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Alvarez, Ereen

Amoroso, JenineBanaban, Carlo

Evaluation of Jute Fiber asConcrete Additive and

Reinforcement


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Introduction Concrete is the most widely used construction

material in this modern period

It has a very high compressive strength but has a very

low tensile strength

fiber reinforcement was introduced to improve theperformance of concrete

Jute is one of the most affordable natural fibers and is

second only to cotton in amount produced

Chapter 1 Background


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Objectives

Main Objective:

The main objective of this research project is to

evaluate the jute fiber as a conrete additive and

reinforcement.

Sub-main Objectives:

To study the importance of fiber-reinforced concrete in

the field of civil engineering

To determine the properties of jute and how it acts asa reinforcement in concrete.

To determine the advantages and disadvantages of

jute as a fiber reinforcement in concreteChapter 1 Background


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Conceptual Framework

Input

-Characteristics of

Jute Fiber(Physical,

Chemical)

-Advantages and

Disadvantages of

Jute Fiber as

Concrete Additive

Process

-Compressive

Strength Test using

UTM

Output

-Concrete

Cylinder with

Jute fiber as

additive.

Chapter 3 Research Methodology


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Research Design

By Experimentation and Research

Objectives are centered on the evaluation of jute

fiber as concrete additive.

7

th

and 14

th

day strength tests.



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Collection of Data

Primary Data Secondary Data

Experimentation using

MapuasUniversal

Testing Machine

Review of Related

Literature



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Properties of Jute Fiber

Physical

High tenacity (3-4gm/den)

Low elongation (1.7% break)

Specific gravity (1.5) Moisture regain (13.75%)

Dimensional Stability (Good)

Low thermal conductivity

Chemical Easily damaged by hot

dilute and concentrated cold

acids Damaged by strong alkali

Chapter 4 Data Analysis


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Procedure

Design concrete mix using ACI Method.

With required compressive strength of 30Mpa,

Computed values for water, cement, gravel, and

sand are:Cement 2.65kg

Sand 4.95kg

Gravel 4.29kg

Water 1.28kg



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Procedure

Mix the water, sand, cement, gravel and jutefiber properly.

Put the concrete mix inside the cylinder mold.



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Procedure

Wait 3 days for concrete mix to harden, removefrom mold then place it in the water drum

Test the 7thand 4thday compressive strength

using Universal Testing Machine

Use the formula equation S28 = S7 + 2.5

to solve for 28thday strength

S7



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Results and Discussion

day Max Stress

(MPa)

Break

Stress(Mpa)

7th 18.52 15.93

14th 18.22 17.54


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Results and Discussion The addition of the jute fiber made the mixing of

concrete difficult, the workability of concrete was

affected

jute fiber greatly absorbs the water in the concrete

mixture thus, the mixture clumps up and this preventsthe uniform grain formation of the concrete

the Max stress for the 7th day and 14th day test are

close to each other with values of 18.52 and 18.22

Mpa, respectively For Break stress for the 7th day and 28th day test,

there is a more noticeable change from 15.93 Mpa to

17.54 Mpa

Our computed 28

th

day strength was 29.27 Mpacom ared to the 30 M a re uired



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Factors Affecting our Results: errors in measuring the amount of ingredients

Errors in mixing technique

Varying temperature of lab environment



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Conclusion

The researchers therefore conclude that the JuteFiber is not an effective Concrete Reinforcement.

Recommendation Test the tensile strength

Make sure that the computation and mixture of the

ingredients are right.

Use the 28thday strength

Chapter 5

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