中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2017, Vol. 36 ›› Issue (11): 33-36.DOI: 10.3969/j.issn.1674-0696.2017.11.07

• 道路与铁道工程 • 上一篇    下一篇

振动搅拌水泥稳定砂砾强度性能对比研究

李汝凯1,洛桑慈成2,王火明1,周刚3,刘秘强3   

  1. (1.招商局重庆交通科研设计院有限公司,重庆 400067;2.西藏自治区交通勘察设计研究院,西藏 拉萨 850000; 3.重庆交通大学 土木工程学院,重庆 400074)
  • 收稿日期:2016-10-25 修回日期:2017-01-19 出版日期:2017-11-19 发布日期:2017-11-19
  • 作者简介:李汝凯(1989—),男,山东泰安人,工程师,主要从事路面结构与材料方面的研究。E-mail:lirukai@cmhk.com。
  • 基金资助:
    交通运输部建设科技项目(2014 318 J15 070);重庆市社会民生科技创新项目(cstc2015shmszx30010);重庆市交通委员会科技项目 (2016-04);云南省交通运输厅科技项目((2016)140(B))

Comparative Study on Strength Performance of Cement Stabilized Gravel Mix under Vibration Stirring

LI Rukai1, LUOSANG Cicheng2, WANG Huoming1, ZHOU Gang3, LIU Miqiang3   

  1. (1.China Merchants Chongqing Communications Research and Design Institute Co. Ltd., Chongqing 400067,P.R.China; 2. Traffic Survey and Design Institute of Tibet Autonomous Region, Lhasa 850000, Tibet,P.R.China; 3. School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074,P.R.China)
  • Received:2016-10-25 Revised:2017-01-19 Online:2017-11-19 Published:2017-11-19

摘要: 为了给西藏地区实体 工程推荐较优的水泥稳定砂砾的拌和方式,采用室内无侧限抗压强度试验和实体工程取芯强度试验,对常规拌和工艺与振动搅拌工艺下不同养生龄期的水 泥稳定砂砾的抗压强度变化规律及其变异系数进行了对比研究。试验结果表明:在西藏阿里地区特殊气候环境下,水泥稳定砂砾混合料的抗压强度增长相 对缓慢;相比常规搅拌工艺,采用振动搅拌工艺后水泥稳定砂砾混合料的强度变异系数有所减小,混合料拌和更加均匀,抗压强度可提高10%~15%,路用 性能得以提升;在相同设计抗压强度条件下可减少水泥用量,节约工程造价,减少基层裂缝,建议在西藏筑路材料匮乏地段可采用振动搅拌技术提高水泥 稳定基层的强度和稳定性。

关键词: 道路工程, 振动搅拌, 水泥稳定砂砾混合料, 抗压强度, 变异系数

Abstract: In order to recommend a better mixing way of cement stabilized gravel for practical projects in Tibet, the indoor unconfined compressive strength test and practical projects core strength test were adopted, to carry out the comparative study on the variation law of compressive strength and the variation coefficient of cement stabilized gravel of different curing age in conventional mixing process and vibration stirring process. The test results show that the increase of the compressive strength of cement stabilized gravel mix is relatively slow under special climatic conditions of Ali district in Tibet. Compared with the conventional stirring process, the variation coefficient of the strength of cement stabilized gravel mix after vibration stirring is reduced; the mixing of the mixture is more uniform, the compressive strength can be increased by 10%~15%, and the road performance can be improved. With the same designed compressive strength conditions, the vibration stirring technique can reduce the amount of cement, save the project cost and reduce the primary crack. Therefore, it is suggested that the vibration stirring technique can be adopted in the area with the shortage of road construction materials in Tibet to improve the strength and stability of cement stabilized base.

Key words: highway engineering, vibration stirring, cement stabilized gravel mix, compressive strength, variation coefficient

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