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Modelling basalt fibre reinforced glass concrete slabs at ambient and elevated temperatures

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Abstract

The analysis of tests conducted on small-scale slabs at ambient and elevated temperatures is presented in this paper. The slabs were produced from a new type of concrete containing different levels of glass sand and basalt fibre. Two methods were used for this purpose: a simplified method developed previously and a finite element method, using the software package ABAQUS. For the slabs at ambient temperature, the results showed a good correlation for the load–displacement relationship between the test and the two models up to the failure loads. For the slabs at elevated temperature, the ABAQUS model gave a reasonable prediction for the temperature–displacement relationship while the simplified method gave a conservative prediction for the maximum allowable vertical displacement. As a result, the simplified method underestimated the temperature at which the reinforcement fracture occurs for this type of concrete slab, incorporating glass sand and basalt fibres. Further work is required to remove this conservatism from the simplified design method for this type of concrete.

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Abbreviations

e :

Enhancement due to membrane action

f cu :

Compressive cube strength of concrete

P :

Theoretical yield line load

P test :

Maximum sustained load from the test

T Bot :

Temperature at the bottom of the slab

T Mesh :

Temperature of the slab reinforcement

T Pred :

Predicted temperature

T Test :

Test temperature

T top :

Temperature at the top of the slab

ΔABAQUS :

Maximum displacement predicted by ABAQUS

ΔFire :

Maximum vertical displacement at failure for elevated temperature tests

Δmax :

Maximum displacement

ΔTest :

Maximum displacement recorded in the test

ρ :

Reinforcement ratio

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Authors and Affiliations

  1. Department of Civil Engineering, Al-Qadisiyah University, P.O. Box 1881, Ad Diwaniyah, Iraq

    Tumadhir Merawi Borhan

  2. School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, Sackville Street Building, Manchester, M13 9PL, UK

    Colin G. Bailey

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  1. Tumadhir Merawi Borhan
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  2. Colin G. Bailey
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Correspondence to Tumadhir Merawi Borhan.

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Borhan, T.M., Bailey, C.G. Modelling basalt fibre reinforced glass concrete slabs at ambient and elevated temperatures. Mater Struct 47, 999–1009 (2014). https://doi.org/10.1617/s11527-013-0109-2

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