Page 20 - Open-Access-June-2020

TECHNICAL PAPER

Table 8: Seismic Response of ECC Elements

type of sl. dimensions
speCimen no. referenCes (mm) oBjeCtive oBservations
1. Kanda and (b×d×l)*-150 × 200 × 1500 To investigate the shear performance of The smaller openings makes RECC more
Watanabe [101] ECC short span beams under cyclic loading suitable for earthquake prone areas then
RC members.
2. Fukuyama et al. [78] (b×d×l) -200 × 270 × 1080 To investigate the basic mechanical Up to 5% radiance of deflection angle and
*
properties and structural performance of the maximum crack width observed was
the RECC beams. less than 0.3 mm.
3. Yuan et al. [79] (b×d×l)*-200 × 300 × 2350 To investigate the performance of RECC i) The RECC beams showed enhanced
Beams beams as seismic resistance. load carrying of 8.8% compared to RC
beams.
ii) For the shear-span-ratio of 1.83, the
load carrying capacity and ultimate
deflection of RECC beams enhanced
46.2% and 49.2% respectively, than RC
beams.
Frank et al. [81] (b×d×l)*-203 × 165 × 895 To investigate the seismic behavior of ECC The RECC beams reacted very less due to
4. beams under deformation histories. the influence of the deformation histories
than RC beams.
Beam Zhang et al. [13] (b×d×l)*-150 × 300 × 2100 To investigate the effect of PP ECC beams with and without stirrups
5. (Polypropylene)-ECC in reducing stirrup increased the shear capacity to 20.6% and
ratio. 107.6%, respectively than RC beams.
Beam–Column Beam (b×d) -170 × 200 The use PP-ECC with reduced
*
Joint Column(b×d×l)*- reinforcement showed enhanced
250 × 250 × 1500 workability, ductility and energy dissipation.
6. Yuan et al. [82] Beam (b×d)*-200 × 400 To investigate the structural behavior of Application of ECC in joint zone increases
Column(b×d×l)*- ECC in joint zone of beam-column joint. the load carrying capacity, energy
350 × 250 × 1900 dissipation and ductility without stirrups.
7. Said and Razak [83] Beam (b×d) -250 × 170 To investigate the exterior ECC beam– i) Compared to concrete specimen the
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Column(b×d×l)*- column joint specimens under cyclic ECC specimen showed enhanced
250 × 170 × 2000 hysteretic loading. ultimate load capacity of 22.6%.
Beam-Column ii) Compared to concrete joint the ECC
Joint
joint showed significant increase in
cumulative energy absorption of about
33%, 100% and 180% at drift ratios of
3%, 4%, and failure stages, respectively.
8. Hosseini et al. [84] Beam (b×d) -203.2 × 203.2 To investigate the seismic behavior of ECC – 3D corner beam-column joint
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Column(b×d×l)*- 3D ECC beam-column joints in special increase the lateral strength by 15.7% in-
203.2 × 203.2 × 1320.8 moment resisting frames. plane and out-plane than RC specimens.
Interior Beam– 9. Qudah and Beam (b×d) -150×200 To investigate the seismic performance of Use of ECC enhanced the energy
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Column Maalej [102] Column(b×d×l)*- ECC in beam-column connections. dissipation capacity from 11-20%.
Connections 185×185×1200
Coupling 10. Canbolat et al. [80] (b×d×l)*-200 × 600 × 1700 To investigate the seismic behavior of ECC With supplemental diagonal bars, the ECC
Beams in coupling beams with a low reinforcement beams showed a drift of at least 4.0% by
usage. maintaining around 80% of their shear-
carrying capacity.
11. Billington et al. [90] Short column (b×d×h)*- To investigate the behavior of the More distributed fine cracks were observed
200 × 200 × 380 proposed bridge pier system and a small- in columns with ECC in hinge regions,
Tall column(b×d×h)*- scale column evaluated. which shows increased peak load and
200 × 200 × 685 energy dissipation of drift 3-6%.
12. Wu et al. [85] (b×d)*- 300 × 300 To investigate the Shear Stiffness of RECC i) The RECC columns showed an
h -500, 600, 900 Columns. enhanced ultimate drift ratio of 5% than
*
RC column, which is of 3.5%ultimate
Columns drift ratio.
ii) With low shear-span- depth ratio,
the shear contribution to the total
deformation for the diagonally cracked
RECC column were significant.
13. Yuan et al. [103] (b×d×h)*- To investigate the seismic behavior of Replacement of concrete by ECC exhibit
250 × 250 × 1750 hybrid steel–FRP-reinforced concrete ECC enhanced load carrying capacity, ductility
composite column. and energy dissipation by 39%, 73%, and
72%, respectively.

The IndIan ConCreTe Journal | June 2020 21