Geosynthentic clay liners (GCL) have great application value in canal lining projects. In order to estimate the effects of aging factors on the mechanical properties of GCL as canal lining materials, a series of laboratory simulation and field experiments in Inner Mongolian Hetao irrigation
district were conducted to test effects of the five aging factors on the mechanical indexes of three kinds of GCL. The results indicated that temperature, humidity and ultraviolet radiation had some effects on the mechanical properties of GCL. The effects of high temperature on mechanical
properties of GCL were more significant than those of low temperature, and the effects of high-low temperature cycling were weaker than effects of high or low temperature separately. Three kinds of mechanical properties of GCL samples was decreased by 34.27%, 35.77%, 45.02% after high temperature
(60) aging 72 h and 19.51%, 31.49%, 18.40% after low temperature(40) aging 72 h, 19.32%, 32.62% and 38.28% after high-low temperature cycling(40 for 12h and 60 for 12h ) 10 times and 29.08%, 18.31% and 36.17% after Ultraviolet radiation 1200 h, respectively. The mechanical properties of 2
# and 3 # decreased by 12.41%, 13.08%, but 1# has no change with GCL moisture content from 50% to 100% after high temperature (60) aging 24 h. GCL in field aged faster in the first year, and the mechanical properties of the three samples decreased by 12.1%, 18.5% and 17.8% respectively while
mechanical properties varied mitigatively after one year. This research can provide references for the application of GCL as canal lining materials.
No References for this article.
No Supplementary Data.
No Article Media
No Metrics
Keywords:
aging factors;
canal linings;
geosynthentic clay liners;
mechanical properties;
stress measurements
Document Type: Research Article
Publication date:
01 November 2011
More about this publication?
Transations of the Chinese Society of Agricultural Engineering(TCSAE), founded in 1985, is sponsored by the Chinese Chemical Society. TCSAE has been indexed by EI Compendex, CAB Inti, CSA. TCSAE is devoted to reporting the academic developments of Agricultural Engineering mainly in China and some developments from abroad. The primary topics that we consider are the following: comprehensive research, agricultural equipment and mechanization, soil and water engineering, agricultural information and electrical technologies, agricultural bioenvironmental and energy engineering, land consolidation and rehabilitation engineering, agricultural produce processing engineering.
- Editorial Board
- Ingenta Connect is not responsible for the content or availability of external websites