The effects of surface area to volume ratio on the water absorption rate of solid buoyancy materials

doi:10.19936/j.cnki.2096-8000.20231028.005

Abstract

Abstract: The water absorption rate of solid buoyancy materials under a certain hydrostatic pressure varies with their sizes and shapes. The surface area to volume ratio is one of the major factors that affect the water absorption rate. In order to study this relationship, solid buoyancy material samples of various area to volume ratios were prepared and tested under hydrostatic pressures of 10 MPa and 20 MPa for up to 30 days. The cumulative water absorption rates of the samples are found to increase with the area to volume ratio. A kinetics formula describing the propagation of water in solid buoyancy materials is developed based on Fick’s Law. A linear relationship between the wa-ter absorption rate and a composite parameter (S/V)t has been derived and verified by comparing with the meas-ured data. The findings indicate that the water absorption rate of solid buoyancy materials is proportional to its area to volume ratio under the same hydrostatic pressure and for the same period of time, which offers a meaningful guidance to the engineering design and analysis of such materials.

Key words: solid buoyancy materials, water absorption rate, surface area to volume ratio, hydrostatic pressure, composites

CLC Number:

TB332

LIN Shouqiang, YANG Zhuan, LIU Gang, HUANG Hui, CHEN Miaomou, HUANG Xin, Chen Dajiang, HAO Jing. The effects of surface area to volume ratio on the water absorption rate of solid buoyancy materials[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(10): 32-36.

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