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      Effects of High Temperature on Creep Behaviour of Glazed Hollow Bead Insulation Concrete

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          Abstract

          Glazed hollow bead insulation concrete (GHBC) presents a promising application prospect in terms of its light weight and superior fire resistance. However, only a few studies have focused on the creep behaviour of GHBC exposed to high temperatures. Therefore, in this study, the mechanism of high temperature on GHBC is analysed through a series of tests on uniaxial compression and multistage creep of GHBC, exposed from room temperature up to 800 °C. The results show a decrease in the weight and compressive strength of GHBC as the temperature rises. After 800 °C, the loss of weight and strength reach to 9.67% and 69.84%, respectively. The creep strain and creep rate increase, with a higher target temperature and higher stress level, while the transient deformation modulus, the creep failure threshold stress, and creep duration are reduced significantly. Furthermore, the creep of GHBC exhibits a considerable increase above 600 °C and the creep under the same loading ratio at 600 °C increases by 74.19% compared to the creep at room temperature. Indeed, the higher the temperature, the more sensitive the stress is to the creep. Based on our findings, the Burgers model agrees well with the creep test data at the primary creep and steady-state creep stages, providing a useful reference for the fire resistance design calculation of the GHBC structures.

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          Study on tri-axial creep experiment and constitutive relation of different rock salt

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            The effect of water on the creep behavior of red sandstone

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              Effects of deviatoric stress and structural anisotropy on compressive creep behavior of a clayey rock

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                Author and article information

                Journal
                Materials (Basel)
                Materials (Basel)
                materials
                Materials
                MDPI
                1996-1944
                19 August 2020
                September 2020
                : 13
                : 17
                : 3658
                Affiliations
                [1 ]School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China; liuyushan1997@ 123456126.com (Y.-s.L.); yaoweijing0713@ 123456163.com (W.-j.Y.)
                [2 ]Engineering Research Centre of Underground Mine Construction, Ministry of Education, Huainan 232001, China
                [3 ]State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Mine, Anhui University of Science and Technology, Huainan 232001, China
                Author notes
                [* ]Correspondence: pangjyong@ 123456163.com
                Author information
                https://orcid.org/0000-0001-9658-7501
                https://orcid.org/0000-0003-3515-2234
                Article
                materials-13-03658
                10.3390/ma13173658
                7503414
                a21e7eeb-9c8e-4b71-8114-e2550686aa49
                © 2020 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                : 01 July 2020
                : 17 August 2020
                Categories
                Article

                glazed hollow bead insulation concrete,high temperature,creep behaviour,failure analysis

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