Res Final Pres
-
Upload
eng-alvarez -
Category
Documents
-
view
218 -
download
0
Transcript of Res Final Pres
-
8/13/2019 Res Final Pres
1/15
Alvarez, Ereen
Amoroso, JenineBanaban, Carlo
Evaluation of Jute Fiber asConcrete Additive and
Reinforcement
-
8/13/2019 Res Final Pres
2/15
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
-
8/13/2019 Res Final Pres
3/15
-
8/13/2019 Res Final Pres
4/15
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
-
8/13/2019 Res Final Pres
5/15
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
-
8/13/2019 Res Final Pres
6/15
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.
Chapter 3 Research Methodology
-
8/13/2019 Res Final Pres
7/15
Collection of Data
Primary Data Secondary Data
Experimentation using
MapuasUniversal
Testing Machine
Review of Related
Literature
Chapter 3 Research Methodology
-
8/13/2019 Res Final Pres
8/15
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
-
8/13/2019 Res Final Pres
9/15
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
Chapter 4 Data Analysis
-
8/13/2019 Res Final Pres
10/15
Procedure
Mix the water, sand, cement, gravel and jutefiber properly.
Put the concrete mix inside the cylinder mold.
Chapter 4 Data Analysis
-
8/13/2019 Res Final Pres
11/15
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
Chapter 4 Data Analysis
-
8/13/2019 Res Final Pres
12/15
Results and Discussion
day Max Stress
(MPa)
Break
Stress(Mpa)
7th 18.52 15.93
14th 18.22 17.54
-
8/13/2019 Res Final Pres
13/15
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
Chapter 4 Data Analysis
-
8/13/2019 Res Final Pres
14/15
Factors Affecting our Results: errors in measuring the amount of ingredients
Errors in mixing technique
Varying temperature of lab environment
Chapter 4 Data Analysis
-
8/13/2019 Res Final Pres
15/15
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