细集料含量对二灰碎石无侧限强度影响的试验  

Experimental Analysis on the Impact of the Fine Aggregate Content on the Unconfined Compressive Strength of Lime-fly AshBound Macadam

作　　者：吴育琦[1] 况小根 牛宏斌 

机构地区：[1]南京林业大学,南京210037 [2]江西省高速公路管理局 [3]江苏省高速公路工程建设指挥部

出　　处：《东北林业大学学报》2003年第6期80-81,共2页Journal of Northeast Forestry University

摘　　要：以工程实际常用的二灰和集料比例为 2 0∶80的石灰、粉煤灰稳定碎石混合料为研究对象 ,研究分析在不同石灰剂量时 ,细集料含量对无侧限强度的影响规律。结果表明 ,当 2 .3 6mm以下细集料含量在 10 %左右时 ,二灰碎石无侧限强度取得最大值 ,即二灰材料替代细集料可以得到理想强度的二灰混合料 。Kuang Xiaogen(Expres sway Administrative Bureau of Jiangxi Province); Niu Hongbin(Engineering Constru ction Headquarters of Expressway of Jiangsu Province)Using the mixture of lime-fly ash bound macadam with 20:80 proportions of lime-f ly ash and aggregate which is often used in construction projects as testing mat erial, the impact of fine aggregate content on the unconfined compressive streng th for various lime contents was studied. The result showed that the unconfined compressive strength of the lime-fly ash bound macadam reached the maximum when the fine aggregate whose diameter was smaller than 2.36 mm made up about 10% of the material. Therefore, it is concluded that lime-fly ash bound macadam with d esirable strength is achievable replacing fine aggregates by lime-fly ash, and a t the same time, resistance to water erosion is improved effectively.

关 键 词：细集料 含量 二灰碎石 无侧限强度 影响因素 试验 

分 类 号：U416.214[交通运输工程—道路与铁道工程]