Effect of intrinsically post-tensioned steel fibre reinforced concrete on the structural response and design of slabs on grade and suspended slabs - From design stage to application

Xavier Destrée, Rolands Cepuritis, Gregor Fischer, Martins Suta

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

The post-tensioning effect in the concrete slabs described in this paper is achieved by an internally restrained expansion mechanism, which is the result of using an expansive additive in combination with steel fibre reinforcement. Due to this effect, the tensile stresses in the slab due to restrained contraction as well as flexure are compensated and significantly reduced by up to 50% while the curling at the edges of the slab is eliminated. In this paper, the modelling and design process are outlined based on the experience of several million square meters of successfully completed slabs in the last decade. Multiple full-scale loading tests have been analysed by back-calculation and compared to laboratory test results of the constituent materials. The benefits of the presented slab system are an extended service life, significantly reduced maintenance requirements, direct cost savings at the installation and a reduced carbon footprint due to the reduction of concrete and cement consumption. The innovative slab system has been developed and patented by Primekss in Latvia. It has now been in use since 2008 and is considered by owners and tenants as the new generation of concrete flooring technologies.
Original languageEnglish
Title of host publicationFib 2018 - Proceedings for the 2018 Fib Congress: Better, Smarter, Stronger
PublisherFederation Internationale du Beton
Publication date2019
Pages3410-3420
Publication statusPublished - 2019
EventThe International Federation for Structural Concrete 5th International fib Congress - Melbourne, Australia
Duration: 7 Oct 201811 Oct 2018
Conference number: 5

Conference

ConferenceThe International Federation for Structural Concrete 5th International fib Congress
Number5
CountryAustralia
CityMelbourne
Period07/10/201811/10/2018

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