Experimental study on bubble deck slab using polypropylene. Also explore the seminar topics paper on skyscraper with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech, be, mtech students for the year 2015 2016. Heatingcooling through piping in slab report from cowi for heating, savings up to 30 % for cooling, savings up to 85 % in total, energy savings of 3050 % are realistic european conditions. Bubble deck concrete slab manmade materials concrete. The following fig 9 shows fixing partially manufactured bubble deck slab. All voided biaxial slabs incorporate an array of rigid void formers which contain air within the voids. Tests were conducted with bubbledeck slabs of 230 and 450 mm. The principal characteristic is that hollow plastic spheres. Bubble deck slab system concrete precast concrete scribd. Schematic design basic principle as a general guide for project scoping purposes the maximum achievable spans for each bubbledeck slab depth is. Bubble deck is the invention of jorgen bruenig in the 1990s, who developed the.
Bubbledeck design guide for compliance with bca using. The technology enables creation of highinsulating and energy effective slab structures. Experimental study of behaviour of voided bubble concrete slab. Bubble deck technology uses less concrete by filing the. Bamberg physical fitness center in germany is the first project where the bubbledeck.
The ultimate load value obtaining bending tests were upto. Schematic design basic principle as a general guide for project scoping purposes the maximum achievable spans for each bubbledeck slab depth is usually determined by deflection limitations. Materials steel the steel rinforcement of fy60 strength or higher. The bubbledeck is a twoway hollow deck in which plastic balls serves the. View and download powerpoint presentations on bubble deck slab ppt. Bubbledeck biaxial hollow floor slab system, a technology that increases large span lengths and makes floors lighter by reducing the weight while maintaining the. Compared to traditional solid slabs, the reduced selfweight of biaxial. Find powerpoint presentations and slides using the power of, find free. Also explore the seminar topics paper on bubble deck slab with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech, be, mtech students for the year 2015 2016. Meshed model of bubble deck slab with elliptical balls. Bending stresses in the bubble deck slab are found to be 6. Tetra mesh is used in bubble deck slab due to irregular geometry of the slab.
Search cloud seminar report on bubble deck slab important. The highly dense polyethylene hollow spheres put back the ineffective concrete in the center of the slab, thus decreasing the dead. Void formers inside the flat slab eliminates at least 30% of a slab s dead weight. Although the strengthened bubble deck had low deflection when compared to an unstrengthened bubble deck slab. Bubble deck slab is a hollow, flat slab that spans in two directions, in which plastic balls are incorporated to replace, and therefore eliminate the concrete in the middle of a conventional slab which does not contribute to its structural performance. Hollow core a comparison was made between bubble deck and hollow core deck. It comprises a hollow, flat slab that spans in two directions, in which plastic balls are incorporated to replace, and eliminate the concrete in the middle of a conventional slab which does not contribute to its structural performance. Bubble deck slab with spherical and elliptical balls were modelled using tetra mesh, which is a four noded mesh. Investigations according to eurocodes have concluded that voided biaxial slabs may be modelled like solid slabs. Performance of structural behaviour of bubble deck slab. Bubble deck slab using pvc materiel to increase the strength of the slab. The main structural consequences of bubbledeck system.
Bubble deck slab is a method of virtually eliminating all concrete from the middle of a floor slab, which is not performing any. Explore bubble deck slab with free download of seminar report and ppt in pdf and doc format. Bubble deck technology by gayathri rajendran on prezi. A voided biaxial slab is created with the same capabilities as a solid slab, but with considerably less weight due to the elimination of superfluous concrete. It is a method of virtually eliminating all concrete from the middle of a floor. Civil engineering seminar topics with abstract and report. Void formers in the middle of a flat slab eliminates 35% of a slabs selfweight removing constraints of high dead loads and short spans. Bubble deck technology uses less concrete by filing the slab. This slab is invented by jorgen breuning in denmark 1990s. The bubble deck slab carried the stress of about 30. Apr 30, 2012 bubble deck technology uses less concrete by filing the slab with beach balls this is a really clever idea that takes out all the stuff in the middle that you dont really need, and replacing it. With bubbledeck, completely open facades is possible with long cantilevers.
Bubbledeck precast concrete slabs are suitable for use in all building types especially open floor designs such as commercial, educational and institutional buildings. The basic effect of the bubbles is the weight reduction of the deck. The results are shown for the deck thickness 230 mm type 1 and 455 mm type 2. A bubble deck slab floor is a flat slab floor, therefore without beams and column heads.
Abstract the invention of a new type of hollow core slabs was a breakthrough at the turn of 20th and 21st centuries. The bubbledeck is a twoway hollow deck in which plastic balls serves the purpose of. Nov 24, 2017 bubble deck slab the best solution for above two problems is bubble deck slab. Skyscraper seminar report, ppt, pdf for civil engineering. A voided slab is a concept that simply removes the excess concrete from the expensive part of the structure slab. A bubble deck slab has a twodimensional arrangement of voids within the slabs to reduce selfweight. The mesh is fabricated in two forms meshed for lateral support and digonal griders for vertical support of the. Assistant professor,department of civil engineering, mbits. Voided slabbubble deck technology the first hollow concrete block was designed in 1890 by harmon s. Bubbledeck north america llc advancing concrete design. Pdf bubble deck slab is a method of virtually eliminating all concrete from the middle of a floor slab, which is not performing any structural. It was invented by jorganbreuningof denmark about 20 years ago. Experimental study on bubble deck slab using polypropylene balls. Bubbledeck is the patented integration technique of linking air, steel, and concrete in a twoway structural slab.
Bubbledeck design guide for compliance with bca using as3600. This is considered an advantage over oneway ribbed slabs, which must be calculated as an array of beams. Combination of this with a flat slab construction approach. The stress and deformation results of bubble deck slabs werecompared with conventional slabby. Since the weight of the structure reduced, this type of structure can useful to reduce earthquake damage. A study on structural behaviour of bubble deck slab using. The slab panels filigree are typically eight feet 2. Find powerpoint presentations and slides using the power of, find free presentations research about bubble deck slab ppt. Incorporation of recycled plastic bubbles as void formers permits 50% longer spans between columns. Test report biegung from the technical university of darmstadt germany enclosure a2. Bubbledeck is compared to a solid deck both practically and theoretically.
It is now gaining popularity both in europe and in asia. The voided slab system quaddeck rests in weight reduction through plastbau technology. The average shear strength was 76% of a solid slab bubbledeck tests and reports summary. High density polythene hdpe hollow spheres are placed in the center of slab by replacing the. Report from the eindhoven university of technology the netherlands enclosure a1. This is a really clever idea that takes out all the stuff in the middle that you dont really need, and replacing it with air. The end result eliminates the use of concrete that has little carrying effect while maintaining the twoway span biaxial strength. Bubble deck slabs can therefore make a useful contribution towards the thermal insulation achieved by the overall construction. After 10 years of experimenting, palmer patented the design in 1900. The behavior of bubble deck slabs is influenced by the ratio of bubble diameter to slab thickness.
An overview neeraj tiwari1 sana zafar2 1,2madan mohan malviya university of technology, gorakhpur abstractthe bubble deck slab is a newly designed biaxial concrete floor slab system. In this method, the voids are assembled in steel cages and then concrete is poured to a height part way up the voids. Meshed model of bubble deck slab with spherical balls fig 4. Voided slab bubble deck technology the first hollow concrete block was designed in 1890 by harmon s. With integration of pt cables, which fit easily in the slab, spans of 50 times the deck thickness is possible. The comparative study of lightweight slab solutions in.
Its a method of virtually eliminating all concrete from the middle of a floor slab, which is not performing any structural function, thereby dramatically reducing structural dead weight. These void formers are most commonly made of plastic such as highdensity polyethylene, and may use recycled materials. Although the technology can be adjusted to suit almost any floor slab arrangement our experience. Bubble deck slab is a method of virtually eliminating all concrete from the middle of a floor slab, which is not performing any structural function, thereby dramatically reducing structural dead. Structural behaviour of bubble deck slabs and its application. A study on behavior of bubble deck slab using ansys rinku john.
Concrete slab also known as hollowcore slab bubble deck floor system is a revolutionary biaxial conrete floor system invented by jrgen breuning. Bubble slab is a biaxial hollow core slab invented in denmark. Explore skyscraper with free download of seminar report and ppt in pdf and doc format. The end result eliminates the use of concrete that has little carrying effect. Bubble deck is one brand of plastic void system which uses a precast filigree method to form voided slabs. Analysis of bubble deck slab design by finite element method. The bubble deck slab floor system can be used for storey floors, roof floors and ground floor slabs. Issn 2348 7968 a study on behavior of bubble deck slab. It was concluded that bubble deck slab obtaining a muchimproved flexural capacity and stiffness and a shear capacity of at least 70% from that of a solid slab realizing 3050% concrete economy in comparison with the solid slab. The mesh is fabricated in two forms meshed for lateral support and digonal griders for vertical support of the bubbles. Bubble deck slab seminar report, ppt, pdf for civil. Fe modeling, including nonlinear cracked section analysis is used to calculate the deflection using normal structural concrete with a youngs modulus secant ecru, multiplied by 0.
Workshop on application of new seismic code for highway bridges irc. New ways in concrete construction the biaxial hollow deck. Latest civil engineering seminar topics with abstract and report with ppt for civil engineering b. Differences can be due to the fact that the tests only were considered in a onewayspan fig. Bubble deck slab uses hollow spherical or elliptical balls made by recycled plastic.
The behaviour is exactly as for a solid deck, both for short and longterm situations. Bubble deck slab seminar report, ppt, pdf for civil engineering. Bubbledeck slab version slab thickness bubbles span multiple bays cantilever max length span single bays completed slab mass site concrete quantity bd230 230 o 180 5 8. Bubble deck technology uses less concrete by filing the slab with beach balls this is a really clever idea that takes out all the stuff in the middle that you dont really need, and replacing it. Case study bubble deck slab the geometry of the bubble deck slab is defined by spheres of a certain size, which are.
Hollow plastic balls are inserted into the slab and held in place by reinforcing steel. A construction method by eliminating concrete from the neutral axis of a floor slab that is structurally not performing, as a result dramatically reducing in dead weight. Bubble deck slab the best solution for above two problems is bubble deck slab. The voided slab system is based on the expanded polystyrene panels that are supported and reinforced with two integral steel beams moulded into the product from end to. Bubble deck slab is a method of virtually eliminating all concrete from the middle of a floor slab, which is not performing any structural function, thereby dramatically reducing structural dead weight. Concrete slab also known as hollowcore slab bubble deck floor system is a revolutionary biaxial conrete floor system invented by jrgen breuning materials steel the steel rinforcement of fy60 strength or higher.
Use custom search function to get better results from our thousands of pages use for compulsory search eg. Voided biaxial slabs are reinforced concrete slabs bubblfdeck which voids reduce the amount of concrete. Bubbledeck design guide for compliance with bca using as3600 and ec2 prepared by. Void formers inside the flat slab eliminates at least 30% of a slabs dead weight. Civil engineering seminar topicsfree download engineering. Pdf structural behavior of bubble deck slab researchgate. Apr 08, 2017 the bubble deck slab floor system can be used for storey floors, roof floors and ground floor slabs. Bubble deck slab is composed of three main materials they are steel, plastic spheres and concrete. Report from the eindhoven university of technology the. A bubble deck slab is a technique of realistically disposing the concrete in the center of the slab, which does not perform any structural role, thus significantly reducing the dead weight of the. This new prefabricated construction technology is recently. The entire carrying capacity of such combined slabs is thereby fully. So the results of experiment shown thatbubble deck slab can withstand 80% of stress when compared with conventional slab.