| Geosynthetics are widely used in waterproofing and drainage systems of highway. It is able good to meet different engineering requirements, and also beneficial to effectively using material resources and making lesser cost for any more efficiency, to efficiently exert geosynthetics.After extensive investigations on the types of civil geosynthetics products, properties, test methods, and use performances, this article have concluded the changing ranges of products properties and testing methods. The existing problems have also been analyzed. Through the investigations about testing methods of hydraulic properties of geosynthetics and research conclusions, the laboratory test has been elaborately designed to get the valid test data. Physical and hydraulic properties have been tested under several experiment conditions. Clogging tests about geotextile clogging characteristics and its influence factors have been arranged by the orthogonal table L9 (33). A lot of indoor experiments help to find the good relationships between coefficient of permeability and other characteristics.The type characteristics and its testing method of geosynthetics were preliminarily developed in this paper. |
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