This document discusses using crushed coconut shells as a partial replacement for coarse aggregate in concrete. The objectives are to find more economical construction materials, reduce solid waste by using coconut shells, and encourage the use of waste products in construction. Cubes will be cast with different percentages of coconut shell aggregate replacement (10%, 20%, 30%, 40%) and tested to analyze compressive strength and other physical properties compared to normal concrete. This has the benefits of increasing construction speed, promoting green construction, and producing more cost effective concrete while recycling agricultural waste.

2. Guided by
K.ANIL KUMAR sir
B.MUKUNDA RAO
A.VENKATA RAO
R.CHANDRADITYA
S.SRUJANA
B.UMA
M.DHARMA RAO
Presented by

3. The high cost of conventional building materials is a major factor
affecting housing delivery in world. This has necessitated research into
alternative materials of construction and analyzing flexural and compressive
strength characteristics of concrete produced using crushed, granular coconut
as substitutes for conventional coarse aggregate with full replacement using
M25 grade concrete. The main objective is to encourage the use of these
‘seemingly’ waste products as construction materials in low-cost housing.
It is also expected to serve the purpose of encouraging housing developers in
investing these materials in house construction. This project paper aims at
analyzing the compressive strength characteristics of concrete produced
using crushed, granular coconut as coarse aggregate with partial replacement
using M25 grade concrete. Cubes are casted, tested and their properties are
determined .
ABSTRACT

4. Coconut Shell (CS) are not commonly used in the construction
industry but are often dumped as agricultural wastes. Coconut is
grown in 92 countries with a global production of 51 billion nuts
of which India produces 9500kt of coconut. In India, industries
and informal sectors recycle about 15-20% of solid waste in
various building material. In developing countries, coconut shell
type waste can be used as a construction material. It has the
advantage of reduction of cost and it also serve as a mean of
disposal or say recycling of waste. If structural light weight
concrete can be developed from coconut shell, it would a great
achievement for construction industry. Coconut shells are more
suitable as low strength-giving lightweight aggregate when used
to replace common coarse aggregate in concrete production. In
the following paper the normal weight aggregate has been
replaced by coconut shell aggregate and cubes have been casted
to test their compressive strength and other physical properties.
INTRODUCTION

5.  To find economical solution for high cost construction material.
 To reduce the solid waste by using coconut shell as coarse
aggregate.
 To encourage the use of these seemingly waste products as
construction material
 To prepare the light weight concrete by using coconut shells
OBJECTIVES

6. OVER VIEW OF PROJECT
To evaluate the engineering properties
of coconut shell aggregate
To compare the properties of coconut
shell aggregate with conventional
aggregate

7. The materials used in this experiment were locally available
and these were Ordinary Portland Cement (O.P.C), sand as
fine aggregate, crushed granite and coconut shell both as
coarse aggregate. Potable water was used for mixing and
curing
Cement: Ordinary Portland cement 53 grade was used
Fine Aggregate: Naturally available fine aggregate from River
Coarse Aggregate: Crushed granite was used as coarse
aggregate of size 20mm and 10mm both.
Coconut Shell: In this work coconut shell was used as partial
replacement of coarse aggregate .
MATERIALS AND METHODS

8. Coconut shells before cutting
Coconut shells after cutting

9. M20,M35 & M50 Grade
Concrete
Mixing
40% CS 30%CS 20%CS 10%CS
Physical
properties
Compaction Factor , Slump
Compressive Strength
Flow Chart Of The Concrete Lab Process

10.  SLUMP TEST [freshly prepared sample]
 COMPACTION FACTOR TEST
 VEE-BEE CONSISTOMETER
STRENTH TESTS
 REBOUND HAMMER TEST [lab test on hardened concrete ]
 COMPRESSIVE STRENTH TEST [ lab test on hardened concrete ]
WORKABILITY TESTS
Tests to be performed with CONCRETE

11. M-25 grade of concrete was designed according to
I.S 10262-1982 method. The crushed granite
aggregates were replaced as 10%, 20%, 30%, and
40%. The test results were analyzed and compared
with control concrete that is made with
replacement of coarse aggregate.
IDEA OF THE PROJECT

12. 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
 production of light weight concrete
 producing economic concrete by reducing the cost
of material

13. Continued....
 Recycling and reusing waste effectively thus
protecting the environment from possible pollution
effect
 To introduce a new aggregate in the mix design
to lower the concrete density
 Eco friendly

14. THANK YOU