Forta-Fi® Fiber-Reinforced Asphalt Concrete Mix Design (FRAC) or also known as Super Fiber Mix Design (SFM) and Asphaltic Concrete + (AC+) is a mixture of hot asphalt and high tensile strength synthetic fiber blend formulated to reinforce asphalt mixes.
WHAT IS CHARACTERISTICS OF SYNTHETIC FIBER
WHAT IS SUPER FIBER MIX DESIGN (SFM) ADVANTAGES
TABLE 1
Forta-Fi® Fiber-Reinforced Asphalt Concrete Mix Design (FRAC) is a mixture of continuously graded aggregate infused with FORTA-FI® fiber additives
and binder material (bitumen). FRAC offers the following benefits (Refer TABLE 1):
i) Improved resistance to rutting
ii) Improved resistance to fatigue cracking
iii) Improved material properties – tensile strength, resilient modulus, stability, stiffness
and resistance to permanent deformation
iv) Improved adhesion of binder to aggregates and also aggregates to aggregates.
v) Increased durability of the asphalt
HOW SUPER FIBER MIX DESIGN USED IN CONSTRUCTION
1. Mill & pave 110: 50mm SFM14, 60mm AC28
2. Spraying of Tackcoat
3. Fiber distribution on Paver
4. Temperature check on Paver
5. Temperature check before compaction must be less than 130C
6. Rolling pattern follows Normal AC Mix (2-2-10-2 or 2-2-12-2)
Assalamualaikum everyone, we are 6 members of civil engineering students from Universiti Teknologi Malaysia. We were give a task to share knowledge of Civil Engineering Material with community. So, we choose blog posting as a good platform that easy to all can reached.
The blog content will be interesting to anyone in the construction industry as the purpose is to advance and promote construction & civil engineering sectors around the globe.
WHY SELECTION OF CONSTRUCTION MATERIAL IS IMPORTANT?
The
choices for construction materials are practically infinite. Understanding the
specific properties of these materials allows for the most efficient and
productive application, resulting in many years of satisfaction. Civil
engineers must be well-versed in the primary building materials. There are many
types of civil engineering materials such as concrete, premix and steel. Also, due to growing interest in sustainable development and various incentives provided by the Government of Malaysia, the key players in the construction industry are motivated more than ever before to use materials that are sustainable or in such a way that their environmental impact is minimal. Therefore, by knowing about the material properties make the structure can be last long, economical, and minimize the environmental impact.
Steel is an alloy of iron and about 2% or less carbon. Pure iron is soft, but carbon greatly hardens it. Several iron-carbon constituents with different compositions or crystal structures exist such as austenite, ferrite, pearlite, cementite, and martensite where they can be combine in complex mixtures depending on temperature and carbon content.
The
steel industry has about 2000 grades of steel developed of which 1500 grades
are high grade steels. There is still potential in developing new grades of
steel with varying properties. The large number of grades gives steel the
characteristic of a basic production material. However, the degree to which it
maintains its dominant position will depend on if steel can exploit its
potential by developing new higher grades and adaptable grades.
HOW STEEL CAN BE APPLY IN CONSTRUCTION?
There are many different types of construction materials in Malaysia and all over the world. In modern construction, steel structures used for almost every type of structure. For example, like heavy industrial building, high-rise building, equipment support system, infrastructure, bridge, tower, airport terminal, heavy industrial plant, and pipe rack. Therefore, the ultimate choice of the construction material depends on the kind of building you are constructing. It is important to choose a suitable material because it affects the quality of the building and the success of the overall project as well.
Steel structure is a metal structure where the components connect with each other to carry loads and provide full rigidity. This structure is reliable and requires less raw materials than other types of structure like concrete structure and timber structure because of the high strength grade of steel.
WHAT IS THE BENEFITS OF STEEL?
It is reusable and endlessly recyclable.
Contains at least 25% recycled steel.
Enables energy efficiency in buildings and
construction projects.
Strong, requiring fewer beams and providing
more usable open space.
Light, requiring reduced foundations.
Less material implies resource saving and a
lesser impact on the environment.
Flexible in combination with other materials.
Earthquake resistant due to steel’s ductility.
Fast on-site build for prefabricated buildings.
Durable.
WHAT IS THE DIFFERENCE BETWEEN STEEL AND TIMBER STRUCTURE?
Steel Structure
Timber Structure
Stronger
Not lasting
Lightweight and flexible in terms of design
Easy damage
Better fire resistance
Easily exposed to fire
Sections come in desired form and length and are easily transported
Green material in concrete is made with
concrete wastes which are eco-friendly so called as Green concrete. Green concrete is made of new raw materials -
namely fly ash, recycled concrete aggregates and aluminium can fibres. Fly ash
is a waste product from coal power plants and is commonly disposed of in ponds
and sent to landfills.
In 2009, the Malaysian government launched the
green building index (GBI) to encourage the construction of buildings using
green technology, and introduced incentives for owners to obtain the GBI
certificate for new or existing buildings. There have also been efforts to
reduce air pollution and concrete has an important role to play because a
significant amount of the world's carbon emissions stems from cement and
concrete production. Therefore, it is important to develop green concrete that
can be used in buildings and structures.
WHY USE
OF GREEN CONCRETE
1. To Decrease the Demand for Conventional
Material:
As
discussed above the construction industry growth is to fast in recent year and
consumption of concrete is also increased to a large extent. Because of this
and limited source of mining leading to a shortage of conventional construction
material like cement, aggregate. Therefore, to reduce the demand for regular
construction material the green concrete is a better alternative.
2. To Reduce Co2 Emission:
In conventional concrete, we use a material whose production
process involves the emission of a large amount of co2 in the environment.
Whereas green concrete uses waste eco-friendly material which emits too low co2
in the environment.
3. To Recycle and Reuse the Materials:
As construction of any structure involve a huge amount of materials
and also it produces a large amount of construction waste also. This waste
never utilized for any other work. So, the green concrete has the idea to
recycle and reuse this waste material for making concrete.
ADVANTAGES
OF GREEN CONCRETE
1.There is no need to change
the manufacturing process
2. It is made from waste and recycled
materials like fly ash, GGBS (Ground Granulated Blast Furnace Slag, artificial
aggregates, etc. in the concrete.
3. It decreases CO2 emission and helps in reducing
the environmental pollution.
4. It has good thermal and acid resistance.
5. It solves the problem of recycling and
disposal space required for industry waste material as it is made from residue
waste material.
6. It solves the problem of recycling and
disposal space required for industry waste material as it is made from residue
waste material.
7. Green concrete compressive and split
tensile strength is better with some materials compared to conventional
concrete.
8. It contributes to reducing the
consumption of cement overall.
9. It is economical compared to conventional
concrete.
10. It offers better workability than
conventional concrete.
SAMPLE MATERIAL USE IN GREEN CONCRETE
CONCLUSION
When
it comes to building structures, developers and contractors have the advantage
of choosing from a variety of materials to use. Generally, the decision on
material choice depends on several factors including cost and performance for
specific applications.
Due
to growing interest in sustainable development and various incentives provided
by the Government of Malaysia, the key players in the construction industry are
motivated more than ever before to use materials that are sustainable or in
such a way that their environmental impact is minimal.
Hence
green concrete can be choosing to consume less energy and becomes economical.
Uses of green concrete will not only reduce the emission of CO2 in environment
and environmental impact but also economical to produce.
Moreover,
green concrete designed for strength and performance during service-life of
buildings or structures. It also contributes to GBI score,
has lower cement/carbon footprint per unit of concrete produced and
has potential for commercialization by providing developers and contractors
with an alternative concrete that is environmental-friendly, in line with the
National Green Technology Policy.
