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Journal articles on the topic 'Post-tensioned flat slab'

Author: Grafiati

Published: 5 June 2025

Last updated: 16 July 2025

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1

Ahmad, Omar. "Financial comparative study between post-tensioned and reinforced concrete flat slab." International Journal of Advanced Engineering, Sciences and Applications 3, no. 1 (2022): 1–6. http://dx.doi.org/10.47346/ijaesa.v3i1.67.

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As for today, post-tensioned slabs gained much popularity and started to be widely used among construction companies all around the world. As we refer to the structural members, we acknowledge that the price of the slab is much higher in comparison to the other structural members like columns, beams, or foundation in accordance to the amount of steel and concrete in it. A comparative study has been done between post-tensioned, and reinforced concrete flat slab to compare how much each slab cost. It describes that since the post-tension slabs are thinner and it provides fewer columns, so the amount of concrete required is less than the required amount in a flat slab. Special steel tendons that are used in post-tensioned slabs will be stretched by a hydraulic jack after the casting of concrete, and these tendons have an effect in reducing the reinforcement steel bars. Although tendons are used only in post-tension slabs, the amount of steel used in it is less compared to flat slabs. Furthermore, the contractor work cost differs from doing the post-tensioned slab and flat slab. The study had been done by comparing the amount of concrete, steel and contractor work cost. The results obtained from the comparative study between post-tension slabs and reinforcement concrete flat slabs indicate that post-tensioned slabs are cheaper.

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2

Zamrawi, Amal, Ata El-Kareim Shoeib, Angelos Abdo, and Samir M. Ahmed. "Experimental work of effect of openings on the post-tensioned flat slab." Frattura ed Integrità Strutturale 18, no. 67 (2023): 292–310. http://dx.doi.org/10.3221/igf-esis.67.21.

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This study aims to evaluate the effect of various parameters on the behavior of the reinforced concrete flat slabs and the contribution of each design element in the punching shear strength. This research presents experimental results of tested post-tensioned flat slabs with opening under concentric compressive load. The developed post-tensioned flat slabs are to ensure adequate punching shear strength capacity. The experimental work consisted of eight specimens of post-tensioned reinforced concrete flat slabs which classified into groups. All slabs had the same dimension and reinforcement. The slabs had dimensions with a 1750 mm length and 1750 mm width, to study the behavior of post-tensioned flat slab with/out openings under the concentrated load and punching influence.

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3

Satwika, Vanteddu, and Mohit Jaiswal. "Comparison of RCC and Post-Tensioned Flat Slabs Using ETABS." IOP Conference Series: Earth and Environmental Science 982, no. 1 (2022): 012084. http://dx.doi.org/10.1088/1755-1315/982/1/012084.

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Abstract Flat slabs are widely used nowadays. The system’s insufficient punching shear capacity is a major and serious flaw. There are numerous approaches to increasing the punching shear strength of concrete slabs to solve the problem of punching failure. Increasing the thickness of the slab adjacent to the column, as well as the thickness of the column, contradicts the architectural intent. In developing countries such as India, the benefits of prestressing, particularly post-tensioning, have yet to be recognized. In this study, the technique of post-tensioning is used to strengthen a flat slab. RCC flat slabs are compared to post-tensioned flab slabs with different tendon profiles. Tendons are available in two forms: distributed and banded. The models were built as per ACI 318-14. These slab models were created using ETABS software, and the following parameters were compared: thickness, supporting reactions, punching shear, and deflection. When compared to traditional flat slabs. The results indicate that post-tensioned flat slabs have a higher punching shear capacity even at shallower depths, resulting in more cost-effective sections. The provision of tendons also results in lower deflection.

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Deep Gopal Rathod and Dr. Ajay radke. "A Review paper on seismic response of various slab systems with and without lateral load resisting systems." International Research Journal on Advanced Engineering Hub (IRJAEH) 2, no. 03 (2024): 551–54. http://dx.doi.org/10.47392/irjaeh.2024.0079.

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With the ongoing modern trends of the construction industry, slab systems like flat slab and post tensioned slabs are widely used in the construction. Flat and post tensioned slab are widely favored by architects and clients for aesthetic reasons. They also do possess a huge advantage structurally over conventional slab arrangement such as Less depth of the slab is required , increasing the floor-to-floor height , longer spans are possible , no beam projections , reduced self-weight of the building and many more. But it comes with its own disadvantages as well such as Brittle punching (shear) failure. Which requires additional reinforcement along the connections of column and slab. Which increases the longitudinal steel required. Slab – column connections are the first point of yielding in higher seismic zones with buildings without lateral load resisting system (LLRS). In higher seismic zones the slabs can resist only the gravity loads and can’t resist the lateral dynamic loading and hence may require additional lateral load resisting system (LLRS) to resist lateral loads such as seismic and wind loads. Thus it becomes essential to study the seismic behavior of conventional slab , flat slab and post tensioned slab systems in high rise RCC structure with and without various LLRS ( lateral load resisting system).This study is aimed to study various literatures related to effects of lateral loads on flat and post tensioned slab system and different LLRS (lateral load resisting system) to make the structure more resistant and economical against such lateral loads considering parameters like story displacement , base shear , stiffness of the connections and time period.

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5

Ahirwar, Manoj Kumar, and Murlidhar Chourasia. "Analysis of Post-Tensioned Flat Slabs, Conventional Slabs, and Flat Slabs using Etabs Software." International Journal for Research in Applied Science and Engineering Technology 13, no. 3 (2025): 1618–23. https://doi.org/10.22214/ijraset.2025.67512.

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Abstract: The modern-day submit-tensioning method is especially well-known because of its practicality; so, we will design the maximum safe and economical construction using this method. Every time we are planning the application of this technique, we must include more protective measures for slabs' shear and deflection criteria. The rewards of submit stressing and especially of submit-tensioning are only to be acknowledged in any growing united state of America like our u.s.a. India. An enterprise is created to review the charge viability, durability, first-rate, maintainability of set up-Tensioned diploma piece frames as for builtup stage bite framework inside the examination. The reason for this new exam paper is improvement innovation problems in India and discovery of relevant causes, seriousness, affects to cover changes. Exploration must pave the way for improvement project strategy changes and reduce social and hierarchical adjustments in companies to boost advantage, care for warriors, and manipulate project to limit value and timetable crush. Classic slab, flat slab, and publish-tensioned flat slab comparisons are the topic of this thesis. In these studies, traditional slab, flat slab, and post-tensioned flat slab for G+10 storey structure with unique span length were compared. This slab was analyzed and designed using ETABS

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6

Elsheshtawy, Sarah S., Ata K. Shoeib, Amal Hassanin, and Dina M. Ors. "Influence of the Distribution and Level of Post-Tensioning Force on the Punching Shear of Flat Slabs." Designs 7, no. 1 (2022): 1. http://dx.doi.org/10.3390/designs7010001.

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Punching shear is the most common failure mechanism of slabs that are supported directly on columns. The slab–column connection is always vulnerable to critical punching shear; thus, it is necessary to investigate the effect of various parameters on the punching shear behavior of the flat slabs. This work presents an experimental study to evaluate the effect of the level of prestressing force and layout of the strands on the punching shear behavior of the slab–column connection in terms of the maximum load, deflection, stiffness, ductility, and the absorbed energy. Five square post-tension flat slabs (2000 mm × 2000 mm) with 150 mm thickness were tested. Increasing the prestressing force increased the maximum load and the ductility with a delay in damage in the case of uniformly distributed strands. Additionally, the banded layout of the post-tensioning strands significantly increased the punching shear capacity of the post-tensioned flat slabs at all levels of prestressing. The influence of the layout of the strands on the flat slab ductility is clearly visible in cases of high prestressing force as the ductility decreases in cases with distributed strands when compared to the same flat slabs with banded strands. Finally, the predicted values of the ultimate load of the punching shear using different codes, including the Egyptian Code of Practice (ECP-203), the American Building code (ACI-318), the CEB-FIP Model code and the Euro code, are compared to the experimental values of the ultimate punching shear strength of the post-tensioned and non-post-tensioned flat slabs.

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7

K, Hridya. "Effect of Location of Shear wall on Torsional Performance of Symmetric and Asymmetric High Rise Building." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (2021): 5237–43. http://dx.doi.org/10.22214/ijraset.2021.36160.

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Torsion force is a load that is a applied to a building through torque. The torque applied creates a shear stress. If a torsion force is large enough, it can cause a building to undergo a twisting action. The main aim of the project is to study the effect of location of shear wall on torsional performance of symmetric and asymmetric high-rise building ,post tensioned slabs are being used in the construction of building hence the thesis also analyze these post tensioned slab structures by changing shear wall configuration. Post tensioned slab structures have weak resistance to lateral loads. so to provide stiffness to structures against lateral forces shear walls are used. A study of 30 storey building in zone III, is considered and determine various parameters like base shear, storey drift, and storey displacement.post-tensioning is a mature technology as it provide efficient, economic and elegant structural solutions for a wide range of applications. Post-tensioned flat slab could be a better option compared to RCC flat slab, in respect of the cost of project and time of construction. ETABS 2017 software is used for the analysis.

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8

Omnia, S. Ismail, H. H. Khalil Ayman, and El-Kateb Mahmoud. "Punching Behavior of Unbonded Post Tensioned flat slab." International Journal of Computer Science and Information Technology Research 12, no. 2 (2024): 6–12. https://doi.org/10.5281/zenodo.11109050.

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<strong>Abstract:</strong> Further improvements are needed in building technology to save time and resources. Nowadays, principal and public buildings are designed as long-span structures. The prestressed concrete system has proven to be more effective for spans exceeding 6 meters instead of the traditional reinforced concrete system, helping to reduce deformations and save materials. There are two types of prestressed concrete systems: pre-tension, where tendons are tensioned before concrete pouring, and post-tension, where tendons are tensioned after pouring. The unbonded system is one type of post tension system. At this research, the ultimate punching shear load was tested on the unbonded post tensioned slab and compared to the theoretical calculated value of the punching shear capacity of reinforced concrete flat slab. Strain behavior of reinforced steel bars and unbonded tendons of the specimen were studied. Also, deformation behavior of specimen during test up to failure was studied. <strong>Keywords:</strong> Prestressing strands, Unbonded tendons, Post-tensioned flat slab. <strong>Title:</strong> Punching Behavior of Unbonded Post Tensioned flat slab <strong>Author:</strong> Omnia S. Ismail, Ayman H. H. Khalil, Mahmoud El-Kateb <strong>International Journal of Computer Science and Information Technology Research</strong> <strong>ISSN 2348-1196 (print), ISSN 2348-120X (online)</strong> <strong>Vol. 12, Issue 2, April 2024 - June 2024</strong> <strong>Page No: 6-12</strong> <strong>Research Publish Journals</strong> <strong>Website: www.researchpublish.com</strong> <strong>Published Date: 03-May-2024</strong> <strong>DOI: https://doi.org/10.5281/zenodo.11109050</strong> <strong>Paper download Link (Source)</strong> <strong>https://www.researchpublish.com/papers/punching-behavior-of-unbonded-post-tensioned-flat-slab</strong>

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9

Tur, Andrei V. "Large-Size Jointless Concrete Slab-on-Grade with Combined Prestressing." Solid State Phenomena 309 (August 2020): 201–7. http://dx.doi.org/10.4028/www.scientific.net/ssp.309.201.

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In the international and national practice of design, a different type of slab on the various types of grade are becoming increasingly common. For such structural elements, shrinkage and temperature influences in combination with low tensile stress, mainly in early age, leads to the risk of cracking in reinforced concrete structures, and as result, a reduction of its durability. The present article describes some of the possible ways of usage of the post-tensioned flat slabs and the rational design procedures to provide their structural reliability. The theoretical background of the punching resistance checking, in the case when the piles support the foundation post-tensioned slabs, presented. For ground floor slabs, an iterative method is given for determining design compression pre-stresses distribution in slab sections, taking into account the restrained effect created by the friction shear stresses in contact between the slab and the base. Besides, the article presents some practical implementations of the post-tensioned slabs as an artificial base in the presence of weak soils and as a large-size ground floor (slab-on-grade) without any joints.

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10

Tamrazyan, Ashot George, and Tatiana Anatolу Matseevich. "Stiffness of Post-Tensioned Girderless Floor With Different Column Grids." Journal of Architectural and Engineering Research 1, no. 2 (2021): 56–61. http://dx.doi.org/10.54338/27382656-2021.2-3.

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The paper considers models of monolithic flat floor slabs with five spans in both directions. The cell sizes are 6×6m, 6×9m, and 6×12m. The calculation method is based on the application of temperature load and rope modeling of rod elements. It is shown that post-stressing should be used for slab side lengths over 7 m, as the installation of pre-stressed reinforcement for shorter lengths is less feasible and causes high economic costs.

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11

Ahmad, Omar, Kabir Sadeghi, and Fatemeh Nouban. "Comparison of the post-tensioned, solid, hollow block, and flat slabs in terms of economy considering different span lengths." International Journal of Applied Mechanics and Engineering 28, no. 2 (2023): 24–33. http://dx.doi.org/10.59441/ijame/168936.

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From among the several types of slabs, there is uncertainty about the most cost-effective one for structures with short, medium, and long spans. A study comparing the cost of the solid, flat, hollow block (HB), and post-tensioned (PT) slabs for 4, 6, and 8m spans was conducted using SAFE software. For each span length, the total quantities of concrete and steel bars were found and compared for 4 slabs. Then, the total cost of steel bars, concrete, blocks, tendons, and formwork was tabulated and compared. The findings revealed that the quantity of concrete in slabs with 4 and 6m spans is the least in the HB slabs, while for slabs with 8m spans, the quantity of concrete is the least in the PT slab. Besides, the quantity of steel bars in slabs with 4, 6, and 8 spans is the least in PT slabs. In terms of economy, the most cost-effective option is the flat slab for 4m spans, with savings of about 14, 9, and 17% compared to solid, HB, and PT slabs, respectively. On the other hand, for 6 and 8m spans, the most cost-effective option is the PT slab, with savings of about 10, 6, and 6% for the 6m span, and 10, 20, and 22% for 8m span compared to solid, HB, and flat slabs, respectively. Therefore, for 6m spans and more, PT slabs offer significant cost savings.

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12

Faridmehr, Iman, Moncef L. Nehdi, Mehdi Nikoo, and Kiyanets A. Valerievich. "Predicting Embodied Carbon and Cost Effectiveness of Post-Tensioned Slabs Using Novel Hybrid Firefly ANN." Sustainability 13, no. 21 (2021): 12319. http://dx.doi.org/10.3390/su132112319.

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Post-tensioning has become a strong contender for manufacturing reinforced concrete (RC) members, especially for flat slabs in large-span structures. Post-tensioned (PT) slabs can lead to considerable material savings while reducing the embodied carbon (embodied CO2), construction time, and life cycle maintenance and repair costs. In this research, a novel hybrid Firefly–Artificial Neural Network (Firefly–ANN) computational intelligence model was developed to estimate the cost effectiveness and embodied CO2 of PT slabs with different design variables. To develop the dataset, several numerical models with various design variables, including the pattern of tendons, slab thickness, mechanical properties of materials, and span of slabs, were developed to investigate the sustainability and economic competitiveness of the derived designs compared to benchmark conventional RC flat slabs. Several performance measures, including punching shear and heel drop vibration induced by human activity, were used as design constraints to satisfy safety and serviceability criteria. The economic competitiveness of PT slabs was more evident in larger spans where the cost and embodied CO2 emissions decreased by 39% and 12%, respectively, in PT slabs with a 12-m span length compared to conventional RC slabs. Sensitivity analysis also confirmed that the cost and embodied CO2 emissions were very sensitive to the slab thickness by 86% and 62%, respectively.

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13

Basaraboyina, Moshe, Ramesh Velivela, Siva Rami Reddy Garimireddy, and N. S. M. Ravi Kumar. "Structural Behavior Comparison on Earthquake Resistance of High-Rise Mall Building (Framed Structure,Flat Slab and PT Flat slab)." IOP Conference Series: Earth and Environmental Science 1280, no. 1 (2023): 012027. http://dx.doi.org/10.1088/1755-1315/1280/1/012027.

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Abstract The rate of urban population growth and the amount of available space had a significant impact on the construction of high-rise mall buildings in developing countries like the USA, UK, Australia, and Hong Kong. These high-rise mall constructions may be constructed using a variety of structural techniques. Today, RC Frame structures are often employed in constructing. Usually, these structures are employed to counteract the sizeable moments brought on by applied stresses. On the other hand, flat slab structural systems, in which the slab is directly supported by columns, have lately been adopted in many buildings because they have the advantage of greater clear floor-to-floor heights to satisfy the economical, easier form-work, quicker construction duration, and architectural needs. On the other hand, with a post-tensioned slab, the PT flat slab Structural System uses high-strength tensioned steel strands to compress the slab, maintaining the bulk of the concrete in compression. When compared to RC framed structural system, this results in a very efficient construction that minimizes partial consumption and reduces the economic span range. Three cellar+Ground+9 higher floors structural models of a high rise mall building with RC framed structure, flat slab, and PT flat slab structural system arrangement are taken into consideration in the current study. The study is completed by taking into account seismic zone II and type I soil condition, and it takes into consideration the susceptibility of purely RC framed structures, solely flat slab, and completely PT flat slab systems. The structural behavior of an RC-framed structure, a flat slab, and a PT flat slab are being compared for earthquake loads. The response spectrum approach is used to do the analysis.With the use of analytical tools, parameters such as storey displacement, storey drift, base shear, and storey shear are calculated. The findings are then compared between three structural system.

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Rath, Soubhagya Ranjan, Susanta Kumar Sethy,, and Mukesh Kumar Dubey. "Comparative Study on Analysis and Designing of Post-Tensioned Flat Slab Vs Conventional Slab." International Journal of Research in Advent Technology 7, no. 5 (2019): 192–98. http://dx.doi.org/10.32622/ijrat.75201947.

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Tahmasebinia, Faham, Zhiyuan Hu, Qianhao Wei, and Wenjie Ma. "Numerically Evaluation of Dynamic Behavior of Post-Tensioned Concrete Flat Slabs under Free Vibration." Sustainability 15, no. 1 (2023): 845. http://dx.doi.org/10.3390/su15010845.

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The objective of this paper is to investigate the dynamic behaviour of post-tensioned concrete flat slabs with different geometries and damping ratios. Four groups of models with different lengths, widths, thicknesses and damping ratios designed according to the AS3600 standard. These were used to determine the influence of each parameter on the vibration serviceability by comparing the control variable method with the reference model. The vibration assessment parameters were used as natural frequency, peak acceleration, and response factor. Both the SCI/CSTR43 standard theoretical calculations method and the Strand7 finite element analysis (FEA) method are used to determine the effect of different geometries and damping ratios on vibration. The feasibility of the Strand7 FEA method for vibration analysis is also assessed by calculating the errors of the two methods. The paper concludes that the Strand7 FEA method is highly accurate and feasible. The span in both directions has a large effect on the natural frequency, and increasing both the slab thickness and the damping ratio are effective methods to improve the vibration serviceability. Based on the research in this paper, recommendations are provided for future vibration design of post-tensioned concrete slabs.

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Rath, Soubhagya Ranjan, Susanta Kumar Sethy,, and Mukesh Kumar Dubey. "Review Paper on Post-Tensioned Flat Slab with Drop Panels and Its Comparison with Conventional Slab." International Journal of Research in Advent Technology 7, no. 4 (2019): 463–65. http://dx.doi.org/10.32622/ijrat.742019163.

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17

Dilger, Walter H., and Marwan Shatila. "Shear strength of prestressed concrete edge slab–column connections with and without shear stud reinforcement." Canadian Journal of Civil Engineering 16, no. 6 (1989): 807–19. http://dx.doi.org/10.1139/l89-124.

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Results are reported of tests to failure on six full-scale unbonded post-tensioned prestressed concrete slab–edge column specimens. The objective is to study experimentally the strength and behaviour of this type of connections. The variables are quantity and distribution of stud shear reinforcement and length of overhang. The relevant design equations suggested by Dilger and Ghali as well as several models by others for predicting the strength of prestressed concrete slab–edge column connections are compared with test results. It is concluded that the ACI and CSA provisions for predicting the strength of such connections are conservative, and that the presence of stud shear reinforcement is a good means of increasing the strength and ductility of this type of connections. Key words: shear strength, flat slabs, prestressed concrete, unbonded tendons, shear reinforcement, design, ductility.

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18

Mahrous, Amgad, Mariam Ehab, and Hamed Salem. "Progressive collapse assessment of post-tensioned reinforced concrete flat slab structures using AEM." Engineering Failure Analysis 109 (January 2020): 104278. http://dx.doi.org/10.1016/j.engfailanal.2019.104278.

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Park, Young Mi, Sang Whan Han, and Jong Hyuk Ryu. "Comparison of Seismic Behaviors of Interior Joints in PT and RC Flat Plate Systems." Key Engineering Materials 348-349 (September 2007): 741–45. http://dx.doi.org/10.4028/www.scientific.net/kem.348-349.741.

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The purpose of this study is to compare the seismic behaviors of interior post-tensioned (PT) and reinforced concrete (RC) flat plate slab-column connections designed to resist only gravity loads. In general, flat plate systems have been used to support gravity loads, which should be constructed with lateral system such as shear walls or moment frames. Flat plate systems should retain the ability to undergo the lateral drift associated with the lateral system without loss of gravity load carrying capacity. Although these systems are common, relatively little experimental study has been conducted to assess actual behavior under lateral loads. Therefore, this study was undertaken to assess the seismic performance of two PT and one RC slab-column interior connection under high gravity loads. This study observed that PT connections had a better seismic performance than corresponding RC connections in terms strength, deformability, energy absorption.

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20

Han, Sang Whan, Ki Hoon Moon, and Young-Mi Park. "Effect of slab bottom reinforcement on seismic performance of post-tensioned flat plate frames." Magazine of Concrete Research 64, no. 4 (2012): 317–34. http://dx.doi.org/10.1680/macr.11.00012.

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21

Athifah, Ninditya Choirul, Jessica Sjah, Nuraziz Handika, and Indra Nurudin Fathoni. "Comparison Analysis of Special Moment Resisting Frame Structure and Post-Tensioned Flat Slab Structure with Separated Gravity and Lateral Load Resisting System on Three-Story Warehouse Building Design." IOP Conference Series: Earth and Environmental Science 1488, no. 1 (2025): 012064. https://doi.org/10.1088/1755-1315/1488/1/012064.

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Abstract As a place to store goods, a warehouse needs to hold a heavy load (12-25 kPa) and requires a large space so that the building structure has a long span between columns (11-17 m) and a large height between floors (5-11 m) but also complies with the code to produce a seismic resilient infrastructure. However, building structures in Indonesia generally are designed using Special Moment Resisting Frame (SMRF) with the slabs generally supported by beams that tend to only be able to withstand small loads (2-6 kPa) and is only suitable for spans of 6-9 m. Previous studies have shown that Post-Tensioned Flat Slab (PTFS) structure with the application of Separated Gravity and Lateral load Resisting (SGLR) systems is a promising solution for this problem. This study aims to determine the effective strand distribution layout and compare the SMRF structure with PTFS structure in terms of seismic responses and cost based on material volume. A case study of a warehouse building with 11.4 m span, 25 kN/m2 live load, and 11.2 m height between floors is used. For the PTFS structure, three types of strand distribution layouts will be studied. The analysis was carried out using the assistance of ETABS 21 with response spectrum seismic load. The analysis results showed that the distribution of the strand did not produce a significant difference in terms of slab stress and the PTFS structure with the application of SGLR produces a safe seismic response and is more cost-effective compared to the SMRF structure, making it feasible for use in warehouse buildings in earthquake-prone areas of Indonesia.

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22

Jiao, Ziyang, Yi Li, Hong Guan, et al. "Experimental and numerical investigation of punching and post-punching shear capacities of post-tensioned flat plate slab-column joints influenced by prestressing levels." Engineering Structures 313 (August 2024): 118259. http://dx.doi.org/10.1016/j.engstruct.2024.118259.

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23

Wei, Ya, Francis T. K. Au, Jing Li, and Neil C. M. Tsang. "Experimental and numerical investigation of post-tensioned concrete flat slabs in fire." Journal of Structural Fire Engineering 7, no. 1 (2016): 2–18. http://dx.doi.org/10.1108/jsfe-03-2016-001.

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Purpose This paper aims to understand the structural fire performance of two-way post-tensioned flat slabs, particularly their deformations and load-carrying mechanisms in fire, and to explore the behaviour of post-tensioned high-strength self-compacting concrete flat slabs with unbonded tendons in fire. Design/methodology/approach Four tests of post-tensioned high-strength self-compacting concrete flat slabs were conducted under fire conditions. Numerical modelling using the commercial package ABAQUS was conducted to help interpret the test results. Findings Two of the specimens with lower moisture contents demonstrated excellent fire resistance performance, while the others with slightly higher moisture contents experienced severe concrete spalling. Originality/value The test results were discussed in respect of thermal profiles, deflections, crack patterns and concrete spalling. The performance of post-tensioned high-strength self-compacting concrete flat slabs with unbonded tendons under fire conditions was better understood.

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Zhang, Li, Ya Wei, Francis Tat Kwong Au, and Jing Li. "Experimental study of two-way post-tensioned flat slabs in fire." Journal of Structural Fire Engineering 9, no. 3 (2018): 237–51. http://dx.doi.org/10.1108/jsfe-01-2017-0016.

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Purpose This study aims to investigate the influence of tendon layout, pre-stressing force, bond condition and concrete spalling on the structural behaviour of two-way post-tensioned flat slabs at elevated temperatures. Design/methodology/approach Fire tests of four scale specimens of two-way post-tensioned concrete flat slabs were performed and analysed. Three of them were provided with bonded tendons, while the other was unbonded for comparison. The fabrication of specimens, phenomena observed during testing, temperature distributions, deflections and occurrence of concrete spalling were examined. Findings Different degrees of concrete spalling observed at the soffit had significant effects on the temperature distribution and stress redistribution. This was the major reason for the progressive concrete spalling observed, resulting in loss of structural integrity and stiffness. Originality/value The structural behaviour of two-way post-tensioned concrete flat slabs at elevated temperatures is less understood compared to their one-way counterparts. Therefore, the present study has focused on the structural behaviour of two-way post-tensioned concrete flat slabs with bonded tendons in fire, a field in which relatively little information on experimental work can be found.

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Park, Young Mi, Sang Whan Han, and Youn Ho Rew. "Stiffness reduction factor for post-tensioned flat plate slabs." Magazine of Concrete Research 64, no. 1 (2012): 83–92. http://dx.doi.org/10.1680/macr.10.00150.

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26

Jensen, Stine Maria Frøiland, and Jan Arve Overli. "Steel Fibres as Reinforcement in Post-tensioned Flat Slabs." Civil Engineering and Architecture 3, no. 5 (2015): 89–98. http://dx.doi.org/10.13189/cea.2015.030501.

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27

Shallan, Mohamed, Hanaa Abd El-Mottaleb, Tharwat Sakr, and Ragab Shaker. "Response of Post-Tensioned Two Way Flat Slabs to Vibration." Egyptian Journal for Engineering Sciences and Technology 33, no. 1 (2021): 37–44. http://dx.doi.org/10.21608/eijest.2021.57237.1036.

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Török, Iosif, Attila Puskás, and Jácint Virág. "Post-tensioned Flat Slabs with Unbonded Tendons for Public Buildings." Procedia Manufacturing 32 (2019): 102–9. http://dx.doi.org/10.1016/j.promfg.2019.02.189.

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Park, Young-Mi, Jin-Ah Park, and Sang-Whan Han. "Stiffness Reduction Factor for Post-Tensioned Flat Plate Slabs under Lateral Loads." Journal of the Korea Concrete Institute 21, no. 5 (2009): 661–68. http://dx.doi.org/10.4334/jkci.2009.21.5.661.

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30

Barbán, Vladimir V., Guilherme S. Melo, and Alessandra L. Carvalho. "Punching shear tests of post‐tensioned flat slabs supported on edge columns." Structural Concrete 21, no. 1 (2019): 247–61. http://dx.doi.org/10.1002/suco.201900160.

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Afifi, Ahmed, Mohamed Ramadan, Ahmed M. Farghal Maree, Ahmed M. Ebid, Amr H. Zaher, and Dina M. Ors. "Punching Capacity of UHPC Post Tensioned Flat Slabs with and Without Shear Reinforcement: An Experimental Study." Civil Engineering Journal 9, no. 3 (2023): 567–82. http://dx.doi.org/10.28991/cej-2023-09-03-06.

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Punching capacity is one of the main items in the design of both pre-stressed and non-pre-stressed flat slabs. All international design codes include provisions to prevent this type of failure. Unfortunately, there is no code provision for UHPC yet, and hence, the aim of this research is to experimentally investigate the impact of column dimensions and punching reinforcement on the punching capacity of post-tensioned slabs and compare the results with the international design codes’ provisions to evaluate its validity. The test program included five slabs with a compressive strength of 120 MPa: one as a control sample, two to study the effect of column size, and the last two to study the effect of punching reinforcement. Comparing the results with the design codes showed that ACI-318 is more accurate with an average deviation of about 5%, while EC2 is more conservative with an average deviation of about 20%. Besides that, punching reinforcement reduces the size of the punching wedge by increasing the crack angle to 28° instead of 22° for slabs without punching reinforcement. Also, the results assure that both ductility and stiffness are enhanced with the increased column dimensions and punching reinforcement ratio. Doi: 10.28991/CEJ-2023-09-03-06 Full Text: PDF

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32

Lin, Chen, Zhanchong Shi, Terje Kanstad, Mohammad Haj Mohammadian Baghban, and Guomin Ji. "Application of steel fiber reinforced-concrete in post-tensioned flat slabs: A numerical study." Engineering Structures 324 (February 2025): 119347. http://dx.doi.org/10.1016/j.engstruct.2024.119347.

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33

Rossi, Dalila, Carlo Pettorruso, Virginio Quaglini, and Sara Cattaneo. "An Explorative Investigation of the Flat-Jack Test for Prestress Assessment in Post-Tensioned Concrete Structures." Applied Sciences 15, no. 11 (2025): 6199. https://doi.org/10.3390/app15116199.

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This preliminary study explores the feasibility of using the flat-jack test to assess residual prestress in post-tensioned concrete elements. Experimental testing was conducted on three concrete slabs under controlled laboratory conditions, with known stress states induced by axial loading. Two flat-jack sizes and two gage lengths were considered, and a tailored calibration procedure was implemented to reflect expected field conditions. The test produced acceptable stress estimations, with accuracy influenced by both the gage length and the jack size. The results are discussed within the broader context of prestress assessment, including a comparison between the flat-jack test’s performance in concrete and masonry and its positioning relative to alternative methods. The experimental design, result presentation, and theoretical analysis in this study are intentionally simple and not yet sufficiently mature to support practical application. Nevertheless, the findings offer promising initial insights and practical inspiration for practitioners and researchers exploring alternative methods for residual stress assessment in prestressed concrete structures, underscoring the need for further research to refine the methodology and validate its broader applicability.

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Szydłowski, Rafał, and Barbara Łabuzek. "Impact of the Method of Analysing Post-Tensioned Flat Slabs on the Amount of Prestressing." IOP Conference Series: Materials Science and Engineering 473 (February 26, 2019): 012046. http://dx.doi.org/10.1088/1757-899x/473/1/012046.

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35

Yousif, S., and M. P. Saka. "Optimum design of post-tensioned flat slabs with its columns to ACI 318-11 using population based beetle antenna search algorithm." Computers & Structures 256 (November 2021): 106520. http://dx.doi.org/10.1016/j.compstruc.2021.106520.

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Shruti Vijaykumar, Deshmukh, and G. C. Jawalkar. "Comparative Analysis of RCC Flat Slab with Post-Tensioned Flat Slab." International Journal of Scientific Research in Science, Engineering and Technology, May 20, 2019, 241–49. http://dx.doi.org/10.32628/ijsrset196356.

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A floor system plays an important role in overall cost and service of the building. Flat plate/slabs are economical since they have no beams and hence can reduce the floor height by 10-15%. In this paper analysis of RC flat slab with drop and post-tensioned flat slab with drop is carried out. This analysis is done for ground floor slab level and G+2 slab level. A finite element based software ETABS (vr.2016) is used for analyzing parameters like strip wise bending moments, shear force and displacements. A comparative analysis is carried out for maximum values of bending moments, shear force and displacements found in RCC and PT flat slab. The present work provides reasonable information regarding the suitability of Post-tensioned flat slab over RC flat slab.

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Ismail, Omnia S., Ayman H. H. Khalil, and Mahmoud El-Kateb. "Punching shear behavior of flat slabs with post-tensioning in one direction." Innovative Infrastructure Solutions 9, no. 12 (2024). https://doi.org/10.1007/s41062-024-01660-w.

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AbstractPost-tensioned flat slab (PT) system has become widely used in the construction field in the recent time. The main advantages of the post-tensioned slab system are strength improvement and resource savings. Additionally, the conventional post-tension flat slab is an economical system, especially for long-span structures. However, it may not be suitable for structures with significant variations in spans in both directions of the slab. The unidirectional post-tensioned slab, which involves a post-tensioning system in one direction of the slab and a normal reinforced concrete flat slab system in the perpendicular direction. This offers an effective solution for the specific issues mentioned above. This system is also recommended for structures with expansion joints that do not have enough space to install the post-tension system and tensioning machine. In the current research, the punching shear behavior of conventional bidirectional PT slab was compared to unidirectional PT slab counterparts. Five post-tensioned specimens were tested to investigate the punching shear behavior for unidirectional PT slabs at different parameters. Variation of precompression stress level using different numbers of tendons and distribution of tendons were the variable parameters studied in unidirectional PT slabs. All slabs were exposed to static loading until failure using a 2200 kN hydraulic jack with a pump capacity. Deflection behavior of all slabs was measured using a linear variable differential transformer device (LVDT). Additionally, strain gauges were fixed on concrete, steel bars, and tendons to evaluate the strain of each item. The results obtained that the five tendons unidirectional PT specimens had a 1.4% reduction of punching shear resistance compared to bidirectional PT specimen counterparts. Increasing precompression stress improved punching shear capacity. Specimens with banding tendons at the punching shear zone enhanced punching shear capacity by 4.5% more than those with distributed tendons. The study also indicated that the ultimate punching shear failure load was the highest in conventional post-tensioned specimen. Additionally, the unidirectional post-tensioned slabs with five tendons and a precompression stress of around 1.5 MPa exhibited a 1.2% slightly higher ultimate failure load than the unidirectional counterpart with seven tendons and a precompression stress of around 2.5 MPa, However the seven tendons specimen had the best deflection behavior compared to all specimens. The three tendons specimen with a precompression stress around 1 MPa, the lowest precompression stress, exhibited the lowest ultimate failure load. The calculated punching shear capacities of all specimens from conventional post-tensioned flat slabs equations of various codes, such as the American Building Code (ACI-214), Euro Code (EC) and Egyptian Practice Code ECP-203, are compared to the existing experimental results. For the studied specimens, the cost of unidirectional PT slabs was more economical by around 29% compared to a conventional PT slab.

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Tur, Andrei, and Viktar Tur. "REALIBILITY OF THE LARGE SIZE POST-TENSIONED SLAB-ON-GRADE." Inżynieria Bezpieczeństwa Obiektów Antropogenicznych, no. 3 (October 6, 2019). http://dx.doi.org/10.37105/iboa.6.

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The present article describes some of the possible ways of usage of the post-tensioned flat slabs and the rational design procedures to provide their structural reliability. Theoretical background of the punching resistance checking, in the case when the piles support the foundation pos-tensioned slabs, presented. For ground floor slabs, an iterative method given for determining design compression pre-stresses distribution in slab sections, taking into account the restrained effect created by the friction shear stresses in contact between slab and the base. In addition, the article presents some uncial practical implementations of the post-tensioned slabs as an artificial base in the presence of weak soils and as a large-size ground floor (slab-on-grade) without any joints.

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39

Furkhan Ahmed, Siddiqui. "EVALUATION OF POST TENSIONED SLAB AND ITS CONTRAST WITH TRADITIONAL RCC SLAB: REVIEW." International Journal of Engineering Applied Sciences and Technology 6, no. 1 (2021). http://dx.doi.org/10.33564/ijeast.2021.v06i01.014.

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Post-tensioning is a technique for reinforcing concrete slabs with high-strength tendons. Tendons retain much more concrete in compression. Posttension floors are capable of bearing almost every dead load due to their tensioned tendons, which aid to perform live loads acts on slabs & make them stronger than traditional slabs. For commercial and residential floors, PT slabs are suggested for comparatively limited depths, less heavy weights and free floor elevation. The research on the R.C.C and PT slab has been reviewed, with an integrative impact with the lateral load. The primary aim of this, is to review the reaction and behavioural characteristics of the post-tension flat plate during an earthquake and to contrast it with the traditional slab. For this purpose, the past papers related to the PT slab were studied and a successful conclusion has been made.

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40

"A REVIEW OF DESIGN OF FLAT SLAB & IT’S COMPARISION WITH POST-TENSIONED FLAT SLAB." International Journal of Advance Engineering and Research Development 1, no. 11 (2014). http://dx.doi.org/10.21090/ijaerd.01114.

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41

Nagaraj, Ajay. "Comparative Performance Studies on Bonded Post-Tensioned and RC Flat Slab." SSRN Electronic Journal, 2015. http://dx.doi.org/10.2139/ssrn.3619137.

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42

Samarakoon, S. M. Samindi M. K., and Bjarte Hodne. "Parametric Study of Different Unbonded Tendon Layouts in Pre-stressed Concrete Flat Plates." International Journal of Concrete Structures and Materials 14, no. 1 (2020). http://dx.doi.org/10.1186/s40069-020-00433-w.

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AbstractPost-tensioned unbonded tendons are widely used in flat slabs/plates when there is a demand for large span lengths, durable tendons and a reduction in the weight of structure. For post-tensioned flat slab/plates, different tendon layouts have been discussed in the literature. It is vital to compare the structural response (i.e., deflection and stresses) and the clashing of tendons of the proposed tendon layouts in the literature to select an appropriate layout. Hence, this study focuses on the analysis of three different six-panel flat plates (i.e., panel sizes: 6 m × 6 m, 9 m × 6 m and 11 m × 6 m) with five different tendon layouts, using computer programs ADAPT-Floor Pro and FEM-Design 17, based on linear finite element (FE) analysis. Short-term/long-term deflection and stress due to service load obtained from the computer programs has also been compared, to highlight the differences. Ultimate bending moment of resistance was calculated theoretically for different layouts and compared. Results from the analysis show that, when a higher portion of tendons is concentrated instead of distributed, stresses caused by other structural loads are counteracted best. The layout with all tendons concentrated also has the best results in terms of deflections.

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43

"Seismic Performance of Post Tensioned Flat Plate Structures according to Slab Bottom Reinforcement." Journal of the Earthquake Engineering Society of Korea 12, no. 4 (2008): 11–17. http://dx.doi.org/10.5000/eesk.2008.12.4.011.

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44

"Post-Tensioned Concrete Flat Slabs at Edge Columns." ACI Materials Journal 90, no. 3 (1993). http://dx.doi.org/10.14359/4223.

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45

"Punching Shear in Post-Tensioned Flat Slabs with Stud Rail Shear Reinforcement." ACI Structural Journal 108, no. 5 (2011). http://dx.doi.org/10.14359/51683209.

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46

Carvalho, Alessandra L., Guilherme S. Melo, and Ronaldo B. Gomes. "Punching Shear in Post-Tensioned Flat Slabs with Shear Reinforcement: Codes and Tests." ACI Structural Journal 113, no. 2 (2016). http://dx.doi.org/10.14359/51688197.

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47

Bahoria, Boskey Vishal, and Dhananjay K. Parbat. "Analysis and Design of RCC and Post-Tensioned Flat Slabs Considering Seismic Effect." International Journal of Engineering and Technology, 2013, 10–13. http://dx.doi.org/10.7763/ijet.2013.v5.500.

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48

Ramadan, Mohamed, Dina M. Ors, Ahmed M. Farghal, Ahmed Afifi, Amr H. Zaher, and Ahmed M. Ebid. "Punching shear behavior of HSC & UHPC post tensioned flat slabs – An experimental study." Results in Engineering, January 2023, 100882. http://dx.doi.org/10.1016/j.rineng.2023.100882.

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49

Díaz, Rafael Sanabria, Leandro Mouta Trautwein, and Luiz Carlos Almeida. "Numerical investigation of the punching shear capacity of unbonded post‐tensioned concrete flat slabs." Structural Concrete, December 8, 2020. http://dx.doi.org/10.1002/suco.202000448.

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50

Marefat, Mohammad Sadegh. "Experimental and Numerical Evaluation of New Seismic Details for Connection of Post-tensioned Flat Slabs to Edge Steel Columns." Current Trends in Civil & Structural Engineering 6, no. 4 (2020). http://dx.doi.org/10.33552/ctcse.2020.06.000644.

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