Investigation of The Bond Behaviour Between Polyethylene ECC and Deformed Steel Rebar Under Various Load Conditions /
Linked Agent
Al-Toubat, Salah, degree co-., Thesis advisor
Maalej, Mohamed,, Thesis advisor
Date Issued
2023
Language
English
Thesis Type
Dissertations
Abstract
Engineered Cementitious Composites (ECC) are a special type of ultra-ductile fiberreinforced concrete that uses microfibers, and they are designed to exhibit superior mechanical and durability properties. ECC is becoming widely used in many applications because of their great properties. The bond strength of Polyethylene ECC was found to be not well investigated in literature under both monotonic loading and cyclic loading conditions. The bond between reinforcing bars and concrete is critical for guaranteeing consistent force transmission from the reinforcement to the surrounding concrete, and the breakdown of the structure might be caused by a loss of bond. The objective of this study is to investigate the bond strength properties of Polyethylene ECC with steel reinforcement and to evaluate the effect of embedment length, the loading rate, and the cover on bond strength. An experimental program has been developed to investigate the bond strength behavior under both monotonic and cyclic loading conditions. The beam-end test was selected for this experiment since it is a relatively simple test, yet it produces a realistic stress field. The results of the experimental program indicated that ECC failure mode is very ductile, with high slippages occurring and no bar rupture. Most ECC specimens experienced splitting-pullout failure when tested. The bond strength of ECC was evaluated and the effect of various parameters was determined. It was found that an increase in the load rate, cover, and anchorage length led to an increase in the bond strength. Moreover, the mixture composition was found to have a significant impact on the resulting bond strength. Under cyclic loading, ECC was found to perform exceptionally well, displaying increased peak loads and higher energy absorption. Finally, recommendations for future research were made and the limitations of the present study were discussed.
Note
A Dissertation Submitted in Partial Fulfilment of the Requirements for Master of Science in Civil Engineering, University of Sharjah Sharjah, UAE.
Category
Disseration
Library of Congress Classification
TA682.4 .T373 2023
Local Identifier
b16391676