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ABSTRACT
The paper presents the bearing ratio behavior of sand overlying silty sandy with two woven and two non-woven treated coir geotextiles at the interface under unsoaked and soaked condition. The chemicals such as sodium hydroxide and potassium permanganate were used to treat the coir geotextiles. The coir geotextiles were placed at two different locations (Designated as Series A and Series B). The results indicated that the bearing ratio of the sand overlying silty sand with untreated/ treated woven/non-woven coir geotextiles at the interface was higher in the unsoaked condition in comparison to soaked condition for the Series A and Series B. The improvement in the bearing ratio of the sand overlying silty sand with untreated/ treated woven/non-woven coir geotextiles at the interface in the unsoaked/soaked condition was higher for the Series A in comparison to the Series B. The bearing ratio of the sand overlying silty sand increased when the woven/non-woven coir geotextiles at the interface were treated with sodium hydroxide. The improvement in the bearing ratio of the sand overlying silty sand with potassium permanganate treated woven/non-woven coir geotextiles at the interface was higher in comparison to the sodium hydroxide treated woven/non-woven coir geotextiles. The highest improvement in the bearing ratio was achieved when both the woven/non-woven coir geotextiles were treated with sodium hydroxide followed by potassium permanganate.
摘要
本文介绍了在未浸水和未浸水条件下，粉砂与两种经编织和两种无纺布处理的椰壳土工布在界面上的承载比特性. 用氢氧化钠、高锰酸钾等化学物质处理椰壳纤维土工布. 将椰壳纤维土工布放置在两个不同的位置（指定为A系列和B系列）. 结果表明，与A系列和B系列浸水条件相比，未浸水条件下，界面处含未处理/处理编织/无纺布椰壳土工布的粉砂上覆砂的承载比更高. 与B系列相比，A系列粉砂与未经处理/处理的编织/无纺布椰壳纤维土工布在界面处的承载比提高更高. 用氢氧化钠处理界面编织/无纺布椰壳土工布时，粉砂上覆砂的承载比增大. 与氢氧化钠处理的编织/非编织椰壳纤维土工布相比，在界面处的砂覆盖粉砂与高锰酸钾处理的编织/非编织椰壳土工布的承载比的改善更高. 织物/无纺布的椰壳纤维土工布经氢氧化钠处理后，再经高锰酸钾处理，承载比得到最大改善.