Print Email Facebook Twitter Effect Of Interface Treatment On The Cracking Behaviour Of Hybrid SHCC (Strain Hardening Cementitious Composite) Concrete Beams Title Effect Of Interface Treatment On The Cracking Behaviour Of Hybrid SHCC (Strain Hardening Cementitious Composite) Concrete Beams Author Mustafa, S. (TU Delft Concrete Structures) Singh, S. (Student TU Delft) Lukovic, M. (TU Delft Concrete Structures) Contributor Zhao, Bin (editor) Lu, Xilin (editor) Date 2020 Abstract Strain Hardening Cementitious Composite (SHCC) is applied on the tension side of a flexural member in order to improve crack-width control of reinforced concrete and its effectiveness is investigated for varying treatment of the interface between SHCC and concrete. A four-point bending test configuration is used and the interface is varied locally within the constant bending moment region as smooth, partially debonded, completely debonded and profiled surface. The aim is to investigate the influence of interface on the cracking behaviour and the development of maximum crack-width in the hybrid SHCC beams with varying interface profile. Therefore, all the beams are designed to have a similar load carrying capacity by providing mechanical anchorage through the interface outside the constant bending moment region using stirrups. The cracking behaviour is analysed by measuring the maximum crack-width in SHCC layer using Digital Image Corelation (DIC), Linear Variable Differential Transformers (LVDTs) and visual inspection with a microscope. The effectiveness of the interface treatment is then judged by comparing the load at which the maximum crack-width in SHCC layer exceeds 0.3 mm, corresponding to the maximum allowable crack-width for most structural applications. It is observed that the relatively stronger interfaces (smooth and profiled) show better crack-width control when compared to partially debonded and completely debonded (weak) interfaces, probably because with weaker interface the hybrid action of the beam is reduced resulting in higher stresses and early crack localization in SHCC. Subject Hybrid Reinforced Concrete BeamsInterfaceSHCC To reference this document use: http://resolver.tudelft.nl/uuid:9e95f222-e838-4f35-992a-9956b82f9323 Publisher Internation Federation for Structural Concrete (fib), Shanghai, China Embargo date 2021-05-24 ISBN 9782940643042 Source Fib Symposium 2020: Concrete Structures for Resilient Society Event fib Symposium 2020, 2020-11-22 → 2020-11-24, Online due to COVID-19, Shanghai, China Series fib Symposium Proceedings, 2617-4820 Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type conference paper Rights © 2020 S. Mustafa, S. Singh, M. Lukovic Files PDF P0667.pdf 842.37 KB Close viewer /islandora/object/uuid:9e95f222-e838-4f35-992a-9956b82f9323/datastream/OBJ/view