Informatics Publishing Limited

Md Ashraful Alam ¹, M. T. E. Amin ¹, Mohd Zamin Jumaat ², Zakaria Che Muda ¹

Affiliations
1 Department of Civil Engineering, Universiti Tenaga Nasional, Selangor, MY
2 Department of Civil Engineering, University of Malaya, MY

Abstract

The main aim of this article is to review the existing anchor systems and to propose new technique of end anchor to eliminate premature end peeling of plate bonded flexurally strengthened reinforced concrete beam. The proposed hybrid anchor system consists of connector and anchor plate. The connector and anchor plate of hybrid anchor system would resist the interfacial shear stress and normal stress respectively, thus, it could prevent the premature end peeling and reduce the size of the anchor plate significantly.

Keywords

Connector, CFRP Laminate, End Anchors, Flexural Strengthening, Plate End Debonding, Reinforced Concrete Beam, Steel Plate.

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Al-Mamon Yousef ¹, Zakaria Che Muda ¹, Sivakumar Naganathan ¹, Salmia Beddu ¹, Shojaeddin Jamali ¹

Affiliations
1 Department of Civil Engineering, Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000 Kajang, Selangor, MY

Abstract

Objectives: To investigate the post-tensioning behavior of the soil-cement interlocking bricks used in masonry wall subjected to out-of-plane loads. Methods/Statistical Analysis: Three types of wall specimen were tested with post-tensioned forces of 50% and 65% of maximum post-tension force. The wall specimens were tested horizontally after applying the post-tensioning force by applying two vertical point loads distributed equally along the wall. Findings: Results showed that service load and ultimate load for W1 are 6.2 KN and 9.5 KN respectively. The mentioned loads for W2 were 7 KN and 11.8 KN respectively. The maximum deflection occurred in W1 and W2 was 69 mm and 32 mm respectively. On the other hand, the service load and ultimate load for the post-tensioned wall with two tendons were found to be 14 KN and 20 KN respectively. The deflection in both cases was approximately same which it reaches up to 59mm. It can be concluded that post-tensioning level of interlocking bricks should be always from 60% to 65% in order to get optimum results for service ability and ultimate limit states. Application/Improvements: The post-tensioned wall developed using soil-cement interlocking blocks can be used in reinforced and post-tensioned masonry applications instead of conventional brick masonry. The post tensioning enhances the performance of brick masonry.

Keywords

Deflection, Masonry Wall, Post-Tensioning, Soil-Cement Interlocking Bricks, Ultimate Load

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