contributor author | Nancy Ampiah | |
contributor author | Amir Fam | |
contributor author | Ian D. Moore | |
date accessioned | 2017-05-08T21:55:16Z | |
date available | 2017-05-08T21:55:16Z | |
date copyright | December 2010 | |
date issued | 2010 | |
identifier other | %28asce%29mt%2E1943-5533%2E0000193.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/66507 | |
description abstract | This paper examines a cast-in-place composite polymer liner used in retrofitting cracked cast iron pressure water pipes. The installation of the liner can result in the formation of geometric imperfections (wrinkles) of different patterns and sizes if the external circumference of the liner exceeds the internal circumference of the host pipe. A series of split-disk tests were conducted on 25-mm wide ring samples of the polymer liner to examine the effects of the presence of three different wrinkle configurations, the loading rate, and cyclic loading on the circumferential strength of the liner. In all the test samples, cracking of the resin occurred at the wrinkle, but ultimate capacity was always greater than the cracking load. A reduction in the ultimate hoop strength of up to 23% occurred, depending on the wrinkle pattern. Cyclic loading corresponding to 50-year service life was applied, leading the resin in some samples to crack at the wrinkle. At a very slow loading rate of 0.1 mm/min, the ultimate strength of the liner was reduced by 16%. | |
publisher | American Society of Civil Engineers | |
title | Effect of Wrinkles on the Circumferential Strength of a Cast-in-Place Composite Polymer Liner Used in Retrofitting Pressure Pipes | |
type | Journal Paper | |
journal volume | 22 | |
journal issue | 12 | |
journal title | Journal of Materials in Civil Engineering | |
identifier doi | 10.1061/(ASCE)MT.1943-5533.0000160 | |
tree | Journal of Materials in Civil Engineering:;2010:;Volume ( 022 ):;issue: 012 | |
contenttype | Fulltext | |