e-ISSN: 2582-5208 International Research Journal of Modernization in Engineering Technology and Science Volume:02/Issue:09/September-2020
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EXPERIMENTAL ANALYSIS OF LIGHT WEIGHT POROTHERM BLOCKS IN SLABS J. Charles *1, R. Manikandan *2 *1M.E.,
Student, Structural Engineering , Agni College of Technology, Chennai, TamilNadu, India. *2Assistant
Professor , Department of Civil Engineering ,Agni College of Technology, Chennai, India.
ABSTRACT In a simply supported RCC slab the upper portion of the slab is subjected to compressive force and the lower portion is subjected to tensile force. Concrete performs well in compression force while its weak in tension , so the steel reinforcement is placed in tension zone The Filler slab made by porotherm blocks placed between steel bars and the concrete is put into the poured between the blocks. In this method less amount of concrete is used.The cement and steel usage is reduced to 45%. .Porotherm used structure is less hazardable during earthquake. Porotherm bricks used for roof slab and sunshades. It is very suitable for low income users. Flexural strength of the infill slab and RCC slab is done comparatively. Keywords – Porotherm block, Flexure strength, Compressive strength, Deflection.
I.
INTODUCTION
Porotherm blocks are low weight clay blocks. It is offering exceptionally fast, virtually dry construction, plus high strength and thermal efficiency. The Porotherm blocks evolved from hand made bricks into modern blocks. It is successfully used in many European countries for the past 30 years. These blocks are used in Europe to construct both residential and commercial structures. These blocks are manufactured as vertically perforated walling unit. These blocks are made from clay ,dried and fired. These blocks consist innumerable pores and gives thermal insulation and vapour permeability.
II.
MATERIALS
Shuttering: Innersize of slabs-1.5m*0.6m, made by wood. Laying of porotherm bricks : For porotherm slab: Brick name HP100 , (L,H,W) 400mm,100mm,200mm, placed in between shuttering ends ,spacing 140mm,4 number of blocks. Providing reinforcement: Porotherm slab: Cover of slab 10mm, 10mm dia,5 bar in shorter direction,2bar in longer direction. Rcc slab: Cover of slab 10mm,3 bar in longer direction,8 bar in shorter direction. Placing of concrete: Porotherm slab- Grade of concrete M30,placed over reinforcement and sides of porotherm bricks. Rcc slab- Grade of concrete M30,reinforcement provided in tension zone. Demoulding: After casting the slabs is kept for one day and shuttering are demoulded. Curing: For 28 days curing provided portable water used for curing.
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