دانلود رایگان مقاله لاتین پانل قالب پی وی سی بر رفتار خمشی از سایت الزویر
عنوان فارسی مقاله:
اثر بستری در محل هندسه پانل قالب های پی وی سی بر رفتار خمشی دیوار بتن مسلح
عنوان انگلیسی مقاله:
Effect of stay-in-place PVC formwork panel geometry on flexural behavior of reinforced concrete walls
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
ay-in-place (SIP) formwork is a permanent system commonly used in construction projects throughout the world. As traditional formwork is removed or “stripped” when the hardened concrete has achieved sufficient strength, stay-in-place forms become part of the finished structure. SIP formwork can play a role in providing additional structural capacity to an element. In recent years, polyvinyl chloride (PVC) SIP formwork has been developed as a solution for fast, secure, and convenient concrete construction. Researchers investigated the flexural behavior of PVC stay-in-place formwork with and without steel reinforcement (Chahrour et al. [3], Rteil et al. [5], Wahab and Soudki [7]). Test variables included the thickness of the concrete core, reinforcement ratio, and the configuration of the PVC connectors (middle or braced). It was concluded that adding PVC SIP forms increased the cracking, yield, and ultimate load of the PVC encased specimens over their respective control walls. The configuration of PVC connectors did not have a significant impact on steel reinforced specimens. It was also concluded that the PVC contribution to flexural strength depended on the reinforcing ratio and section thickness. As the concrete core thickness and/or the internal reinforcement decreased, the enhancement of the PVC encasement to the wall's behavior increased. The effect of connector's configuration on the mechanical performance of encased concrete walls was explored in depth by Kuder et al. [4]. The effect of the PVC on increasing the flexural capacity and toughness of their specimens varied from 39% to 66% and 41% to 60%, respectively. The PVC connector configuration with the highest quantity of polymer in the cross-section showed the highest increase in ultimate load. Research is required to further investigate the flexural behavior of PVC encased concrete wall systems and develop an analytical model to estimate the yield and ultimate capacities of these composite members. Depending on the significance of improvement, a reinforced concrete wall that is traditionally formed could have the same capacity as a PVC encased wall with a thinner cross-section. This change in thickness, however small, applied to an entire structural system would result in tangible materials and cost savings. In addition, the concrete compressive strengths of the tested walls in the literature were in excess of 40 MPa. The effect of using concrete strengths more reflective of low rise construction (25–30 MPa) is of interest. Finally, additional PVC panel geometries have been developed. Their influence on the flexural performance of PVC encased walls has not been investigated yet. The discussion of the results of this research is divided into two portions. Part one, discussed herein, will explore the experimental results while part two will present the analytical model and compare its results to the experimental results. The analytical model was also used to predict the behavior of different cross sections. Details of the model are reported elsewhere (Scott [6]) and will be published in a separate paper. It is also worth mentioning that the work presented here is a part of a larger experimental program that investigates the behavior of the walls under different types of loading. The behavior of the walls under combined axial load and bending moments has been investigated and is reported elsewhere (Abdel Havez [2] and Abdel Havez et al. [1]).
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کلمات کلیدی:
Effect of PVC Stay-In-Place Formwork on Mechanical Performance of ... ascelibrary.org/doi/full/10.1061/(ASCE)0899-1561(2009)21%3A7(309)?src=recsys The PVC panels are joined using connectors and serve as the formwork into ... on mechanical performance, specifically, on flexural and compressive behavior, .... the effectiveness of the confining material depends on the geometry of the cross ... Effect of stay-in-place PVC formwork panel geometry on flexural ... citeweb.info/20160347646 {{cite web | title=Effect of stay-in-place PVC formwork panel geometry on flexural behavior of reinforced concrete walls | year=2016 ... [PDF]Behaviour of PVC Encased Reinforced Concrete Walls under ... https://uwspace.uwaterloo.ca/bitstream/handle/10012/8192/Abdel_Havez_Amr.pdf;... by A Abdel Havez - 2014 - Cited by 3 - Related articles The PVC SIP formwork consists of interconnected elements; panels and ...... flexural reinforcement for the concrete element or the shear and flexural ..... deformation compatibility between the confining material and the concrete, the geometry. Flexure - 首页 en.ustc.findplus.cn/?h=search_list&query...%22FLEXURE%22 - Translate this page Experimental evaluation of flexural behavior of composite beams with .... Effect of stay-in-place PVC formwork panel geometry on flexural behavior of reinforced ... 2352-0124 - Search engine for life-science PDFs - Pubget pubget.com/journal/2352-0124/2352-0124 Effect of stay-in-place PVC formwork panel geometry on flexural behavior of ... Behaviour of PVC encased reinforced concrete walls under eccentric axial ... [PDF]PABERFIA – Lightweight sandwhich panels in steel fiber reinforced ... https://repositorium.sdum.uminho.pt/bitstream/1822/12987/1/SPR_45.pdf by JAO Barros - 2005 - Cited by 6 - Related articles Figure 4.2: Metallic formwork to build the panel and disposition of the lightweight ..... namely: fiber geometric characteristics, fiber material properties, concrete ..... SFRSCC on the compression and on the flexural behavior, series of tests with ...... moments, was responsible for the quasi-plastic response of the panels up to a. [PDF]Double-curved Panels produced in a flexible Mould with self ... https://biblio.ugent.be/publication/7147033/file/7147057.pdf by S Grünewald - 2016 - Related articles flexural behaviour. 1 Introduction. Architecture with curved geometry, found for example in domes and vaults and later also in shell structures, has ... Timber, steel and plastic composites have been used to produce formwork for double-curved ...
