An investigation into the effects of lime on compressive and shear strength characteristics of fiber-reinforced clays

作     者：Mahmood Reza Abdi Abbas Ghalandarzadeh Leila Shafiei Chafi Mahmood Reza Abdi;Abbas Ghalandarzadeh;Leila Shafiei Chaff

作者机构：Faculty of Civil EngineeringK.N.Toosi University of TechnologyTehranIran School of EngineeringTehran UniversityTehranIran 

出 版 物：《Journal of Rock Mechanics and Geotechnical Engineering》 (岩石力学与岩土工程学报（英文版）)

年 卷 期：2021年第13卷第4期

页      面：885-898页

核心收录：

学科分类：081401[工学-岩土工程] 08[工学] 0814[工学-土木工程] 

主　　题：Kaolinite Lime Polypropylene(PP) Fiber-reinforced clay Triaxial compression test(TCT) Uniaxial compression test(UCT) Scanning electron microscopy(SEM) 

摘      要：To meet the ever-increasing construction demands around the world during recent years,reinforcement and stabilization methods have been widely used by geotechnical engineers to improve the performances and behavior of fine-grained *** lime stabilization increases the compressive strength of soils,it reduces the soil ductility at the same *** research shows that random fiber inclusion modifies the brittleness of *** the current research,the effects of lime and polypropylene(PP)fiber additions on such characteristics as compressive and shear strengths,failure strain,secant modulus of elasticity(E50)and shear strength parameters of mixtures were *** was treated with 1%,3% and 5% lime by dry weight of soil and reinforced with 0.1% monovalent PP fibers with the length of 6 *** were prepared at optimum conditions and cured at 35℃ for 1 d,7 d and 28 d at 90% relative humidity and subsequently subjected to uniaxial and triaxial compression tests(UCT and TCT)under cell pressures of 25 kPa,50 kPa and 100 *** showed that inclusion of random PP fibers to clay-lime mixtures increases both compressive and shear strengths as well as the *** content and curing period were found to be the most influential *** electron microscopy(SEM)analysis showed that lime addition and the formation of cementitious compounds bind soil particles and increase soil/fiber interactions at interface,leading to enhanced shear *** more ductile the stabilized and reinforced composition,the less the cracks in roads and waste landfill covers.