Abstract
Mechanical deicing is a method to remove the ice on the pavement surface, and the ice strength directly affects the difficulty and effectiveness of the mechanical deicing. This paper aims to investigate the compression strength of ice to facilitate the deicing equipment to crush ice. In this paper, a large-scale freezing laboratory is employed to simulate low temperature environment, and the uniaxial unconfined compressive tests of artificial fresh-water ice under different temperature conditions are carried out through the uniaxial loading system. The compressive strength and modulus of ice are obtained when the substrate is asphalt pavement. The test result shows that the ice compressive strength and modulus respectively distribute from 0.36 MPa to 3.67 MPa and 11.7 MPa to 359.1 MPa when ice temperature varies from -0.7℃ to -7.5℃. The relations between ice temperature and compressive strength are approximately in linear manner, while the relation of compressive modulus and ice temperature shows good power function and exponential relationships respectively when ice temperature ranges from -8℃ to -5℃ and from -5℃ to 0℃. Furthermore, the failure mechanism of ice under relatively lower temperature is due to the development of cut-through cracks inside the ice. The failure mode divides into shear failure and ductile failure and the failure ice is mainly composed of large ice strips and bulks. For the ice with relatively higher temperature especially the ice close to melting point temperature, the ice failure mode is compressive and ductile, and the failure ice is mainly composed of granular ice crystals.
Highlights
The ice formed on the surface of civil structures exerts adverse impacts on the engineering construction and its normal use (Hanbali, 1994; Dan et al, 2019a,b)
We mainly focus on the study on the ice compressive strength and modulus for various ice temperatures when the substrate is asphalt pavement
The force can crush the ice on the one hand and not damage the pavement on the other hand
Summary
The ice formed on the surface of civil structures exerts adverse impacts on the engineering construction and its normal use (Hanbali, 1994; Dan et al, 2019a,b). We mainly focus on the study on the ice compressive strength and modulus for various ice temperatures when the substrate is asphalt pavement. The Marshall specimen (compacted and molded asphalt mixture) is a substrate with rough surface on which the ice is formed under a low-temperature environment in order to ensure the ice specimen cannot move during the compression process. The experimental model of pavement is filled with building materials (asphalt mixture), and it is constructed in the freezing laboratory and subjected to low temperature and wet conditions. The compressive strength under the unconfined condition is tested for the purpose of estimating the failure load of the Marshall specimen.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
