|Table of Contents|

Influence of Quartz on Mechanical Property of Modified Loess with Consolid System(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2021年02期
Page:
60-68
Research Field:
Publishing date:

Info

Title:
Influence of Quartz on Mechanical Property of Modified Loess with Consolid System
Author(s):
TIAN Wei1;  ZHANG Xu-dong1;  JIA Neng1;  LI Teng1;  XU Shang-jie2
1. School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China; 2. Xigaze Municipal Water Resources Bureau, Xigaze 875000, Xizang, China
Keywords:
geotechnical engineering;  consolid system;  improved loess;  uniaxial compressive strength;  quartz powder
PACS:
TU411.3
DOI:
10.19815/j.jace.2020.07087
Abstract:
In order to further improve the strength of the existing loess and solve the problem of high cost of loess improvement, based on the performance of modified loess with consolid system and its improvement mechanism, it was proposed for the first time that quartz powder with different fineness and content(the quartz powder used in the experiment comes from the waste sand of 40, 200 and 1 000 mesh)was added to improve the consolid system to improve the performance. Through uniaxial compression test, the optimal ratio of quartz powder in the modified loess with consolid system was determined, and the influences of the fineness and content of quartz powder on the compressive strength, stress-strain curve, failure pattern and internal friction angle of the improved loess were discussed. Combined with scanning electron microscope, the improvement mechanism was discussed, and the Mohr-Coulomb strength theory was further used to analyze the change rule of cohesive force and internal friction angle under the condition of double mixing. The study results show that the strength of loess can be improved by adding quartz powder and consolid system alone, and the compressive strength of loess can be significantly improved by adding 10%(mass fraction)and 200 mesh of quartz powder in the process of modified loess with 2% consolid system. Through scanning electron microscope test, it is concluded that the consolid system mainly adopts the skeleton particles in the original part of the cohesive loess formed by agglomerating 200 mesh of quartz powder to improve the loess strength. The addition of consolid system and quartz powder also affects the stiffness and deformation performance of the modified loess. In addition, quartz powder with different particle size also has different effects on the internal friction angle of loess.

References:

[1] 雷祥义.中国黄土的孔隙类型与湿陷性[J].中国科学:化学,1987(12):1309-1316.
LEI Xiang-yi.Chinese Loess Pore Type and Collapsibility[J].Scientia Sinica:Chimica,1987(12):1309-1316.
[2]何 军.马兰黄土胶结特性及机理试验研究[D].西安:长安大学,2018.
HE Jun.Experimental Study on Bonding Characteristics and Mechanism of Malan Loess[D].Xi'an:Chang'an University,2018.
[3]安 鹏,张爱军,刘宏泰,等.重塑饱和黄土长期渗流劣化机制及其渗透性分析[J].岩土力学,2013,34(7):1965-1971.
AN Peng,ZHANG Ai-jun,LIU Hong-tai,et al.De-gradation Mechanism of Long-term Seepage and Permeability Analysis of Remolded Saturated Loess[J].Rock and Soil Mechanics,2013,34(7):1965-1971.
[4]李 娜,孙军杰,王 谦,等.黄土地基改性处理技术研究进展评述与展望[J].地球科学进展,2017,32(2):209-219.
LI Na,SUN Jun-jie,WANG Qian,et al.Progress Review and Perspective Problems on Loess Foundation Reinforcement by Means of Modification Treatment[J].Advances in Earth Science,2017,32(2):209-219.
[5]侯艺飞.固化剂加固黄土研究综述[C]//中国地质学会.2019年全国工程地质学术年会论文集.北京:《工程地质学报》编辑部,2019:490-497.
HOU Yi-fei.Review on the Study of Solidifying Agent to Reinforce Loess[C]//Geological Society of China.Proceedings of the National Annual Conference on Engineering Geology in 2019.Beijing:Editorial Department of Journal of Engineering Geology,2019:490-497.
[6]姜 利,邢志强,吕世斌.路邦EN-1固化剂稳定土路用性能试验[J].东北林业大学学报,2009,37(6):51-53.
JIANG Li,XING Zhi-qiang,LÜ Shi-bin.Test on Road Performance of Soil-solidified Agent of Condensate EN-1 Stabilized[J].Journal of Northeast Forestry University,2009,37(6):51-53.
[7]张建楠.冻融作用对Aught-set 固化剂改良土力学特性的影响实验分析[D].北京:北京交通大学,2010.
ZHANG Jian-nan.Experimental Analysis of Mechanics Characteristics of Improved Soil by Aught-set Solidified Agent Under Freeze-thawing Impacts[D].Beijing:Beijing Jiaotong University,2010.
[8]TB 10001—2016,铁路路基设计规范[S].
TB 10001—2016,Code for Design of Railway Earth Structure[S].
[9]EREN S,FILIZ M.Comparing the Conventional Soil Stabilization Methods to the Consolid System Used as an Alternative Admixture Matter in Isparta Daridere Material[J].Construction and Building Materials,2009,23(7):2473-2480.
[10]SECO A,RAMIREZ F,MIQUELEIZ L,et al.The Use of Non-conventional Additives in Marls Stabilization[J].Applied Clay Science,2011,51(4):419-423.
[11]SECO A,RAMIREZ F,MIQUELEIZ L,et al.Stabilization of Expansive Soils for Use in Construction[J].Applied Clay Science,2011,51(3):348-352.
[12]KISHAN K,MISHRA C B,AMIN A A.Comparative Study of Thickness Design of Flexible Pavement by Use of Stabilizers in Black Cotton Soil[J].Journal of International Academic Research for Multidisciplin-ary,2014,2(6):170-176.
[13]TAILOR R M,SHAH N C.Applications of Innovative Materials for Performance Improvement of Flexible Pavement over Expansive Subgrade[J].International Journal of Geomate,2015,8(1):1197-1202.
[14]龙 旺.抗疏力在软土工程中的应用[D].绵阳:西南科技大学,2016.
LONG Wang.The Consolid System in the Application of Soft Clay Engineering[D].Mianyang:Southwest University of Science and Technology,2016.
[15]张虎元,林澄斌,生雨萌.抗疏力固化剂改性黄土工程性质试验研究[J].岩石力学与工程学报,2015,34(增1):3574-3580.
ZHANG Hu-yuan,LIN Cheng-bin,SHENG Yu-meng.Experimental Study of Engineering Properties of Loess Reinforced by Consolid System[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(S1):3574-3580.
[16]林澄斌.抗疏力固化黄土工程性质试验研究[D].兰州:兰州大学,2015.
LIN Cheng-bin.Experimental Study of Engineering Properties of Loess Reinforced by Consolid System[D].Lanzhou:Lanzhou University,2015.
[17]尹 磊,申爱琴,吴寒松,等.抗疏力固化基层材料击实特性与力学性能研究[J].公路,2019,64(10):245-249.
YIN Lei,SHEN Ai-qin,WU Han-song,et al.Research on Compaction Characteristics and Mechanical Properties of Consolid Solidified Base Materials[J].Highway,2019,64(10):245-249.
[18]彭 宇,张虎元,林澄斌,等.抗疏力固化剂改性黄土工程性质及其改性机制[J].岩石力学与工程学报,2017,36(3):762-772.
PENG Yu,ZHANG Hu-yuan,LIN Cheng-bin,et al.Research on Engineering Properties and Improvement Mechanism of Loess Soil Modified by Consolid System[J].Chinese Journal of Rock Mechanics and Engineering,2017,36(3):762-772.
[19]PATEL A.Geotechnical Investigations and Improvement of Ground Conditions:Chapter 3-soil Stabilization[M].Amsterdam:Elsevier,2019.
[20]陈爱军.颗粒级配对粗粒土强度和变形特性的影响[J].湖南工程学院学报:自然科学版,2017,27(3):75-82.
CHEN Ai-jun.The Influence of Particle Gradation on Strength and Deformation Characteristics of Coarse-grained Soil[J].Journal of Hunan Institute of Engineering:Natural Science Edition,2017,27(3):75-82.
[21]张 盼.掺入黄土的细颗粒粗粒土力学特性研究[D].西安:西安理工大学,2019.
ZHANG Pan.Study on Mechanical Properties of Fine-grained Coarse-grained Soil Mixed with Loess[D].Xi'an:Xi'an University of Technology,2019.
[22]李 磊.硅微粉改良黄土的力学特性及结构性试验研究[D].西安:西安理工大学,2019.
LI Lei.Experimental Study on Mechanical Properties and Structural Properties of Silicon Powder Improving[D].Xi'an:Xi'an University of Technology,2019.
[23]任晓川.基于纳米二氧化硅改良的冻(融)土力学特性的试验研究[D].兰州:兰州大学,2016.
REN Xiao-chuan.Experimental Study of Nano-silica on the Mechanical Properties of Frozen(Thawing)-soil[D].Lanzhou:Lanzhou University,2016.
[24]HAERI S M,HOSSEINI A,SHAHRABI M M,et al.Evaluation and Comparison of Strength Characteristics of Gorgan Loessial Soil Improved with Nano-silica,Lime and Portland Cement[C]//PCSMGE.Proceedings of the 15th Pan-American Conference on Soil Mechanic and Geotechnical Engineering.Buenos Aires:PCSMGE,2019:1820-1827.
[25]CHOOBBASTI A J,SAMAKOOSH M A,KUTANAEI S S,et al.Mechanical Properties Soil Stabilized with Nano Calcium Carbonate and Reinforced with Carpet Waste Fibers[J].Construction and Building Materials,2019,211:1094-1104.
[26]田 威,王 震,张 丽,等.高温作用后3D打印岩体试样力学性能初探[J].岩土力学,2020,41(3):961-969.
TIAN Wei,WANG Zhen,ZHANG Li,et al.Mechanical Properties of 3D Printed Rock Samples Subjected to High Temperature Treatment[J].Rock and Soil Mechanics,2020,41(3):961-969.

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Last Update: 2021-03-20