Performance of Hybrid Steel Fibers Reinforced Concrete Subjected to Air Blast Loading

Abstract

This paper presents the results of the experimental data and simulation on the performance of hybrid steel fiber reinforced concrete (HSFRC) and also normal reinforced concrete (NRC) subjected to air blast loading. HSFRC concrete mix consists of a combination of 70% long steel hook end fibre and also 30% of short steel hook end fibre with a volume fraction of 1.5% mix. A total of six concrete panels were subjected to air blast using plastic explosive (PE4) weighing 1 kg each at standoff distance of 0.3 meter. The parameters measured are mode of failure under static and blast loading and also peak overpressure that resulted from detonation using high speed data acquisition system. In addition to this simulation work using AUTODYN was carried out and validated using experimental data. The experimental results indicate that hybrid steel fiber reinforced concrete panel (HSFRC) possesses excellent resistance to air blast loading as compared to normal reinforced concrete (NRC) panel. The simulation results were also found to be close with experimental data. Therefore the results have been validated using experimental data.

Revisiting high strength concrete using common admixtures

“…Due to this condition, the structure can resist damage and this will decrease overall cost for maintenances. Proper design and production are the main factor that will influence the quality of the HSC [10][11][12][13][14][15][16][17][18][19][20][21][22].…”

“…Due to this condition, the structure can resist damage and this will decrease overall cost for maintenances. Proper design and production are the main factor that will influence the quality of the HSC [10][11][12][13][14][15][16][17][18][19][20][21][22].This research will revisit the development of HSC. The used of HSC in the construction industry, especially in the construction of bridges, skyscrapers, mega structures and many other type of structures that demand the used of high strength concrete is the main motivation for this technology [3].…”

“…Besides that, the usage of HSC will be more economical for life-cycle cost performance. Further, it will reduce the use of natural resources such as cement and aggregates due to smaller structural elements.The objectives of this research are to design and test HSC mix using state-of-the-art technique in order to achieve mean compressive strength of 40 MPa or more in 7 days, and to investigate the effects of using silica fume (SF) and super plasticizers (SP) on compressive strength of concrete [1].Finally, the effect of carbon fiber in concrete mix will be tested.Based on the literature, the pillars of practical mix design for HSC are low water-cement ratio, used of super plasticizers, application of cement with a high strength [6] potential and application of pozzolans and in particular silica fumes [14,21]. HSC can be produced with water-cement ratios in the range of 0.22-0.40 and the resulting 28-days compressive strength are in the range of 60 to 130 MPa.…”

Properties and Behavior of Geopolymer Concrete Subjected to Explosive Air Blast Loading: A Review

“…As known, concrete has a brittle properties materials. Then, the testing under blast loads was conducted to ensure the reliability of concrete structure to be proof against blast [13]. Limiting the damage concrete structures also aggressively design to protect the civilian buildings in a war or terrorist attack area [14].…”

“…It is because air overpressure waves radiate outward to the air surrounding then lower the energy waves concentration [17]. The extreme energy from detonation can create impulsive impact and in consequence, many researchers proposed the high strength of the concrete structures [12][13][14][15]26]. Therefore, this paper reviews on the geopolymer concrete performance towards explosive blast loading.…”