International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 11 Issue: 07 | July 2024
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p-ISSN: 2395-0072
ANALYSIS OF THE UTILISATION OF HIGH-DENSITY POLYETHYLENE BUBBLES IN DECK SLAB Md. Sharuf Ali1, Mr. Mohammed Jalaluddin2 1 PG Student, Structural Engineering, Department of Civil Engineering, Lords Institute of Engineering and
Technology, Himayath Sagar, Hyderabad, Telangana, India.
2Assistant Professor, Department of Civil Engineering, Lords Institute of Engineering and Technology, Himayath
Sagar, Hyderabad, Telangana, India. ------------------------------------------------------------------------***---------------------------------------------------------------------. Bubble deck slabs operate by replacing nonAbstract: Bubble Deck technology is a revolutionary
structural concrete in the centre of the slab with highdensity polyethylene (HDPE) spheres, creating a network of hollow holes. These perforations successfully lower the slab's self-weight while yet providing adequate strength to withstand applied stresses. This groundbreaking method not only saves materials, but also allows for longer spans, better thermal performance, and higher building efficiency.
approach in the field of construction that incorporates the use of high-density polyethylene (HDPE) bubbles within deck slabs. This innovative method significantly alters the traditional composition of deck slabs, replacing the concrete in the middle of the slab with HDPE balls. The Bubble Deck slab is a biaxial hollow core slab where the concrete placed in the central portion of the slab acts as a filler material and does not carry structural load. The diameter of the HDPE ball depends upon the depth of the slab, and the ratio of bubble diameter to the depth of the slab plays a vital role in the structural integrity of the slab. One of the key advantages of this technology is the reduction in the slab’s self-weight. The use of spherical balls to fill the voids in the middle of a flat slab reduces 35% of a slab’s self-weight compared to a solid slab of the same thickness. This reduction in weight does not affect the slab’s deflection behaviour and bending strength, maintaining the structural integrity of the slab
The reduction in dead load obtained using bubble deck technology has a variety of advantages. First, longer clear spans are achievable without the need for additional supporting columns or beams, resulting in more adaptable interior spaces and simpler architectural solutions. Second, the lowered weight of the slab decreases foundation requirements, which can lead to cost savings and a lower environmental impact. Furthermore, the air gaps within the spheres provide better thermal insulation, resulting in enhanced energy efficiency and occupant comfort. This function is especially beneficial in locations with frequent temperature variations.
Key words: Deck slab, HDPE bubble, Structural Integrity, Spherical balls, Fill the Voids.
1.INTRODUCTION
While the concept of voided slabs is not new, using HDPE bubbles in bubble deck slabs offers a lightweight and easy approach that addresses some of the limitations of prior voided slab systems. The technology has been successfully applied in several building projects, including residential, commercial, and industrial structures, demonstrating its practicality and potential of transforming our approach to slab design and construction.
1.1 Introduction to Bubble Deck Slab Bubble deck slab is an innovative and environmentally friendly building technology that integrates hollow plastic spheres, or "bubbles," into the structure of a reinforced concrete slab, transforming its shape. This method reduces the slab's total weight while maintaining structural integrity and load-bearing capability. Bubble deck slabs are an alternative to standard solid slab construction that addresses major concerns like as material consumption, construction time, and environmental effect.
1.2 Invention of Bubble Deck Technology In the 1990s, Jorgen Breuning developed a method for connecting air space and steel within a voided biaxial concrete slab. Bubble Deck technology creates air holes with recycled industrial plastic spheres while giving strength through arch action.
Bubble deck slabs operate by replacing nonstructural concrete in the centre of the slab with highdensity polyethylene (HDPE) spheres, creating a network of hollow holes. These perforations successfully lower the slab's self-weight while yet providing adequate strength to withstand applied stresses. This breakthrough method not only conserves materials, but also allows for longer spans and superior thermal
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The concept of voided or bubble deck slabs dates back several decades, with different iterations and modifications leading to the revolutionary construction
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