二灰碎石基层强度的正交试验研究  

Orthogonal Experimentation Research on Strength of Aggregate Stabilized with Lime and Fly-ash

作　　者：段庆普[1] 喻乐华[1] 张军 张清华 

机构地区：[1]华东交通大学土木建筑学院,江西南昌330013 [2]山东省临清市公路局,山东临清252600

出　　处：《华东交通大学学报》2005年第5期30-32,40,共4页Journal of East China Jiaotong University

摘　　要：通过正交试验研究二灰碎石各种材料用量(二灰内比、碎石比例和级配、水泥掺量等)与二灰碎石基层强度的关系,旨在从力学角度得到抗裂性能较佳的半刚性材料.结果表明,水泥掺量是影响二灰碎石早期强度的主要因素,其次是二灰内比.另外,适当增加碎石比例和粗集料含量,可以提高强度和减少收缩裂缝.The relationship between the proportion of aggregate stabilized with lime and fly-ash （ASLF） and strength are found through orthogonal experimentation in this paper, mainly including proportion of Lime and Fly-ash, proportion of aggregate and grading collocation, the cement adding, in order to get the semi-rigid base course material with better properties of anti-cracking. The results show that cement adding is the main factor to effect the early strength of ASLF, the second is proportion of Lime and Fly - ash. In addition, increasing the proportion of aggregate and the content of coarse aggregate can raise strength and reduce shrinkage cracks.

关 键 词：正交试验 二灰碎石 二灰内比 强度 

分 类 号：TU528[建筑科学—建筑技术科学]