Compressive Strength and Light Transmissibility of Translucent Mortar Cube

ISSN (Online) 2456 -1304

International Journal of Science, Engineering and Management (IJSEM) Vol 5, Issue 4, April 2020

[1] Dalvinet K Varghese, [2]Aiswarya T, [3]Karthika M p,[4]Vidya K V [1][2][3][4] Student, Department of Civil Engineering, Sreepathy Institute of management and techonolgy, Palakkad, Kerala, India

Abstract: - Translucent concrete is an innovative idea in the field of a architecture .This paper is based on this translucent concrete in which optic fiber is used as a medium of light transmission in a concrete. The main advantage of translucent concrete is to reduce openings in a building mainly for air conditioned rooms. Translucent concrete helps to transmit light from side of the wall to another side using optic fibre. Here in this project translucent concrete is made by embedding epoxy resin rods instead of optic fiber and checking the compressive strength, light transmitting property and cost effectiveness of translucent concrete with epoxy resin tube by comparing optic fibre translucent concrete. To avoid the casting difficulty and to reduce the weight of the product coarse aggregate is removed and light transmitting mortar cubes are made. Here 1:2 mix proportion is used for making mortar cubes which have a compressive strength of first class brick. Embedding optic fibre and epoxy resin rods in mortar cubes increases the compressive strength of conventional mortar cubes. Epoxy resin not only act as a light transmitting medium but it also increases compressive strength of conventional mortar cube. It helps to utilize sunlight which make the building green and give aesthetical beauty to the building. This paper investigate whether epoxy resin translucent mortar cube is efficient than optic fibre translucent mortar cube.

Key words—Epoxy resin translucent mortar cube, Optic fibre translucent mortar cube

I. INTRODUCTION resin translucent mortar cube is efficient than optic fibre translucent mortar cube . Aron Losonzi a Hungarian Architect put forward the II. PROCEDURE innovative idea of transmitting light through the concrete and Materials used he named it as Litracon which was patented in 2003.Litracon is made by embedding 4% of optic fiber in the concrete To cast translucent mortar cube following materials are .Optic fibre is a light transmitting medium which make used. revolutionary change in the field of communication .But the high cost of optic fiber is a limiting factor for the using of 1) Cement: translucent concrete in a wide range. This paper is based on litracon which give aesthetical beauty to buildings and helps Portland Pozzolana Cement is used to make translucent in utilizing sunlight. The optic fibre which is costly and it is mortar cubes .PPC makes the concrete more impermeable very difficult to cast, because if optic fibre strands are not and denser as compared to OPC.PPC is less porous than properly handled there will be micro cracks in it which will OPC, making it even more resistant to chemical attack. Using badly effect light transmitting property. These disadvantages PPC eliminates surface cracks due to low heat of hydration. of optic fibre can be erased by providing epoxy resin tubes instead of optic fibre. To avoid the casting difficulty and to TABLE I: PROPERTIES OF CEMENT reduce the weight of the product coarse aggregate is removed and light transmitting mortar cubes are made. Properties Test Result To reduce the cost of the translucent concrete, translucent Standard consistency 33% mortar cubes are made by embedding epoxy resin rods. Initial setting time 60 min Epoxy resin is a cross linkable polymers made from monomers containing at least two strained ring groups called Fineness of cement 4.67% oxiranes. Specific gravity 3.28 The main objective of this paper is to find whether epoxy

International Journal of Science, Engineering and Management (IJSEM) Vol 5, Issue 4, April 2020

2) Fine aggregate: in plastic straws which have an inner diameter of 5mm.One M sand is used as fine aggregate. Manufactured sand or M of the plastic straw is sealed to prevent the leakage and the sand is a substitute of river sand. mixture of resin and hardener is poured through the other end using a syringe. After the hardening period of the mixture the TABLE II: PROPERTIES OF FINE AGGREGATE plastic straw is stripped off using a blade.

Properties Test Result E. Optic fibre translucent mortar cube Specific gravity 2.62 Bulking of M sand 73.68% Optic fibre translucent mortar cube is made by embedding 4% of optic fibre in mortar cube.1:2 mortar mix is poured in 3) Optic fibre the mould and compacted it by vibration. If proper handling is not done during compaction will result in microcracks Optic fibre of 1mm diameter is used to make optic fibre inside optic fibre strands which will adversely affect the light translucent mortar cube. Optic fibre is used as the medium the light transmission. for the transmission of light based on the principle of total internal reflection. F. Epoxy resin translucent mortar cube 4) Epoxy resin: Epoxy resin translucent mortar cubes are made in 0.33%, Epoxy resin and hardener is mixed in 3:1 proportion by 0.66%, 0.99%, 1.32%, 1.6% and 1.9% proportions. Epoxy weight. To prepare the mixture for making epoxy resin rods resin rods of 5mm are used. Compaction can be done with three part of epoxy resin is mixed with one part of hardener. tamping rod, because the is no chance for the formation of microcracks inside epoxy resin rods. B. Preparation of mould G. Curing of translucent mortar cubes Same mould is used to prepare optic fibre translucent mortar cube and epoxy resin translucent mortar cube. The 1) Optic fibre translucent mortar cube size of the mould used to cast these mortar cubes is 70 x 70 x Optic fibre translucent mortar cubes are cured by covering 70 mm. Ply wood is used as the material to prepare the it with wet gunny bags and water is sprinkled on it mould. A pair of opposite ply wood sheets of the mould is frequently. drilled with holes which are parallel to each other. The holes are arranged as rows and column, also they are equally 2) Epoxy resin translucent mortar cubes spaced. Epoxy resin mortar cubes are cured by two methods. The C. Fixing of mix proportion first method is to cure the cubes by immersing the cubes in the water ,which result in the formation of white patches on For casting translucent mortar cube 1:2 mix proportion is the epoxy resin translucent mortar cube. The second method adopted .For the application of translucent mortar cubes in of curing is by covering the cubes with wet gunny bags and load bearing wall the translucent mortar cubes should have a water is sprinkled on it frequently. minimum strength of first class brick. Conventional mortar cube of 1:2 mix proportion have a strength almost equal to the first class brick.

D. Casting of epoxy resin rods

The mixture for casting epoxy resin rods consist of epoxy resin and hardener which are in liquid state. When this mixture get harden it will acquire the shape of the container. This mixture reaches 95% of its full cure within 24 hours, and 100% of its cure within 72 hours. Epoxy resin is casted

International Journal of Science, Engineering and Management (IJSEM) Vol 5, Issue 4, April 2020

4% 12.67 Fig 1: Epoxy resin translucent mortar cubes cured by

immersing in water Optic fibre translucent mortar cube with 4% of optic fibre

gives compressive strength greater than the compressive strength of first class brick of strength 10.5 N/mm2.

2) Epoxy resin translucent mortar cube

TABLE IV: COMPRESSIVE STRENGTH OF CUBE CURED BY IMMERSING IN WATER

Proportion of epoxy 28 days compressive resin strength in N/mm2

Fig 2:Epoxy resin translucent mortar cubes cured by 0.33% 7.33 covering with wet gunny bags 0.66% 8 0.99% 6.67 1.32% 6 1.6% 5.33 1.9% 4.67

The compressive strength of epoxy resin translucent mortar cube which is cured by immersing in water is less than strength of conventional mortar cube and strength of first class brick.

TABLE V: COMPRESSIVE STRENGTH OF CUBE CURED BY COVERING WITH GUNNY BAGS Fig 3:white patches on epoxy resin translucent mortar

cube Proportion of epoxy 28 days compressive III. RESULT AND DISCUSSION 2 resin strength in N/mm A. Compressive strength of translucent mortar cube

Compressive strength of translucent mortar cube is done to 0.33% 13.33 check whether it can be used in load bearing walls.28 days 0.66% 23.33 compressive strength is checked for optic fibre and epoxy 0.99% 15.33 resin translucent mortar cubes. 1.32% 12 1.6% 10.67 The compressive strength of conventional mortar cube is 1.9% 8.67 2 after 28 days curing is 11.33 N/mm . The compressive 2 strength of first class brick is 10.5 N/mm . The compressive strength of epoxy resin translucent mortar which is cured by covering with wet gunny bags is 1) Optic fibre translucent mortar cube greater than compressive strength of conventional mortar

cube and first class brick. TABLE III : COMPRESSIVE STRENGTH OF OPTIC

FIBRE TRANSLUCENT MORTAR CUBE B. Lux meter test

Lux meter test is done to find out the intensity of light Proportion of optic 28 days compressive passing through the translucent cube. Lux meter is used to fibre used strength in N/mm2 measure light intensity. 1) Optic fibre translucent mortar cube

International Journal of Science, Engineering and Management (IJSEM) Vol 5, Issue 4, April 2020

IV. CONCLUSION TABLE VI: LIGHT INTENSITY OF OPTIC FIBRE TRANSLUCENT MORTAR CUBE In this paper mortar cubes with optic fibre and mortar cubes containing epoxy resin is studied. Optic fibre Proportion of optic fibre Light intensity(Lux) translucent mortar cube made by embedding 4% of optic fibre .Epoxy resin translucent Mortar cubes are made with 4% 52 six different proportions of epoxy resin ,they are 0.33%,0.66%,0.99%,1.32%,1.6% and 1.9% . Embedding 2) Epoxy resin translucent mortar cube optic fibre and epoxy resin rod increases the compressive strength of conventional mortar cube. Optic fibre translucent TABLE VI: LIGHT INTENSITY OF OPTIC FIBRE mortar with 4% of optic fibre gives a compressive strength of 2 TRANSLUCENT MORTAR CUBE 12.67 N/mm after 28 days of curing. Maximum compressive strength of epoxy resin translucent mortar cube after 28 days Proportion of epoxy Light intensity curing by immersing in water and covering the cubes with resin (Lux) wet gunny bags is 8 N/mm2 and 23.33 N/mm2 .Epoxy resin used translucent mortar cube with 0.66% epoxy resin rod gives 0.33% 65 maximum compressive strength. Epoxy resin translucent 0.66% 71 mortar cube which is cured by immersing in water gives less 0.99% 75 compressive strength than curing by covering the cubes with 1.32% 87 gunny bags. When epoxy resin added to conventional mortar 1.6% 102 cube ,it will increases the compressive strength to a limit and 1.9% 109 after that limit the strength of cube decreases. When the epoxy resin rods placed in the top portion of the mortar cube C. Cost analysis gives maximum compressive strength which is greater than placing the epoxy resin rods at middle or bottom of the The optic fibre translucent mortar cube with 4% optic fibre mortar cube. This is because when epoxy resin rods placed at and epoxy resin with 0.66% epoxy resin is taken to evaluate top portion of the cube which is near to the loading surface, cost effectiveness of epoxy resin translucent mortar cube. epoxy resin rod act as a elastic material and take up the load. Amount of optic fibre required to make optic fibre Epoxy resin translucent mortar cube is more efficient in translucent mortar cube is 620.78 Rs and amount of epoxy transmitting light than optic fibre translucent mortar cube. resin required to make epoxy resin translucent mortar is 1.8 Cost of epoxy resin translucent mortar cube is less than optic Rs. The cost of optic fibre translucent mortar cube and epoxy fibre translucent mortar cube. So epoxy resin translucent resin translucent mortar cube of 50 cm2 is 622.23 Rs and mortar cube is efficient than optic fibre translucent mortar 3.672 Rs respectively. It is clear that due to the high cost of optic fibre, cost of the optic fibre translucent mortar cube is cube.Epoxy resin translucent mortar cube with have a higher compare to epoxy resin translucent mortar cube. We compressive strength greater than the strength of first class can conclude that epoxy resin translucent mortar cube is brick , so it can be used in load bearing walls and also used in more economical than optic fibre translucent mortar cube. part ion walls.

D. Pattern fixation REFERENCES Three patterns are mainly evaluated. When epoxy resin rod placed at top portion of mortar cube ,it gives a compressive [1] AbhishekPathade, Karthik Nair, NishadTharwal, strength of 21.33 N/mm2 after 7 days curing. When epoxy Ravi Tiwarekar, Member,(March 2016),Light resin rod placed at middle portion and bottom portion, it Transmitting Concrete, International Research 2 2 gives a compressive strength of 17.33 N/mm and 18 N/mm Journal of Engineering and Technology, Volume respectively. When the epoxy resin rods place in top portion 03, Issue 03. of the epoxy resin translucent mortar cube gives maximum [2] AbhishekTiwari and Parmod Saharan (July compressive strength .This is because when load applied on 2016),Study of Behaviour of Translucent Concrete the cube, epoxy resin rod behave as a elastic material and using Rice Husk and Steel Fibre, SSRG take the load. International Journal of Civil Engineering,volume 3, Issue 7.

International Journal of Science, Engineering and Management (IJSEM) Vol 5, Issue 4, April 2020

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