Journal of Ceramics and Concrete Sciences (e-ISSN: 2582-1938)

Assessment of Self Compacting Concrete Using Foundry Sand as Partial Replacement for Fine Aggregates

2024-08-31T17:50:03+0530

Self-compacting concrete (SCC) is performance based concrete, which makes the concreting
easier in case of heavily reinforced structures. On the other hand, the development of
construction industry resulted in depletion of fine aggregates. Hence to overcome these
problems the Self-Compacting concrete (SCC) of M20 grade was designed by partially
replacing the fine aggregates with foundry sand in varied proportions (10%, 20%, 30% and
40%). Effect of foundry sand on the concrete in fresh and hardened state were analysed and
from the experimental results, it was observed that as the content of foundry sand increases
the workability decreases. The hardened properties (split tensile strength and compressive
strength) of the concrete increases up to a replacement of 30% and then decreases with
further replacement, however the strength will be greater than that of controlled cubes in all
the cases. The compressive strength for 30% replacement was increased by 5% when
compared to the controlled cubes. The split tensile strength obtained for 30% was increased
by 7% compared to that of controlled cubes.

Effect of Increasing the Molarity Concentration and Curing Time on Strength and Durability of Geopolymer Mortar

2024-08-31T17:28:28+0530

This paper presents the effect of increasing the molarity concentrations and curing time for
strength and durability of flyash based geopolymer mortars activated using combined sodium
silicate and sodium hydroxide solutions. Keeping NaOH concentration as 8M, 10M and
curing time as 24hrs, 48hrs totally nine mixes were prepared. Compressive strength, Split
tensile strength and Rapid Chloride Penetration tests were conducted on each of the nine
mixes. Results of the experimental study showed that there was an increase in compressive
strength and split tensile strength with increase in NaOH concentration and curing time.
Compressive strength up to 52.28 MPa was obtained with curing at 75C for 10 molarity geopolymer mortar.

Behaviour of Bamboo Reinforced Concrete Beams With 100% Recycled Coarse Aggregate

2024-08-31T17:02:36+0530

The behavior of bamboo reinforced concrete (BRC) beams with 100% recycled aggregates
(RA) was studied to ascertain the viability of the substitute materials and its adherence to
predictions. Two beams with 1% and 2% longitudinal reinforcement ratios and with stirrups
were stressed to failure under monotonic loading till failure. Observations of the deflections,
crack width and crack appearance were recorded at increasing load intervals until failure.
From experimental results, it was discovered that the higher percentage of longitudinal
reinforcement exhibited a higher ultimate load capacity with lesser deflection. The beam with
the higher percentage of longitudinal reinforcement also sustained cracks with smaller
widths than observed in the other beam. A framework for predicting the behavior of BRC
with RA was proposed and this seems to adequately predict results close to the experimental
results obtained. It is recommended herein that the crushing strain of RC be set as 0.001 in
the conventional sectional analysis of such members.

Influence of Sloping Ground on the Seismic Analysis

2024-08-31T17:39:33+0530

Seismic investigation is the computation of the reaction of a structure to quakes. It is a piece
of the procedure of auxiliary plan, seismic tremor building or basic evaluation and retrofit in
districts where quakes are common. The aim of this paper to study the response of RC
structure on slopping ground. To evaluate the response of building by using linear analysis
and nonlinear analysis. The analysis will be carried out on SAP2000 with help of guidelines
following code I.S1893:2002 (part I), FEMA 356. The seismic reaction on slope ground is
quite dissimilar as compare to seismic reaction on simple ground. In Reinforce concrete
structure design we will not take the effect of infill wall on structure at the time of
earthquake. In addition to this infill walls have a considerable strength and inflexibility and
they have main effect on the seismic reply of the structural system. Requirement of analysis
the seismic response of Reinforced Concrete building on inclined ground because require of
timely revision of codes of practice and standards. Mount buildings are dissimilar from those
in flat surface; they are very unequal and asymmetrical in horizontal and vertical planes, and
torsionally coupled. Due to the diverse configurations of building in mountainous areas,
these buildings become highly irregular and asymmetric, due to difference in mass and
rigidity distributions on dissimilar perpendicular axis at each floor. Such buildings are
seismically level areas makes them showing to greater shears and torsion as compare to
conservative construction.

Random Vibration Analysis of Intze Water Tank with Fluid- Structure-Interaction – A Review

2024-08-31T17:08:30+0530

Pre-stressed (Random) vibration analysis due to wind and seismic load in different filling
condition of an elevated intze water tank fluid system has been studied using finite element
method. In present work the pre-stress effect of seismic load on the free vibration of intze
water tank up to 10th mode shape is compared with the pre-stress effect of wind load on free
vibration of intze water tank fluid system in different filling condition. It is seen in the present
work that the difference in pre-stress effect on frequencies of free vibration in intze water
tank is very low or it can be negligible for different loading condition. The static analysis of
tank due to seismic load and wind load of an intze type water tank fluid system in different
filling condition are also studied using finite analysis. Stresses and deflection in static
analysis due to seismic load and wind load and also compare with each other. The maximum
stresses and deflections in all cases in present study are calculated. The analysis has been
done for different loading condition in different filling condition of tank. The analysis is
performing using ANSYS -14.5 MECHANICAL APDL software, in which Solid 187 element is
used for discretizing tank & Fluid 30 elements, is used for discretizing fluid system. To
validate the present work frequencies of free vibration is calculated and compare with the
previous study (transient and free vibration analysis of elevated intze water tank fluid soil
system). The results obtained are same calculated previously by the other author. After
validation the pre-stress (random) vibration analysis is done and results obtained from this
research work are presented in table form as well as in figures form and comparison of
results in graphical form also. Resonance condition for vibration analysis is also discussed.

Comparative Analysis Of Beam Using Timo Shenko Method & Eulers Elementry Beam Theory - A Review

2024-08-31T16:56:50+0530

Behavior of beam depends on its depth. A beam is considered as deep, if the span to depth
ratio is 2 or less for simply supported beam and 2.5 or less for continuous beam. In the
present work the analytical study of simply supported deep beams subjected to uniformly
distributed load by using Timoshenko theory to study the behavior of deep beam by
considering flexural stress, flexural strain, normal stress and shear stress variations at
different sections for various effective lengths to depth ratio and compare with Euler-
Bernoulli Theory. After analysis it is observed that the deep beam action is seen at length to
depth ratio equal to 4 which is less than specified value l/d = 2 for simply supported beam.
After the variation of strain component ‘u’ it is clear that variation of ‘u’ through the depth is
non-linear for l/d ratio less than or equal 4. From the variation of strain component ‘v’, it is
seen that the value of ‘v’ decreases with decrease in l/d ratio. From the observation of
flexural stress variation it is clear to say that as the l/d ratio decreases neutral axis start
shifting downward and the bending stress variation is non-linear when l/d ratio is less than
or equal to 4. This clearly shows that bending stress theory is not applicable for deep beam