Development of Wetting-Drying Curves from Elastic Wave Velocities Using a Novel Triaxial Test Apparatus

• Autorzy: Irfan Muhammad , Rasool Ali Murtaza , Aziz Mubashir , Ali Umair , Niazi Fawad , Uchimura Taro

Identyfikatory

DOI

10.2478/sgem-2024-0006

• Języki publikacji: EN

Abstrakty

EN

The relationship between the soil water characteristic curve (SWCC) and the mechanical behavior of unsaturated soil is imperative and has been well investigated. However, the correlation between elastic wave velocity along the wetting and drying paths of SWCC is largely unknown due to the nonavailability of a standard experimental setup for such a purpose. An ordinary triaxial apparatus has been modified for laboratory assessment of SWCCs under different Ko stresses, along with the measurement of shear and compression wave velocities in due course. The main aim of the study is to draw SWCC, wave velocity characteristic curve (WVCC), and a Poisson’s ratio characteristic curve (PRCC) and to establish the phenomenon that these curves possess hysteresis. The Poisson’s ratio was obtained indirectly by measuring Vp and Vs. Three soil samples with relative densities of 85%, 56%, and 39% were prepared and placed in a modified triaxial test apparatus under wetting and drying cycles. The test results showed that the newly developed apparatus is accurately capable of measuring SWCC. Owing to the similarity in the shape of wave velocity and Poisson’s ratio, response to SWCC, WVCC, and PRCC are drawn. The phenomenon of stress history and the effective stress of the soil affected the behavior during wetting and drying paths.

Słowa kluczowe

EN

triaxial test; soil water characteristic curve; wave velocity characteristic curve; Poisson’s ratio characteristic curve; elastic wave velocity

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2024
• Tom: Vol. 46, nr 2
• Strony: 111--124
• Opis fizyczny: Bibliogr. 46 poz., rys.

Twórcy

autor

Irfan Muhammad

• Birudo Engineers Lahore, Pakistan

autor

Rasool Ali Murtaza

• National Engineering Services Pakistan (NESPAK) Lahore, Pakistan

autor

Aziz Mubashir

• Department of Civil & Environmental Engineering, King Fahd University of Petroleum & Minerals, Interdisciplinary Research Center for Construction & Building Materials, King Fahd University of Petroleum & Minerals Dhahran,Dhahran

autor

Ali Umair

• Department of Civil & Environmental Engineering, King Fahd University of Petroleum & Minerals, Interdisciplinary Research Center for Construction & Building Materials, King Fahd University of Petroleum & Minerals Dhahran,Dhahran

autor

Niazi Fawad

• Department of Civil and Mechanical Engineering, Purdue University Fort Wayne USA

autor

Uchimura Taro

• Graduate School of Science and Engineering, Saitama University Saitama, Japan

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