Sand Dune Research No. 48(3), pp.109-114 (2002)

Durability of Concrete Soaked in Drainage Water of Salt Accumulated Fields

Hidehiko OGATA*1, Shushi SATO*2, Sadahiro YAMAMOTO*2, Kyoichi OTSUKI*3, Hassan KHALED*2 and Kunio HATTORI*1

*1 Faculty of Agriculture, Tottori University
*2　United Graduate School of Agriculture, Tottori University
*3　Faculty of Agriculture, Kyushu University

Abstract

　Most drainage canals in arid or semi-arid countries where salinity is one of the biggest problems are unlined. In order to freely drain saline water and avoid secondary salinization, concrete-lined canals are needed. However, the concrete may probably deteriorate in the saline leachate. To investigate the possibility of the deterioration, the durability of concrete in saline water was experimentally examined. The experiment was conducted by soaking concrete specimens in artificial saline drainage water based on the water quality data of drainage water in the Hetao Irrigation Area of Inner Mongolia in China. The following results were obtained: concrete is slightly deteriorated by the leachate; the leachate affects the part of the concrete subjected to repeated wetting and drying, but not the soaked part of the concrete.