IJSRSET162547 | Received : 10 Sep 2016 | Accepted : 27 Sep 2016 | September-October-2016 [(2)5: 151-154]
© 2016 IJSRSET | Volume 2 | Issue 5 | Print ISSN: 2395-1990 | Online ISSN : 2394-4099
Themed Section: Engineering and Technology
151
Flexural Strengthening of RC beam using Fabric Reinforced
Cementitious Matrix (FRCM)
Meera S Prasad
*1
, Gopika Moorthy
2
*
1
Civil Engineering (M Tech), Kerala Technological University, Kottayam, Kerala, India
2
Civil Engineering (Asst. Professor), Saintgits College of Engineering, Kottayam, Kerala, India
ABSTRACT
The advancement of alternative materials and methods for structural rehabilitation is of critical importance to the
safety and preservation of the world’s habitable heritage. Infrastructure decay caused by premature deterioration of
buildings and structures has led to the investigation of several process for repairing or strengthening purposes. One
of the challenges in strengthening of concrete structures is selection of a strengthening method that will enhance the
strength and serviceability of the structure while addressing limitations such as constructability, building operations
and budget. For strengthening RC elements, use of FRP system has become a common technique. But FRP
strengthening technique has some limitations and which are related to the epoxy matrix used to embed and bond the
fibres. Thus substituting epoxy matrix with cementitious matrix appeared to be the most reasonable solution to
improve the overall performance. This new generation of composite system is known as ‘FRCM’ (Fabric
Reinforced Cementitious Matrix), which consist of a dry fabric in a cementitious matrix. Due to their superior
performance at high temperature, better compatibility with the substrate and improved durability, FRCM systems
are a good alternative to FRP system. To present the previous efforts made to develop FRCM as an effective method
for strengthening of structures, various journals have been reviewed. This report deals with the study of flexural
strengthening of concrete and RC members with the help of various journal reference. It also includes the
effectiveness of FRCM with respect to number of confining layer and tensile strength of cementitious matrix. Thus
FRCM system are a viable option for flexural and shear strengthening of concrete and RC members.
Keywords: Rehabilitation, deterioration, FRCM, dry fabric.
I. INTRODUCTION
Composite materials are the result of combining basic
materials into new material systems that have improved
properties over the constituent materials. For that reason
research of novel composite materials results in
advances in the engineer's ability to deliver improved
product designs. Fabric-reinforced cementitious matrix
(FRCM) composite systems differentiate themselves for
fiber reinforced polymer (FRP) composite systems in
that the matrix is brittle, thus exhibiting a more complex
mechanical behavior. FRCM is a new development in
cementitious composites designed specifically for the
structural repair and rehabilitation industry. FRCM
systems are currently being introduced in the structural
repair and rehabilitation industry as a new effective
strengthening technology. Due to their superior
performance at high temperature, better compatibility
with the substrate, and improved durability FRCM
systems are a good alternative to FRP systems.
II. METHODS AND MATERIAL
1. Material Properties and Mix Design
A. Mix Design
Mix proportions for M70 grade concrete was designed.
In general, there are number of methods like Indian
Standard method, ACI method etc are available for
designing normal strength concrete mixes. For
designing High Strength Concrete(HSC) mixes, there