Influence of Lateral Limited Uniaxial Tensile Strain on Opening Sizes

Abstract

Nonwoven geotextiles are widely used for seepage prevention, foundation improvement and reinforcement materials. They are usually under lateral limited uniaxial tension in engineering, which results in changing behaviour of the opening size of geotextiles. According to theoretical analysis of pore parameters people studied before, the equivalent pore size of nonwoven geotextiles under the lateral limited uniaxial tensile strain are derived in this paper. Two different nonwoven geotextiles were stretched under lateral limited uniaxial tensile strain of 3%, 5% and10% respectively. Dry sieving tests were exerted in order to eliminated electrostatic effects and measure the change of pore size of nonwoven geotextiles. The results show that theoretical solutions are good for predicting the change law of pore sizes for non-woven geotextiles. Pore size of nonwoven geotextiles increases with increasing of the lateral limited uniaxial tensile strain.