Investigation of the stress and strain state of clay pipes under fire condition

Ding, Yining; Wang, Y.; Zhang, Y.; Paulini, P.

doi:10.1016/j.ceramint.2007.09.112

Cited by 9 publications

(10 citation statements)

References 6 publications

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“…These two effect parameters may affect the bond behaviour between fibre and concrete matrix very negatively. Pulling out of steel fibers From discussed above, it can be seen that the bond behaviour between steel fibre and matrix can be influenced negatively by both the different thermal expansion coefficient of steel fibre and concrete as well as the oxidized steel fibres during and after the heating process [10,[28][29][30][34][35][36][37]. The high heat transfer coefficient k SF of steel fibre can positive affect the temperature field and reduce the thermal stress of the FRSCHPC.…”

Section: Discussionmentioning

confidence: 99%

“…10-17 as well as Refs. [7][8][9][10][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30], some preliminary assumptions can be verified:…”

Section: Discussionmentioning

confidence: 99%

“…Although the influence factors on fire or high temperature condition have been debated for long time, they can generally be considered to include the effect of temperature-time process or temperature difference. The temperature-time relationship is the precondition for analyzing the heating effect and can significantly influence the deformation of concrete constituents or members under high temperature [19,[30][31][32]. In the furnace, all the specimens are heated at an increasing rate of 6°C/min and the peak temperatures are maintained for 3 h (Fig.…”

Section: Hardened Specimens and Experimentsmentioning

confidence: 99%

“…5, when the maximum exposure temperature achieved 900°C, the relative residual compressive strength was 11% of the original strength for PP2 and the relative loss in strength was 89%. In some studies [9,10,[19][20][21]30], PP fibre shows beneficial effect on the residual strength of concrete after the high-temperature exposures. On of the important reasons is that PP fibres melt and vapourize due to the lower melting point (160-180°C) during the rapid temperature increasing process, which makes free space in the micro-channels in the concrete matrix (see Fig.…”

Section: Residual Compressive Strength Of Hardened Concrete Samplesmentioning

confidence: 99%

“…12) indicates that some micro cracks have been formed. Lightly spalling can be one of the reasons, and non-uniform deformation among the paste, aggregate and steel fibres [15,30,[34][35][36][37] during heating process and the reversal process of cooling down can be another reason.…”

Section: Failure Pattern Of Frschpcmentioning

confidence: 99%

See 4 more Smart Citations

Study on residual behaviour and flexural toughness of fibre cocktail reinforced self compacting high performance concrete after exposure to high temperature

Ding

Azevedo

Aguiar³

et al. 2011

Construction and Building Materials

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This paper analyzed the effect of different fibres on the residual compressive strength, the ultimate load and flexural toughness, the failure pattern and the fracture energy of self compacting high performance concrete (SCHPC) after exposure to various high temperature. The micro polypropylene fibre (PP fibre) could mitigate the spalling of SCHPC member significantly, but did not show clear effect on the mechanic properties of concrete. The macro steel fibre (SF) reinforced SCHPC showed higher flexural toughness and ultimate load before and after high temperatures. The mechanical properties of hybrid fibre reinforced SCHPC (HFSCHPC) after heating were better than that of mono fibre reinforced SCHPC. The failure mode changed from pull-out of steel fibres at lower temperature to broken down of steel fibres at higher temperature. The use of hybrid fibre can be effective in providing the residual strength and failure pattern and in improving the toughness and fracture energy of SCHPC after high temperature.

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Section: Discussionmentioning

confidence: 99%

“…10-17 as well as Refs. [7][8][9][10][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30], some preliminary assumptions can be verified:…”

Section: Discussionmentioning

confidence: 99%

Section: Hardened Specimens and Experimentsmentioning

confidence: 99%

Section: Residual Compressive Strength Of Hardened Concrete Samplesmentioning

confidence: 99%

Section: Failure Pattern Of Frschpcmentioning

confidence: 99%

See 3 more Smart Citations

Study on residual behaviour and flexural toughness of fibre cocktail reinforced self compacting high performance concrete after exposure to high temperature

Ding

Azevedo

Aguiar³

et al. 2011

Construction and Building Materials

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Anti-Spalling Concrete

Han

Zhang

2017

Smart and Multifunctional Concrete Toward Sustainable Infrastructures

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Influence of different fibers on the change of pore pressure of self-consolidating concrete exposed to fire

Ding

Zhang

Cao

et al. 2016

Construction and Building Materials

100

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The focus of this paper is given to investigate the effect of different fibers on the pore pressure of fiber reinforced self-consolidating concrete under fire. The investigation on the pore pressure-time and temperature relationships at different depths of fiber reinforced self-consolidating concrete beams was carried out. The results indicated that micro PP fiber is more effective in mitigating the pore pressure than macro PP fiber and steel fiber. The composed use of steel fiber, micro PP fiber and macro PP fiber showed clear positive hybrid effect on the pore pressure reduction near the beam bottom subjected to fire. Compared to the effect of macro PP fiber with high dosages, the effect of micro PP fiber with low fiber contents on the pore pressure reduction is much stronger. The significant factor for reduction of pore pressure depends mainly on the number of PP fibers and not only on the fiber content. An empirical formula was proposed to predict the relative maximum pore pressure of fiber reinforced self-consolidating concrete exposed to fire by considering the moisture content, compressive strength and various fibers. The suggested model corresponds well with the experimental results of other research and tends to prove that the micro PP fiber can be the vital component for reduction in pore pressure, temperature as well spalling of concrete.

show abstract

Investigation of the stress and strain state of clay pipes under fire condition

Cited by 9 publications

References 6 publications

Study on residual behaviour and flexural toughness of fibre cocktail reinforced self compacting high performance concrete after exposure to high temperature

Study on residual behaviour and flexural toughness of fibre cocktail reinforced self compacting high performance concrete after exposure to high temperature

Anti-Spalling Concrete

Influence of different fibers on the change of pore pressure of self-consolidating concrete exposed to fire

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