Development Length of Prestressing Strands in Post-Tensioning Slabs

Abstract: One of the structural systems that are widely used nowadays is post tensioning concrete slabs with special shaped dead end (H-anchorage dead end). The special shaped dead end is formed by using a certain hydraulic jack that enables the shaping of an easy shaped and economic dead end. This paper presents an experimental work to assess the development length of 15 mm (0.6 in) diameter prestressing strand with special shaped dead in concrete slabs with 48 MPa concrete compressive strength. The experimental program included three specimens with 750 mm, 900 mm and 1050 mm length with constant specimen width and thickness 300 mm and 200 mm respectively. From the experimental test results and the analyzed data it was concluded that the development length of the prestressing strand in post-tensioning concrete slabs equal 1000 mm is sufficient to reach the strand ultimate strength. Keywords: Development length, special shaped dead end, Prestressing strands, Post-tensioning slabs. Title: Development Length of Prestressing Strands in Post-Tensioning Slabs Author: Jehan H. Aly, A. Farghal Maree, Mohamed Kohail, Ayman H. Khalil International Journal of Civil and Structural Engineering Research ISSN 2348-7607 (Online) Vol. 10, Issue 2, October 2022 - March 2023 Page No: 115-120 Research Publish Journals Website: www.researchpublish.com Published Date: 28-March-2023 DOI: https://doi.org/10.5281/zenodo.7777266 Paper Download Link (Source) https://www.researchpublish.com/papers/development-length-of-prestressing-strands-in-post-tensioning-slabsInternational Journal of Civil and Structural Engineering Research, ISSN 2348-7607 (Online), Research Publish Journals, Website: www.researchpublish.co