Experimental Shear Study on Reinforced High Strength Concrete Beams Made Using Blended Cement

Updata:01-01-1970

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By:Brijesh Singh, VIKAS PATEL, P N Ojha, Amit Trivedi, V V Arora

DOI: https://doi.org/10.30564/jaeser.v5i1.4064

Abstract:
With the increased application of High Strength Concrete (HSC) in
construction and lack of proper guidelines for structural design in India,
behavioral study of high strength concrete is an important aspect of
research. Research on the behavior of HSC reinforced beams with concrete
strength more than 60 MPa has been carried out in the past and is still
continuing to understand the structural behavior of HSC beams. Along with
the many benefits of the high strength concrete, the more brittle behavior is
of concern which leads to sudden failure. This paper presents the behavior
of reinforced HSC beams in shear with considering the effects of various
factors like shear reinforcement ratio, longitudinal reinforcement ratio, l/d
ratio (length to depth ratio), etc. Ten numbers Reinforced Concrete Beams
of various sizes using concrete mix with three different w/c ratios (0.46, 0.26
and 0.21) were cast for shear strength assessment. The beams were tested in
simply supported condition over two fixed steel pedestals with load rate of
0.2 mm/minute in displacement control. Mid-point deflection was measured
using LVDT. A comparative analysis of theoretical approaches of Euro
code, extension of current IS code up to M90 and the experimental data
was done to understand the behavior of beams. Shear capacities of beams
without any factors of safety were used to assess the actual capacities and
then was compared with the experimental capacity obtained. Results of
this study can be used in the design of high strength concrete and will be
more reliable in Indian continent as the regional materials and exposure
conditions were considered.
References:

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