Model tests on thermo-mechanical behavior of an improved energy pile

Liu, Han long; Wang, Cheng Long; Kong, Gangqiang; Ng, Charles Wang Wai; Che, Ping

doi:10.1080/19648189.2016.1248792

Cited by 16 publications

(1 citation statement)

References 26 publications

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“…This technology uses a heat pump and a closed-loop heat exchanger buried underground to transfer thermal energy between the ground and an overlying structure. On this basis, a series of energy geo-structures have been successfully designed to operate within the very shallow part of the ground in many countries, such as Europe [1], Australia [2], UK [3], United States [4,5] and China [6,7]. There are a range of energy geo-structures proposed in the literature, including energy piles [1,3,6,[9][10][11], energy retaining walls [8], energy tunnel linings [12], energy embankments [13] and energy pavements for highways [14,15].…”

Section: Introductionmentioning

confidence: 99%

Thermal volume changes of saturated sand during loading-unloading-heating phase

2020

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The influence of temperature on the volume change of loose, saturated sand was assessed through a series of temperature-controlled hollow-cylinder triaxial tests. The sand specimens were isotropically compressed and unloaded to induce an overconsolidation effect, then subjected to drained heating. During drained heating, water was expelled from the sand specimens and the thermally-induced axial and volumetric strains were negative, reflecting isotropic expansion.

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