Research Articles | Challenge Journal of Structural Mechanics

Flexural behavior of sustainable reactive powder concrete bubbled slab flooring elements

Ashraf Abdulhadi Alfeehan, Hassan Issa Abdulkareem, Shahad Hameed Mutashar



Voided slabs are reinforced concrete slabs in which voids allow to reduce the amount of concrete. The bubbled deck slab is a new and sustainable biaxial floor system to be used as a self-supporting concrete floor. The use of voided slabs leads to decrease the consumption of materials and improve the insulation properties for enhancing the objectives of sustainability. This study presents an investigation into the flexural behavior of sustainable Reactive Powder Concrete RPC bubbled slab flooring elements. Six one-way slabs were cast and tested up to the failure. The adopted variables in this study are: the volumetric ratio of steel fibers, type of slab; bubbled or solid, placing of reinforcement and thickness of slab. The effect of each variable on the ultimate load, deflection and strain has been discussed. The results show that increasing the percent of steel fibers from 1% to 2% in solid and bubbled slabs decreases the deflection by (18.75%) and (50%) respectively. As well as, the deflection increases by (41%) for bubbled slab compared to the solid slab. The slabs reinforced with top and bottom steel meshes show less deflection than slabs reinforced by only bottom steel mesh.


reactive powder concrete; voids; bubbled slabs; sustainability; flooring elements

Full Text:



ASTM C494 (2004). Standard Specification for the Use of Super Plasticizer. American Society of Testing and Materials, Pennsylvania.

ASTM C1240 (2005). Standard Specification for the Use of Silica Fume as a Mineral Admixture in Hydraulic Cement Concrete. Mortar and Grout. Vol. 04.02., American Society of Testing and Materials, Pennsylvania.

BS 882 (1992). Specification for Aggregates from Natural Sources for Concrete, British Standard Institution.

Clough GW, Chameau JL, Carmichael C (2006). Sustainability and the University. Presidency, 9(1), 30-38.

Cole RJ, Nigel H, Ikaga T, Nibel S (2005). Building Environmental Assessment Tools: Current and Future Roles, In World Sustainable Building Conference.

Fuchs AC (2006). Technical Paper: BubbleDeck Span Guide. Bubble Deck Voided Flat Slab Solutions.

Iraqi Specification No. 5 (1984). Portland Cement, Ministry of Planning, Central Organization for Standardization and Quality Control.

Iraqi Specification, No. 45 (1984). Aggregate from Natural Sources for Concrete and Construction, Ministry of Planning, Central Organization for Standardization and Quality Control.

Klein D (2006). Structural Engineers, Sustainability and LEED. American Society of Civil Engineers.

Lee WL, Burnett J (2008). Benchmarking energy use assessment of HK-BEAM, BREEAM and LEED. Building and Environment, 43, 1882–1891.

Marais C (2009). Design Adjustment Factors and the Economical Applications of Concrete Flat-Slabs with Internal Spherical Voids in South Africa. M.Sc. Thesis, University of Pretoria.

Mosley WH, Bungey JH (2012). Reinforced Concrete Design, third edition, Macmillan.

Ochsendorf J, Norford LK, Brown D, Durschlag H, Hsu SL, Santero ALN, Swei O, Webb A, Wildnauer M (2011). Methods, Impacts, and Opportunities in the Concrete Building Life Cycle. Massachusetts Institute of Technology Concrete Sustainability Hub, Cambridge.

Therresa MA, Erron JP, Donald LM (2008) .Ultra High-Performance Concrete for Michigan Bridges Material Performance Phase-I, Center for Structural Durability. Michigan Technological Transpiration Institute.

Yunsheng Z, Wei S, Sifeng L, Chujie J, Jianzhong L (2008). Preparation of C200 green reactive powder concrete and its static dynamic behaviors. Cement and Concrete Composites, 30(9), 831–838.


  • There are currently no refbacks.