Long-term swelling characteristics of montmorillonite clay with and without fly ash: Wetting-drying cycle influence in 1d oedometer condition

Singh，Moirangthem Johnson1; Borana，Lalit1; Weiqiang，Feng2; Xu，Dong Sheng3

2021

10.1520/JTE20210248

JOURNAL OF TESTING AND EVALUATION   影响因子和分区

0090-3973

1945-7553

The utilization of fly ash (FA) produced from various thermal power plants and other industrial sources is a big challenge and an opportunity for material and civil engineers. This study aims to utilize FA for improving the engineering characteristics of Montmorillonitic Indian clay (BC) soil. A rigorous testing plan is designed and performed using different proportions of FA (5, 15, 25, and 35 %) to investigate the time-dependent deformation behavior of expansive BC soil and also to examine the influence of the wetting-drying cycle on the time-dependent swelling behavior of reconstituted soils in Oedometric free swell condition. It is proposed to evaluate the time-dependent parameters of the FA-BC matrix under wetting-drying cycles using the elastoviscoplastic considering swelling (EVPS)model. Themineralogical characteristics of both natural and reconstituted samples were investigated using the scanning electron microscope and X-ray diffraction. From the experimental result, it is observed that the time-dependent swelling coefficient decreases with the percentage of FA content increase. The FA used in the study results in decreasing not only the swelling potential of BC soil samples but also the swelling-shrinkage behavior of the soil. It is observed that the reconstituted soils are influenced by both the degree of FA content and the wetting-drying cycles. The swelling strain limit decreases exponentially with the increase of the FA content. The EVPS model works very well in predicting the long-term consolidation and swelling behavior of the FA-BC matrix under different stress states.

Fly ash Microstructure Swell coefficient Swelling-shrinkage Wetting-drying

EI ; SCI

英语

其他

Ministry of Micro, Small & Medium Enterprises, Republic of India[MSME CLCS-TUS- (5th PMAC) /SO38]

Materials Science

Materials Science, Characterization & Testing

WOS:000874099300001

AMER SOC TESTING MATERIALS

20213810919969

Drying ; Fly ash ; Scanning electron microscopy ; Soil mechanics ; Soils ; Strain ; Thermoelectric power plants ; Wetting

Soils and Soil Mechanics:483.1 ; Thermoelectric Energy:615.4 ; Materials Science:951

MATERIALS SCIENCE

2-s2.0-85115143581

Scopus

1.Discipline of Civil Engineering,Indian Institute of Technology Indore,Indore,Khandwa Rd., Simrol, Madhya Pradesh,452020,India
2.Department of Ocean Sciences and Engineering,The Southern University of Science and Technology,Shenzhen,1088 Xueyuan Ave.,518055,China
3.School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan Shi,1040 Heping Ave., Wuchang Qu, Hubei Sheng,430070,China

Singh，Moirangthem Johnson,Borana，Lalit,Weiqiang，Feng,et al. Long-term swelling characteristics of montmorillonite clay with and without fly ash: Wetting-drying cycle influence in 1d oedometer condition[J]. JOURNAL OF TESTING AND EVALUATION,2021,51(1).

Singh，Moirangthem Johnson,Borana，Lalit,Weiqiang，Feng,&Xu，Dong Sheng.(2021).Long-term swelling characteristics of montmorillonite clay with and without fly ash: Wetting-drying cycle influence in 1d oedometer condition.JOURNAL OF TESTING AND EVALUATION,51(1).

Singh，Moirangthem Johnson,et al."Long-term swelling characteristics of montmorillonite clay with and without fly ash: Wetting-drying cycle influence in 1d oedometer condition".JOURNAL OF TESTING AND EVALUATION 51.1(2021).