯入试验,得到不同击实度时对应的土的CBR值关系。根据击实度与CBR关系图进一步判断所选择的土源能否满足设计要求,为建设工程选择土源提供依据。
Soil is one of the important raw materials in subgrade construction. The California bearing ratio(CBR) is the strength index of subgrade soil and pavement. This paper produces CBR specimens with different dry densities and measures the amount of expansion after4 days of flooding,and conducts penetration test. The CBR value relationship of the corresponding soil when different degrees of compaction are obtained. According to the relationship between the degree of compaction and the CBR, it is further determined whether the selected soil source can meet the design requirements and provide a basis for selecting the soil source for the construction project.
作者
董月灯
DONG Yue-deng(Shanghai Zhongcehang Engineering Testing Consulting Co.,Ltd.,Shanghai 200438,China)
出处
《价值工程》
2019年第12期182-184,共3页
Value Engineering
关键词
室内承载比
CBR
试验检测
土
路基施工
California bearing ratio
CBR
test detection
soil
roadbed construction
