DOI: 10.5194/tc-15-2957-2021
论文题名: The flexural strength of bonded ice
作者: Murdza A. ; Polojärvi A. ; Schulson E.M. ; Renshaw C.E.
刊名: Cryosphere
ISSN: 19940416
出版年: 2021
卷: 15, 期: 6 起始页码: 2957
结束页码: 2967
语种: 英语
英文摘要: The flexural strength of ice surfaces bonded by freezing, termed freeze bond, was studied by performing four-point bending tests of bonded freshwater S2 columnar-grained ice samples in the laboratory. The samples were prepared by milling the surfaces of two ice pieces, wetting two of the surfaces with water of varying salinity, bringing these surfaces together, and then letting them freeze under a compressive stress of about 4gkPa. The salinity of the water used for wetting the surfaces to generate the bond varied from 0 to 35gppt (parts per thousand). Freezing occurred in air under temperatures varying from -25 to -3gg C over periods that varied from 0.5 to g1/4g100gh. Results show that an increase in bond salinity or temperature leads to a decrease in bond strength. The trend for the bond strength as a function of salinity is similar to that presented in Timco and O'Brien (1994) for saline ice. No freezing occurs at -3gg C once the salinity of the water used to generate the bond exceeds g1/4g25gppt. The strength of the saline ice bonds levels off (i.e., saturates) within 6-12gh of freezing; bonds formed from freshwater reach strengths that are comparable or higher than that of the parent material in less than 0.5gh. © Author(s) 2021. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164767
Appears in Collections: 气候变化与战略
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作者单位: Thayer School of Engineering, Dartmouth College, Hanover, NH, United States; Department of Mechanical Engineering, School of Engineering, Aalto University, P.O. Box 14100, Aalto, Espoo, 00076, Finland; Department of Earth Sciences, Dartmouth College, Hanover, NH, United States
Recommended Citation:
Murdza A.,Polojärvi A.,Schulson E.M.,et al. The flexural strength of bonded ice[J]. Cryosphere,2021-01-01,15(6)