Results 31 to 40 of about 571 (207)
A Generalized Secondary Frost Heave Model
A generalized model for secondary frost heave is developed. Secondary frost heave arises during freezing owing to cryostatic suction effects that can increase the upward water permeation to facilitate ice-lens growth and increased heave. Nondimensionalization and scaling are used to simplify the model equations and to identify a dimensionless group ...
Fowler, A, Krantz, W
openaire +3 more sources
Antifreeze design, scientific operation, and maintenance of tunnels with broken surrounding rock in seasonal frozen areas are key factors that affect the safety of tunnel.
Cui Guangyao, Xiong Yong
doaj +1 more source
The frost heaving pressure is induced by water-ice phase transition in water-bearing cracks in addition to thermal stress at low temperature in rock engineering in cold regions.
HUANG Shi-bing 1,2, LIU Quan-sheng 3, LIU Yan-zhang 1, CHENG Ai-ping 1
doaj +1 more source
Experimental study on water transfer of soil-rock mixtures under freezing action
The frost-heaving failure of earth-rock dam slopes is mainly caused by the combined action of sand and gravel cushion, frost heaving of dam fills and water migration.
LI Zhuo 1, 2, JIANG Xin 3, ZHANG Jixun 3, ZHAO Yu 3, WANG Yuqing 3, LU Yang 3
doaj +1 more source
Gravel soil is usually considered to be insensitive to frost heave. However, many frost heave deformations of foundation in seasonal frozen region indicate that gravel soil may also produce frost heave under certain special conditions. In order to gain a
Xiaoyong Long +3 more
doaj +1 more source
Predicting the frost heaving of bottom ash value for road design
Introduction. Most of the researchers dealing with the use of ash and slag materials (especially in the construction) have focused on the study of their mechanical characteristics or assessment of their impact on the environment.
A. A. Lunev +3 more
doaj +1 more source
Frost heaving of foundation pit for seasonal permafrost areas
Frost heaving can cause support structures to crack and even instability of the foundation pit. This paper describes the frost heaving features of the steel pile pre-stressed tendon composite foundation pit support system (SPPTCFPSS). As a combined rigid–
Guo Chao, Zhengran Lu
doaj +1 more source
The Manzhouli 500 kV electrical transmission line travels more than 218 km through seasonal frozen regions, which result in many freezing soil engineering problems with respect to the transmission tower foundations.
Liang Tang +3 more
doaj +1 more source
Secondary Frost Heave in Freezing Soils [PDF]
Summary: A mathematical model of secondary frost heave in freezing, gravelly soils is presented. This model is due to \textit{K. O'Neill} and \textit{R. D. Miller} [Water. Resour. Res., 21, 281-296 (1985)], who sought numerical solutions. Here, their model is made nondimensional and is analyzed using asymptotic analysis.
openaire +2 more sources
Frost heave of soils involves complex coupled interactions among moisture, heat, and stress, which can cause serious damage to cold regions engineering. In this paper, a series of one-directional freezing experiments were implemented for the Tibetan clay
Pengfei He +4 more
doaj +1 more source

