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.

In construction industry nowadays, self-compacting concrete (SCC) is a concrete technology innovation which gives more benefits over conventional concrete. SCC was invented to improve concrete durability without using any vibrator while placing it into formwork. In order to conserve natural sand, quarry dust (QD) as a waste and sustainable material has been incorporated to replace fine aggregate in SCC. In this study, conventional concrete and quarry dust in self-compacting concrete (QDSCC) mixes consist of 0%, 10%, 20%, 30%, 40% and 50% QD were prepared. The workability test was conducted to determine the performance of fresh concrete and ensuring all the QDSCC properties follow the acceptance criteria for SCC. Meanwhile, the hardened concrete specimens were water cured for 7, 28 and 60 days to conduct water absorption test. This research aim is to determine water absorption of incorporating sustainable QDSCC. Thus, it resulted that 50% of QDSCC has achieved the lowest water absorption of QDSCC as compared to other dosages. Finally, sustainability in concrete technology can be promoted by incorporating QDSCC.

Self-compacting concrete (SCC) a latest innovation in concrete technology is being regarded as one of the most promising developments in the construction industry due to numerous advantages over conventional vibrated concrete. SCC is an innovative construction material that can be placed into forms without mechanical vibration which able to flow and consolidate under its own weight. The utilisation of quarry dust (QD) as waste and eco-friendly material in SCC was investigated in this study. Conventional vibrated concrete mix was designated as OPC while SCC mixes with different percentages of QD which are 0%, 10%, 20%, 30%, 40% and 50% that had been used to replace sand as partial fine aggregate. The high-range superplasticizer had been used as the chemical admixtures that can enhance the rheological properties of all SCC mixes. The performance of conventional vibrated concrete and QD in SCC in terms of its workability was investigated while the durability performance was investigated by conducting water absorption test and water permeability test for curing periods of 7, 28 and 60 days were considered in this study. 50% of QD is the optimum dosage that can be used in order to achieve the lowest water absorption meanwhile 40% of QD is the optimum dosage that can be used in order to achieve the lowest water permeability for QD in SCC mix. In conclusion, the innovation material by utilising QD in SCC improve the workability and durability performance of concrete.