|Table of Contents|

Analysis on Tensile Properties of Cemented Soil Compounded with Unequal Length Mixed Basalt Fiber(PDF)


Research Field:
Publishing date:


Analysis on Tensile Properties of Cemented Soil Compounded with Unequal Length Mixed Basalt Fiber
SHEN Chen12 ZHANG Ding-wen12 ZHANG Guo-long3 SONG Tao3 XU Hui-min4
(1. School of Transportation, Southeast University, Nanjing 211189, Jiangsu, China; 2. National Demonstration Center for Experimental Road and Traffic Engineering Education, Southeast University, Nanjing 211189, Jiangsu, China; 3. Anhui Survey & Design Institute of Water Resources & Hydropower Co., Ltd, Hefei 230088, Anhui, China; 4. Central-South Architectural Design Institute Co., Ltd., Wuhan 430000, Hubei, China)
cemented soil basalt fiber tensile strength micro-mechanism
In order to investigate the influence and strengthen mechanism of unequal length mixed basalt fiber on the tensile strength of cemented soil, fibers with length of 6,9,12 mm were selected to mixed. Uniaxial tensile test and scanning electron microscope test were carried out to investigate the variation laws and the micro-mechanism of peak tensile strength, residual tensile strength and toughness of cemented soil. The results show that the tensile stress-strain curves of cemented soil with fiber can be divided into four stages: elastic deformation stage, damage and failure stage, residual strength stage and final failure stage. During the damage and failure stage, the fiber slows down the stress loss rate of cemented soil. The peak tensile strength, residual tensile strength and toughness of cemented soil can be improved effectively by adding different lengths of basalt fiber. The peak and residual tensile strengths of cemented soil with 9 mm and 12 mm length mixed by 3:1 ratio are the highest. Fibers are overlapped and staggered in cemented soil to form a spatial network structure. The anchorage between fibers and cemented soil is the main mechanism to improve the tensile strength of cemented soil. When the fiber length is short, it is easy to be pulled out, and if the fiber length is too long, there is cluster phenomenon, which affects the enhancement effect of fiber on the tensile strength of cemented soil.


[1] BROMS B B.Lime and Lime/Cement Columns[C]//MOSELEY M P,KIRSCH K.The Proceedings of Ground Improvement.London:Spon Press,2004:252-330.
[2]NGUYEN B,TAKEYAMA T,KITAZUME M.Internal Failure of Deep Mixing Columns Reinforced by a Shallow Stabilized Soil Beneath an Embankment[J].International Journal of Geosynthetics & Ground Engineering,2016,2(4):1-13.
[3]KITAZUME M,TERASHI M.The Deep Mixing Method[M].Boca Raton:CRC Press,2013
[4]唐朝生,顾 凯.聚丙烯纤维和水泥加固软土的强度特性[J].土木工程学报,2011,44(增2):5-8.
TANG Chao-sheng,GU Kai.Strength Behaviour of Polypropylene Fiber Reinforced Cement Stabilized Soft Soil[J].China Civil Engineering Journal,2011,44(S2):5-8.
[5]GUTIERREZ-ORREGO D A,GARCIA-ARISTIZABAL E F,GOMEZ-BOTERO M A.Mechanical and Physical Properties of Soil-cement Blocks Reinforced with Mineral Wool and Sisal Fiber[J].Journal of Materials in Civil Engineering,2017,29(3):04016225.
[6]KUTANAEI S S,CHOOBBASTI A J.Experimental Study of Combined Effects of Fibers and Nanosilica on Mechanical Properties of Cemented Sand[J].Journal of Materials in Civil Engineering,2016,28(6):06016001.
[7]许 巍,刘军忠,张 俊.玻璃纤维加筋水泥土耐久性试验研究[J].铁道科学与工程学报,2021,18(1):104-111.
XU Wei,LIU Jun-zhong,ZHANG Jun.Experimental Study on Durability of Glass Fiber Reinforced Cemented Soil[J].Journal of Railway Science and Engineering,2021,18(1):104-111.
[8]黄 耕.PVA纤维水泥土力学性能的试验研究[D].太原:太原理工大学,2020.
HUANG Geng.Experimental Study on Mechanical Properties of Cemented Soil Reinforced by PVA Fiber[D].Taiyuan:Taiyuan University of Technology,2020.
[9]FIORE V,SCALICI T,DI BELLA G,et al.A Review on Basalt Fibre and Its Composites[J].Composites Part B Engineering,2015,74:74-94.
[10]TABELSI H,JAMEI M,GUIRAS H,et al.Some Investigations About the Tensile Strength and the Desiccation Process of Unsaturated Clay[J].European Physical Journal Conferences,2010,6:12005.
[11]DAVIES C.Evaluation of the ST Tensile Testing Equipment for Use on Cohesive Soils Using Digital Imaging Correlation Technology[D].Newcastle:Newcastle University,2012.
[12]CONSOLI N C,VENDRUSCOLO M A,FONINI A,et al.Fiber Reinforcement Effects on Sand Considering a Wide Cementation Range[J].Geotextiles & Geomembranes,2009,27(3):167-175.
[13]STIRLING R A,HUGHES P,DAVIE C T,et al.Tensile Behaviour of Unsaturated Compacted Clay Soils — A Direct Assessment Method[J].Applied Clay Science,2015,112-113:123-133.
[14]TOLLENAAR R N,VAN PAASSEN L A,JOMMI C.Experimental Evaluation of the Effects of Pull Rate on the Tensile Behavior of a Clay[J].Applied Clay Science,2017,144:131-140.
[15]CONSOLI N C,ARCARI BASSANI M A,FESTUGATO L.Effect of Fiber-reinforcement on the Strength of Cemented Soils[J].Geotextiles and Geomembranes,2010,28(4):344-351.
[16]LI J,TANG C S,WANG D Y,et al.Effect of Discrete Fiber Reinforcement on Soil Tensile Strength[J].Journal of Rock Mechanics and Geotechnical Engineering,2014,6(2):133-137.
[17]FESTUGOTO L,MENGER E,BENEZRA F,et al.Fibre-reinforced Cemented Soils Compressive and Tensile Strength Assessment as a Function of Filament Length[J].Geotextiles and Geomembranes,2017,45(1):77-82.
[18]陈 峰.玄武岩纤维水泥土抗拉性能试验研究[J].深圳大学学报:理工版,2016,33(2):188-193.
CHEN Feng.Experiment Research on Tensile Strength of Basalt Fiber Cement-soil[J].Journal of Shenzhen University:Science and Engineering,2016,33(2):188-193.
SU Hong-jun.Experimental Study on the Influencing Factors of Splitting Tensile Strength of Glass Fiber Cement Soil[J].Subgrade Engineering,2020(1):71-75,80.


Last Update: 2021-11-01