7,8.applications of Uhpfrc

Innovative Integration of RMC & PSC in Metro Construction
APPLICATIONS OF UHPFRC
1)Taloja Creek Bridge
Old deteriorated superstructure replacement alternative
Completed Taloja Bridge

Taloja bridge located in Maharashtra is primarily reinforced concrete
cement structure.
Dimensions of bridge
COEP TECHNOLOGICAL UNIVERSITY

Top width – 2.9m

Bottom width – 2m
Height – 3m
Bottom prestressing - 7 Cables of 27k15

Top Prestressing - 2 Cables of 7k15
2) LATUR BRIDGE
A first-of-its-kind bridge in the country, built with ultra-high-performance fibre

reinforced concrete using cost effective and durable technology. It is 111-meter-long
bridge, constructed in Masalga of Latur.
3) CHANDANI CHOWK BRIDGE

(Reconstruction of Chandani chowk bridge)
Handling of U girders
4)KAZIRANGA PROJECT

The KAZIRANGA project is in Assam which aims to construct 34- kilometer elevated
road.90% of the elements are precast including piles. UHPFRC's high strength,
durability, and resistance to environmental factors make it suitable for infrastructure
projects in sensitive areas like Kaziranga National Park. Additionally, its ability to be
molded into intricate shapes can aid in designing structures that blend seamlessly
with the natural surroundings while ensuring long-term sustainability.

5)MUMBRA BRIDGE OVERLAY
In case of the Mumbra bridge, applying UHPFRC as an overlay can help extend its
service life, improve load-bearing capacity, and enhance resistance to corrosion and
wear. Additionally, its thin profile and ability to bond well with existing concrete make
it an efficient solution for bridge rehabilitation projects.
6) KASHEDI GHAT PROJECT

This project is on Mumbai- Goa Highway.

Erection works in progress at Kashedi Ghat project

7)SAMRUDDHI EXPRESSWAY
4 Bridges of 52m span

In the construction of four bridges with a 52-meter span along the Samruddhi
Expressway, UHPFRC is utilized for various components such as bridge decks,
girders, and support structures. The superior mechanical properties of UHPFRC,
including high compressive strength, low permeability, and excellent durability, make
it well-suited for such applications, ensuring the longevity and structural integrity of
the bridges under heavy traffic loads and adverse environmental conditions.
Additionally, incorporating UHPFRC in these bridges potentially reduce maintenance
requirements and increase their resistance to corrosion and other forms of
deterioration, ultimately enhancing the overall performance and lifespan of the
infrastructure.

OTHER
APPLICATIONS :
SOME
INNOVATIVE
PRODUCTS
DEVELOPEMENT

8) FACADES
PSC can be used to create architectural features such as Facades. These features
can be precast off-site and then installed on the building, reducing construction time
and costs.
9) RETAINING WALL

10) ANTI–CLIMB WALLS

11) Precast driven piles for solar project

FAILUARS IN UHPFRC
Ultra-High Performance Fiber-Reinforced Concrete (UHPFRC) is a fascinating

material, but it has its challenges. Failures in UHPFRC can occur due to various
reasons such as improper mix design, inadequate curing, poor placement
techniques, and structural design flaws. Additionally, issues like fiber pullout,
cracking, and durability concerns can contribute to failures in UHPFRC structures.
1)Shear Failure

Shear failure in Ultra-High Performance Fiber-Reinforced Concrete (UHPFRC)

occurs when the applied shear stress exceeds the shear capacity of the material,
leading to a sudden loss of structural integrity.
The detailed explanation of shear failure in

UHPFRC:
Shear Capacity of UHPFRC:
UHPFRC typically exhibits high compressive strength, tensile strength, and ductility,
but its shear behavior can vary depending on factors such as fiber type, fiber
content, mix design, and structural configuration.
The presence of high-strength fibers in UHPFRC enhances its shear resistance by
bridging cracks and distributing the applied load more effectively.
Shear Failure Mechanisms:

Shear failure in UHPFRC can occur through various mechanisms, including diagonal
tension failure and shear sliding failure along cracks.
Diagonal tension failure typically occurs in beams and slabs subjected to
concentrated loads or high shear forces, leading to inclined cracks that propagate
diagonally from the load application point.
Shear sliding failure occurs when shear stresses exceed the interfacial bond
strength between adjacent layers of UHPFRC or between UHPFRC and other
materials, leading to sliding along the crack interfaces.
Factors Influencing Shear Failure:

The shear capacity of UHPFRC is influenced by various factors, including the type
and aspect ratio of fibers, fiber orientation, fiber volume fraction, matrix properties,
and presence of reinforcement.
High-strength fibers with high aspect ratios and effective bond characteristics
contribute to enhanced shear resistance by resisting crack propagation and
providing additional reinforcement across potential failure planes.
Proper fiber orientation and distribution within the UHPFRC matrix are essential to
ensure effective load transfer and shear transfer mechanisms.
The presence of conventional reinforcement, such as steel bars or prestressing
tendons, can also improve the shear capacity of UHPFRC elements by providing
additional confinement and resistance against shear forces.

2) Improper Mix Design:

UHPFRC requires precise proportions of materials, including cement, silica fume,
fine and coarse aggregates, water, and high-strength fibers (such as steel or
synthetic fibers).
Improper mixing or incorrect ratios can lead to compromised mechanical properties,
such as reduced strength and durability.

3) Improper Curing:
Proper curing is essential for UHPFRC to achieve its full strength and durability
potential.
Improper curing conditions, such as insufficient moisture or temperature control
during the curing period, can result in decreased strength and increased
susceptibility to cracking
4) Cracking:
Cracking in UHPFRC can occur due to various factors, including shrinkage, thermal
gradients, and external loading.
Uncontrolled cracking can compromise the structural performance and durability of
UHPFRC elements, allowing ingress of moisture and aggressive agents, which can
accelerate deterioration.
5) Fiber Pullout:
UHPFRC relies on high-strength fibers to enhance its tensile and flexural properties.
However, if the bonding between the fibers and the matrix is insufficient, fibers may
pull out under loading, leading to reduced structural integrity.
Proper fiber orientation, distribution, and surface treatment are essential to ensure
effective fiber-matrix interaction and prevent pullout.


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Innovative Integration of RMC & PSC in Metro Construction

Completed Taloja Bridge

COEP TECHNOLOGICAL UNIVERSITY

Top width – 2.9m

Bottom prestressing - 7 Cables of 27k15

A first-of-its-kind bridge in the country, built with ultra-high-performance fibre

3) CHANDANI CHOWK BRIDGE

COEP TECHNOLOGICAL UNIVERSITY

(Reconstruction of Chandani chowk bridge)

COEP TECHNOLOGICAL UNIVERSITY

COEP TECHNOLOGICAL UNIVERSITY

5)MUMBRA BRIDGE OVERLAY

6) KASHEDI GHAT PROJECT

COEP TECHNOLOGICAL UNIVERSITY

Erection works in progress at Kashedi Ghat project

COEP TECHNOLOGICAL UNIVERSITY

COEP TECHNOLOGICAL UNIVERSITY

COEP TECHNOLOGICAL UNIVERSITY

COEP TECHNOLOGICAL UNIVERSITY

COEP TECHNOLOGICAL UNIVERSITY

10) ANTI–CLIMB WALLS

COEP TECHNOLOGICAL UNIVERSITY

11) Precast driven piles for solar project

COEP TECHNOLOGICAL UNIVERSITY

Ultra-High Performance Fiber-Reinforced Concrete (UHPFRC) is a fascinating

COEP TECHNOLOGICAL UNIVERSITY

Shear failure in Ultra-High Performance Fiber-Reinforced Concrete (UHPFRC)

The detailed explanation of shear failure in

Shear Failure Mechanisms:

Factors Influencing Shear Failure:

COEP TECHNOLOGICAL UNIVERSITY

2) Improper Mix Design:

COEP TECHNOLOGICAL UNIVERSITY

COEP TECHNOLOGICAL UNIVERSITY

COEP TECHNOLOGICAL UNIVERSITY

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