PROJECT SYNOPSIS PRESENTATION ON

USE OF COCONUT SHELLS AND IRON FIBERS FOR THE PRODUCTION OF LIGHTWEIGHT AND

ECONOMIC CONCRETE

BY: PROJECT GUIDE KARVI TRIPATHI(1212200063) SHRUTI CHANDRADEEPANSHU KESARWANI (LECTURER)(1212200048)

INTRODUCTION AND IDEA

PRODUCTION OF LIGHT WEIGHT CONCRETE PRODUCING ECONOMIC CONCRETE BY REDUCING

THE COST OF MATERIAL ECO-FRIENDLY INCREASING STRENGTH OF CONCRETE BY IRON

FIBERS RECYLING AND REUSING WASTE EFFECTIVELY.

THUS PROCTECTING THE ENVIRONMENT FROM POSSIBLE POLLUTION EFFECT

TO INTRODUCE A NEW AGGREGATE IN THE MIX DESIGN TO LOWER THE CONCRETE DENSITY

J.P. RIES STUDIED THAT LWA (LIGHT WEIGHT AGGREGATE):- Plays an important role in today’s move towards sustainable concrete. lightweight concrete contributes to sustainable development by lowering transportation, optimising structural efficiency that results in a reduction in the overall building material used, conserving energy, reducing labour demands and increasing the survive life of the structure.

LITERATURE REVIEW

AMARNATH YERMALLA (2012):- studied the strength of coconut shell replacement and studied the transport properties with coconut shells as coarse aggregate replacement. They concluded that-Increase in coconut shell percentage reduced the density of concrete.With coconut shell percentage increased the 7 days strength gain also increased with corresponding 28 days curing strength.

VISHWAS P. KULKARNI (2013):- studied that aggregate provide volume at low cost comprising 66% to 78% of concrete. Conventional coarse aggregate, gravel and fine aggregate, sand will be used in concrete as control. While the natural material coconut shell will be investigated to replace the aggregate in concrete.

OBJECTIVE OF THE PROJECT Study of the effect of using coconut shells and iron fibers in

concrete and its benefits. Improve the overall durability and long-term performance of

concrete structures. An approach towards the use of the alternative materials as

concrete admixture. Reducing pollution by using a waste material like coconut

shells as an aggregate. Comparative cost study between plain concrete and concrete

added with coconut shells and iron fibers.

BENEFITS OF USING COCONUT SHELLS AND IRON FIBERS

Increases the Compressive Strength. Reduction in economy of construction. Increases the tensile Strength . Reduction in time of construction. Improves the Ductility of the mix. Provides the Flexural Strength . Reduction in density of concrete.

COLLECTION OF AGGREGATE (COCONUT SHELLS) AND IRON FIBRES

RESHAPING COCONUT SHELLS IN APPROPRIATE FORMAND SIZE 

TREATMENT OF COCONUT SHELLS AND IRON FIBRES FOR THE CONCRETE MIX

DESIGING A CUBE (approx. 150mm x150mm x 150mm )

TESTING OF SAMPLE AT DIFFERENT PROPORTION OF COCONUT SHELLS AND IRON FIBRES FOR VARIOUS STRENGTH PARAMETERS.

TESTING MATERIAL USED IN THE PROJECT SUCH AS CEMENT, SAND,AGGREGATES,COCONUT SHELLS, IRON FIBERS AND CONCRETE

PROPOSED METHODOLOGY

RESHAPING COCONUT SHELLS

They are collected from local fields and sun dried for 1 month.

Then the shells are cleared from the fibers and crushed manually.

Then it is washed and allowed to dry under ambient temperature for another 1 month.

The partical size of the coconut shell ranges from 5 to 20 mm.

The surface texture of shell is fairly smooth on concave side and rough on convex side.

Material testing will include the testing of four materials

CEMENT AGGREGATE AND COCONUT SHELLS SAND IRON FIBERS

MATERIAL TESTING

Tests to be performed with CEMENT

CONSISTENCYFINENESS OF CEMENT INITIAL AND FINAL SETTING

TIME SPECIFIC GRAVITY COMPRESSIVE STRENGTH OF

CEMENT

Testing For Aggregate And Coconut Shells

SIEVE ANALYSIS WATER ABSORPTION TEST SPECIFIC GRAVITY LOS -ANGELES ABRASION TEST AGGREGATE IMPACT VALUE TEST AGGREGATE CRUSHING VALUE TEST BULK DENSITY DETERMINATION

Testing for Sand

WATER ABSORPTION OPTIMUM MOISTURE CONTENT AND DRY

DENSITY TEST SPECIFIC GRAVITY BULKING OF SAND

Testing of Iron Fiber

SPECIFIC GRAVITYLENGTH

Tests to be performed with CONCRETE

SLUMP TEST (for freshly prepared sample)

REBOUND HAMMER TEST (lab test on hardened concrete)

ULTRASONIC PULSE VELOCITY TEST(lab test on hardened concrete)

After performing the above test on different material for the concrete we will form a concrete mixture of M25.

Mix proportion for M25 grade of concrete is 1:1:2(cement, fine aggregates, coarse aggregates)

Since we are using coconut shell as a course aggregate, so we will mix coconut shell with the coarse aggregate in fix percentage such as 10%, 25%, 50% and 75%.

E.g. If we are making M25 grade concrete by 1 kg of cement, 1kg of fine aggregate and 2 kg course aggregate. And in this we are using 10% of coconut shell as an course aggregate then we will mix 1800 gm of coarse aggregate and 200 gm of coconut shell.

Procedure before casting

We will use iron fiber in the concrete mix to provide cracking, abrasion, impact, fatigue and durability to the concrete.

Now we will go for casting the concrete.

Casting Concrete blocks of size 150mm x 150mm x150mm will be cast

The concrete in the cube must be fully compacted with compacting bar or vibrating hammer or table. After 24 hours these moulds are removed and test specimens are put in water for curing.

For curing, the specimen is kept submerged in fresh water until taken out for testing after 7, 28 and 45 days. The temperature of water must be 27 + 2o C.

Minimum 3 to 2 specimens of each mix proportion containing different percent of coconut shells (10%, 25%, 50% and 75% by weight of cement) and iron fibers will be casted.

COMPRESSIVE STRENGTH TESTING

The compressive strength of concrete with different mix proportions is performed after intervals as-

7 days test 28 days test 45days test (according to IS 516-1959).

CHECK FOR THE ECONOMY OF THE PROJECT

The Cost Of The Concrete Block Cast Using Coconut Shells And Iron Fibers Will Be Compared With That Of Normally Cast Block To Check For The Economy Of The Project.

A Comparison Between The Cost Of Material Used Will Be Done

ADVANTAGES OF PROJECT

It increases the speed of construction. It promotes green construction. Coconut shells are more resistant towards crushing,

impact and abrasion. There is no need of treating coconut shells before usage

except for water absorption. Coconut shells satisfy the requirement of ASTM C 330 Iron Fibers increase resistance to cracking, abrasion,

impact, fatigue and durability.

The Implementation Areas in Project

Re-designing of structural elements (columns and foundations) by using the results of the project. Cost estimation of the design will be made and compared with plain concrete.

THANK YOU