Bubble Deck Slab as an Innovative Biaxial Hollow Slab – A Review

Abstract

Slab is the most important member in any building structure which consume large amount of concrete. The slab self-weight is large due to large consumption of concrete in producing slab. Therefore, bubble deck slab is an innovative and newly designed biaxial hollow slab system that had been introduced in order to overcome this problem. Bubble deck slab is a revolutionary method which was developed by Jorgen Bruenig from Denmark in the 1990s. The bubble deck slab had been designed and constructed with plastic hollow bubbles in the middle part of slab to eliminate the concrete which does not perform any structural function and at the same time reducing the slab self-weight. Thus, the self-weight of bubble deck slab can be reduced about 30-50% than conventional concrete slab; that can reduce the loads acting on columns, walls and foundations. Finally, the use of bubble deck slab can give many benefits as compared to conventional concrete slab such as improve the structural performance of slab, reduce the materials and cost, efficiency and faster construction time, and it is also a green product. The aim of this paper is to give some of the reviews from previous studies related to bubble deck slab.

Biaxial Hollow Slab Under Seismic Load

“…The concept is to fill the hollow part of the slab to reduce the weight using a spherical ball made of recycled plastic material. This volume reduction is in line with the reduction in CO2 gas emissions from concrete because 1 kg of recycled plastic can replace up to 100 kg of concrete and reduce the slab's weight by up to 50% (Quraisyah et al, 2020). This structure, which has been applied abroad, uses a flat slab system.…”

“…BHS replaced concrete with bubbles in the middle of the thickness slab (Figure 1). This type of slab can reduce concrete volume by 30% -50% from conventional slabs (Quraisyah et al, 2020). Biaxial hollow slabs consist of 3 (three) important components, namely concrete, reinforcement, and filler balls (Tiwari and Zafar et al, 2016).…”

Optimal Design of Bubble Deck Concrete Slabs: Sensitivity Analysis and Numerical Homogenization

“…In order to reduce the dead weight of the structure, in the late 1990s, Jorgen Bruenig designed a deck slab with plastic hollow bubbles in the center of the structural element. The new design was intended to eliminate concrete, which has no structural function, and thus reduce the dead weight of the slab [ 7 , 8 , 9 , 10 , 11 , 12 ].…”

“…According to researchers [ 7 , 8 , 9 , 10 , 11 , 12 , 17 , 18 , 19 , 20 , 21 , 22 , 23 ], ceilings with HDPE inserts have significantly reduced mass. Concrete usage is reduced as 1 kg of recycled plastic replaces 100 kg of concrete.…”

“…Concrete usage is reduced as 1 kg of recycled plastic replaces 100 kg of concrete. Thus, the dead weight is reduced by up to 50% [ 7 , 8 ]. The bubble diameter varies between 180 mm to 450 mm.…”