全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

基于胶浆原理的二灰碎石设计方法

Keywords: 道路工程,胶浆原理,二灰碎石,设计方法,力学强度

Full-Text   Cite this paper   Add to My Lib

Abstract:

为了提高二灰碎石力学强度,假设二灰碎石为一种三级空间网状结构的分散系,即微分散系二灰胶浆、细分散系二灰砂浆与粗分散系二灰碎石。基于抗压强度最优原则,采用垂直振动试验方法(VVTM)确定二灰胶浆与二灰砂浆质量比,基于密度最大原则,采用逐级填充法确定粗集料级配,基于抗压强度最优原则,确定二灰碎石中二灰砂浆用量。提出了基于胶浆原理的二灰碎石组成设计方法,并通过室内试验与现场试验对设计方法进行性能验证。验证结果表明当石灰与粉煤灰质量比为25时,二灰胶浆力学性能和收缩性能最佳;当细集料质量通过率的递减系数为0.65,二灰与细集料质量比为32时,二灰砂浆力学强度最大;当粒径范围分别为19~37.5、9.5~19、4.75~9.5mm的集料质量比为17116时,混合粗集料密度最大;与传统方法设计的二灰碎石试件力学强度相比,基于胶浆原理设计的试件早期(7d)力学强度提高10%以上,后期(180d)力学强度提高20%以上;不同龄期的VVTM试件与现场芯样抗压强度之比平均为0.909,劈裂强度之比平均为0.904,而静压成型试件与现场芯样抗压强度之比为0.457,劈裂强度之比为0.531,说明VVTM比静压法设计二灰碎石更科学。

References

[1]  BARENBERG E J, THOMPSON M R. Design, construction, and performance of lime, fly ash, and slag pavement[C]∥TRB. 61st Annual Meeting of the Transportation Research Board. Washington DC: TRB, 1982: 1-6.
[2]  SHARPE G W, DEEN R C, SOUTHGATE H F, et al. Pavement thickness designs using low-strength(Pozzolanic)base and subbase materials[J]. Transportation Research Record, 1985(1043): 122-130.
[3]  李振霞,陈渊召.不同类型半刚性基层材料性能的试验与分析[J].长安大学学报:自然科学版,2012,32(1):41-46.LI Zhen-xia, CHEN Yuan-zhao. Test and analysis of properties for different types of semi-rigid base materials[J]. Jounral of Chang’an University: Natural Science Edition, 2012, 32(1): 41-46.(in Chinese)
[4]  JTJ034―2000,公路路面基层施工技术规范[S].JTJ034―2000, technical specifications for construction of highway roadbases[S].(in Chinese)
[5]  滕旭秋.二灰碎石混合料配合比设计及路用性能研究[D].西安:长安大学,2003.TENG Xu-qiu. Mixture design and pavement performance of lime-fly ash stabilized aggregates[D]. Xi’an: Chang’an University, 2003.(in Chinese)
[6]  刘红瑛,戴经梁.骨架密实二灰稳定碎石混合料配合比设计方法[J].长安大学学报:自然科学版,2003,23(2):11-16.LIU Hong-ying, DAI Jing-liang. Design method of mixture skeleton densed with lime-flyash and crushed rock[J]. Journal of Chang’an University: Natural Science Edition, 2003, 23(2): 11-16.(in Chinese)
[7]  蒋应军.多级嵌挤骨架密实二灰碎石组成设计方法研究[J].重庆交通大学学报:自然科学版,2010,29(5):732-736.JIANG Ying-jun. Mix design method for lime-fly-ash-stabilized aggregate of multilevel dense built-in grading structure[J]. Journal of Chongqing Jiaotong University: Natural Science, 2010, 29(5): 732-736.(in Chinese)
[8]  姜爱锋,任惠清.二灰碎石组成配合比设计[J].同济大学学报:自然科学版,1999,27(3):309-313.JIANG Ai-feng, REN Hui-qing. Mixture design of lime-flyash stabilized aggregate[J]. Journal of Tongji University: Natural Science, 1999, 27(3): 309-313.(in Chinese)
[9]  滕旭秋,陈忠达.二灰砂浆配合比设计方法[J].长安大学学报:自然科学版,2005,25(3):37-40.TENG Xu-qiu, CHEN Zhong-da. Mixture design method for lime-fly ash mortar[J]. Journal of Chang’an University: Natural Science Edition, 2005, 25(3): 37-40.(in Chinese)
[10]  车 法,陈拴发,朱金凤,等.骨架密实型二灰稳定碎石配合比设计方法研究[J].河北工业大学学报,2010,39(2):96-99.CHE Fa, CHEN Shuan-fa, ZHU Jin-feng, et al. Research on mixture component design of “skeleton-closed” lime-fly ash stabilized aggregate[J]. Journal of Hebei University of Technology, 2010, 39(2): 96-99.(in Chinese)
[11]  师晖军.高性能二灰稳定碎石混合料设计和路用性能研究[J].筑路机械与施工机械化,2014,31(8):69-72.SHI Hui-jun. Research on mixture design and pavement performance of high performance lime fly-ash stabilized aggregate[J]. Road Machinery and Construction Mechanization, 2014, 31(8): 69-72.(in Chinese)
[12]  陈 磊,滕桃居,石 祥.纤维增强二灰稳定碎石基层干缩性能的试验研究[J].交通标准化,2013(24):63-65.CHEN Lei, TENG Tao-ju, SHI Xiang. Experimental study on fiber reinforcing dry shrinkage performance of two ash stabilization macadam base[J]. Transportation Standardization, 2013(24): 63-65.(in Chinese)
[13]  魏连雨,王 涛,马士宾.非标准养生温度下二灰稳定碎石路用性能试验研究[J].公路,2012(1):34-38.WEI Lian-yu, WANG Tao, MA Shi-bin. Test and study on road performance of lime-flyash stabilized aggregates under non-standard curing temperature[J]. Highway, 2012(1): 34-38.(in Chinese)
[14]  DB 61/T 529―2011,垂直振动法水泥稳定碎石设计施工技术规范[S].DB 61/T 529―2011, specifications for design and construction of cement stabilized macadam base VVTM[S].(in Chinese)
[15]  李明杰,蒋应军,张俊杰,等.半刚性基层材料振动试验方法[J].交通运输工程学报,2010,10(1):7-12.LI Ming-jie, JIANG Ying-jun, ZHANG Jun-jie, et al. Vibration test method of semi-rigid base course material[J]. Journal of Traffic and Transportation Engineering, 2010, 10(1): 7-12.(in Chinese)
[16]  JIANG Y J, FAN L F. An investigation of mechanical behavior of cement-stabilized crushed rock material using different compaction methods[J]. Construction and Building Materials, 2013, 48(11): 508-515.
[17]  JIANG Ying-jun, WONG L N Y, REN Jiao-long. A numerical test method of California bearing ratio on graded crushed rocks using particle flow modeling[J]. Journal of Traffic and Transportation Engineering: English Edition, 2015, 2(2): 107-115.
[18]  田 波,权 磊,牛开民.不同基层类型水泥混凝土路面温度翘曲结构试验与理论分析[J].中国公路学报,2014,27(6):17-26.TIAN Bo, QUAN Lei, NIU Kai-min. Structural experiment and theoretical analysis of thermal curling in JPCP with different base types[J]. China Journal of Highway and Transport, 2014, 27(6): 17-26.(in Chinese)

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133