沥青碎石粗集料的相对比例  

Coarse aggregates' relative proportion of asphalt macadam

作　　者：魏建国[1] 查旭东[2] 郑健龙[2] 王秉纲[1] 

机构地区：[1]长安大学公路学院,陕西西安710064 [2]长沙理工大学公路工程学院,湖南长沙410076

出　　处：《长安大学学报（自然科学版）》2008年第2期13-17,共5页Journal of Chang’an University(Natural Science Edition)

基　　金：国家自然科学基金项目(50208004);湖南省自然科学基金项目(07JJ6091)

摘　　要：为了研究集料配比对沥青碎石基层骨架结构的影响，采用幂指数法和均匀设计法，对沥青碎石基层粗集料相对比例与粗集料骨架空隙率[VCADRC]的关系进行了研究。对8种幂指数”值下的[VCADRC]进行了比较；并对不同粗集料质量分数和[VCADRC]进行了非线性回归分析。结果表明：泰波公式幂指数”值在0．5～0．6时，[VCADRC]值最小；级配中26．5mm的质量分数与[VCADRC]的相关性最好，且[VCADRC]随着其质量分数的增加而降低；级配中9．5mm的质量分数与[VCADRC]的相关性次之；幂指数法和均匀设计法在确定沥青碎石基层粗集料相对比例方面具有一致性。In order to investigate the influence of aggregate gradation on skeleton structure of asphalt macadam base, the exponential value method and uniform design method were applied to analyze the relationship between coarse aggregates＇ relative proportion and the voids in the coarse aggregate [VCADRC] of asphalt macadam base. The 8 levels of exponential value n were compared） and nonlinear regression analysis between quality content of the coarse aggregates and [VCADRC] was conducted. It is found that the reasonable value of the exponential value n in Taibo formula is from 0.5 to 0.6, which can minimize the [VCADRC] value. And it is also found that the correlation between 26.5 mm quality content of the aggregate gradation and the [VCADRC] is the best, and the [VCADRC] value reduces with the increase of the 26. 5 mm quality content, the correlation between 9.5 mm quality content and the [VCADRC] takes the second place. Finally, the exponential value method and uniform design method are found to have consistency in determining coarse aggregates ＇ relative proportion of asphalt macadam base. 6 tabs, 2 figs, 12 refs.

关 键 词：道路工程 沥青碎石 均匀设计法 粗集料 泰波公式 

分 类 号：U416.214[交通运输工程—道路与铁道工程]