Behaviour of Two Way Reinforced Concrete Slab at Elevated Temperature

Natarajan, Babu; Haridharan, M. K.; Natarajan, C.

doi:10.1007/978-81-322-2187-6_173

Cited by 1 publication

(1 citation statement)

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“…Also, many industrial installations such as furnaces, industrial chimneys, floors below boilers, and kilns, in which the concrete is exposed to sustained elevated temperatures [1,2]. Slabs are the most structural members affected by elevated temperatures due to the large area of their surface that is exposed to heat relative to its thickness [3,4].…”

Section: Introductionmentioning

confidence: 99%

Impact of Heating on Structural Performance of Voided Two-Way Reinforced Concrete Slabs

Ismael¹,

Hameed²

2023

IJDNE

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Voided concrete slabs have emerged as a good alternative to solid slabs in many applications due to their excellent advantages. Although these slabs have a good thermal insulation ability, they have a disadvantage represented by their low fire resistance, this defect may affect the structural performance of bubbled slabs subjected to elevated temperatures more than that of the solid slabs. Since there is a considerable lack of knowledge about this effect, this paper presents an empirical exploration on the impact of exposure to elevated temperature on the structural performance of voided reinforced concrete two-way slabs. The empirical plan includes construing and testing eight voided reinforced SCC slabs subdivided into two groups to study the effect of the exposure to different elevated temperature degrees and the exposure period to the elevated temperature. The outcomes reveal that increasing the temperature from 100 to 400℃ makes the first crack of the voided slabs decreases from 9.4% to 35.2%, the ultimate load decreases by 10.7% to 38.2%, and the ductility ratio decreases from 7.1% to 28.6% respectively, while increasing the exposure period from 1hr to 4hrs. leads to decreasing the cracking load from 35.2% to 62.8%, the ultimate load from 38.2% to 63.2%, and the ductility ratio decreases from 28.6% to 38.1% respectively. Also, the results show that it is necessary to avoid using this type of slab in buildings exposed to high temperatures exceeding 100℃, significantly when the exposure period exceeds one hour.

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Section: Introductionmentioning

confidence: 99%