A study of steel wire mesh reinforced high performance geopolymer concrete slabs under blast loading

“…However, slabs additionally reinforced by steel fibers showed much less visible cracks and good structural performance with a maximum central deflection of 1 mm. Meng et al in another study [ 25 ] tested steel wire mesh reinforced GC slabs under blast loads. The results indicated that incorporating wire mesh reinforcement in GC enhanced the slab’s performance against blast loads.…”

Section: Introductionmentioning

confidence: 99%

Geopolymer Concrete with Lightweight Fine Aggregate: Material Performance and Structural Application

et al. 2022

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Limited information and data are available on the material and structural performance of GC incorporating lightweight fine aggregate. In this research, three types of lightweight fine materials were utilized to partially replace sand volume of GC. These lightweight materials were rubber, vermiculite, or lightweight expanded clay aggregate (LECA) and they were used in contents of 20%, 40%, 60%, and 100%. The variables were applied to better investigate the efficiency of each lightweight material in GC and to recommend GC mixes for structural applications. The concrete workability, compressive strength, indirect tensile strength, freezing and thawing performance, and impact resistance were measured in this study. In addition, three reinforced concrete slabs were made from selected mixes with similar compressive strength of 32 MPa and then tested under a 4-point bending loading regime. The results showed that using LECA as sand replacement in GC increased its compressive strength at all ages and all replacement ratios. Compared with the control GC mix, using 60% LECA increased the compressive strength by up to 44%, 39%, and 27%, respectively at 3, 7, and 28 days. The slabs test showed that partial or full replacement of GC sand adversely affected the shear resistance of concrete and caused premature failure of slabs. The slab strength and deflection capacities decreased by 9% and 30%, respectively when using rubber, and by 23% and 59%, respectively when using LECA, compared with control GC slab. The results indicated the applicability of GC mix with 60% LECA in structures subjected to axial loads. However, rubber would be the best lightweight material to recommend for resisting impact and flexural loads.

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“…Remennikov et al [16] computed different RC slabs under non-uniform blast loading. Meng et al [17] found that the novel green construction material, high-performance alkaliactivated geopolymer concrete slab combining the steel wire mesh reinforcement helps in increasing the blast resistance capacity. Based on the literature, it has been observed that the spall radius in the concrete slab is influenced by the charge weight, see Table 1 however the information about the behavior of the slab was found to be limited and the study requires detailed investigations.…”

Section: Literature On the Experimental Studiesmentioning

confidence: 99%

A review on the performance of reinforced concrete structures under blast loading

Senthil¹,

Gupta²,

Rupali³

et al. 2020

JSEAM

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An explosion on the elevated structures caused by terrorist activities or manmade events can induce significant deformations in the Civil Engineering structures. Therefore, it is necessary to review the response of the structural behavior such as reinforced concrete slab, reinforced concrete beams, and columns. On the basis of this objective, a detailed literature review is conducted to understand the scope for protecting such structures and the structural behavior under blast loading. Based on the detailed literature survey, the investigations about the behavior of conventional reinforced concrete columns and slab initiated in 2005 however, the behavior of reinforced concrete beam was focused since the year 2010. Also, the literature reveals that the investigations on structural elements using analytical techniques are limited in comparison to experiments and simulations. In addition to that, the response of the structural elements was predicted and the trend was calibrated and fitted logarithmically with the experimental results. The predicted spall diameter in the reinforced concrete slab is 0.95 m corresponding charge weight of 100 kg however the influence of spalling was found to be negligible after the 100 kg of charge weight. The predicted spall length in the reinforced concrete beam is 1.6 m corresponding charge weight of 100 kg and the effect may be negligible after 100 kg of charge weight. The predicted deflection in the reinforced concrete columns is 30 mm corresponding to a peak reflected impulse of 1000 MPa-ms, whereas the deflection was found to be negligible after the 1000 MPa-ms of peak reflected impulse.

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A study of steel wire mesh reinforced high performance geopolymer concrete slabs under blast loading

Cited by 41 publications

References 34 publications

Shear behaviour of ambient cured geopolymer concrete beams reinforced with BFRP bars under static and impact loads

Shear behaviour of ambient cured geopolymer concrete beams reinforced with BFRP bars under static and impact loads

Geopolymer Concrete with Lightweight Fine Aggregate: Material Performance and Structural Application

A review on the performance of reinforced concrete structures under blast loading

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