Use of precast concrete slabs and bricks for lining irrigation canals

الملخص EN

Canal lining is a method of augmenting water quantity.

The paper stressed this aspect by focusing on the use of local materials for concrete lining.

Rawakeeb Research Station (RRS) experienced high water losses due to seepage.

A concrete canal-let form (consist of two parts) was fabricated of 0.9 mm sheet metal to produce precast concrete canal-lets for lining of RRS canal.

During precasting three problems occurred and resulted in failure of the form.

A concrete slab form was well designed to avoid problems encountered by the first form.

In order to develop jointing system, the precast concrete slabs were provided with acute angle of 45o clockwise along the width of the slab when laid horizontally.

The developed jointing system, precasting technique and construction technique provided the required water tightness.

KEY WORDS: Seepage, Canal lining, water losses, precasting, concrete canal-lets, jointing system