An Experimental Study on Coir Fly Ash Bricks

An Experimental Study on Coir Fly Ash Bricks

C. Mohanasundaram, Assistant Professor

M. Gopikrishnan, P. Gopinath, K. Sampathkumar, R. Sivashankar Nandha College of Technology,Erode

Abstract:-

• The aim of this study is to investigate the effect of coir fibre on physical properties of bricks

• The objectives of this work are:

1. To find out variation in compressive, tensile and flexural strengths of coir bricks using fibre strands and raw fibre meshes at varying fibre contents and to compare it with that of flyash bricks

2. To determine the influence of shape of fibres on strength of bricks

Introduction:

• The construction industry is revolutionizing in two major ways. One way is the development of construction techniques, such as using automated tools in construction.

• The other is the advancement in high- performance construction materials, such as the introduction of high strength concrete. Among these high- performance materials, fibre reinforced concrete (FRC) is gradually gaining acceptance from Civil Engineers.

• In recent years, research and development of fibres and matrix materials and fabrication process related to construction industry have grown rapidly. Their advantages over other construction materials are their high tensile strength to weight ratio, ability to be moulded and potential resistance to environmental conditions, resulting in potentially low maintenance cost.

Methology:

Title collecton

Proportioning of materials

Proportioning of materials

Collection of materials

Casting of flyash bricks

Curing of flyash bricks

Curing of flyash bricks

Drying of flyash bricks

Testing of flyash bricks

Testing of flyash bricks

Result analysis and conclusion

WET WEIGHT OF FLY ASH BRICKS:

3

COMPRESSION TEST ON BRICKS:

k

k

MOISTURE CONTENT:

moisture content =wet weight dry weight

% dry weight

= 3.56-3.10 x100

3.10

= 14.38%

STRESS IN BRICKS:

Control bricks = Average load

Area

= 0.205

110 *230

= 7.15N/mm2

Bricks with Load

0.5% coir = Area

= 6.82N/mm2

Bricks with = Load

0.75% coir Area

= 0.138 110*230

= 6.24 N/mm2

Bricks with = Load 1% coir Area

= 0.145 110*230

= 5.92 N/mm2

SHAPE AND SIZE FACTOR TEST:

In this test bricks are randomly selected and measured along lengthwise ,heightwise and widthwise.

This test is done to identify strong edges.

Bricks are closely viewed to check if its edges are sharp and straight.

A good quality brick should have bright and uniform colour throughout.

CONCLUSION:

Comparing the experimental results with the results of normal flyash bricks it is concluded that, the compressive strength of flyash was not too decreased.

These are hand-made bricks so the strength may vary as the bricks are molded manually by using rough estimations.

Further research is needed to analyze the influence of coirs on the compressive strength of flyash bricks.

REFERENCES:

1. ajid Ali, Nawawi Chouw (2012),Experimental investigations on coconut- fibre rope tensile strength and pullout from coconut fibre reinforced concrete, Construction and Building Materials, 41, 681690

2. Reis J.M.L (2005),Fracture and flexural characterization of naturalfiber- reinforced polymer concrete, Construction and Building Materials 20 (2005) 673678

3. Majid Ali, Anthony Liu, HouSou, Nawawi Chouw (2011),Mechanical and dynamic properties of coconut fibre reinforced concrete Construction and Building Materials 30 (2011) 814825