摘要
以有效孔隙率和无侧限抗压强度(UCS)作为研究指标,结合贝雷法进行孔隙型水泥稳定碎石的检验、评价以及优化设计。分析了四档不同粗细集料用量对有效孔隙率、透水系数、UCS以及CA值的影响。有效孔隙率随着第一档和第二档集料用量的增加而提高,随着第三档和第四档集料用量的减少而减小,透水系数与有效孔隙率成正比,有效孔隙率越大,透水系数增加趋势越显著。UCS随着第一档集料用量的增加而减小,随着第二档和第三档集料用量的增加出现峰值现象,随着第四档用量的增加而增大。CA值随着第一档集料用量的增加而减小,随着第二档、第三档、第四档集料用量的增加而增大。
To test, evaluate and optimize porous cement stabilized macadam, the Bailey method is adopted, and effective porosity and unconfined compressive strength（UCS） are adopted as research indexes. Effective porosity, UCS and CA affected by four kinds of aggregates are studied. While the quantity of first aggregate and second aggregate is increased, effective porosity is increased. Effective porosity is decreased as the quantity of the third aggregate and forth aggregate decreases. While the quantity of the first aggregate is increased, UCS is decreased. With the quantity of the second aggregate and third aggregate increases, the maximum UCS appeares. While the quantity of the forth aggregate is increased, UCS is increased. CA is decreased while the quantity of the first aggregate is increased and it is increased as the quantity of the second aggregate, third aggregate and forth aggregate is increased.
出处
《江苏建材》
2018年第4期27-30,共4页
Jiangsu Building Materials
基金
江苏省高校自然科学研究面上项目资助(16KJB580004)
关键词
水泥稳定碎石
贝雷法
无侧限抗压强度
有效孔隙率
cement stabilized macadam
Bailey method
unconfined compressive strength
effective porosity
